Soundstream Technologies 502 User Manual

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502  
702  
1002  
Power Amplifiers  
Owner’s Manual  
and  
Installation Guide  
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SOUNDSTREAM TECHNOLOGIES  
120 Blue Ravine Road Folsom  
USA  
California 95630  
916.351.0414  
ph 916.351.1288 fax  
rev  
Table of Contents  
You now own the Soundstream  
compromising design and engineering philosophy. Your Soundstream  
amplifier, the product of an un-  
.............................................................  
Design Features  
amplifier will outperform any other amplifier in the world.  
Amplifier Diagram ............................................  
To Maximize the performance of your system, we recommend that you thor-  
oughly acquaint yourself with its  
manual and your sales receipt for future reference.  
and features. Please retain this  
..................................................  
Crossover Adjustments  
Soundstream amplifiers are the result of American innovation and the high-  
est quality control standards. When properly installed, they will provide you  
with many years of listening pleasure. Should your amplifier ever need ser-  
vice or replacement due to theft, please record the following information which  
will help protect your investment.  
Hawkins Bass  
Theory and Use ...................... p 10 11  
...............................  
Installation: Speaker Output Modes  
....................  
Installation: Balanced Unbalanced Inputs  
p 13  
Model and Serial #  
Dealer’s Name  
....................................  
Installation: Wiring and Diagram  
.....................................................  
Installation: Mounting  
Date of Purchase  
Installation Shop  
Installation Date  
.................. p 17  
Installation: Level Setting and Front Spoiler.  
....................... p 18  
Protection Circuitry and Troubleshooting  
...........................................................................  
Service  
.................................................................  
Specifications  
3
2
Output Clipping Indicators indicate clipping on the output stage of  
the amplifier. Monitoring the clipping indicators allows the user to achieve  
maximum Sound Pressure Level without clipping the amplifier.  
This new proprietary power sup-  
ply topology 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 frequen-  
cies. Also, greater reserve gate power is stored for low voltage condi-  
tions that occur during extreme conditions.  
Power grid is evenly distrib-  
Dynamically Optimized Power Grid  
uted between primary and secondary power supplies, providing greater  
dynamics and improved RF filtering.  
Reduces power supply  
stress by 50%. Typical designs degrade the stereo image due to phase  
reversal of even-order harmonic distortion that occurs between the in-  
verted channels. In the STACT design, inversion is done at the power  
amplifier drive stage. Since the fully symmetrical power amplifier pro-  
duces no even-harmonic distortion itself and all preamplifier circuitry is  
run completely in-phase, no even harmonic distortion phase reversal  
occurs.  
automatically matches the amplifier to the load  
being driven allowing greater system flexibility, greater output, higher  
reliability, and high efficiency 1 ohm (stereo) operation.  
Auto High  
All transistors are ideally located and sandwiched be-  
efficient  
to provide coo  
tween the circuit board and the  
fiea operation.  
loop related  
Differentially Balanced RCA Input eliminates grou  
noise in the audio.  
Protection Topology provides three types of protection:  
1. Output protection against short circuits or improper loads.  
2. Ground fault detection: Shuts down the amplifier when  
voltage fluctuation occurs between electrical (turn-on lead)  
and battery ground.  
3. Thermal Protection: Puts the amplifier into thermal rollback or shuts  
the amplifier down in extreme thermal conditions.  
a
significant  
Fully Balanced  
and noise cancellation. The 6-pin DIN plug carries  
tion for Left and Right channels, audio ground, and 15 Vdc to operate  
the Soundstream BLT BLT4 Balanced Line Transmitters.  
DIN Input for professional-quality performance  
signal informa-  
Continuously Variable Crossover Networks: 12  
Hawkins Bass Control Fully adjustable subwoofer equalizaton circuit  
providing frequency and boost (“Q”) adjustment for optimum subwoofer  
performance. A frequency tracking subsonic filter protects woofers from  
variable from 70 to 160 Hz, and 24  
able from 55 to 220 Hz.  
crossovers vari-  
potentially  
low frequency information and maximizes output in  
Flexible Dual Input Level Control allows 300  
to 5 V input sen-  
a usable range.  
sitivity Separate Left and Right level controls allow user to optimize  
system level control.  
