Soundstream SMA2.340 Manuale utente

TABLE

OF CONTENTS-

PLANNING

MOUNTINGYOUR SYSTEM

- - -

- -

Amplifier'sprovidehigh-performancesound reinforcementfor you're

mobile audio equipment.The Multi-Modebridgingcapabilitiesallow

flexibility in hostingseveral different speaker configurations.

To achieveoptimum performance, it is highly recommendedthat you read

this Owners Manual before beginning installation.

FEATURES

DigitalFull rangeAmplifier

Fully regulatedMOSFET powersupply

PWM circuitry

2Ohm stable stereo

Tri-guardamplifier protection

IDI~

(

intelligent

Distresslndicator)givesa visual indicationof

the amplifiersprotectionstatus

Platinum RCA inputsandoutputs

Bi-linearselectable crossoverfor inputsandoutputs (HiIFulllLow)

Continuouslyvariable Highpassfilter

50~z-250~fi12dBslopes)

Continuouslyvariable Low passfilter

50Hz-250Hz

2dB slopes)

Subwooferequalizercontrol

0-1 2dB

Inputsensitivity

200mV-8V

Frequency response

10Hz-20KHz

SIN ratio

100dB

OEM floatingground input

Platinum4-gaugepower connectors

Tri-modeoperation

Specifications

Controls

Functions

SMA2.340

2.480

2.700

FRONT

SMA2.700 REAR

Controls

Functions

.-~

Controls

Functions

BASS

BOOST

I%i\

+I268

PWR(Power):This GREEN LED will illuminatewhen the amplifier

turned"ON".If itfails

usina the bass boostfunction, bass notesat 50Hz are em~hasizedas muchas 12dB. to illuminate,check the power connectionsto theAmplifier andfuses.

LlNEOUT LlNE IN

JJNE@..

LlNEOUT

CH~,.'"'

CHI

.--

CHI

power upthe amplifier again.

These inputs are for signal cablesfrom the source.Always use highquality shielded

RCA cables.

LlNEOUT LlNE IN LINE IN UNEOUT

CH3

CHI

CHI.."-".

PROT(h0tection):The amplifier protectioncircuitry

will

disablethe amplifierif input overload.

shod circuitor extremely hightemperature conditionsare detected.When the protection

mode

inoperation, the LED indicatoron the side panel

will

beilluminated,indicatingthe

amplifierhas gone intoa self-preservationmode.

Ifyou observethat the ProtectionLED is

lit,

pleasecheck the system carefullyto determine

what has causedthe protectionclrcuitto engage.The amplifier can

reset byturningthe

remote power off andthen on again. If the amplifier shut down dueto athermaloverload

condition, pleaseallow

to cooldown beforerestarting.If the amplifiershut down because

of an inputoverloador short circuit,

sure to repairthese conditionsbeforeattemptingto

The LlNE OUT allows you to build multipleamplifier systems without havingto use splitter

cords to distributethe signal. Now it is simply a matter of bringing one set of RCAS into

the first amplifier,then using the line out RCA jacks as the feed to the next amplifier.

Power

...

+IL~:..

Rnmmtn

~nma

Dueto the power requirementsof theAmplifier, this connectionshould bemade

directlyto the positive(+)terminal of battery.For safety measure, installanin-line

fuse Holder(notincluded)as closetothe batterypositive(+)terminalas possiblewith

anampererating

;

notto exceedtotalvalue of fuses inAmp.

---,

Power

. .

.....

Controls

Functions

.---

Power

To avoidunwantedignitionnoisecaused bygroundloops, it

essentialthat the

Amplifier begroundedto a clean, bare, metalsurfaceof thevehicleschassis.

Note

GROUND WIRE SHOULD NOT BE EXTENDED MORE THAN

METER).

Planning and MountingYour System

SPEAKER

SMA2.340/2.480/2.700

The mountingpositionof your Amplifierwlll have a great effecton its ability to

dissipate the heatgeneratedduring normaloperation.

Under normalconditions,the heatsink will dissipate sufficient heatto avoid thermal

shutdown. However pleasedo not installthe amplifier ina woodenbox or similar

deviceas this will preventheat dissipation intothe atmosphere.

