Soundstream Technologies 644s, 414s Troubleshooting, Protection Circuitry, Specifications

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TROUBLESHOOTING

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PROBLEM

No sound and power LED & noJ lit

No sound, power LED Is lit, and the AIRBASSTM option has not been added.

Fault LED is lit

Repeatedly blown amp fuse, frequent activation of Smart Power Supply Circuit

Channels 1,2,3 or 4 expenencing intermittent output (Reference414s only)

Unable to adjust the subwoofer

&midrange level separately. (Reference414s only)

No output from channels 3 & 4 with 1 pair of RCA inputs (Reference414s only)

Not enough input sensitivity while using the Balanced input (Reference644s only)

Left and Right Input Overload indicators lighting (Reference644s only)

Alternator whine while using Unbalanced RCA inputs (Reference644s only)

CAUSE

1 No power or ground at amp

1 No remote turn-on signal

1 Blown fuse near battery

1 No signal input

) The A/RBASSTM switch is in the “IN” position, Move it to the “OUT” position

I Amp power supply fuse is blown or missing

b Speaker or leads may be shorted

) Verify adequate amplifier ventilation

b activation of the internal circuit breakers.

b check to make sure channels l-4 are driving a 112 ohm per channel load or greater

a speaker or leads may be shorted

•Make sure that the subwoofers are wired to channels 1 & 2

•Select “lntemal from ch’s 1 & 2” on ch 3 & 4 input on the bottom of the amplifier. (see pages 14 - 17)

•Be sure both Left and Right Input Signal Switches are set to the “BAL”position

•Input signal level is too high - readjust input gains, or select the 0.55V input signal level range

•Make sure the channel 2 Input Signal Switch is in the “UNBAL”position.

•Try the Input Signal Switch for channels 1, 3

&4 in the “BAL”position; leave the switches in the quietest position. This will not affect the performance of the amplifier.

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PROTECTION CIRCUITRY

Your REFERENCE amplifier is protected against both overheating and short circuits by means of the following circuits:

•Main power supply fuses

•Auto High CurrentTM power supply

•Circuit Breaker on each channel (Reference414s only)

•Smart Power Supply Thermal RollbackTM activating at 85°C

•A fail-safe thermal protection circuit activating at 95°C

Your amplifier also incorporates an innovative Fault Diagnosis System that

identifies a blown power supply fuse.

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[hOTE: If you experience blown main power supply fuses, it is likely that the i amplifier is seeing a dead short, either in the speaker wire or in the speaker i itself Rectify the problem before blowing mu/tip/e fuses! DO NOT increase values beyond the original fuse value! Doing so will void your warranty and may damage your amplifier.

SPECIFICATIONS

POWER			4 Q Stereo	2 R Stereo	1 R Stereo	1 I2 R Stereo
(Watts)			(8 R Bridged)	(4 R Bridged)	(2 R Bridged)	(1 R Bridged)
			at 12 VDC
Reference41		4s	50 x 4	75 x 4	100x4	NA
			(100 x 2)	(150 x 2)	(200 x 2)
Reference644s			75 x 4	150x4	160x4	160x4
			(150 x 2)	(300 x 2)	(320 x 2)	(320 x 2)
THD				co. 1%
Signal-to-Noise				~100 dB
Frequency		Response		20 Hz to 20 kHz * 0.5 dB
Stereo	Separation			a90 dB
Damping				>200
Input	Sensitivity		(Ref414s):	200mV - 5.OV (Ref414s)
			(Ref644s):	200mV - 2.OV, or 500mV to 5.OV (Ref644s)
Input	Impedance			1 OK ohms
Crossover Output				340 mV output w/ZOO mV input (+4.5 dB)
Crossover		Specifications
Low Pass: 30 - 120 Hz at 24 dB/octave

SERVICE

Your Soundstream REFERENCE amplifier is protected by a limited warranty Please read the enclosed warranty card.

High Pass: 60 - 240 Hz at 12 dBloctave
Dimensions	(Ref414s):	15.25” W x 2.25” H x 9.8”D
	(Ref644s):	16.5” W x 2.25” H x 9.8”D

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