Memphis SC 2.120 Reference Manual

Page 1

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.

2 Channel Power Amplifier

Product Manual

SC 2.120

CONTINUOUS OUTPUT POWER RATED AT 14.4 VDC AND 1% THD (WATTS):

SC 2.120

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

35-50 10 8

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

CON TINUOU S POWER O UTPUT

INTO 4 O HM STER EO 120W X 2CH

INTO 2 O HM STER EO 210W X 2C H

INTO 4 O HM BRID GED 420W X 1 CH

REC OMMEND ED FUSE S IZE 2 X 25A

HEAT SINK DI MENSI ONS 10.5 1"(D) X 1 .91"( H) X 8.66 "(W)

FRE QUENCY R ESPON SE 3dB, 20 Hz - 20KH z

SIG NAL TO NOI SE RATIO >9 0dB

T.H.D 0.0 5 %

SIG NAL INPU T SENSE 30 0 mV - 8.0 V

LP VAR IABLE X- OVER 50H z - 250Hz @ 9dB/O CTAVE

HP VAR IABLE X- OVER 50 Hz - 250Hz @ 6dB/O CTAVE

H ig h er e f f ic i e nc y a t al l v o lu m e le v el s

U ni q u e st a ck i n g ca p ab i li t y

T he b e s t so u nd q u al i t y wi t ho u t t ak i ng u p t oo m u c h ro o m

2 t im e s t o 4 ti m es h i gh e r o ut p ut p o we r t ha n m o st a n al o g am p l if i er

R ed u ce d p o we r c on s um p t io n

A s ma l l a mo u n t of h e at d i ss i p at i on

E as y i ns t a ll a ti o n

C la s s- D D e lt a -S i g ma Te c hn o l og y

2 O hm s t a bl e M OS F ET a m p li f ie r d e si g n

P WM M O SF E T p ow e r su p pl y / M O SF E T ou t pu t s t ag e

A cc u ra t e s ta t ed a m p li f ie r r a ti n gs

R eg u la t e d am p li f i er t e ch n o lo g y

Va r i ab l e hi g h- p a ss c r os s ov e r( 5 0 Hz - 25 0 Hz )

Va r i ab l e lo w -p a s s cr o ss o ve r (5 0 H z- 2 50 H z)

S ub s on i c f il t er ( 2 0H z / O FF )

P ro t e ct i on : T h er m a l / Sh o rt / O v e r- L oa d / D C o ff e st

Th e Bes t Pow er / So und Q ua lit y / Eff ici en cy Fr om Co mpa ct Si ze.

Memphis Car Audio

122 Gayoso Ave.

Memphis, TN 38103

(901) 525-5711

memphiscaraudio.com

Page 2

System Example

2 Channel Power Amplifier SC 2.120

Operational Details

Set up Stacking

Top Cap

Tapping Screw

(M4 X 20)

Self-Tapping Screw

Second Unit

First Unit

(M4 x 20)

1 Channel Installation

GND

FUSE 25A 25A

FUSE

BRIDGE MODE

SPEAKER

REMOTE

LPL

OUTPUT

INPUT

+12V

RMT

Bridge ModeBridge Mode

2 Channel Installation

GND

FUSE 25A 25A

FUSE

BRIDGE MODE

SPEAKER

REMOTE

LPL

OUTPUT

INPUT

+12V

RMT

GND

FUSE 25A 25A

FUSE

BRIDGE MODE

SPEAKER

REMOTE

LPL

OUTPUT

INPUT

+12V

RMT

RemoteRemote ControlControl

(1)RCA INPUT : Connect these RCA connectors to a head unit with a LOW LEVEL output connection. RCA OUTPUT: Use these RCA output connectors to connect to a secondary amplifier.

(2)SPEAKER OUTPUT

See installation diagram in this manual for correct speaker connection.

(3)FUSES : Please ensure correct type of fuse is fitted.

(4)+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 connected during installation, as damage could result.

(5)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.

(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)SUBSONIC FILTER

This is a selectable switch that filters out 20Hz and below 12dB/octave.

(9)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.

(10)LOW PASS

Set the crossover switch to LP when a subwoofer is connected. Ensure the crossover frequency is set at 100Hz or below.

(11)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.

(12)POWER, STATUS AND THERMAL LED's

This shows if the amplifier has been correctly powered up and if any faults are present.

SUB

SONIC

20Hz

50Hz

250Hz

9988

1010

1111