Rolls HA243 User manual

Rolls
Brand
Rolls
Model
HA243
Type
User manual
HA243
Stereo Headphone Ampli er
Quick Start Guide
ROLLS CORPORATION
SALT LAKE CITY, UTAH
06/11
AB
MONO-STEREO
MONO-STEREO
75889 02430
62
SCHEMATIC
www.rolls.com
OUT
HA243
A-B
OUT
A-B
OUT
A-B
OUT
A-B
MADE IN USA
STUDIOPHILE
HEADPHONE
AMP
SPECIFICATIONS
Input Impedance: 10K Ohms unbalanced
Max Input Level: +26 dBV
Input Connectors: RCA, 1/4” and 3.5mm for both A and B inputs
Outputs: 4: 1/4" TRS Stereo jacks
4: 1/8" (3.5 mm) TRS Stereo jacks
Max Gain: 20 dB/Channel
Output Power: 326 mW/side, 652 mW/Channel ( @ 62 Ohms )
Frequency Response: 20 Hz - 20 kHz +/- 3 db
S/N Ratio: 92 dB
THD: <.008%
IMD: <.008%
Phase Shift (In to Out): less than 10 deg.
Slew Rate: 2 V per microsecond
Crosstalk: - 65 dB
Power VDC
Weight: 1.6 lbs
Size: 6.75” x 1.75” x 4.75”
Headphone impedance: 8 Ohms to 1000 Ohms
WARNING:
WARNING: THE MINIMUM HEADPHONE IMPEDANCE FOR THE HA243 IS 8
OHMS. THE MAXIMUM HEADPHONE IMPEDANCE IS 1000 OHMS.
IF YOU CONNECT AND USE THE HA243 WITH A LOWER HEADPHONE IMPED-
ANCE THAN LISTED ABOVE YOU WILL DAMAGE THE UNIT AND POSSIBLY OTHER
EQUIPMENT THAT IS CONNECTED TO THE HA243.
1
Rolls Corporation
5968 S 350 W
Murray, UT 84107
1
HA243.SCH A
16 March 2011
Title
Size: Document Number:
Date:
Rev:
Sheet of
Studio Phile HA243 4ch Headphone Amp
Ba
V+
V+
V+
V+
V+
Vb
Vb
Vb
J13
PHONE 1/4
6
5
7
8
U2B
3414
2
3
1
4
U2A
3414
6
5
7
8
U3B
3414
2
3
1
4
U3A
3414
6
5
7
8
U4B
3414
2
3
1
4
U4A
3414
2
3
1
4
U5A
3414
6
5
7
8
U5B
3414
J9
PHONE 1/4
R5
10
13
2
P1A
P100K X2
46
5
P4B
P100K X2
46
5
P3B
P100K X2
46
5
P2B
P100K X2
46
5
P1B
P100K X2
13
2
P2A
P100K X2
13
2
P3A
P100K X2
13
2
P4A
P100K X2
R9
10K
R8
10K
R13
10K
R12
10K
J12
PHONE 1/4
J10
PHONE 1/4
R17
10K
R4
10K
R2
10K
R18
10
R19
10
R15
10
R14
10
R10
10
R11
10
R6
10
C13
1000 UF
C15
1000UF
C14
47 UF
R22
22K
R23
22K
2
3
1
J1
JAPDC
J11
PHONE 1/4
D2
1N4001
R16
10K
D1
LDRR
R24 4.7K
C3
27PF
C9
27PF
C10
27PF
C11
27PF
C6
27PF
C7
27PF
C8
27PF
C12
27PF
C4
10U
C5
10U
1
3
J3A
RCAX4
2
J3B
RCAX4
4
6
J3C
RCAX4
5
J3D
RCAX4
1
2
3
SW1A
DPDT
4
5
6
SW1B
DPDT
1
2
3
SW2A
DPDT
4
5
6
SW2B
DPDT
1
2
3
SW3A
DPDT
4
5
6
SW3B
DPDT
1
2
3
SW4A
DPDT
4
5
6
SW4B
DPDT
J2
JK3.5ST
J8
JK3.5ST
J5
JK3.5ST
J6
JK3.5ST
J7
JK3.5ST
J4
JK3.5ST
C2
10U
C1
10U
J14
PHONE 1/4
R7
470
R1
470
R21
470
R20
470
3
1
2
SW5
SPDT
3
1
2
SW6
SPDT
MONO
STEREO
R25
100K
Vb
MONO
STEREO
INTRODUCTION
Thank you for your purchase of the Rolls HA243 Stereo Headphone Ampli er. This unit was
designed to provide years of dependable service. Please read this manual carefully to ensure
proper operation.
