Soundstream Picasso Manuel de service

REFERENCE Class A

PICASSOPICASSO

4/3/2 Channel

Power Amplifier

OWNERS MANUAL AND

INSTALLATION GUIDE

CONGRATULATIONS!

You now own the REFERENCE Class A PICASSOPICASSO Amplifier, the most musical amplifier ever

created for the 12 volt environment. Your Soundstream REFERENCE Class A PICASSO

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.

Serial # _____________________________________________

Dealer’s Name _______________________________________

Date of Purchase _____________________________________

Installation Shop ______________________________________

Installation Date ______________________________________

CAUTION!

Prolonged listening at high levels may result in hearing loss. Even

though your new Soundstream REFERENCE Class A PICASSO amplifier

sounds better than anything you’ve ever heard, exercise caution to

TABLE OF CONTENTS

Design Features........................................................................................................4 -5

REFERENCE Class A PICASSO Diagram.....................................................................6 -7

Selecting Input Modes ...................................................................................................8

Balanced / Unbalanced Input.........................................................................................9

Wiring (with Diagram)..................................................................................................10

Installation and Mounting.............................................................................................11

Level Setting................................................................................................................12

System Installation Diagrams.................................................................................13 -17

Protection Circuitry.......................................................................................................18

Troubleshooting...........................................................................................................18

Service.........................................................................................................................19

Specifications...............................................................................................................19

ATTENTION!

Your new Soundstream REFERENCE Class A PICASSO amplifier is a purist, high-fidelity

amplifier designed to maximize the performance of 4 or 2 ohm component loudspeakers.

Do not waste its musicality trying to drive subwoofers. For high-current, low impedance

DESIGN FEATURES

•Audiophile Circuit Topology -The REFERENCE Class A PICASSO is designed with the

shortest signal path possible, resulting in the most sonically transparent amplifier

Soundstream has ever built!

•2 ohm Satellite Drive Ability -The REFERENCE Class A PICASSO amplifier is designed to

drive satellite speaker loads down to 2 ohm stereo (4 ohm mono).

•Esoteric Quality Components including polypropelene capacitors in the signal path, and

high performance monolithic dual ultra-low noise precision operational amplifiers to ensure

the fullest, clearest musical reproduction possible.

•Pure Class A® Output Topology for the utmost in musicality and definitive power output.

Soundstream's unique design allows the REFERENCE Class A PICASSO amplifier to deliver

incomparable sonics.

•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.

•Coherent StereoTM/Mixed Mono selection for either “pure” stereo operation or mixed mono

for simultaneous stereo and mono.

•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

ChassisinkTM to ensure cool, efficient amplifier operation.

•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.

•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.

•Smart Thermal Rollback -Most amplifiers shut off when they get too hot. In the unlikely

event the REFERENCE Class A PICASSO 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.

•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.

•Fault Monitor LED on the top panel notifies you of blown power supply fuses.

•Dual Discrete Class A Drive Stages -Over six times the drive current of most amps, which

maintains performance into low impedance loads.

•Drive DelayTM Muted Turn-on/off Circuit -A unique circuit which completely eliminates any

amplifier-related turn-on/off noises.

•Flexible Dual Input Level Sensitivity accepts 2 voltage ranges; from 200 mV to 2.0 V and

from 500 mV to 5.0 V, permitting maximum output from the amplifier with virtually any source

unit.

•Differential Balanced Input Design for added immunity to noise caused by component and

vehicle electrical system interaction.

•Discrete Matched Pair True Balanced Input for professional-quality performance and noise

cancellation. The 6-pin din plug carries (+) and (-) Signal information for Left and Right

channels, audio ground, and ±15 Vdc to operate the Soundstream BLT Balanced Line

Transmitter.

PICASSOPICASSO

Key to Callouts

1. Fault LED -Indicates a blown fuse.

2. Power LED -Indicates amplifier power on.

3. Input Overload Indicators -Indicates the signal input level or input gain level is too high -

channels 1 & 2.

