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8. PROTECTION CIRCUITS
Your REFERENCE405 amplifier is protected against both overheating and short
circuits by means of the following circuits:
0
Main power supply fuses (2 at 20 amps each)
0
Smart Power Supply Thermal Rollback activating at
85OC.
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A fail-safe thermal protection circuit activating at
95OC.
0
Speaker over-current protection relays (on the 4 x 25 watt channels).
Your amplifier also incorporates an innovative Fault Diagnosis system that
identifies a blown power supply fuse.
0
If you experience blown main power fuses, DO NOT increase values beyond
20 amp (each) fuses.
9. TROUBLESHOOTING
PROBLEM
No sound and
LEDs
are not lit
Fault LED
is lit
Repeatedly
blown amp fuse,
frequent activation of Smart
Power Supply Circuit or
speaker protection circuit
breakers
no sound from subwoofer
channel with 2 or 4 channels of
input
no sound from channels
3
&
4 with 2 channels of input
CAUSE
0
no power or ground at
amp
0
no remote turn-on signal
0
blown fuse near battery
0
amp power supply fuse is
blown
0
check speaker
configuration, amp may be
in “High Power” mode, put
amp into “High Current”
mode if speaker load is
less than 2 Ohms (see
Section 2, Selecting
Operating Modes)
0
speaker or leads may be
shorted
0
verify adequate amplifier
ventilation
0
check input settings on
bottom of amplifier--switch
should be set at inputs
“I,
2, 3 or 4” unless using
external inputs
l
check input settings on
bottom of amplifier--switch
should be set at inputs “1
&
2”
10. SERVICE
Your Soundstream amplifier is protected by a limited warranty. Please read the
enclosed warranty card.
11.
SPECIFICATIONS
POWER OUTPUT
25 watts x 4 plus 100 watts x 1 (4 ohms, 12
V)
50 watts x 1 (4 ohms, 12 V, High
Current)
40 watts x 4 plus 120 watts x 1 (4 ohms, 14.4
V)
200 watts x 1 (2 ohms)
>240
watts x 1 (1 or
l/2
ohm)
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THD:
~0.1%
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Signal to Noise:
>lOO
dB
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Frequency Response: 20 Hz to 20
kHz
+/-
0.5
dB
(dedicated sub channel): 20 Hz to 400 Hz
+/-
0.5
dB
0
Bandwidth: 15 Hz to 50
kHz
(dedicated sub channel): 15 Hz to 1
kHz
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Stereo Separation:
>90
dB
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Damping:
>200
0
Input Sensitivity: 100
mV
-
2.5 V
a
Input Impedance: 12 k ohms
Crossover Specifications:
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High Pass: 12 dB/octave, Continuously Variable
from 60
-
240 Hz (front
&
rear)
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Low Pass: 24 dB/octave, Continuously Variable
from 30
-
120 Hz
Dimensions: 16” W x
9-l/2”
D x
2-l/4”
H
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