Better Music Builder A-4300 Owner's manual

Brand: Better Music Builder

Model: A-4300

Type: Owner's manual

Better Music Builder A-4300 is a powerful 4-channel amplifier with 1200W output, designed for professional use. Its features include signal level indicators, DDT protection, turbo-cooling system, anti-dust ventilation grill, front handles for easy transport, XLR and 1/4” combo audio inputs and outputs, speakon outputs, and rear panel selection switch for Stereo, Parallel, and Bridged modes. With its advanced features and protection circuitry, the A-4300 ensures clean, undistorted sound even under extreme conditions.

Thank you for purchasing this unit. To

make full and effective use of this unit,

please read this Owner's Manual

carefully before operating it. Please

retain this manual for future reference.

w w w.BetterMusicBuilder.com

OWNER'S MANUAL

Better Music Builder

is a leader in the Audio and

Karaoke equipment industry. We are committed to

offering you high quality audio products. Unlike any others

brand, we deliver the best cost and value to you directly.

For the latest update information including operation

manuals, installation instructions, hook-up diagram and

other new technologies updates etc. please visit us at our

website www.Bet terMusicBuilder.com.

DYNAMIC FUSION AMPLIFIER

A-4300

Better Music Builder .com

110421

It’s what we do!

Passionate about Music

PRO Power Amp

A SERIES

POWER

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A-4300

4-CH ANNEL POWER AMPLIFIER

CONTENTS

INTRODUCTION................................................................................................................................................ 3

SYSTEM FEATURES

............................................................................................................................................ 3

SAFETY INSTRUCTIONS

.............................................................................................................................. 4~5

SPEAKER CONNECTION METHODS AND INFORMATION

.................................................................... 6

SYSTEM APPLICATIONS

................................................................................................................................... 7

• Connecting the Whole System for Small Format

......................................................................................... 7

• Connecting the Whole System for Medium Format

................................................................................... 8

• Connecting the Whole System for Large Format

......................................................................................... 9

• Small Format

........................................................................................................................................................... 10

• Medium Format

...................................................................................................................................................... 11

• Large Format

........................................................................................................................................................... 12

CONTROLS AND FUNCTIONS

..................................................................................................................... 13

• Front Panel

................................................................................................................................................................ 13

• Rear Panel

................................................................................................................................................................ 13

OPERATION

...................................................................................................................................................... 14

PHYSICAL DIMENSIONS

............................................................................................................................... 15

SPECIFICATIONS

.............................................................................................................................................. 16

TROUBLESHOOTING

................................................................................................................................ 17~18

WARRANTY

...................................................................................................................................................... 19

AGENCY REGULATORY NOTICES

............................................................................................................... 20

FINAL WORDS TO USER

................................................................................................................................ 21

CONTACT INFORMATION

............................................................................................................................ 21

Intro

Features

Safety

Connection

Amplifier

Applications

Troubleshooting

Warranty

Final Words

Notices

Spec

Dimensions

Operating

INTRODUCTION

Better Music Builder A-4300 power amplifier provides

excellent performance and impressive power for all the

speakers. The A-4300 is a 4-Channel power amplifier. This

4-Channel power amplifier is one of the most powerful and

innovative amplifiers on the market today.

The A-4300 power amplifier is designed by the best minds

here in Better Music Builder to make this the most efficient,

most durable, and of course the best designed power

amplifier ever. The A-4300 features Better Music Builder’s

latest Auto Temperature and Loads Compensated Impedance

and DDT™ (Distortion Detection Technique) circuitry for

clean, undistorted sound with the ultimate circuit protection

needed by amps which often get pushed to the limit. DDT

protects drivers and ensures that sonic integrity is maintained,

even in extreme overload conditions. The Bass Boost circuit

optimized output from the power amplifier to match the

characteristics of our speaker systems, resulting in

extra-smooth highs and enhanced lows. And to officially

make this the most portable amplifier, we’ve included front

handles so you can lug the machine with ease.

Considering how much power the A-4300 can bring, it

needs a sophisticated cooling system. That’s where the

patented Turbo-Cooling System from Better Music Builder

comes in. Using the new technology, the system aligns the

amplifier’s massive heat sinks to provide maximum cooling.

Also, the fan speed is programmed to vary automatically

based on temperature. What all this means is that the system

extends the life of power transistors by maintaining safe

internal temperatures.

Better Music Builder is simply the best solution for home and

professional karaoke performance!

Intro

SYSTEM FEATURES

PROFESSIONAL POWER AMPLIFIER

• 1200W 4-Channel power amplifier

• Sleek aluminum chassis

• Signal level indicator for each channel

• DDT™ (Distortion Detection Technique) Protection

• Power overload protection

• Sophisticated Turbo-Cooling System helps extend life

• Variable fan speed is automatically adjusted by

temperature

• Anti-dust ventilation grill

• Front handles for portability

• Signal Inputs: 4 XLR and 1/4” combo audio inputs

• Signal Outputs: 4 XLR audio outputs

• Speaker Outputs: 4 speakon outputs

• Rear panel selection switch for Stereo, Parallel and Bridged

modes, including Sensitivity, Bass Boost switches

Features

A-4300 PACKAGE CONTENTS:

• Power Amplifier: 1 pc

• Instructional Manual: 1 pc

• Warranty & Registration Card: 1 pc

A-4300 Front View

A-4300 Rear View

AC-P OWER

AC 120V 60 Hz

MOD EL NO .: A- 430 0

CALIFORNIA, UNITED STATES OF AMERICA

E-m ail : s ale s@b ette rmu sic bui lde r.c om

w ww . B e tt e r M us i c B ui l d e r. c o m

ENGI NEERE D AND DESI GN IN U.S. A.

