Memphis SC 4.55 User manual

Memphis
Brand
Memphis
Model
SC 4.55
Category
Car audio amplifiers
Type
User manual
Specifications
DUE TO ON-GOING CONTINUOUS PRODUCT DEVELOPMENT, FEATURES, SPECIFICATIONS AND AVAILABILITY ARE SUBJECT TO CHANGE WITHOUT NOTICE.
dB level example
30 Quiet library, soft whispers
40 Living room, refrigerator, away from traffic
50 Light traffic, normal conversation, quiet office
60 Air conditioner at 20 feet, sewing machine
70 Vacuum cleaner, hair dryer, noisy restaurant
80 Average city traffic, garbage disposals, alarm clock at 2 feet
The following noises can be dangerous under constant exposure
90 Subway, motorcycle, truck traffic, lawn mower
100 Garbage truck, chain saw, pneumatic drill
120 Rock band concert in front of speakers, thunderclap
140 Gunshot blast, jet plane
180 Rocket launching pad
Information courtesy of the Deafness Research Foundation.
Memphis Car Audio
122 Gayoso Ave.
Memphis, TN 38103
(901) 525-5711
memphiscaraudio.com
4 Channel Power Amplifier
4 Channel Power Amplifier
Product Manual
SC 4.55
CONTINUOUS OUTPUT POWER RATED AT 14.4 VDC AND 1% THD (WATTS):
SC 4.55
SC 4.55
POWER CABLE CALCULATOR
Total Amperage 0-4ft 4-7ft 7-10ft 10-13ft 13-16ft 16-19ft 19-22ft 22-28ft
0-20 14 12 12 10 10 8 8 8
20-35 12 10 8
8
6
4
4
4
2
8
6
4
4
2
2
0
6
4
4
2
2
0
0
6
4
4
2
2
0
0
6
4
4
2
2
0
0
6
4
2
0
0
0
0
35-50 10 8
8
6
6
4
2
50-65 8
65-85 6
85-105 6
105-125 4
125-150 2
The above chart shows cable gauges to be used, if no less than a 0.5 volt drop is acceptable. If aluminum wire or tinned wire i s used, the gauges
sould be of an even larger size to compensate. Cable gauge size calculation takes into account terminal connection resistance. 1 Metre = 3.28 Feet
CO NTINUOUS POW ER OU TPUT
IN TO 4 OHM STEREO 55W X 4CH
IN TO 2 OHM STEREO 110W X 4C H
IN TO 4 OHM BRIDGE D 230W X 2 CH
RE COMMENDED FU SE SIZE 2 X 30A
HE ATSINK DIMENS IONS 10.51 "(D) X 1.91"(H ) X 8.66"(W)
FR EQUENCY RESP ONSE 3dB, 2 0Hz - 20KHz
SI GNAL TO NOISE R ATIO >90dB
T.H.D 0.05 %
SI GNAL INPUT SEN SE 300 m V-8.0V
LP VARIABLE X-OVE R 50Hz - 250Hz @9dB /OCTAVE
HP VARIABLE X-OVE R 50Hz - 250Hz @6dB /OCTAVE
The Best Power / Soun d Qu al it y / Ef f iciency From Co mpact Si ze .