CH3

CH4

SPEAKER

SMA4.680

Temperatures incartrunks have beenmeasuredas high as

55'F)

inthe summer

time. sincethethermalshut-downpoint for the amplifier

58'F)

easy to

see that itmust bemountedfor maximumcooling capability. To achieve

maximumadvantage of convectionair flow inanenclosed trunk, mountthe

amplifier ina horizontalposition.

Coolingrequirementsare considerablyrelaxedwhen mounting inside the passenger

compartmentsince the driver will notoffenallow temperatures to reacha critical

point. Floor mountingunderthe seat

usuallysatisfactoryas longas there

at least

inchof clearance

(2.54

cm)abovethe Amplifier'sfins for.ventilation.

A. Selecta suitablelocationthat

convenientfor mounting,

accessiblefor wiring.

And hasampleroom for air circulationand cooling.

Use the amplifier as a templatetomarkthe mountingholes. RemovetheAmplifier

anddrillholes. Use extremecaution,inspect underneathsurfacebeforedrilling!

SecuretheAmplifier usingthe screws provided.

coo

Tunina on the Am~lifier

The amplifier automatically turns on within a few seconds after remotevoltage Is applied.

If your system

set-upso that the headunitprovidesthe remotevoltage;then

would

turn on when your stere6 is turned on. Notethat there are alternate means of providing

the

volt remotecontrol signal, includinginstallingand auxiliaryswitch.

Adjusting The Audio Level

statedpreviously, it

importantto obtaina close matchbetweenthe source

unit's outputvoltageandthe amplifier's sensitivityor admittancesetting.

Use a screwdriver to turn GAlN (MIN

MAX)fully counterclockwiseto MIN.

Turn the auto sound system's volume controlto about one-thirdof its full range.

Adjust GAIN (MIN

MAX)

to a comfortablelisteninglevel.

Turn upthe auto sound system's volume controluntilthe sound beginstodistort.

Then immediatelyturn the volume downto a pointjust beforewhere the

distortionbegan.

Caution

Never

turn

upthe autosound system's volume controlmorethan

neededtoadjusttheaudiolevel, morethantwo thirds of Its maxlmumvolume.

Adjust GAIN (MIN

MAX) untilthe sound

atthe maximumlevelyou want the

amplifierto produce.

Adjust the auto soundsystem's volumecontrolto a comfortable listening level.

FREQUENCYRESPONSE BASS BOOSTON

+20dB

+lOdB

ode

-1OdB

-2OdB

-30dB 10 42 100 500 1K 5K 20K SOK

FREQUENCY

(Hz)

NOTE: RaisingtheBassfrequencyallows'higherfrequenclestoreachthebassspeakers

whileblockinglowerfrequenciesfrommidrangespeakers.LoweringtheBass

frequenciesallowslowerfrequencies

reochthemldrangespeakerswhile

blockinghigherfrequenclesfrombassspeakers.

Trouble

______-

Shooting

SYMPTOMS

SOUND

AMP NOT

NO SOUND

IN ONE

AMP TURNING

OFF

MEDIUM

HIGH

VOLUME

PROTECTION

LAMP ON

CHECK

the power

LED illuminated?

(NO)

Is the Diagnostic

LED illuminated?(YES)

No power to power wire

power to remote

wire with receiver on

Burnt or broken fuse

Check Speaker Leads

CheckAudio Leads

Check Speaker load

impedance

Shut down

Speaker wires shorted

REMEDY

Checkallfuses to amplifier.

Be sure Turn-on lead

connected

checksignal leads.

Checkgaincontrol.

Check TunerIDeck volume level.

Cleancontactson fuse holders.

Check for speaker short or

amplifier overheating.

Repairpower wire or connections.

Check connectionsto radio.

Replacefuse

Inspectfor short circult or an

open connection.

Reverse Left andRight RCA inputs

to determineif the problem

occurringbeforethe amp.

Be sure proper speaker load

impedancerecommendations

are observed.

(If you use anohmmeter to check

speaker resistance,please

remember that DC resistanceand

AC impedancemay not bethe same.)

Turn radiodown

Wait for AMP to cool

Separatespeaker wires and

insulate

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