Adjusting The Audio Level

Tunina on the Am~lifier

Trouble Shooting- -

The amplifier automatically turns on within a few seconds after remotevoltage Is applied. If your system is set-upso that the headunit providesthe remotevoltage; then it would turn on when your stere6 is turned on. Note that there are alternate means of providing

SYMPTOMSCHECK

REMEDY

the 12 volt remotecontrol signal, including installingand auxiliary switch.

---- -----

As stated previously, it is important to obtain a close match between the source unit'soutput voltage and the amplifier'ssensitivity or admittance setting.

1.Use a screwdriver to turn GAlN (MINI MAX)fully counterclockwiseto MIN.

2.Turn the auto sound system'svolume control to about one-thirdof its full range.

3.Adjust GAIN (MINIMAX) to a comfortable listening level.

4.Turn up the auto sound system'svolume control until the sound begins to distort. Then immediately turn the volume down to a point just before where the distortionbegan.

Caution :Never turn up the auto sound system'svolume control more than neededto adjust the audio level, more than two thirds of Its maxlmumvolume.

5.Adjust GAIN (MIN/ MAX) until the sound is at the maximum level you want the amplifier to produce.

6.Adjust the auto sound system'svolume control to a comfortable listening level.

	FREQUENCY RESPONSE					BASS BOOST ON
	+20dB
-	+lOdB
-
B
z	ode
z
Wa -1OdB
IY
	-2OdB
	-30dB	42	100	500	1K	5K	20K	SOK
	10	42	100	500	1K	5K	20K	SOK

FREQUENCY(Hz)

NOTE: Raisingthe Bass frequencyallows'higherfrequencles to reachthe bassspeakers while blockinglowerfrequencies from midrangespeakers. LoweringtheBass frequencies allowslowerfrequencies to reochthe mldrangespeakers while blockinghigherfrequencles from bassspeakers.

NO SOUND

AMP NOT

NO SOUND IN ONE

AMP TURNING OFF MEDIUM / HIGH VOLUME

PROTECTION LAMP ON

1s the power LED illuminated? (NO)

Is the Diagnostic LED illuminated?(YES)

No power to power wire

NO power to remote wire with receiver on

Burnt or broken fuse

Check Speaker Leads

'Check Audio Leads

Check Speaker load impedance

Shut down

Speaker wires shorted

Check all fuses to amplifier.

Be sure Turn-on lead is connected check signal leads.

Check gain control.

Check TunerIDeck volume level. Clean contacts on fuse holders.

Check for speaker short or amplifier overheating.

Repair power wire or connections.

Check connections to radio.

Replace fuse

Inspectfor short circult or an open connection.

Reverse Left and Right RCA inputs to determine if the problem is occurring before the amp.

Be sure proper speaker load impedance recommendations are observed.

(If you use an ohmmeter to check speaker resistance, please remember that DC resistanceand

AC impedance may not be the same.)

Turn radio down

Wait for AMP to cool

Separate speaker wires and insulate

SMA2.700, SMA4.680, SMA2.340, SMA2.480 specifications

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For larger setups, the Soundstream SMA4.680 offers both robustness and versatility. This 4-channel amplifier delivers a staggering 6,800 watts of peak power, ideal for driving multiple speakers or subwoofers. With dual power supply architecture, the SMA4.680 ensures stable power delivery even at high volumes. It also includes features like adjustable low-pass and high-pass filters, enabling fine-tuning of sound frequencies according to user preferences.

Lastly, the Soundstream SMA2.700 is well-regarded for its blend of power and efficiency. With peak output of 2,700 watts, this 2-channel amplifier is designed for those who desire rich bass responses without sacrificing clarity. The SMA2.700 incorporates advanced thermal protection circuitry, which prevents overheating during intense usage, ensuring longevity and reliability.

Each of these models from Soundstream Technologies represents a commitment to quality, power, and user control, making them suitable for both novice users and seasoned audiophiles alike. With a focus on innovative technology and top-tier performance, Soundstream continues to define excellence in car audio systems.