4. Input Level Selector Switch -Selectable input sensitivity range from 0.2-2 Volts RMS, or

from 0.5-5 Volts RMS -channels 1 & 2.

5. Left Channel Balanced / Unbalanced Input Selector Switch -Select "Balanced" to use

the 6 pin Balanced signal Input. Select "Unbalanced" to use the RCA signal inputs -

channel 1.

6. Right Channel Balanced / Unbalanced Input Selector Switch -Select "Balanced" to use

the 6 pin Balanced signal Input. Select "Unbalanced" to use the RCA signal inputs -

channel 2.

7. Input Overload Indicators -Indicates the signal input level or input gain level is too high -

channels 3 & 4.

8. Input Level Selector Switch -Selectable input sensitivity range from 0.2-2 Volts RMS, or

from 0.5-5 Volts RMS -channels 3 & 4.

9. Left Channel Balanced / Unbalanced Input Selector Switch -Select "Balanced" to use

the 6 pin Balanced signal Input. Select "Unbalanced" to use the RCA signal inputs -

channel 3.

10.Right Channel Balanced / Unbalanced Input Selector Switch -Select "Balanced" to use

the 6 pin Balanced signal Input. Select "Unbalanced" to use the RCA signal inputs -

channel 4.

11.Main Fuse -Main power supply fuse. Replace only with the same value fuse.

12.+12V -Connect to a fuse or circuit breaker, then to the battery's positive post.

13.GND -Main ground connection. Bolt to a clean chassis ground in the vehicle.

14.REM -Remote turn-on input from the head unit. Accepts +12V.

15.Speaker Output Connections -Channels 1 & 2.

16.Input Level -Independent Left and Right channel input level controls -ch's 1 & 2.

17.Balanced Signal Input Connector -6-pin Balanced signal input connector for use with the

Soundstream BLT Balanced Line Transmitter -channels 1 & 2.

18.Inputs -Channel 1 & 2 RCA (Unbalanced ) inputs.

19.Speaker Output Connections -Channels 3 & 4.

20.Input Level -Independent Left and Right channel input level controls -ch's 3 & 4.

21.Balanced Signal Input Connector -6-pin Balanced signal input connector for use with the

Soundstream BLT Balanced Line Transmitter -channels 3 & 4.

22.Inputs -Channel 3 & 4 RCA (Unbalanced ) inputs.

23.Coherent Stereo/Bridge/Mixed Mono switch -Channels 1 & 2; Select "Bridge" for

bridged mono operation (use right channel input). Select "Stereo" for coherent stereo

operation. Select "Mixed Mono" for simultaneous stereo / bridged mono operation.

24.Channels 3 & 4 Input Select -Selectable inputs from internal (from channels 1 & 2) or

external (from channels 3 & 4 local balanced or unbalanced inputs).

25.Coherent Stereo/Bridge/Mixed Mono switch -Channels 3 & 4; same as above.

INSTALLATION STEP 1

COHERENT STEREO™ / MIXED-MONO / BRIDGED MONO

The REFERENCE Class A PICASSO amplifier has the ability to operate in any one of the

following modes:

Coherent Stereo™ with identical left and right stereo channels for maximum fidelity. Best

choice for satellite speakers. Use this mode unless Mixed-Mono is necessary.

Mixed-Mono in order to drive stereo and mono simultaneously; works well for center

channels. It can be used anytime you need a summed mono channel. However, it somewhat

sacrifices sonic accuracy as additional circuitry is introduced to one channel. In Mixed-Mono,

the left channel is inverted, see diagram below or on the bottom of the amplifier.

Bridged Mono for dedicated single channel operation; ideal for driving the PICASSO in 3 or 2

channel mode. It is also used when larger amounts of power are necessary for single

speakers. In bridged mono, only the right channel input is active.

In bridged mono, only the right channel input is active.