H i g h e r e f f i c i e n c y a t a l l v o l u m e l e v e l s
U n i q u e s t a c k i n g c a p a b i l i t y
T h e b e s t s o u n d q u a l i t y w i t h o u t t a k i n g u p t o o m u c h r o o m
2 t i m e s t o 4 t i m e s h i g h e r o u t p u t p o w e r t h a n m o s t a n a l o g a m p l i f i e r
R e d u c e d p o w e r c o n s u m p t i o n
A s m a l l a m o u n t o f h e a t d i s s i p a t i o n
E a s y i n s t a l l a t i o n
C l a s s - D D e l t a - S i g m a Te c h n o l o g y
2 O h m s t a b l e M O S F E T a m p l i f i e r d e s i g n
P W M M O S F E T p o w e r s u p p l y / M O S F E T o u t p u t s t a g e
A c c u r a t e s t a t e d a m p l i f i e r r a t i n g s
R e g u l a t e d a m p l i f i e r t e c h n o l o g y
Va r i a b l e h i g h - p a s s c r o s s o v e r ( 5 0 H z - 2 5 0 H z )
Va r i a b l e l o w - p a s s c r o s s o v e r ( 5 0 H z - 2 5 0 H z )
S u b s o n i c f i l t e r ( 2 0 H z / O F F )
P r o t e c t i o n : T h e r m a l / S h o r t / O v e r - L o a d / D C o f f e s t
System Example
4 Channel Power Amplifier
SC 4.55
Operational Details
Set up Stacking
Top Cap
Self-Tapping Screw
(M4 x 20)
Tapping Screw
(M4 X 20)
Second Unit
First Unit
+12V
GND
L LR R
FUSE
30A
FUSE
30A
SPEAKER
FRONT REAR
INPUT
FRONT REAR
R
L
BRIDGE
MODE
BRIDGE
MODE
RMT
12
3
4
5
6
SUBSUB
SON ICSON IC
20Hz20Hz
9
8
10
11
7
98
10
11
12
7
+12V
GND
L LR R
FUSE
30A 30A
FUSE
SPEAKER
FRONT REAR
INPUT
FRONT REAR
R
L
BRIDGE
MODE
BRIDGE
MODE
RMT
Bridge ModeBridge Mode Bridge ModeBridge Mode
30A 30A
+12V
GND
L LR R
FUSE FUSE
SPEAKER
FRONT REAR
INPUT
FRONT REAR
R
L
BRIDGE
MODE
BRIDGE
MODE
RMT
Bridge ModeBridge Mode
30A 30A
+12V
GND
L LR R
FUSE FUSE
SPEAKER
FRONT REAR
INPUT
FRONT REAR
R
L
BRIDGE
MODE
BRIDGE
MODE
RMT
2 Channel Installation
3 Channel Installation
4 Channel Installation
(1)RCA INPUT : Connect these RCA connectors to a head unit with a LOW LEVEL output connection.
(2)SPEAKER OUTPUT
See installation diagram in this manual for correct speaker connection.
(3)REMOTE INPUT
This terminal is for turning the amplifier on and off. This requires a switched positive (+)12V to power 'ON' the amplifier, this can be
found on the rear of the head unit in the form of an electric antenna output, or a remote turn-on output. If not available you can wire to the
ACC position on the key.
(4)FUSES : Please ensure correct type of fuse is fitted.
(5)+12V INPUT
This must be connected to the vehicle battery positive(+) terminal via correct power cable and with an inline fuse or circuit breaker
at the battery end. NOTE : This is to be the last wire to connected during installation, as damage could result.
(6)GROUND INPUT
Connect directly to the vehicle's chassis via correct cable. NOTE : This is to be the first wire connected when wiring up the
amplifier, as damage could result if this is not done.
(7)CROSSOVER SELECTOR
Set the appropriate mode of operation. The 3 positions available are OFF, LP and HP.
(8)HIGH PASS
Set the crossover switch to HP and turn this control to 65Hz or above when using speaker's smaller than 6 x 9", this feature
is designed to filter out all low bass frequencies that only SUBWOOFERS should produce.
(9)LOW PASS
Set the crossover switch to LP when a subwoofer is connected. Ensure the crossover frequency is set at 100Hz or below.
(10)LEVEL (GAIN)
This allows level adjustment of the input signal. Use this control to correctly match the amplifier. To set this control correctly,
turn the amplifier level to MIN and the head unit to 3/4 volume, with the BASS and TREBLE on zero, then slowly turn up this amplifier
level control towards towards the MAX end of the control. NOTE : If the sound becomes distorted, turn this control down.
(11)SUBSONIC FILTER
This is a selectable switch that filters out 20Hz at 9dB/octave.
(12)POWER, STATUS AND THERMAL LED's
This shows if the amplifier has been correctly powered up and if any faults are present.
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Memphis SC 4.55 User manual

Memphis
Brand
Memphis
Model
SC 4.55
Category
Car audio amplifiers
Type
User manual
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