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TROUBLESHOOTING
PROBLEM
CAUSE
No sound and power LED &
noJ
lit
1
No power or ground at amp
1
No remote turn-on signal
1
Blown fuse near battery
No sound, power LED
Is
lit, and
the
AIRBASSTM
option has not
been added.
1
No signal input
Fault LED is lit
)
The
A/RBASSTM
switch is in the “IN”
position, Move it to the “OUT” position
I
Amp power supply fuse is blown or missing
Repeatedly blown amp fuse,
frequent activation of Smart
Power Supply Circuit
b
Speaker or leads may be shorted
)
Verify adequate amplifier ventilation
Channels
1,2,3
or 4
expenencing intermittent output
(Reference414s only)
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
Unable to adjust the subwoofer
&
midrange level separately.
(Reference414s only)
l Make sure that the subwoofers are wired to
channels 1
&
2
No output from channels 3
&
4 l Select “lntemal from ch’s 1
&
2” on ch 3
&
4
with 1 pair of RCA inputs input on the bottom of the amplifier. (see
(Reference414s only)
pages 14
-
17)
Not enough input sensitivity
while using the Balanced input
(Reference644s only)
Left and Right Input Overload
indicators lighting
(Reference644s only)
l Be sure both Left and Right Input Signal
Switches are set to the “BAL” position
l Input signal level is too high
-
readjust input
gains, or select the
0.55V
input signal level
range
Alternator whine while using
Unbalanced RCA inputs
(Reference644s only)
l Make sure the channel 2 Input Signal
Switch is in the
“UNBAL”
position.
l 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.
.a...
SERVICE
Your Soundstream REFERENCE amplifier is protected by a limited warranty
Please read the enclosed warranty card.
26
.
..a*
PROTECTION CIRCUITRY
Your REFERENCE amplifier is protected against both overheating and short
circuits by means of the following circuits:
l Main power supply fuses
l Auto High
CurrentTM
power supply
l Circuit Breaker on each channel (Reference414s only)
l Smart Power Supply Thermal
RollbackTM
activating at 85°C
l 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.
[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
(Watts)
4
Q
Stereo 2
R
Stereo
1
R
Stereo
1
I2 R
Stereo
(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
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
27