Soundstream Reference Series 405S Installation Manual page 3

PROTECTION CIRCUITRY
Your REFERENCE405s amplifier is protected against both overheating and
short circuits by means of the following circuits:
Main power supply fuses
Circuit breakers on channels 1,2,3 & 4
Smart Power Supply Thermal Rollback 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.
NOTE: If you experience blown main power supply fuses, DO NOT increase
values beyond the original fuse value! Doing so will void your warranty and
TROUBLESHOOTING
PROBLEM
No sound and LEDs
no power or ground at amp
are not lit
no remote turn-on signal
blown fuse near battery
Fault LED is lit
amp power supply fuse is blown or missing
Repeatedly blown
check speaker configuration, amp may be in
amp fuse, frequent
"High Power" mode, put amp into "High Cur-
activation of Smart
rent" mode if speaker load is less than 1 ohm
Power Supply Circuit
(see p.8, "Setting High Power/High Current
Switch")
speaker or leads may be shorted
verify adequate amplifier ventilation
Channels 1,2,3 or 4
activation of the internal circuit breakers.
experiencing inter-
check to make sure channels 1-4 are driving a
mittent output
2 ohm per channel load or greater
speaker or leads may be shorted
SERVICE
Your Soundstream REFERENCE405s amplifier is protected by a limited
warranty. Please read the enclosed warranty card.
CAUSE
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TABLE OF CONTENTS
Design Features ................................................................. 4 - 5
REFERENCE405s Diagram ............................................... 6 - 7
Setting the High Power / High Current Switch ......................... 8
Selecting Input Modes ............................................................. 9
Wiring & Wiring Diagram ................................................ 10 - 11
Installation and Mounting ...................................................... 12
Level Setting ......................................................................... 13
Crossover Adjustments ......................................................... 14
AIRBASS™ ........................................................................... 14
System Installation Diagrams .......................................... 15 -17
Protection Circuitry ................................................................ 18
Troubleshooting .................................................................... 18
Service .................................................................................. 18
Specifications ........................................................................ 19
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