Soundstream Technologies Angina A4 User Manual

RUBICON

Angina

A4

Power Amplifiers

Owner’s Manual

and

Installation Guide

Conuru

fulations!

Table of Contents

You now own a Soundstream RUBICON amplifier, the product of an uncom­promising design and engineering philosophy. Your Soundstream RUBICON
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 capabilites and features. Please retain this
manual and your sales receipt for future reference.

Soundstream amplifiers are the result of American innovation and
with the highest quality control standards. When properly installed, they 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

#

craftmanship

Dealer’s Name

Date of Purchase

Installation Shop

Design Features for the ANGINA

Design Features for the A4

Callouts for the ANGINA

Callouts for the A4

Crossover Adjustments for the ANGINA..

Crossover Adjustments for the A4

Hawkins Bass

Wiring

Installation and Mounting

Level Setting and Trident Protection

........................................................................................

ControlTM

.............................................................

.....................................................................

Theory and Use

............................................................

................................................

......................................................... p 6 -7

..............................................

...........................................

....................................

...................................

p 4 -

p 8 - 9

pie-11

P12

p 12

p 13

Pl4

p

15

p 16

5

Installation

Prolonged listening at high

sounds better than anything you’ve ever heard, exercise

Date

CAUTION!

levek

may result in hearing loss.

Even though your new Soundstream

caution to prevent hearing damage.

2

R&icon amplifier

Sample System Diagrams

Troubleshooting and Service

F

1

Specifications for the ANGINA

Specifications for the A4..

.........................................................

.......................................................

......................................<............

...........................................................

3

p 17 - 20

p 21

p 22

p 23

Desiun

features of the

An&a

Desim

Features of the

An&a

SLA/SHTM

new dual function technology currently operates in two different ways
different models. In subwoofer applications the power supply tracks the
incoming audio signal and increases or decreases its own voltage level
to mirror the input. This design results in enormous low impedance, low
frequency stability and maximum efficiency, since no power is wasted

maintaining an unnecessarily high voltage level in the power supply.

TridentTM

1. Output protection against short circuits or improper loads.

2. Ground fault detection: Shuts down the amplifier when a significant
voltage
and battery ground.

3. Thermal Protection: Puts the amplifier into shutdown in extreme
thermal conditions.

Hawkins Bass

at 45Hz) and routes otherwise wasted amplifier power back to the au­dible bandwidth.

Harmonic Bass

are critically aligned to fundamental peaks at low frequencies. This pro­duces tighter, more accurate bass reproduction.

(Speaker Load Adapting I Subwoofer

Protection Topology provides three types of protection:

(>5

Volts) fluctuation occurs between electrical (turn-on lead)

ControlTM

AlignmentTM

provides a focused subwoofer boost

The 2nd and 3rd order harmonic peaks

Hyper-Efficient) This

in

(O-6dB

High Level Input with terminal block connector will accept a speaker
level input. This allows the user to hook this amplifier up to any factory
headunit.

Auto Turn On allows the amplifier to turn on without the use of a re­mote turn on wire, when the amplifier is using the high level inputs.

Remote Wire Output provides a
amplifier.

Line Level Output

to run the front speakers, while still retaining the factory head unit. This
option is only available when the high level inputs are used.

will allow the use of another Soundstream amplifier

+12

volt output to turn on another

Drive Delay

power supply eliminating turn-on pops. Turn off process is reversed:
Amplifier section turns off first, followed by the power supply.

ChassisinkTM

tween the circuit board and the heatsink to provide cool efficient ampli­fier operation.

Differentially Balanced RCA Input eliminates ground loop related
noise in the audio path.

Variable Crossover Network 12dB/octave low pass filter that is se-

lectable at 60, 80 or 1

Symmetrical Discrete Balanced Class A Drive Board auto-adjusts
for linear performance while driving low impedance loads.

llTM

Amplifier section powers up 2 to 3 seconds after the

All transistors are ideally located and sandwiched be-

OOHz.

4

Desiun

+

RUBITM

supply eliminates “power sags” during low frequency reproduction by
rapidly increasing the duty cycle, stabilizing the power supply and allow­ing it to deliver the power required when reproducing low frequencies.
Also, greater reserve gate power is now stored for low voltage conditions
that occur during extreme conditions.

Power Supply

Features of the A4

(Rapid-Use Branched Impulse) Our new power

Desiun Features of the A4

+ ChassisinkTM

and the heatsink to provide cool efficient amplifier operation in a smaller
package.

+

Continuously Variable

pass crossover variable from 50 to

All transistors are sandwiched between the circuit board

Lowpass

Crossover Networks

220Hz.

12dB/oct

low

+ STACTTM

stress by 50%. Use of inverted channels usually degrades the stereo
image due to phase reversal of even order harmonic distortion that oc­curs between the inverted channels. In the STACT design inversion is
done at the power amplifier drive stage. Since the fully symmetrical power
amplifier produces no even harmonic distortion itself and all preamp cir­cuitry (which does produce even harmonics) is run completely in phase,
no even harmonic distortion phase reversal occurs.

+ TridentTM

1.

2.
volt or greater) voltage fluctuation occurs between audio ground and bat­tery ground.

3.
conditions.

+

Hawkins Bass Control

wasted subsonic power to the audible bandwidth. The A4 contains the
fixed Hawkins Bass Control which allows you to boost bass 6dB at

45Hz.

+

Harmonic Bass AlignmentTM The 2nd and 3rd order harmonic peaks

are critically aligned to fundamental peaks at low frequencies. This pro­duces tighter, more accurate bass reproduction.

(Stabilized Apex Current

Protection

Output protection against short circuits or improper loads.
Ground fault detection shuts down the amplifier when a significant (5

Thermal protection will shut the amplifier down in extreme thermal

A built-in subsonic filter at 45Hz helps protect the speakers.

Three types of protection for

Provides focused subwoofer boost and routes

lopology)

Reduces power supply

RUBICON

amplifiers:

+

Built-in Staggered S.I.P. Crossover Networks

tronic crossover is designed to send high pass information to the ampli­fier with a

+

Flexible Input Level Control 200mV to 5V input sensitivity. Stereo

level control allows user to optimize system level control.

+

Symmetrical Discrete Balanced Class A Drive Boards

for linear performance in low impedance loads.

12dB/oct

slope.

Built-in high pass elec-

Auto-adjusts

+

Drive Delay II Muting

after power supply, eliminating turn on pops. Turn off process is reversed.
Amplifier section turns off first, followed by power supply.

+

Dynamically Optimized Power GridTM Power grid is now evenly dis-

tributed between primary and secondary power supplies, providing greater
dynamics and improved

TM

Amplifier section now powers up 2 - 3 seconds

RF

filtering.

6

7