Soundstream Reference Series 200 Programming manual

REFERENCE

200/300/500

Power Amplifiers

OWNERS MANUAL

AND

INSTALLATION GUIDE

SOUNDSTREAM

T E C H N 0 L 0 G IE S

COAERA

TULA

TIONS!

You now own the REFERENCE Amplifier, the product of an

uncompromising design and engineering philosophy.

Your

Soundstream REFERENCE 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

UTIOE”

‘Vi

Prolonged listening at high levels may

result in hearing loss. Even

though7your

new

Soufidsk?am

REFERENCE

amp!ifier

sounds better

than anything you’ve ever heard, exercise caution to prevent hearing

damage.

TABLE OF CONTENTS

Features ...........................................................................

.4-5

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

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

1 O-l 1

Setting High Power/High Current........................................

Setting Coherent

StereoTM/Mixed

Mono/Bridged Mono

....... 13

Wiring

............................................................................. 14-15

Wiring Diagram

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

Installation and Mounting ....................................................

Level Setting ......................................................................

Protection Circuitry

Troubleshooting ...............................

Service ...............................................................................

Specifications .....................................................................

REFERENCE Amdlifier

(REFERENCE500

stitiwh)

Hsndcmfkd

in the

U.S.A.

OND

REMOTE

+L-

-RI

HIGH

CURRENT

“KM

POWER

MONO

STEREO/MIXED MONO

DESIGN FEATURES

Uncompromising Design and

Construction including

mil-spec

glass epoxy

circuit boards and high current custom gold-plated solid brass connections

that will accept up to 4 gauge power/ground wire (8 gauge on the REF200).

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 2 ohms mono)

or High Power, higher impedance loads (2 ohms mono and up).

Coherent

Stereo%illxed

Mono

selection for either “pure” stereo operation

or mixed mono for simultaneous stereo and mono.

Chassisink” 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

ChassisinkM

to ensure cool,

efficient amplifier operation.

l PowerGrid 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 -4 ohm power ratings are measured at 12 volts,

meaning substantially greater output in the real world when the vehicle is

running, where voltages range from 13.2 to 14.4 volts.

l Fault Monitor LED on the front panel notifies you of blown power supply

fuses.

112

ohm Drive Ability

The REFERENCE amplifiers are designed to drive

virtually any load-all the way down to

l/2

ohm stereo (1 ohm mono).

l Dual Discrete Class A Drive Stages

Over six times the drive current of most

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

to 2.5 V, permitting

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

(REFERENCESOO)

fully adjustable subwoofer equalization circuit

providing frequency and

leve/“Q”

adjustment for optimum subwoofer

performance. An adjustable subsonic filter protects woofers from damaging

low frequency information and maximizes output in a usable range.

REFERENCE POWER SUPPLY DESIGN

The REFERENCE amplifiers employ an extremely efficient unregulated

pulse-

width modulated power supply. REFERENCE 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:

awesome dynamic power capabilities

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 amplifiers can comfortably exceed their rated power for dynamic

portions of the music.

4 Ohm Stereo Watts

20 40 60

4 ohm Power

25wattsx2@12volts

watts x

14.4 volts

(REFERENCE200

shown)

PASSIVE AND,ELECTRONIC

CRbSSOtiERS

r’our

REEERENCE

amplifier is unique in its ability to switch between Coherent

3tereoTM

and mixed mono output mode. The REFERENCE amplifiers are

zapable

of driving

a,complete

subwoofer and satellite system in the

Mixed.Mono

configuration.

However, for lowest distortion, maximum output, and best sound

quality, we recommend that you use an electronic crossover and multiple

:hannels

amplificbtion.

f a single REFERENCE amplifier is to driie a subwoofer and satellite system,

Dassive

high and low pass crossovers will be necessary. Use the charts on

Dages

7 8 8 to

detem\ine

the values of the

crossover,components.