394200323700

FUS E

CAUT ION

RISK OF ELECTRIC SHOCK

DO NOT OPEN

WITHOUT AUTHORIZATION

CHA NNEL -4

For B ridge Use

4: 1+ 2+

CHA NNEL -2

For B ridge Use

2: 1+ 2+

BRIDGE

1.5V

STEREO

PARALL EL

SENSI TIVIT Y

0.75V

OFF

BASS B OOST

1.0V

1: GN D

2: S ig+

3: S ig–

SIGN AL INPUT/OU TPUT

CHA NNEL -3

BRIDGE

(IN-CH 3)

INPUTLINK /OUT

CHA NNEL -4

INPUT LINK /OUT

SIGN AL INPUT/OU TPUT

1: GN D

2: S ig+

3: S ig–

BRIDGE

1.5V

STEREO

PARALL EL

SENSI TIVIT Y

0.75V

OFF

BASS B OOST

1.0V

CHA NNEL -1

BRIDGE

(IN-CH 1)

INPUTLINK /OUT

CHA NNEL -2

INPUT LINK /OUT

SP EA KER OUTP UT T ERM INAL

CHA NNEL -3

CHA NNEL -1

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A-4300

4- CHA NN EL POWE R AM PLIF IE R

POW ER

SAFETY INSTRUCTIONS

Please visit our website at BetterMusicBuilder.com for the most

updated information, corrections on errors and changes in this

manual. You may also contact us at toll free at

1-800-318-2218.

1. Read Instructions: All the safety and operation instructions

should be read before this product is operated.

2. Retain Instructions: The safety and operating instructions

should be kept for future reference.

3. Warnings: All warnings on this product in these operating

instructions should be followed.

4. Follow Instructions: All operating and other instructions

should be followed carefully.

5. Water and Moisture: This product should not be used near

water, for example, near a bathtub, washbowl, kitchen sink,

laundry tub, in a wet basement, near a swimming pool,

swamp or salivating St. Bernard dog, etc.

6. Cleaning: Clean only with a dry cloth.

7. Ventilation: This product should be situated so that its

location or position does not interfere with its proper

ventilation. For example, the Component should not be

placed on a bed, sofa, rug, or similar surface that may block

any ventilation openings, or placed in a built-in installation

such as a bookcase or cabinet that may impede the flow of

air through ventilation openings.

8. Heat: This product should be stayed away from heat

sources such as radiators, or other devices producing heat.

9. Power Sources: This product should be connected to a

power supply only of the type described in these operation

instructions or as marked on this product.

10. Power Cord Protection: Power supply cords should be

routed so that they are not likely to be walked upon or

pinched by items placed upon or against them. Please pay

particular attention to cords plugs, convenience receptacles,

and the point where they exit this product.

11. Object and Liquid Entry: Care should be taken so that

objects do not fall on, or liquids are not spilled into this

product.

12. Damage Requiring Service: This product should be

serviced only by qualified service personnel when:

A. The power-supply cord or the plug has been

damaged; or

B. Objects have fallen, or liquid has spilled into this

product; or

C. This product has been exposed to rain; or

D. This product does not appear to operate normally

or exhibits a marked change in performance; or

E. This product has been dropped, or its chassis has

been damaged.

13. Servicing: The user should not attempt to service this

product beyond those means described in this operating

manual. All other servicing should be referred to the Service

Department.

14. To prevent electric shock, do not use this polarized plug

with an extension cord, receptacle or other outlet unless the

blades can be fully inserted to prevent blade exposure.

15. Grounding or Polarization: Precautions should be taken

so that the grounding or polarization means of this product is

not defeated.

16. Power Precaution: Unplug this product during lightning

storms or when unused for long periods of time. Note that

this product is not completely disconnected from the AC

power source when the power switch is in the OFF position.

17. This machine does not exceed the Class A/Class B

(whichever is applicable) limits for radio noise emissions from

digital apparatus as set out in the radio interference

regulations of the US Department of Communications.

AC-POWER SOURCES

This set should be operated only from the type of power

source indicated on the marking label. If you are not sure of

the type of electrical power supplied to your home, consult

your dealer or local power company. For those sets

designed to operate from battery power, or other sources,

refer to the operating instructions.

This unit is designed for use with 120V/60Hz AC. If the area

where you live have different power source, you may need to

use a transformer to convert to 120 Volts AC.

RISK OF ELECTRIC SHOCK

DO NOT OPEN

CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT

REMOVE COVER (OR BACK) NO USER-SERVICEABLE PARTS

INSIDE REFER SERVICING TO QUALIFIED PERSONNEL

Safety

AC-POWER CORD INCLUDED120V AC-POWER

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A-4300

4-C HANN EL P OWER AMPL IFIE R

POWER

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CHANNEL-4

A-4300

4-CHANNE L PO WER AMPLI FIER

POWER

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CHANN EL-1

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CHANN EL-2

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CHANN EL-3

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CHANN EL-4

A-4300

4-C HANN EL P OWER AMP LIFI ER

POWER

OVERLOADING

Do not overload wall outlets, extension cords or convenience

receptacles beyond their capacity, since this can result in fire

or electric shock.

An appliance and cart combination

should be moved with care. Quick

stops, excessive force and uneven

surfaces may cause the appliance and

cart combination to overturn.

Do not place the electronic equipment onto the unstable

table or stand. It is because it would fall easily from the

unstable table or stand,

so it may cause

accident including

personal injuries and

damage the equipment.

Please follow our

instructions to install the

equipment, or you may

hire a professional

technician to handle the

installation for safety

purpose.

Do not place the set on an unstable cart, stand, tripod,

bracket, or table. The set may fall, causing serious injury to

a child or an adult and serious damage to the set. Use only

a cart stand tripod, bracket, or table recommended by the

manufacturer.

For the set with a three-wire grounding type ac plug:

This plug will only fit into a grounding-type power outlet.

This is a safety feature. If you are unable to insert the plug

into the outlet, contact your electrician to have a suitable

outlet installed. Do not defeat the safety purpose of the

grounding plug.

120V AC-POWER

Do not store the electronic equipment near water or area

with moisture such as bathroom, kitchen sink, laundry area

and swimming pool, etc.

Do not transport the electronic equipment by yourself if its

weight exceeds 70 pounds. It is recommended that two

people work together to transport the equipment or by using

hand truck and the like.

Do not place the electronic equipment directly under

sunlight or close to the window. It may cause overheat on

the electronic equipment by the sunlight.

Do not block the openings and vents in the cabinet which

is designed for the ventilation of the electronic equipment.

The blocking may cause overheat in the electronic equipment

because of insufficient circulation of air, so it would damage

the electronic equipment.

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CHANNE L-2

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CHANNE L-3

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CHANNE L-4

A-4300

4-C HANN EL P OWER AMPL IFIE R

POWER

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CHANNEL-4

A-4300

4-CHA NNEL POW ER A MPLIF IER

POWER

POWER ANTENNA-A CNANNEL-A DISPLAY CNANNEL-B DISPLAY

CHANNEL-A

VOLUME

ANTENNA-B

CHANNEL-B

VOLUME

DUAL CHANNEL VHF WIR ELESS SYS TEM

FREQ.

