PROTECTION ClRCUlTRY
SERVICE
Your REFERENCE604
is protected against both overheating and short circuits
by means of the following circuitry:
.
Main power supply fuses (2 at
30 amps each)
. Smart Power Supply Thermal Rollback activating at 65°C.
l
A fail-safe thermal protection circuit activating at 95°C.
Your amplifier also incorporates an innovative Fault Diagnosis system that
identifies blown
power
supply fuses when the “Fault” LED is illuminated.
NOTE:
M
you
experience blown main power supply fuses, DO NOT increase
values beyond the 30 amp
(eachJ
fuses!
Doing so
will
void your
wananfy
and
may damage your
amplifier.
TROUBLESHOOTING
Fault LED is lit
l
amp power supply fuse is blown
or missing
Repeatedly
blown amp fuse,
. check speaker configuration,
frequent activation of Smart Power amp may be in “High Power”
Supply Circuit mode, put amp into “High
Current” mode if speaker load is
less than 2 ohms (see p.7,
“Setting High Power/High Current
Switch”)
. speaker or leads may be shorted
. verify adequate amplifier
)
ventilation
no sound from channels 3
8
4 with . check input settings on bottom of
2 channels of input
amplifier-stitch should be set to
inputs “1
8
2
Your
Soundstream REFERENCE amplifier is protected by a limited warranty.
Please read the enclosed warranty card.
)
’
SPECIFICATIONS
POWER OUTPUT
4
R
stereo
2
n
stereo
1
R
Stereo
112
n
stereo
(8
R
Bridged) (4
n
Bridged) (2
R
Bridged)
(1
Q
Bridged)
High Power
75x4
125x4
150x4
n/a
Watts
(150x2)
(250
x
2)
(300
x
2)
High Current
37.5
x
4
75x4
125x4
150x4
Watts
(75
x
2)
(150x2)
(250
x
2)
(300 x 2)
THD
<O.l%
Signal to Noise
~100
dB
Frequency Response
20 Hz to 20
kHz
+I- 0.5
dB
Bandwidth
15Hzto50kHz
Stereo Separation
~90
dB
Damping
s200
Input Sensitivity
lOOmV-2.5V
Input Impedance
12 k ohms
Crossover Output
400
mV
output
w/l00
mV
input (+I2
dB)
(
FROSSOVER
SPECIFICATIONS
‘,‘(same
for channels
7
&
2, 3
&
4, and outputs)
High Pass: 12
dB/octave,
continuously variable from 60
-
240 Hz
Low Pass:
24
dB/octave,
continuously
variable from 30
-
120 Hz
DIMENSIONS
151/4”Wx91/2=Dx2114”H
22
23
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