6 dB/OCTAVE

PASSIVE CROSSOVER CHART

‘,

lrr--

/‘

8’

--+&-----

6 dB/octave

hi_sh

pass

Y-L----

,/”

6 dB/octave low pass

KEY

L = high quality (DCR

1 ohm) inductor/coil

C = non-polarized 50 v (or greater) capacitor

FREQ.

80 Hz

100 Hz

130 Hz

200 Hz

280 Hz

400 Hz

600 Hz

800 Hz

1000 Hz

1200 Hz

1800 Hz

4000 Hz

2 ohms

4.1

3.1

2.4 mH

1.6 mH

1.2 mH

0.8

0.5

0.41 mH

0.31 mH

0.25

0.16

0.08

1000

800 pF

600

400

300 pF

200

138

100 pF

4 ohms

8.2 mH

6.2

4.7

3.3 mH

2.4

1.6 mH

1.0 mH

0.82

0.62

0.51 mH

0.33

0.16

500

400 pF

300

200

150 pF

100 pF

68 pF

39 pF

33 pF

IOpF

8 ohms

12mH

10mH

8.8

4.7

3.3

2.0

1.6

1.2

1.0

0.88

0.33

250

200 pF

150 pF

100 pF

75 pF

50 pF

28 pF

16pF

IOpF

112

dB/OCTAVE

PASSIVE CROSSOVER CHART

dWoctave

hilsh

pass

dB/octave

low pass

KEY

= high quality (DCR

ohm) inductor/coil

Cl = non-polarized 50 v (or greater) capacitor

FREQ.

80 Hz

100 Hz

130 Hz

200 Hz

260 Hz

400 Hz

600 Hz

800 Hz

1000 Hz

1200 Hz

1600 Hz

4000 Hz

2 ohms

Ll Cl

5.5

4.7

3.3

2.2

1.8mH

1.1

0.75

0.5

0.47

0.33

0.27

0.10

680

560

400

300

200

150

100

4 ohms

Ll Cl

9.1

6.8

4.7

3.6

2.2

1.5mH

1.0 mH

0.9

0.75

0.50

0.22

330

270

200

15opF

100

)rF

15pf

6.8

8 ohms

Ll Cl

18mH

15mH

9.1

6.8

4.7

3.0 mH

2.0

1.8mH

1.5 mH

1.0 mH

0.47

180

150

100

15pF

13pF

6.8

3.3

SERIES AND PARALLEL WIRING

Below are examples of series and parallel wiring configurations. Please note

how the impedances differ with the different configurations.

Amplifier

r-P%7

jidl

Jkk&

;“4

Ohm

“1

4 Ohm

“\,,

2-4

ohm drivers in parallel

2 ohms

Amplifier

/“4

Oh;

‘>

/‘4

Ohm

‘\‘,

4-4 ohm drivers in parallel

ohm

2-4 ohm drivers in series

= 8 ohms

LSE.Q

a unique subwoofer

control circuit included with the

SOUNDSTREAM REFERENCE500

amplifier. It is capable of removing

subsonic energy in program material.

The circuit consists of two controls.

One adjusts the frequency of

operation and the other adjusts the

range of boost, With both controls

adjusted fully counter-clockwise, no

boost is applied and the amplifier is

flat in response down to 20 Hz.

The

frequency control (Hz)

adjusts

the starting point of the subsonic

filter. This high pass filter can be

adjusted from 20 Hz up to a

maximum of 60 Hz. This control is

useful for setting the lowest

frequency that your subwoofer will

see. (See figure 1)

LSE.Q

(

FEa

B&T

(

FIG. 1

LSEQ

FIG. 4 Variable

“Q”

The

control adjusts the amount of

boost applied at the set frequency.

This is adjustable from

.707

(flat) to

2.8 (+9

dB).

(See figure 2)

FIG.

Variable

‘Q

When the

is set to

.707

(Butterworth), LSE.Q acts as a sub-

sonic filter only. (See figure 3)

LSE.Q THEORY AND USE

FIG. 3 Variable High Pass

The simple act of removing the signal

below the vented tuning frequency can

improve system output by as much as

dB.

With Q values greater than

,707, boost is added in addition to the

sub-sonic filter. (see figure 4)

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