5 10 15 20 25 30 35 40

-30 -25 -20 -15 -10 -5 0 PEAK

000.000

MUTE

FREQ.

5 10 15 20 25 30 35 40

-30 -25 -20 -15 -10 -5 0 PEAK

000.000

MUTE

SPEAKER CONNECTION METHODS AND INFORMATION

Conn ection

CONNECTOR INFORMATION

Either banana plug or wire insert type can be used to

connect the unit to speakers. Be sure to connect red (+) to red

(+) and black (–) to black (–). Otherwise, the sound output

would be 180° out of phase and distorted.

Follow these steps to insert the wire directly into the speaker

terminal.

1. Strip off the vinyl covering and twist the tip of the

wire core.

2. Loosen the knob and insert the wire core into the

terminal hole.

3. Tighten the knob to fix the wire core in place.

Do not allow the wire core to protrude or touch other

terminals or wires, otherwise, damage may occur.

METHODS OF SPEAKER CONNECTION

1. Wire Insert Type (Poor Connection)

SPEA KERS

NO GOOD

2. Double Banana Plug Type (Standard Connection)

SPEA KERS

3/4”

19 mm

3. Single Banana Plug Type (Superior Connection)

SPEA KERS

1/4” to 1/4” Cable

SHIELD

COLD

HOT

Balanced XLR Connectors

XLR TRS

Hot (+) Pin 2 Tip

Cold (

) Pin 3 Ring

Shield (Ground) Pin 1 Shield

XLR to RCA Cable

XLR to 1/4” Cable

GOOD

√

CONNECTING THE WHOLE SYSTEM FOR SMALL FORMAT

Applications

SYSTEM APPLICATIONS

Use the Classic Series speakers such as CS-250 G2

(8-inch woofer), CS-500 (10-inch woofer) and CS-612

G3 (12-inch woofer) and Oval Series speakers such

as O-6 (6-inch woofer), and O-10 (10-inch woofer) for

an area between 300 and 500 square feet.

CS-612 G3

DVD

DVD PLAYER

AUX 3

(MOBILE DEVICE)

AT&T 9:42AM 88%

Entertainment

Auto Priority

Wireless

HD Video

Connection

Set up

Speaker

Music

Customer Care

Mail

Vocal

Project

Wireless

Lyrics on TV

Free Resources

Stat

Group sing

Technical Support

KTV

Pro Sound

S A I S

SOURCE

VIDEO

AUX 1

KOD

(KARAOKE ON DEMAND)

AUX 2

(CD PLAYER)

MIXER DX-2000K

4-CHANNEL POWER AMPLIFIER

A-4300

POWER

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CHANNEL -3

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CHANNEL -4

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CHANNEL -1

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CHANNEL -2

A-4300

4-C HANN EL PO WER AMPL IFIE R

DFS-206

CONNECTING THE WHOLE SYSTEM FOR MEDIUM FORMAT

Use the Classic Series speakers such as CS-612 G3 or

CS-812 G3 (12-inch woofer) and Dynamic Fusion Series

speakers such as DFS-206 (one 6.5-inch woofer) and

DFS-306 (two 6.5-inch woofers) for an area between

1,000 and 2,000 square feet.

CS-812 G3

DFS-112 SUB

TOUCH SCREEN SONG SELECTOR

Pass ionat e abo ut Mu sic

SOURCE

MIXER DX-8000

MIC 2MIC 1 MIC 3

MIC. INP UT

Better Music Builder

Passion ate abou t M usic

FEEDBACK

AUDIO VI DEO E FFECT S PRO CESSO R DX-8000

High Def initi on Li ve So und

MIC

EFFECT

MUSIC

GAIN

BACK

DELAY

LIMITER

SYSTEM

POLARIT Y

X-OVER

PROGRAM L R SL SR C SUB

EDIT

(LONG)

/MUTE

(SHORT)

/OUTPU T LE VEL

CLIP

LIMIT

0dB

-12dB

-24dB

EDIT

CLIP

LIMIT

0dB

-12dB

-24dB

EDIT

KARAOK E PRO CESSO R

PROF A UDIO

ENTER / ESC

MIC. VO LUME

MIC 1/4

MIC 2/5

MIC 3

AUX

(iPhone/iPod/

MP3 PLAYER)

AT&T 9:42AM 88%

Entertainment

Auto Priority

Wireless

HD Video

Connection

Set up

Speaker

Music

Customer Care

Mail

Vocal

Project

Wireless

Lyrics on TV

Free Resources

Stat

Group sing

Technical Support

KTV

Pro Sound

S A I S

KOD

BGM

BGM PLAYER

4-CHANNEL

POWER AMPLIFIER

A-4300

POWER

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CHANNEL -3

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CHANNEL -4

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CHANNEL -1

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CHANNEL -2

A-4300

4-C HANN EL PO WER AMPL IFIE R

CD PLAYER

DVD

CD RECORDER

KOD

SOURCE

GUITAR

CONNECTING THE WHOLE SYSTEM FOR LARGE FORMAT

VOCAL

DFS-206

VOCAL

DFS-206

HD VOCAL

LOUDSPEAKER

DFS-915

HD VOCAL

LOUDSPEAKER

DFS-912

HD VOCAL

LOUDSPEAKER

DFS-912

HD VOCAL

LOUDSPEAKER

DFS-915

MULTI EFFECTS MIXER

EX-8 or EX-16

WIRED MIC. 1

WIRED MIC. 2

SUBWOOFER

DFS-112 SUB

MIXER DX-8000

MIC 2MIC 1 MIC 3

MIC. INP UT

Better Music Builder

Passion ate abou t M usic

FEEDBACK

AUDIO VI DEO E FFECT S PRO CESSO R DX-8000

High Def initi on Li ve So und

MIC

EFFECT

MUSIC

GAIN

BACK

DELAY

LIMITER

SYSTEM

POLARIT Y

X-OVER

PROGRAM L R SL SR C SUB

EDIT

(LONG)

/MUTE

(SHORT)

/OUTPU T LE VEL

CLIP

LIMIT

0dB

-12dB

-24dB

EDIT

CLIP

LIMIT

0dB

-12dB

-24dB

EDIT

KARAOK E PRO CESSO R

PROF A UDIO

ENTER / ESC

MIC. VO LUME

MIC 1/4

MIC 2/5

MIC 3

2-CHANNEL

POWER AMPLIFIER

A-1600/A-1800

2-CHA NNEL PO WER AMP LIFIER

A-1600

POWER

DDT

TEMP

SIGNAL

ACTIVE

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CHAN NEL-1

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CHAN NEL-2

4-CHANNEL

POWER AMPLIFIER

A-4300

POWER

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CHANNEL -3

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CHANNEL -4

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CHANNEL -1

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CHANNEL -2

A-4300

4-C HANN EL PO WER AMPL IFIE R

Use the Dynamic Fusion Series

speakers such as DFS-912 (12-inch

woofer), DFS-915 (15-inch woofer),

DFS-112 SUB (12-inch woofer), DFS-206 (one

6.5-inch woofer) and DFS-306 (two 6.5-inch woofers)

for an area between 1,000 and 3,000 square feet.