The 2nd and 3rd order harmonic peaks  
Harmonic Bass Alignment  
are critically aligned to fundamental peaks at low frequencies. This  
produces tighter, more accurate bass reproduction.  
Symmetrical Discrete Balanced Class A Drive Boards Auto-adjust  
for linear performance while driving low impedance loads.  
Amplifier section powers up 2 to 3 seconds after the  
power supply eliminating turn-oncand off pops. The turn off process is  
reversed: Amplifier section turns off first, followed by the power  
Drive Delay II  
Removable Front Spoiler allows for stealth installation of RCA, Bal-  
anced Line, Speaker and Power wiring.  
4
KEY TO  
Power LED Indicates amplifier power, either in High Power or Auto High  
Current.  
Clip Indicators Indicates the signal output level is too high and the output  
stage of the amplifier is clipping.  
1.  
2.  
8
3.  
Subsonic, Hawkins Bass Control, H.P. Xover Switch Selectable high pass  
Select “SUB SONIC” to engage the Sub Sonic filter  
filter frequency range.  
with no boost. Use the knob indicated by  
Select “Hawkins Bass Control” to engage the Sub Sonic filter  
with available boost. Use the knob indicated by to set the  
frequency: 30 Hz to 70 Hz. Select XOVER” to engage the amplifier’s  
to set the frequency:  
high pass filter for running satellite speakers. Use the knob indicated by  
to set the frequency: 70-I 60 Hz.)  
4.  
Low Pass XOVER Switch Selectable low pass filter for driving subwoofers.  
Note:  
Use the knob indicated by  
to set the low pass frequency.  
Do not have the  
XOVER” and the  
XOVER” engaged at the same  
time.  
“MONO” for bridged mono operation with a single  
MONO/SUM/ST Switch  
input signal (right channel only).  
ming two input signal (left and right).  
5 .  
6.  
‘SUM” for bridged mono operation sum-  
for normal stereo operation,  
Left Channel Balanced/Unbalanced Input Selector  
Select “BALANCED”  
to use the 6 pin Balanced signal input. Select “UNBALANCED” to use the  
RCA signal inputs.  
Right Channel Balanced/Unbalanced Input Selector Select “BALANCED”  
to use the 6 pin Balanced signal input. Select “UNBALANCED” to use the  
RCA signal inputs.  
RCA Inputs Right and Left channel RCA (Unbalanced) inputs.  
Balanced Signal Input Connector 6-Pin Balanced input connector for use  
8.  
9.  
with the Soundstream  
Balanced Line Trasmitter.  
10. Input Levels Independent Left and Right input level controls.  
Il. Hawkins Bass Control “Boost” Adjustment Varies from 0 to  
boost when the Hawkins Bass Control circuit is engaged.  
of  
12. High Pass Filter Control Adjustment Frequency adjustment control for the  
High Pass filter, the Hawkins Bass Control filter, or the Sub Sonic filter.  
Low Pass Filter Control Adjustment Frequency adjustment control for the  
Low Pass filter.  
Line Outputs Line level RCA outputs to drive an external amplifier (Note:  
The outputs are full-range.)  
Speaker Connection Terminal Speaker connections for Ch’s 1 2.  
REMOTE Remote turn-on input from the head unit. Accepts  
GND Main ground connection. Bolt to a clean chassis point in the vehicle.  
Connected to a fuse or circuit breaker, then to the battery’s positive  
terminal  
- 16  
- 17  
13.  
14.  
- 18  
15.  
16.  
17.  
18.  
FUSE Main power supply fuse. Warning: Replace only with the same  
value fuse!  
19.  