NOTE: If you intend to drive the REFERENCE Class A

PICASSO amp in Mono but have stereo outputs from your

crossover or source unit, you can put the switch in Mixed-

INSTALLATION STEP 2

BALANCED / UNBALANCED INPUT

The REFERENCE Class A PICASSO amplifier has the ability to accept either standard

Unbalanced RCA signal inputs, or Balanced "Pro Audio" inputs with the use of the

Soundstream BLT Balanced Line Transmitter or some other balanced line audio source.

Before installing your system, you should decide upon which signal type you wish to run.

The REFERENCE Class A PICASSO's signal inputs accept two ranges of input signal levels:

0.2 -2.0 Vrms, or 0.5 -5.0 Vrms for both Balanced and Unbalanced inputs. The input range

switch position and level settings are dependent upon the preamplifier / source unit output

signal level. For the best system Signal to Noise Ratio, we recommend that the input level

controls be set as far down as possible (rotated counter-clockwise), while maintaining an

acceptable level of output. Using the "Unbalanced" RCA input

When using the Unbalanced RCA input, the RIGHT channel (channel 2) input signal switch

MUST be in the "UNBAL" position. Also, when first installing the amplifier using this input

configuration, we suggest that the remaining input signal switches be in the "UNBAL" position

as well. If you experience alternator whine or other installation noise with all switches in

the "UNBAL" position, try moving channels 1,3 & 4 input signal switch to the "BAL"

position. This should remove any system noise due to installation.

Using the "Balanced" RCA input

When using one or both Balanced 6-pin DIN inputs, all input switches MUST be in the "BAL"

position. Also, we recommend that when using this input configuration, the "INPUT LEVEL"

switches be in the "0.5 -5V" position, and the gains on the amplifiers be set to

"minimum" (rotated counter-clockwise). The system gains should then be adjusted on the BLT

UNBALANCED INPUT BALANCED INPUT

ADVANTAGES 1. Most preamplifier /

source units have

"UNBAL" RCA outputs.

(Industry standard)

2. No Interface module is

1. Improved Signal to Noise Ratio. (S/N Ratio)

2. Excellent noise cancellation characteristics.

3. Immune to noise radiated in the car audio

environment.

NOTE: The pin configuration

shown in the diagram is the view

looking into the Balanced input

jack on the amplifier.

WIRING

POWER AND GROUND

To ensure maximum output from your REFERENCE Class A PICASSO amplifier, use high quality, low-loss power

and ground cables. The PICASSO amplifier will accept up to 4 gauge power and ground cables. Determine from the

chart below the minimum gauge power and ground wire for your application.

INSTALLATION STEP 3

up to 10’ up to 20’

PICASSOPICASSO Soundstream Power40 or Power80

(4 or 8 ga.) Soundstream Power40

(4 ga.)

CIRCUIT BREAKERS/FUSES

INTERNAL

The PICASSO amplifier is fused with a 30 Amp automotive-type fuse. Never replace the fuses with a higher value

than what is supplied. This may result in amplifier damage and will void the warranty! In the event of

blown power supply fuses, the “Fault” indicator on the top panel will light. The fuse is accessible on the front of

the amplifier.

EXTERNAL

Like all audio components, the PICASSO amplifier must be fused near the battery. A fuse or circuit breaker must be

located within 18” of the battery. This will prevent a fire in the event of a shorted cable. A 40 Amp fuse is

recommended.

REMOTE TURN-ON

Connect the “Remote” to the turn-on lead from the source unit. When +12 volts is received, the amplifier will turn

on.

SIGNAL CABLE

Use a high-quality cable that will be easy to install and has minimal signal loss to guarantee optimum

performance. Soundstream’s DL1 and SL1 are ideal.

SPEAKER CABLE

The REFERENCE Class A PICASSO amplifier will accept up to 8 gauge speaker cable. Use a high quality, flexible,

WIRING DIAGRAM

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