AC-POWER

AC 120V 60 Hz

MODEL NO.: A -430 0

CALIFORNIA, UNITED STATES OF AMERICA

E- mai l : sa les @ b ett erm usi c b uil der . c om

w w w . B e t t e r M u s i c B u i l d e r . c o m

ENGINEERED A ND D ES IG N IN U.S.A.

394200323700

FUSE

CAUTIO N

RISK OF ELECTRIC SHOCK

DO NOT OPEN

WITHOUT AUTHORIZATION

CH A N NEL- 4

For Bridge Use

4: 1+ 2+

CH A N NEL-2

For Bridge Use

2: 1+ 2+

BRID GE

1.5V

STE REO

PARALL EL

SENSITIVITY

0.75V

OFF

BAS S BOOST

1.0V

1: GN D

2: S ig+

3: S ig–

SIGNAL INPUT/OUTPUT

CH A N NEL-3

BRIDGE

(IN-CH 3)

INPUTLINK/OUT

CH A N NEL- 4

INPUT LINK/OUT

SIGNAL INPUT/OUTPUT

1: GN D

2: S ig+

3: S ig–

BRID GE

1.5V

STE REO

PARALL EL

SENSITIVITY

0.75V

OFF

BAS S BOOST

1.0V

CH A N NEL-1

BRIDGE

(IN-CH 1)

INPUTLINK/OUT

CH A N NEL-2

INPUT LINK/OUT

SPEAKER OUTPUT T ERMIN AL

CH A N NEL-3

CH A N NEL-1

A-4300 REAR VIEW

DVD

AUX 1

AUX 2

AUX 3

R LR L

OPTICAL

DIGITAL

COAXIAL

DIGITAL

AUDI O INPUT T ER MINAL

AC~110V 60Hz

AC~220V 50Hz

POWER CONSUMPTION:10W

AC-P OW ER

AUDI O OUTPUT

REAR MICROPHONE IN PU T

MIC 3 MIC 4

CAU TION

RISK OF ELECTRIC SHOCK

DO NOT OPEN

WITHOUT AUTHORIZATION

110V-120V220V-240V

220V

VOLT AG E

SELE CT OR

SAFETY

MARK

USA 394898-1394536-28

MOD EL: D X- 20 00 K

CAL IFORN IA, U NITED STAT ES OF AMER ICA

E- mai l: s ale s@b ett erm usi cbu ild er.c om

w w w. B e t te r M u si c B u il d e r .c o m

ENG INEER ED AN D DES IGNED IN U .S.A.

394190306400

FUSE

T2A/250V

DX-2000K REAR VIEW

This diagram gives you an idea of how to connect two

speakers to the 2-Channel power amplifier. If it’s used in a

bigger room that’s in excess of 1,000 square feet, you may

need two other speakers acting as rear speakers. When

doing so, a second 2-channel power amplifier is required.

SMALL FORMAT

WIRELESS MICROPHONE

VIDEO

KOD (KARAOKE ON DEMAND)

VIDEO

DVD PLAYER

XLR XLR

MAIN LEFT SPEAKER MAIN RIGHT SPEAKER

AC-POWER

AC 120V 60 Hz

MODEL NO.: A -430 0

CALIFORNIA, UNITED STATES OF AMERICA

E- mai l : sa les @ b ett erm usi c b uil der . c om

w w w . B e t t e r M u s i c B u i l d e r . c o m

ENGINEERED A ND D ES IG N IN U.S.A.

394200323700

FUSE

CAUTIO N

RISK OF ELECTRIC SHOCK

DO NOT OPEN

WITHOUT AUTHORIZATION

CH A N NEL- 4

For Bridge Use

4: 1+ 2+

CH A N NEL-2

For Bridge Use

2: 1+ 2+

BRID GE

1.5V

STE REO

PARALL EL

SENSITIVITY

0.75V

OFF

BAS S BOOST

1.0V

1: GN D

2: S ig+

3: S ig–

SIGNAL INPUT/OUTPUT

CH A N NEL-3

BRIDGE

(IN-CH 3)

INPUTLINK/OUT

CH A N NEL- 4

INPUT LINK/OUT

SIGNAL INPUT/OUTPUT

1: GN D

2: S ig+

3: S ig–

BRID GE

1.5V

STE REO

PARALL EL

SENSITIVITY

0.75V

OFF

BAS S BOOST

1.0V

CH A N NEL-1

BRIDGE

(IN-CH 1)

INPUTLINK/OUT

CH A N NEL-2

INPUT LINK/OUT

SPEAKER OUTPUT T ERMIN AL

CH A N NEL-3

CH A N NEL-1

A-4300 REAR VIEW

AC - P OWE R

OF F

220V110V

110 V

AC I NPU T 50/60H z

RE MOT E

1:NC

2:G ND

3:R ECEI VE

4:+5 V

1 2

GN D L E FT

VI DEO IN PUT

BG M

VO D AU X

VIDEO

OUTPUT

AUDIO I NPU T T ERMINAL

BG M

VO D AU X

R L

MI CRO P HON E I NP U T

MI C 4

2 1

MI C 5

2 1

AUDIO [ X LR] OU T PUT

MODEL: DX-8000

w ww .B et te rM us ic Bui ld er .c om

ENGINEERED AND DES IGN IN U.S.A.

384140314000

SUB C ENT ER RI GHT LE F T RIG H T LEFT

VOCAL MONITOR

BA SS GR OUP - AGR OUP - B

MEDIUM FORMAT

The medium format gives additional enhancements for

speakers requiring higher power and bass.