Front View  
The  
amplifiers incorporate an on-board staggered  
crossover, with RCA outputs to drive an external amplifier. No  
In many car audio installations, there is a tendency for a  
boom.” Because of their interior dimensions, most cars will  
external electronic crossover is necessary. The high and low pass  
portions of the crossover can be set independently of one another.  
nate or ring at these  
so there is reduced output in this region, the final response is very  
smooth and natural sounding. The high pass is  
frequencies. If we design the system  
To engage the High Pass filter, set the left crossover switch on the  
dently variable from 70 to 160 Hz at 12 dB/Octave, and the low pass  
crossover is independently variable from 55 to 220 Hz at 24  
tave.  
top of the amplifier to  
X-OVER”, and use the frequency adjust-  
ment knob marked “H.P. X-OVER”. To engage the Low Pass filter,  
set the left crossover switch to either “SUB SONIC” or “HAWKINS  
BASS CONTROL” (see pages 1 O-1 1 for more details), and set the  
right crossover switch “L.P. X-OVER” to the “IN” position.  
For initial crossover setup, try setting the low pass filter to approxi-  
mately 60 Hz, and the high pass filter to approximately 100 Hz.  
Change the crossover points to accommodate a good mixture of  
frequency response, power handling, and personal preference.  
Cros  
12  
High Pass  
Crossover  
HP  
Hz  
P
XOVER  
l
30  
13  
l
24  
Low Pass  
Do  
law  
the  
this  
Pass  
engaged the same time.  
the amplifier, the  
nal will be limited.  
of the amplified sig-  
9
Hawkins Bass Control (parametric) is a unique  
subwoofer control circuit included with the  
Application  
8 0  
7 0  
6 0  
5.0  
Subwoofer drivers in general have  
excellent power handling character-  
istics over their operational band-  
width. This bandwidth is determined  
by many factors, including driver de-  
sign, and enclosure type. It is pos-  
sible to overdrive any subwoofer  
driver by sending powerful signals  
outside of its operational bandwidth. These potentially damaging signals  
can be removed by adding a subsonic filter. Figure 5 shows the effective-  
ness of the Hawkins Bass Control on woofer excursion in a vented enclo-  
sure. The woofer travels 7.5 mm at 10 Hz. With Hawkins Bass Control  
properly adjusted, this excursion can be reduced to less than 1 mm. This is  
of great benefit to lowering woofer distortion and increasing output.  
SONIC  
HAWKINS  
BASS  
CONTROL  
Soundstream  
702 and 1002 am-  
plifiers. It is capable of removing subsonic en-  
ergy in program material while boosting  
subwoofer frequencies. The circuit consists of  
two controls. One adjusts the frequency of op-  
eration and the other adjusts the range of boost.  
With both controls adjusted fully counter-clock-  
wise, no boost is applied and the amplifier is flat  
in response down to 20 Hz.  
30  
20  
I O  
0.0  
HAWKINS  
BOOST  
110  
100  
200  
10  
50  
FIG. 5 LIMITED EXCURSION  
FIG. 1 BASS CONTROL  
10  
The frequency control (Hz) adjusts  
the starting point of the subsonic fil-  
5
0
5
-
ter. On the  
and  
- 10  
- 15  
- 20  
- 25  
- 30  
Adjustment  
1002, the high pass filter has two fre-  
quency ranges. When the bass con-  
trol switch is set to “SUB SONIC”,  
the high pass filter frequency can be  
adjusted from 13 Hz up to a maxi-  
mum of 30 Hz. In this setting, no  
boost “Q” control is available. This  
control is useful for setting the low-  
est frequency that your subwoofer  
will see (see figure 1). When the  
bass control switch is set to  
“HAWKINS BASS CONTROL”, the  
high pass filter frequency can be ad-  
justed from 30 Hz to a maximum of  
70 Hz. In this setting, there is an  
available boost control of 0 to  
An easy method of optimizing your existing subwoofer enclosure with  
“Hz” control is as follows.  
50  
100  
200  
1. Adjust frequency and boost control to full CCW position.  
2. Set the bass control switch to “HAWKINS BASS CONTROL”.  
FIG. 2 VARIABLE  
1 0  
5
3. While listening to music with strong bass content at a moderate level,  
slowly adjust frequency control clockwise. Listen for a reduction of bass  
response. Now, rotate frequency control slightly backwards. This serves  
the purpose of removing the “subsonic” bass energy.  