The HA243 is a four-channel headphone ampli er with a variety of input options. Including an
A-B selector switch for each channel. Both 1/4” and 1/8” stereo output jacks for each channel.
RCA, 1/4” and 1/8” stereo inputs for A and B inputs that can be switched to mono.
INSPECTION
Unpack and inspect the HA243 box and package.
If obvious physical damage is noticed, contact the carrier immediately to make a damage
claim. We suggest saving the shipping carton and packing materials for safely transporting
the unit in the future.
WARRANTY
For complete Warranty information and registration, please visit our website; www.rolls.
com. Click on the REGISTER YOUR WARRANTY HERE line. Or, complete the Warranty
Registration Card and return it to the factory.
DESCRIPTION
FRONT PANEL
www.rolls.com
OUT
HA243
A-B
OUT
A-B
OUT
A-B
OUT
A-B
MADE IN USA
STUDIOPHILE
HEADPHONE
AMP
OUT: 1/4” and 1/8” (3.5mm) Tip-Ring-Sleeve stereo jacks for connection to a standard
pair of headphones.
LEVEL: Controls the amount of output signal from the indicated channel.
A-B: Selects between the A or B inputs on the back of the unit.
PWR LED: Indicates that the HA243 is connected to the power supply and is on.
REAR PANEL
AB
MONO-STEREO
MONO-STEREO
POWER: For connection to a Rolls VDC power supply ONLY!!!
A INPUTS: 1/4” , 1/8” or RCA inputs.
B INPUTS: 1/4” , 1/8” or RCA inputs.
MONO-STEREO: Select for the type of input you are using. The channels are indepen-
dant of each other so you can use one channel in mono and the other in stereo.
NOTE: THIS MANUAL ASSUMES THE USER HAS A WORKING KNOWLEDGE OF AU-
DIO ELECTRONICS, BALANCED AND UNBALANCED CONNECTIONS, AND PROPER
SIGNAL LEVEL SETTING.
WARNING
USING THIS PRODUCT AT EXCESSIVE VOLUMES CAN CAUSE
PERMANENT HEARING DAMAGE.
USE AS LOW A VOLUME AS POSSIBLE
In order to use this system safely, avoid prolonged listening at excessive sound pressure
levels. Please use the following guidelines established by the Occupational Safety Health
Administration (OSHA) on maximum time exposure to sound pressure levels before hearing
damage occurs. 90 dB SPL at 8 hours
95 dB SPL at 4 hours
100 dB SPL at 2 hours
105 dB SPL at 1 hour
110 dB SPL at 1/2 hour
115 dB SPL at 15 minutes
120 dB SPL - avoid or damage may occur
CAUTION:
CAUTION: Plugging a mono 1/4” or 1/8” TS plug into the Headphone Out-
puts on the front or rear of the HA243 will cause permanent damage to the unit
because one side would be shorted to ground.
Never plug a mono plug into
Never plug a mono plug into
any of the Headphone Outputs THE HA243 WILL BE PERMANENTLY DAM-
any of the Headphone Outputs THE HA243 WILL BE PERMANENTLY DAM-
AGED.
AGED.
Tip
Sleeve
(ground)
Tip
Ring
Sleeve
(ground)
This is a MONO
jack and should
never be plugged
into the Head-
phone Output of
a HA243.
This is a TRS or
stereo jack that
is compatible
with the HA243
Headphone
Outputs.
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Rolls HA243 User manual

Rolls
Brand
Rolls
Model
HA243
Type
User manual
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