XLR

SUBWOOFER DFS-112 SUB

WIRELESS MICROPHONE

DX-8000 REAR VIEW

MAIN LEFT SPEAKER MAIN RIGHT SPEAKER

POWER AMP REAR VIEW

SIG NAL INPU T TE RMINA L

CAUT ION: TUR N OFF AMP LIFI ER BE FORE CHA NGIN G TH IS SW ITC H

CHA NNEL 1

GAIN

32dB

CHA NNEL 2

GAIN

32dB

ALONELINK

SPE AKE R OUT PUT TERM INAL

CAUT ION: SPE AKER CON NECT ION WITH 8oh m MI N IMP EDAN CE

CHA NNEL 1 CHA NNEL 2

360120719500

MODE L: A- 2

CALIF ORNIA , UNI TED S TATES OF A MERIC A

E-mai l: sa les@b etter music build er.co m

ww w . B et t e r Mu s i c Bu i l d er . c o m

ENGIN EERED AND DESIG N IN U.S.A .

SAFETY

MARK

USA 120798-1029611-28

SERI AL NO .

TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT

REMOVE COVER. NO USER SERVICEABLE PARTS INSIDE

REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.

CAUT ION

RISK OF ELECTRIC SHOCK

DO NOT OPEN

WITHOUT AUTHORIZATION

FUS E

AC- POWER

AC 12 0V 60 Hz

AC-POWE R

AC 120V 60 Hz

MODEL NO.: A-4 300

CALIFORNIA, UNITED STATES OF AMERICA

E- mai l : s ale s @ be tte rmu s icb uil d e r. com

w w w . B e t t e r M u s i c B u i l d e r . c o m

ENGINEERED AN D DE SI GN I N U. S. A.

394200323700

FUSE

CAUTION

RISK OF ELECTRIC SHOCK

DO NOT OPEN

WITHOUT AUTHORIZATION

CH A N NEL-4

For Br idge Us e

4: 1+ 2+

CH A N NEL-2

For Br idge Us e

2: 1+ 2+

BRID GE

1.5V

STE REO

PARALL EL

SENSITIV IT Y

0.75V

OFF

BAS S B OO ST

1.0V

1: GN D

2: S ig+

3: S ig–

SIGNAL INPUT/OUTPUT

CH A N NEL-3

BRIDGE

(IN-CH 3)

INPUTLINK/OUT

CH A N NEL-4

INPUT LINK/OUT

SIGNAL INPUT/OUTPUT

1: GN D

2: S ig+

3: S ig–

BRID GE

1.5V

STE REO

PARALL EL

SENSITIV IT Y

0.75V

OFF

BAS S B OO ST

1.0V

CH A N NEL-1

BRIDGE

(IN-CH 1)

INPUTLINK/OUT

CH A N NEL-2

INPUT LINK/OUT

SP E AKER OU T P U T TERMIN A L

CH A N NEL-3

CH A N NEL-1

A-4300 REAR VIEW

LARGE FORMAT

The large format is perfect for multiple speakers which

require even higher power and great for concerts and live

performances.

SER IAL N O.:

CALIFORNIA, UNITED STATES OF AMERICA

E- mai l: sal es @be tte rmu sic bu ild er. com

w w w. B e t te r M u si c B u il d e r .c o m

ENG INEER ED AN D DES IGN I N U.S .A.

361111015500

AC~120V 60Hz 35W

AC~220V 50Hz

FUSE 1A

AUDI O (XLR) O UT PUT

MAIN 2

OUTP UT

MICR OP HONE IN PU T

MIC 3

MIC 4

MAIN 1

AUDI O (¼”) OU TP UT

R L

REAR M ICROPHO NE MODE

DELA Y REPEA T ECHO

REMO TE

INPU T

RS-2 32

AUX VOD

VOD

INPU T

AUDI O INPUT

VOD

DVD

AUX 2AUX 1

RECO RD ING OUT

VIDE O INPUT MI C EFFEC TO R

MOD EL: D X- 50 00 G2

SAFETY

MARK

USA 020898-1

029536-28

CAU TION

RISK OF ELECTRIC SHOCK

DO NOT OPEN

WITHOUT AUTHORIZATION

VOLUME

AUX

VIDEO

OUTPUT

DVD RETU RN SEND

SUB REAR CENTER

R L

AC-P OW ER

115

DX-5000 G2 REAR VIEW

WIRELESS MICROPHONE

MAIN LEFT SPEAKER MAIN RIGHT SPEAKER

MAIN LEFT

SPEAKER GROUP B

MAIN RIGHT

SPEAKER GROUP B

SUBWOOFER DFS-112 SUB

CENTER SPEAKERCENTER SPEAKER

-2

-4

-6

-8

-10

-12

-14

-16

-18

-20

-24

CH ANN EL -1

-2

-4

-6

-8

-10

-12

-14

-16

-18

-20

-24

CH ANN EL -2

-2

-4

-6

-8

-10

-12

-14

-16

-18

-20

-24

CH ANN EL -3

-2

-4

-6

-8

-10

-12

-14

-16

-18

-20

-24

CH ANN EL - 4

A-4300

4-C H ANNEL POW ER AMPL IFIER

POWER

AC-POWER

AC 120V 60 Hz

MODEL NO.: A -430 0

CALIFORNIA, UNITED STATES OF AMERICA

E- mai l : sa les @ b ett erm usi c b uil der . c om

w w w . B e t t e r M u s i c B u i l d e r . c o m

ENGINEERED A ND D ES IG N IN U.S.A.

394200323700

FUSE

CAUTIO N

RISK OF ELECTRIC SHOCK

DO NOT OPEN

WITHOUT AUTHORIZATION

CH A N NEL- 4

For Bridge Use

4: 1+ 2+

CH A N NEL-2

For Bridge Use

2: 1+ 2+

BRID GE

1.5V

STE REO

PARALL EL

SENSITIVITY

0.75V

OFF

BAS S BOOST

1.0V

1: GN D

2: S ig+

3: S ig–

SIGNAL INPUT/OUTPUT

CH A N NEL-3

BRIDGE

(IN-CH 3)

INPUTLINK/OUT

CH A N NEL- 4

INPUT LINK/OUT

SIGNAL INPUT/OUTPUT

1: GN D

2: S ig+

3: S ig–

BRID GE

1.5V

STE REO

PARALL EL

SENSITIVITY

0.75V

OFF

BAS S BOOST

1.0V

CH A N NEL-1

BRIDGE

(IN-CH 1)

INPUTLINK/OUT

CH A N NEL-2

INPUT LINK/OUT

SPEAKER OUTPUT T ERMIN AL

CH A N NEL-3

CH A N NEL-1

CONTROLS AND FUNCTIONS

Amplifier

FRONT PANEL:

ANTI-DUST VENTILATION GRILL

CHANNEL-2 GAIN CONTROL

ACTIVE LED INDICATOR

This LED lights when the amplifier operates normal.