0
-
5
- 10  
- 15  
- 20  
- 25  
- 30  
With Soundstream’s Hawkins Bass  
Control, the boost and frequency con-  
10  
10  
FIG. 3 VARIABLE HIGH PASS  
5
0
5
trol can provide virtually any combina-  
tion of boost and cut to suit your de-  
signs. So, Hawkins Bass Control can  
provide the “tailoring” needed for any  
type of “assisted” design and any  
woofer in any type of installation.  
-
- 10  
- 15  
The Boost control adjusts the amount  
of level applied at the set frequency.  
- 20  
- 25  
- 30  
0
This is adjustable from flat  
(See figure 2)  
to  
-
5
200  
10  
5 0  
100  
- 10  
- 15  
- 20  
-25  
FIG. 6 VARIOUS SETTINGS  
When the Boost is set to 0, Hawkins  
acts as a sub-sonic filter only. (See  
figure 3) The simple act of removing  
potentially harmful low frequencies  
can improve system output by as  
I
I
100  
200 1  
FIG. 4 VARIABLE BOOST  
much as 3  
10  
(see figure 4)  
11  
INSTALLATION STEP 2  
INSTALLATION STEP 1  
The RUBICON502, 702 and 1002 amplifiers have the ability to accept either a  
standard Unbalanced RCA signal input, or a Balanced “Pro Audio” style input  
signals with the use of the Soundstream BLT Balanced Line Transmitter or some  
The RUBICON502, 702 and 1002 amplifiers have the ability to operate in any  
one of the following modes:  
Before installing your system, you should  
other balanced line audio source.  
Stereo  
Mono); Use this mode for either stereo operation (left  
decide upon which signal type you wish to run, There are advantages to both:  
and right channels) or for Mixed Mono operation (stereo left and right channels  
plus bridged mono for a subwoofer).  
BALANCED INPUT  
UNBALANCED INPUT  
Summed Mono: Use this mode to get a bridged mono output while using both  
the left and right inputs and gain controls.  
1. Improved Signal to Noise Ratio  
(S/N Ratio).  
2. Excellent noise cancellation  
characteristics.  
3. Immune to noise radiated in the  
car audio environment.  
1. Most preamplifier source  
units have Unbalanced RCA  
Mono: Use this mode to get a bridged mono output while using only  
the right channel input and gain control (for use with a singular mono input).  
outputs  
Standard).  
ADVANTAGES  
2. No Interface module is  
necessary.  
Please follow the wiring schemes below for the correct operation:  
The  
amplifiers’ signal inputs accept a wide range of input level: from  
to 5.0 Vrms for both Balanced and Unbalanced inputs. For the best  
S/N 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.  
SUMMED MONO  
BRIDGED MONO  
L+  
L+  
R+  
Using the “Unbalanced” RCA Input  
When using the Unbalanced RCA input, the RIGHT channel input signal switch  
MUST be in the “UNBAL” position. Also, when first installing the amplifier using  
this input configuration, we suggest that the left channel input signal switch be in  
the “UNBAL” position as well. If vou experience alternator wine or other instal-  
lation noise with both switches in the “UNBAL” position.  
channel switch to the Position. This should remove any  
system noise due to the installation.  
movina the LEFT  
Using the “Balanced” RCA Input  
When using the Balanced 6-pin DIN audio input, both switches MUST be in the  
“BAL” position. Also, we recommend that when using this input configuration, the  
input level controls be set to the “minimum” position (rotated counter-clockwise).  
The system gain should then be adjusted on the BLT Balanced Line Transmitter,  
other other balanced line audio source. For the pin configuration, see the dia-  
gram below:  
MIXED MONO  
STEREO  
R
+
13  
12  
INSTALLATION STEP 3  
REMOTE TURN-ON  
Connect the “Remote” line to the turn-on lead from the source unit. When  
Volts is received, the amplifier will turn on.  
WIRING  
POWER AND GROUND  
SIGNAL CABLE  
Use a high quality cable that will be easy to install and has minimal signal loss  
guarantee optimum performance.  
