Soundstream Reference CLASS A 6.0 Owner's Manual
REFERE'NCE
ClassA3,O
ClassA6.0
Power Amplifiers
OWNERS MANUAL
AND
INSTALLATION GUIDE
SOUNDSTREAk”
TECHNOLOGIES
COMXA
You now own the REFERENCE Class A Amplifier, the product of an
uncompromising design and engineering philosophy. Your Soundstream
REFERENCE Class A 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.
TULA TION’S.
Model and Serial
Dealer’s Name
Date of Purchase
Installation Shop
Installation Date
#
TABLE OF CONTENTS
IO-I 1
.......
14-15
4-5
.6
12
13
15
16
Features
REFERENCE
............................................................................
Power Supply
Design.. ...................................
Passive and Electronic Crossovers .....................................
6
dB/octave
Passive Crossover Chart
12 dB/octave Passive Crossover Chart
Series and Parallel Wiring
LSE.Q
Theory and
Use
....................................................
..................................................
Setting High Power/High Current
Setting Coherent
Wiring..
....................................
Wiring Diagram
Installation
and
Stereom/Mixed
:.
..................................................................
Mounting..
..................................................
..................................
................................
........................................
Mono/Bridged Mono
.....................................
6
7
8
9
Level Setting.. .....................................................................
Protection Circuitry & Troubleshooting
...............................
Service ...............................................................................
Specifications
.....................................................................
17
18
18
19
3
MONO I
STEREO
63
I MIXED MONO
i-l,OH
CURRENT I
HIGH POWEI
DEStGN
l
Pure
FEATURES
Class A” Output Topology
for the utmost in musicality and definitive
power output. Soundstream’s uniqe design allows the Class A amplifiers to
deliver
uncomparable sonics
or, when operated at lower impedances, to
provide phenomenal amounts of power.
l
Uncompromising Design
and
Construction including mil-spec glass epoxy
circuit boards and high current custom gold-plated solid brass connections
accept up to 4 gauge power/ground wire. Use of 1% metal film capacitors in
the circuit path and ultra-tight tolerance components ensure unsurpassed
maximum musicality.
l
High Power/High Current Capability - Soundstream’s exclusive circuit which
permits customization of your amplifier to its particular application-high
current, low impedance loads (multiple subwoofers, less than 1 ohm mono) or
High Power, higher impedance loads (1 ohm mono and up).
l
Coherent
Stereo?rltixed
Mono selection for either “pure” stereo operation or
mixed mono for simultaneous stereo and mono.
l
ChassisinkTM
Darlington Power Array - Soundstream’s “overbuilding” of the
output section incorporates multiple output transistors instead of a few for
faster, stronger power delivery. The transistors are sandwiched between the
circuit board and the heatsink in a design called Chassisink” to ensure cool,
efficient
l
PowerGrid
amplifier operation.
Power Supply Design - All power supply components are located
near one another, connected by thick, wide PCB traces, which ensures rapid,
high current delivery. The entire power supply is isolated on one side of the
circuit board while the audio stage is located opposite it, guaranteeing minimal
noise.
l Ultra-Low ESR Capacitance Bank - Multiple small input power capacitors are
used to provide a lower ESR (Equivalent Series Resistance), which means
more power in and out faster.
l Smart Thermal Rollback - Most amplifiers shut off when they get too hot.
the unlikely event the REFERENCE amplifier reaches 85” C, it will gradually
roll back its average power (without affecting the dynamics). Once the
amplifier has cooled off, it returns to full power output. If overheating should
continue, a second thermal sensing protection circuit will shut off the amplifier
if the heatsink reaches 95” C.
l Unregulated Power Supply
meaning substantially greater output in the real world when the vehicle is
running, where voltages range from- 13.2 to 14.4 volts. In addition, the
amplifier will perform with as little as 9 volts and as much as 15 volts.
l Fault Monitor LED on the front panel notifies you of blown power supply
fuses.
l
l/4
ohm Drive Ability - The REFERENCE Class A amplifiers are designed to
drive virtually any load-all the way down to
l Dual Discrete Class A Drive Stages
amps, which maintains performance into low impedance loads.
l Drive
DelayTM
Muted Turn-on/off Circuit - A unique circuit which completely
eliminates any amplifier-related turn-on/off noises.
l Flexible Input Sensitivity accepts voltages from 100
maximum output from the amplifier with virtually any source unit.
l Balanced Input Design for added immunity to noise caused by component
and vehicle electrical system interaction.
l
LSE.Q
(Class A 6.0) fully adjustable subwoofer equalization circuit providing
frequency and
IeveP’Q”
adjustable subsonic filter protects woofers from damaging low frequency
information and maximizes output in a usable range.
-
4 ohm power ratings are measured at 12 volts,
114 ohm stereo (112 ohm mono).
-
Over six times the drive current of most
mV
to 2.5 V, permitting
adjustment for optimum subwoofer performance. An
In
5
REFERENCE POWER SUPPLY DESIGN
The REFERENCE Class A amplifiers employ an extremely efficient unregulated
pulse-width modulated power supply. REFERENCE Class A amplifiers from
Soundstream are rated at 12 volts but are designed to take advantage of the
additional voltage available when the vehicle is running. The two major
advantages of the unregulated power supply are:
l awesome dynamic power capabilities
l added continuous power with higher voltages (see chart below)
Because of the dynamic properties of most music, all audio components should
be able to react accordingly. Thanks to their unregulated power supplies, the
REFERENCE Class A amplifiers can comfortably exceed their rated power for
dynamic portions of the music.
4 Ohm Stereo Watts
,4.
,ohtn Power
26, in&&&
iaji&&
(REFERENCE
a:@ 12
x 2 @r
Class
vqts
14.4 volt!3
4~3.0 ,shown)
6
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