SIGNAL LED INDICATOR

This LED lights when its channel makes an output signal.

DDT (DISTORTION DETECTION TECHNIQUE) LED

INDICATOR

When the output signal distortion is happened, the DDT

LED indicator will light up.

CHANNEL-1 GAIN CONTROL

DC LED INDICATOR

When the circuit is operated unusual, the DC protection

will be activated and the DC LED indicator will light up.

When the problem is removed, the light is off and normal

operation resumes.

TEMP LED INDICATOR

When the temperature is operated unsafe, the TEMP

protection will be activated and the TEMP LED indicator

will light up. When the problem is removed, the light is

off and normal operation resumes.

POWER BUTTON ON/OFF

CHANNEL-4 GAIN CONTROL

CHANNEL-3 GAIN CONTROL

CHANNEL-2 AUDIO OUTPUT LINK TO AMPLIFIER

SENSITIVITY SWITCH: Setting amplifier's input sensitivity.

BASS BOOST SWITCH

WOKING MODES SWITCH (BRIDGE/PARALLEL/STEREO)

CHANNEL-1 AUDIO OUTPUT LINK TO AMPLIFIER

CHANNEL-1 ¼˝ TRS AND XLR AUDIO COMBO INPUT

AC POWER

120V for USA & Canada. 220V for Asia and Europe.

FUSE: Housing for the power supply fuse.

CHANNEL-4 ¼˝ TRS AND XLR AUDIO COMBO INPUT

CHANNEL-4 AUDIO OUTPUT LINK TO AMPLIFIER

SENSITIVITY SWITCH: Setting amplifier's input sensitivity.

BASS BOOST SWITCH

WOKING MODES SWITCH (BRIDGE/PARALLEL/STEREO)

CHANNEL-3 AUDIO OUTPUT LINK TO AMPLIFIER

CHANNEL-3 ¼˝ TRS AND XLR AUDIO COMBO INPUT

CHANNEL-1/2/3/4 SPEAKON OUTPUT TERMINAL

CHANNEL-2 ¼˝ TRS AND XLR AUDIO COMBO INPUT

REAR PANEL:

3 74 5 6 8

109 11

19 2712 13 15 17 181614 20 21 23 25 2624 2822

OPERATION

Opera ting

REAR PANEL OPERATION

CHANNEL- 4

For Bridge Use

4: 1+ 2+

CHANNEL- 2

For Bridge Use

2: 1+ 2+

SIGNAL INPUT/OUTPUT

1: GND

2: Sig+

3: Sig–

BRIDGE

1.5V

STEREO

PARAL LEL

SENSITIVITY

0.75V

OFF

BASS BOOST

1.0V

CHANNEL-1

BRIDGE

(IN-CH 1)

INPUTLINK /OUT

CHANNEL- 2

INPUT LINK/OUT

SPEAK ER OUTPUT T ERMINAL

CHANNEL- 3

CHANNEL-1

BRIDGESTEREO

PARALLEL

SPEAKERSPEAKER MULTI EFFECTS MIXER

EX-8 or EX-16

STEREO MODE CONNECTION

CHANNEL- 4

For Bridge Use

4: 1+ 2+

CHANNEL- 2

For Bridge Use

2: 1+ 2+

SIGNAL INPUT/OUTPUT

1: GND

2: Sig+

3: Sig–

BRIDGE

1.5V

STEREO

PARAL LEL

SENSITIVITY

0.75V

OFF

BASS BOOST

1.0V

CHANNEL-1

BRIDGE

(IN-CH 1)

INPUTLINK /OUT

CHANNEL- 2

INPUT LINK/OUT

SPEAK ER OUTPUT T ERMINAL

CHANNEL- 3

CHANNEL-1

SPEAKERSPEAKER

BRIDGESTEREO

PARALLEL

MULTI EFFECTS MIXER

EX-8 or EX-16

PARALLEL MODE CONNECTION

CHANNEL- 4

For Bridge Use

4: 1+ 2+

CHANNEL- 2

For Bridge Use

2: 1+ 2+

SIGNAL INPUT/OUTPUT

1: GND

2: Sig+

3: Sig–

BRIDGE

1.5V

STEREO

PARAL LEL

SENSITIVITY

0.75V

OFF

BASS BOOST

1.0V

CHANNEL-1

BRIDGE

(IN-CH 1)

INPUTLINK /OUT

CHANNEL- 2

INPUT LINK/OUT

SPEAK ER OUTPUT T ERMINAL

CHANNEL- 3

CHANNEL-1

SPEAKERSPEAKER

BRIDGESTEREO

PARALLEL

MULTI EFFECTS MIXER

EX-8 or EX-16

BRIDGE MODE CONNECTION

PHYSICAL DIMENSIONS

Dimensions

PACKING DIMENSIONS

(WxHxD)

DIMENSIONS

(WxHxD)

MODEL

NET WEIGHT

SHIPPING WEIGHT

23x5.9x21.9 in

58.5x15x55.5 cm

19x3.5x17 in

48.3×8.9×43.2 cm

A-4300

25.4 Lbs / 11.5 Kg

28.7 Lbs / 13 Kg

A-4300 Front View

19”

48.3 cm

3.5”

8.9 cm

17”

43.2 cm

PORTABLE SYSTEM

0dB

Volume

CENTER

5-CHANNEL P OWER AMPLIFIER

POWER

OFF ON

0dB

Volume

Channel-A

Main Left

LIGHT

CUP

SIGNAL

POWER

0dB

Volume

Channel-B

Main Right

LIGHT

CUP

SIGNAL

POWER

0dB

Volume

Channel-C

Rear Left

LIGHT

CUP

SIGNAL

POWER

0dB

Volume

Channel-D

Rear Right

LIGHT

CUP

SIGNAL

POWER

MIC . VO LUM E

VOLMIC RO PH ONE T ON E

MIC. INPUT

MIC 1 MIC 2

EXCITER

VOLHIGH SUB FREQ

MIC 1 3 MIC 2 4 LOW R EAR

TREBLE

MID

BASS

MOD E AD JUS TA BL E

CENTER

MUSIC VOL

20 240

VOL

EXCITER MIC AUDIO SUB INPUT

DOWN

MEMORY

5 CHANNEL AUDIO VIDEO EFFECTS P ROCESSOR

MUSIC VOL 10

CDG

DVD V OD

POWER

AIR VENTILATION

This series of amplifiers use the same ventilation structure.