To ensure maximum output from your  
amplifier, use high quality, low-  
amplifiers will  
power and ground cables and connections. The  
accept up to 4 gauge power and ground cables. Determine from the chart below  
the minimum gauge power and ground wire for your application.  
SPEAKER CABLE  
Use a high  
amplifiers will accept up to 8 gauge speaker cable.  
The  
quality, flexible, multi-strand cable for best performance and longevity.  
4
4
4
gauge only  
only  
4
4
4
or 8 gauge  
or 8 gauge  
gauge only  
502  
702  
gauge  
gauge only  
RUB/CON  
RUB/CON  
1002  
CIRCUIT BREAKERS AND FUSES  
[Head Unit  
To 2nd  
Amplifier  
EXTERNAL  
To Chassis  
Ground  
Like all audio components, the  
battery. A fuse or circuit breaker must be located within 18” of the  
prevent a fire in the event of a shorted cable.  
correct fuse value.  
amplifiers must be fused near the  
This will  
See the chart below to determine the  
at the  
Battery  
SPEAKERS  
INTERNAL  
The  
Battery  
Terminal  
amplifiers are fused with an automotive-type or Maxi-fuse. In the  
event of a blown power supply fuse(s), replace with the correct value fuse found in  
the chart below. Never replace the fuse with a higher value than what is sup-  
plied. This may result in amplifier damage and will void the warranty1  
RUB/CON Amplifier Fuse Values  
Amplifier Fuse  
Battery Fuse Circuit Breaker  
I
80 amp  
502  
(2) 30 amp automotive  
80
RUB/CON 702  
60 amp Maxi-fuse  
100 amp  
RUB/CON 1002  
80 amp Maxi-fuse  
15  
14  
INSTALLATION STEP 5  
INSTALLATION STEP 4  
LEVEL  
The input levels are adjusted by means of the individual channel input level  
controls located on the front of the amplifier. This is a unique dual-stage circuit  
AMPLIFIER LOCATION  
The  
heat sink, and a unique Chassisink construction to maintain lower operating  
Additional cooling may be required if the amplifier is located in a  
amplifiers employ highly efficient circuitry, a custom-engineered  
This topology maintains better S/N Ratio even  
that adjusts both level and gain.  
when using sources with minimal output.  
temperatures.  
tightly confined area or when driving especially low impedance loads at extremely  
high levels.  
In the ideal situation, all components in the audio system reach maximum  
If you send a distorted signal to an amplifier,  
undistorted output at the same time.  
it is simply going to amplify distorted information. The same holds true if an  
outboard processor or crossover begins to distort before you have maximum  
output from the amplifier. By setting all components to reach clipping at the same  
When mounting the amplifier, it should be securely mounted to either a panel in  
the vehicle or an amp board or rack that is securely mounted to the vehicle. The  
mounting location should be either in the passenger compartment or in the trunk  
of the vehicle, away from moisture, stray or moving objects, and major electrical  
components. To provide adequate ventilation, mount the amplifier so that there  
are at least two inches of freely circulating air above and to the sides of it.  
time, you can maximize the output of your system. For the  
follow these steps for setting the input levels:  
amplifiers,  
1.  
2.  
3.  
Turn the amplifiers’ input levels to minimum position (counter-clockwise)  
Set the source unit volume to approximately of full volume.  
While playing dynamic source material, slowly increase the amplifiers’ input  
level until a near maximum undistorted level is heard in the system.  
MOUNTING THE AMPLIFIER  
a.  
b.  
C.  
Using the amplifier as a template, mark the holes on the mounting surface.  
Remove the amplifier and drill the holes for the mounting screws.  
Secure the amplifier to the mounting surface using the supplied hardware.  
The clipping indicators on the top of the amplifier let you know when the output of  
the amplifier is reaching its maximum level, and has begun to clip.  
WIRING  
Run and connect the audio signal and remote turn-on cables to the ampli-  
fier from the source unit.  
Carefully run the positive cable from the amplifier to a fuse or circuit breaker  
within 18” of the battery.  
