Soundstream Reference 405s Owner's Manual

SERIES AND PARALLEL WIRING

2-4 ohm drivers in parallel

= 2 ohms

REFERENCE

405s

5/3 Channel

Power Amplifier

OWNERS MANUAL

AND

2-4 ohm drivers in series

= 8 ohms

SOUNDSTREAM TECHNOLOGIES

120 Blue Ravine Road  Folsom  California 95630 USA

ph 916.351.1288  fax [phone]

rev B - 4.17.96

20

4-4 ohm drivers in parallel

=1 ohm

INSTALLATION GUIDE

1

CONGRATULATIONS!

You now own the REFERENCE405s Amplifier, the product of an
uncompromising design and engineering philosophy. Your
Soundstream REFERENCE405s amplifier will outperform any other
amplifier in the world.

To maximize the performance of your system, we recommend that you
thoroughly acquaint yourself with its capabilities and features. Please
retain this manual and your sales and installation receipts for future
reference.

Soundstream amplifiers are the result of American craftsmanship and
the highest quality control standards, and when properly installed, will
provide you with many years of listening pleasure. Should your
amplifier ever need service or replacement due to theft, please record
the following information, which will help protect your investment.

Model and Serial # ____________________________________
Dealer’s Name _______________________________________
Date of Purchase _____________________________________
Installation Shop ______________________________________
Installation Date ______________________________________

SPECIFICATIONS

REFERENCE405s - - Channels 1 & 2, 3 & 4

POWER

Watts

REFERENCE405s - - Subwoofer Channel

POWER

High Power

High Current

THD <0.1%
Signal to Noise >100 dB
Frequency Response (Ch's 1-4):

Frequency Response (Sub Ch):
Stereo Separation >90 dB

Damping >200

(12 Volts)

100 Watts 200 Watts 240 Watts n/a

50 Watts 100 Watts 200 Watts 240 Watts

4 Ω Stereo

(8 Ω Bridged)

(12 Volts)

25 Watts x 4 50 Watts x 4

4 Ω

2 Ω 1 Ω 1/2 Ω

20 Hz to 20 kHz ± 0.5 dB
20 Hz to 400 Hz ± 0.5 dB

2 Ω Stereo

(4 Ω Bridged)

CAUTION!

Prolonged listening at high levels may result in hearing loss. Even
though your new Soundstream REFERENCE405s amplifier sounds
better than anything you’ve ever heard, exercise caution to prevent

hearing damage.

2

Input Sensitivity (Ch 1-4):
Input Sensitivity (Subwoofer Ch):
Input Impedance

Crossover Specifications

High Pass (Channels 1 - 4):

Low Pass (Subwoofer Channel):

Dimensions

W x D x H:

200 mV - 5.0 V
80 mV - 5.0 V
12 kΩ

12 dB/octave, continuously vari­able from 60 to 240 Hz

24 dB/octave, continuously vari­able from 30 to 120 Hz

15.0” x 9.8” x 2.25”

19

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 CAUSE

No sound and LEDs
are not lit

Fault LED is lit

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

• no power or ground at amp

• no remote turn-on signal

• blown fuse near battery

• amp power supply fuse is blown or missing

• check speaker configuration, amp may be in

“High Power” mode, put amp into “High Cur­rent” mode if speaker load is less than 1 ohm
(see p.8, “Setting High Power/High Current
Switch”)

• speaker or leads may be shorted

• verify adequate amplifier ventilation

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

Channels 1,2,3 or 4
experiencing inter­mittent output

Your Soundstream REFERENCE405s amplifier is protected by a limited
warranty. Please read the enclosed warranty card.

• activation of the internal circuit breakers.

• check to make sure channels 1-4 are driving a

2 ohm per channel load or greater

• speaker or leads may be shorted

SERVICE

18

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