First, cool air enters through the front panel. While inside, it

goes through the transformer and enters the fan. And then it

is finally compressed into the radiator and flows out from the

rear outlets.

COOL

AIR ENTERS

(Front)

WARM

AIR EXITS

-2

-4

-6

-8

-10

-12

-14

-16

-18

-20

-24

CHAN NEL-1

-2

-4

-6

-8

-10

-12

-14

-16

-18

-20

-24

CHAN NEL-2

-2

-4

-6

-8

-10

-12

-14

-16

-18

-20

-24

CHAN NEL- 3

-2

-4

-6

-8

-10

-12

-14

-16

-18

-20

-24

CHAN NEL- 4

A-4300

4- CHAN NEL P OWE R AMP LIFI ER

POWE R

-2

-4

-6

-8

-10

-12

-14

-16

-18

-20

-24

CHANNE L-1

-2

-4

-6

-8

-10

-12

-14

-16

-18

-20

-24

CHANNE L-2

-2

-4

-6

-8

-10

-12

-14

-16

-18

-20

-24

CHANNE L-3

-2

-4

-6

-8

-10

-12

-14

-16

-18

-20

-24

CHANNE L-4

A-4300

4-C HANN EL P OWER AMP LIFIE R

POWER

Side View

H. 3.5”

8.9 cm

D. 17”/43.2 cm

POWER ANTENA-A CNANNEL-A DI SPLAY CNANNEL-B DI SPLAY

CHANNEL-A

VOLUME

ANTENA-B

CHANNEL-B

VOLUME

DUAL CHAN NEL VHF WIR ELESS SYST EM

FREQ.

5 10 15 20 25 30 35 40

-30 -25 -20 -15 -10 -5 0 PEAK

000.000

MUTE

FREQ.

5 10 15 20 25 30 35 40

-30 -25 -20 -15 -10 -5 0 PEAK

000.000

MUTE

SPECIFICATIONS

Spec

MODEL

RATED POWER

@ 1kHz/1% THD

Stereo 8ohm

Stereo 4ohm

Bridge 8ohm

Bridge 4ohm

300W x 4

600W x 4

1800W

2400W

20Hz - 20KHz,+/-0.5dB

<0.05% (1kHz, normal operating conditions)

<0.02% (60Hz/7KHz,10% Rated Power)

0.75V, 1.0, 1.5V (Selectable)

Unbalanced input 10K Ohms, Balanced input 20K Ohms

>105dB (A Weight)

>500 @ 8ohm/100Hz

Power button, 2 Front panel gain controlling knob for Channel-1 and Channel-2

5 LED indicators per channel: DC, Temperature, DDT, Signal and Active

Stepless shifting, Cooling airflow from front to back

CLIP limit, Short circuit, thermal overload, DC overload

Signal Inputs: 2 Combo 1/4” XLR, Signal Outputs: 2 XLR,

Speaker Outputs: 2 dual-banana outputs & 2 speakon outputs

0.062” Thick Aluminum

120V/50Hz – 60Hz

FREQUENCY RESPONSE

THD+N

IMD

INPUT SENSITIVITY

INPUT IMPEDANCE

S/N RATIO

DAMPING FACTOR

CONTROLS

INDICATOR LEDS

COOLING

PROTECTION

CONNECTORS

CONSTRUCTION

STANDARD POWER

A-4300

-2

-4

-6

-8

-10

-12

-14

-16

-18

-20

-24

CHAN NEL-1

-2

-4

-6

-8

-10

-12

-14

-16

-18

-20

-24

CHAN NEL- 2

-2

-4

-6

-8

-10

-12

-14

-16

-18

-20

-24

CHAN NEL- 3

-2

-4

-6

-8

-10

-12

-14

-16

-18

-20

-24

CHAN NEL- 4

A-4300

4- CHAN NEL POWE R AM PL IFIER

POW ER

TROUBLESHOOTING

1. NO SOUND: Power indicator is Off.

REMEDY:

• Check the AC Plug.

• Ensure that the AC outlet works by testing other devices. If

too many amplifiers are used on one outlet, the building's

circuit breaker may trip and shut off power.

• Check the overload switch located on rear panel.

• An amplifier that keeps shutting off may have a serious

internal fault. Turn it off, remove AC power, and have the

amplifier serviced by a qualified technician.

2. NO SOUND: The power indicator light is On but signal

light is Off.

REMEDY:

 If the POWER indicator LED is On and the fan is running,

but the signal LED indicate no signal, check the input. Make

sure the signal source is operating and try another input

cable. Connect the source to another channel or amplifier to

confirm its operation.

 Check audio cables or microphone cables.

 Use a better audio cable or 3pin XLR microphone cable.

 Ensure microphone is On.

 Check the microphone volume.

3. DDT (DISTORTION DETECTION TECHNIQUE) LED

INDICATOR IS ON & SOUND IS ABNORMAL

REMEDY:

 Sound of music signal output amplitude is too high.

 The gain level is set too high.

 Ensure the output connection is connected correctly and

then reboot the machine.

4. SIGNAL LED IS NOT RESPONDING TO SIGNAL LEVEL

REMEDY: If the SIGNAL indicator is lighting normally, the

problem may be between the amplifier and the speaker.

Check the speaker wiring for breaks. Try another speaker

and cable.

Troubleshooting

5. BAD AUDIO OR MICROPHONE SOUNDS

REMEDY:

 Check the source of audio (CD, DVD) to see if it’s

scratched.

 Check audio cables or microphone cables.

 Use a better audio cable or 3pin XLR microphone cable.

6. THERE IS NO PICTURE

REMEDY:

 Check to see if video sources are selected accordingly.