Connect the fuse or circuit breaker lead to the battery. Leave the circuit  
breaker off or the fuse out until everything is bolted down.  
Secure the ground cable to a solid chassis ground on the vehicle. It may be  
necessary to sand paint down to raw metal for a good connection.  
Double check each and every connection!  
a.  
b.  
C.  
d.  
FRONT SPOILER  
Once the amplifier is installed and the proper levels set, place the front spoiler in  
position, and secure it on using the supplied hardware.  
e.  
f.  
Re-connect the fuse or circuit breaker.  
POWER UP  
Power up the system, there may be a 2-3 second delay from the time the source  
unit is turned on to the time that the amplifier turns on, which is normal. Once the  
LED is on and the source unit is playing, you should have sound coming  
from the speakers.  
17  
16  
SERVICE  
TRIDENT  
CIRCUITRY  
Your Soundstream  
amplifier is protected by a limited warranty.  
Your  
amplifier is protected against both overheating and short circuits  
Please read the enclosed warranty card for details.  
by means of main power fuses and the following circuits:  
Auto High Current power supply  
Protection  
Maximum  
Rated  
1
Stereo  
2
Stereo  
4
Stereo  
Ground Fault Differential  
(2 Bridged)  
(14.4 Vdc)  
(4 Bridged)  
(14.4 Vdc)  
POWER  
(8 Bridged)  
(12.6 Vdc)  
Smart Power Supply Thermal Rollback a Thermal Protection Circuit  
output  
250w x 2  
250w x 2  
x2  
x 1)  
500 Watts  
700 Watts  
1000 Watts  
502  
If you experience blown main power supply fuses, it is  
x 1)  
x 1)  
that the amplifier is seeing a dead  
the speaker itself. Rectify the problem before blowing  
either in the speaker wire or in  
fuses!  
DO NOT increase values beyond fhe original fuse value! Doing so will  
void your warrant and may damage your amplifer.  
TROUBLESHOOTING  
THD  
Signal to Noise  
Frequency Response  
Stereo Separation  
Damping  
input Sensitivity  
Input Impedance  
PROBLEM  
CAUSE  
20 Hz to 20  
0.5  
1. No power or ground at the amp.  
2. No remote turn-on signal  
No Sound and power LED is not lit  
3. Blown fuse near the battery  
300  
to 5.0 Volts  
Ohms  
1. No signal input  
2. The  
is in the  
switch  
No sound, power LED is lit.  
position. Move it to the  
Crossover Specifications  
Low Pass: 55 Hz 220 Hz at 24  
“OUT” position.  
Repeatedly blow amp fuse;  
frequent activation of Smart Power  
Supply Circuit  
1. Speaker or leads may be shorted  
2. Verify adequate amp ventilation  
High Pass: 70 Hz 160 Hz at 12 dB/Octave  
Hawkins Bass Control  
Be sure both Left and Right input  
signal switches are set to the  
position.  
Not enough input sensitivity while  
using the Balanced Input  
Sub Sonic Filter: No boost, High Pass filter from 13 to 30 Hz.  
Hawkins Bass Control: 0 to  
Boost; Boost and Sub Sonic filter,  
variable from 30 to 70 Hz.  
Make sure that  
the H.P.  
engaged  
the L.P. and  
aren’t  
Very little output, or output is  
muffled.  
Dimensions (W x D x H)  
CON502: 11  
CON702: 13.0” X 9.8” X 2.25”  
CON1002: 15.0” X 9.8” X 2.25”  
X 9.8” X 2.25”  
RUB  
RUB  
RUB  
Output signal level is too high and  
the amplifier output is clipping.  
Reduce the level either at the source  
or at the input level controls.  
Left and Right “Clip” indicators  
lighting  
1. Make sure the Right Input Signal  
Switch is in the  
position.  
2. Try the Left Input Signal switch  
in the “BAL” and “UNBAL” position:  
leave the switch in the quietest  
setting. This will not effect the  
performance of the amplifier.  
Alternator whine while using  
Unbalanced RCA inputs  
19  
18  

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