 Check to see if plugged in the video cables are plugged in.

 Check TV or display monitor.

7. VIDEO IS FLICKERING

REMEDY:

 Check to see if the AV cable is damaged.

 Use a better AV cable.

 We recommend connecting videos to the TV or monitor

directly for best results.

8. POWER CAN NOT BE TURNED ON

REMEDY:

 Check to see if unit is plugged in properly.

 Check power cable.

9. PROTECTION FOR AUDIO/VIDEO EQUIPMENT

Before hooking up or disconnecting any audio/video equip-

ment, turn off the power for all equipment. Otherwise, it may

cause black spots to appear on the LCD or Plasma TV screen.

10. AMPLIFIER SHUT DOWN/INTERFERENCE NOISE

CAUSE: The amplifier turned On but there is no music coming

out from the speaker powered output channels.

REMEDY: Ensure that the AC-power supply is connected to the

correct voltage level according to your region.

11. NOISE AND DISTORTION

When humming noise or displeasing sound appears, replace

the supplied power cord with an AC power cord with a

magnetic device as shown in the figure below.

In North America many families own satellite TVs, HD TVs

and cable TV receivers. They may cause interference which

affect both audio and video equipment. The power cord as

shown in figure 2 may help eliminate the humming sound

and enhance TV picture quality.

12. SOUND PROBLEM: No sound.

REMEDY:

Positive and negative of

speaker wire are touching

each other at the terminals.

We recommend the usage

of double banana plugs.

3 prong to 2 prong adaptor

110V~120V

FIGURE 1

Qualit y Power Cord:

105°C 3C/18AWG 300V

FIGURE 2

NOTE

SPEAKERS

TROUBLESHOOTING (Continued)

WARRANTY

ONE-YEAR LIMITED WARRANTY FOR HOME USE

EQUIPMENT

Our one-year warranty covers both parts and labors. The

warranty becomes effective from the date of your purchase

for one year.

Our warranty only covers defects due to product

defectiveness with free of defects in materials or

workmanship. However, our warranty does not cover defects

due to normal wears, damage in transit, improper use, abuse

or failure to follow the proper instructions for maintenance.

This warranty is void in the event of unauthorized repairs,

alternations, modifications and removing of the product label.

Please also note that our warranty does not cover any

shipping cost for the return of defective products to us for

inspection, repair and maintenance. Our warranty for Better

Music Builder products can only be executed in North

America.

90-DAY LIMITED WARRANTY FOR PUBLIC AND

COMMERCIAL USE EQUIPMENT

Our 90-day warranty applies to speakers, amplifiers, mixers

and microphones for both public and commercial use such as

restaurant, coffee shop, KTV nightclub, church and school,

etc. It covers both parts and labors. The warranty becomes

effective from the date of your purchase for 90 days.

Our warranty only covers defects due to product

defectiveness with free of defects in materials or

workmanship. However, our warranty does not cover defects

due to normal wears, damage in transit, improper use, abuse

or failure to follow the proper instructions for maintenance.

This warranty is void in the event of unauthorized repairs,

alternations, modifications and removing of the product label.

Please also note that our warranty does not cover any

shipping cost for the return of defective products to us for

inspection, repair and maintenance. Our warranty for Better

Music Builder products can only be executed in North

America.

Warranty

ADDITIONAL NOTES:

1. Limited warranty for home use equipment is only valid in

North America.

2. Limited warranty is valid only if you purchase our products

from our authorized dealers (including both regular retailers

and online retailers) in North America. If you choose to

purchase our products from an authorized dealer, we will not

provide any limited product warranty for you. To protect your

limited product warranty, please purchase our products from

one of our authorized dealers in North America near you.

3. Limited warranty is automatically void if the yellow label

stating “No Warranty After Opening” is removed from the

product.

TO REGISTER YOUR WARRANTY

Please fill out the warranty card that came with your unit,

download or submit online warranty form. However, we need

the invoice for your purchase in order to process this warranty.

You may also register your warranty online.

Please visit our website at ww w.bettermusicbuilder.com.

AGENCY REGULATORY NOTICES

Federal Communications Commission Notice

These limits are designed to provide reasonable protection

against harmful interference in a residential installation. This

equipment generates, uses, and can radiate radio frequency

energy and, if not installed and used in accordance with the

instructions, may cause harmful interference to radio

communications. However, there is no guarantee that

interference will not occur in a particular installation. If this

equipment does cause harmful interference to radio or

television reception, which can be determined by turning the

equipment off and on, the user is encouraged to try to correct

the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.

• Increase the separation between the equipment and the

receiver.

• Connect the equipment into an outlet on a circuit different

from that to which the receiver is connected.

• Consult the dealer or an experienced radio or television

technician for help.

Modifications

The FCC requires the user to be notified that any changes or

modifications made to this device that are not approved may

void the user’s authority to operate the equipment.

Cables

Connections to this device must be made with shielded cables

with metallic RFI/EMI connector hoods to maintain

compliance with FCC rules and regulations.

Materials Disposal

Disposal of this material can be regulated because of

environmental considerations. For disposal or recycling

information, contact your local authorities or the Electronic

Industries Alliance (EIA) (http://www.eiae.org).

Disposal Of Waste Equipment By Users In

Private Households In The European Union

This symbol on the product or on its packaging indicates that

this product must not be disposed of with your other

household waste. Instead, it is your responsibility to dispose of

your waste equipment by handing it over to a designated

collection point for the recycling of waste electrical and

electronic equipment. The separate collection and recycling of

your waste equipment at the time of disposal will help to

conserve natural resources and ensure that it is recycled in a

manner that protects human health and the environment. For

more information about where you can drop off your waste

equipment for recycling, please contact your local city office,

your household waste disposal service or the shop where you

purchased the product.

Japanese Notice

Japanese Power Cord Notice

Japanese Material Content Declaration

A Japanese regulatory requirement, defined by Specification

JIS-C-0950, 2005, mandates that manufacturers provide

Material Content Declarations for certain categories of

electronic products offered for sale after July 1, 2006.

Korean Notice

Recycling Program

The terms and availability of these programs vary by

geography because of differences in regulatory requirements

and local customer demand.

因为在当地的监管要求和客户的需求，这些条件和程序的情

况不同。

Notices

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Better Music Builder A-4300 Owner's manual

Better Music Builder A-4300 Owner's manual

Better Music Builder A-4300 Owner's manual

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