HUMAN REIGN
UNLEASHED
HRU. 2
HRU. 4
Owner’s Manual
and
Installation Guide
Congratulations!
You now own a Soundstream Human Reign Unleashed amplifier, the
product of an uncompromising design and engineering philosophy. Your
Soundstream Human Reign Unleashed 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 receipt for future reference.
Soundstream amplifiers are the result of American innovation and 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 #
Dealer's Name
Date of Purchase
Installation Shop
Installation Date
C A U T I O N !
Prolonged listening at extremely high levels may result in hearing loss.
Even though your new Soundstream Human Reign Unleashed
sounds
prevent hearing damage.
better than anything you've ever heard, exercise caution to
2
amplifier
Table of Contents
Design Features
Amplifier Diagram
Hawkins Bass Control™ Theory and Use
Installation: Wiring
Installation: Mounting
Installation: Level Setting
Protection Circuitry and Troubleshooting
Service and Specifications
p 4 -5
p 6 - 9
p 10 -11
p 12-13
p 14
p 15
p 16
p 17
3
DESIGN FEATURES
RUBI™(Rapid-Use Branched Impulse) This new proprietary power supply
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 to reproduce low frequencies. Also, greater reserve gate power
is stored for low voltage conditions that occur during extreme conditions.
STACT™(STabilized Apex Current Topology) 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 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 preamplifier circuitry is run completely in-phase, no even harmonic distortion
phase reversal occurs.
Trident™ 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 a significant voltage
(>5 Volts) fluctuation occurs between electrical (turn-on lead) and battery
3. Thermal Protection: Puts the amplifier into thermal rollback or shuts the amplifier
down in extreme thermal conditions.
ground.
Hawkins Bass Control - Fully adjustable subwoofer equalization circuit providing
frequency and boost (“Q”) adjustment for optimum subwoofer performance. A
frequency tracking subsonic filter protects woofers from potentially harmful low
frequency information and maximizes output in a usable range.
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Harmonic Bass Alignment™ The 2nd and 3rd order harmonic peaks are critically
aligned to fundamental peaks at low frequencies. This produces tighter, more
accurate bass reproduction.
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.
Dynamically Optimized power Grid™ Power grid is evenly distributed between
primary and secondary power supplies, providing greater dynamics and improved
RF filtering.
Chassisink™ All transistors are ideally located and sandwiched between the
circuit board and the heatsink to provide cool efficient amplifier operation.
Differentially Balanced RCA Input eliminates ground loop related noise in the
audio.
Flexible Input Level Control allow 300mV to 5V input sensitivity.
Continuously Variable Crossover Network : 12dB/octave for the highpass
section and 24dB/octave for the lowpass section.
5
- HRU. 2 -
Front View
Top View
6
KEY TO CALLOUTS
1. +12V - Connected to a fuse or circuit breaker, then to the battery’s positive terminal.
2. GND - Main ground connection. Bolt to a clean chassis point in the vehicle.
3. REMOTE - Remote turn - on input from the head unit. Accepts +12V.
4. Speaker connection Terminal - Speaker connections for satellite CH1 & 2.
5. Hawkins Bass Control “Boost” Adjustment -
when the
6. Subsonic/Hawkins Bass Control Adjustment -
Hawkins
7. Low Pass Filter Control Adjustment - Frequency adjustment control for the
Low Pass Filter
8. High Pass Filter Control Adjustment -
High Pass Filter
9. Input Levels - Input level control variable from 300mV to 5V.
10. RCA Inputs - 1 & 2 channel RCA inputs.
11. BALANCED Signal Input Connector -
connector
12. Line Out - Line level RCA output to drive an external amplifier.
13. Power LED - Indicates amplifier power.
14. Phase Switch - Adjusts the speaker phase to either 0 or 180 degrees.
15. Subsonic/Hawkins Bass Control Switch - Selectable subwoofer enhancement circuit.
Select “SUBS ONIC” to engage the Subsonic filter with no boost. Use the knob indicated
by callout #6 to set the frequency: 13- 30Hz. Select “Hawkins Bass Control” to engage the
Subsonic filter with available boost. Use the knob indicated by callout #6 to set the
frequency
16. ST/MO(2)/LP Switch -
(Channel
2CH). “ST ” for normal stereo operation.
17. High Pass X-OVER Switch -
or “OUT” for use with external crossover.
18. Frequency Range Selection switch - Switching to “LO” selects the 50-500Hz range.
Switching to “HI” selects the 500-5kHz range.
19. Line Output Switch -
Select “1-2 TRACKING LP”
Select “LP SUM 1-2” for a summed signal channels 1-2 (more bass output signal).
20. Channel Balanced / Unbalanced Input Selector Switch - Selec
the 6-pin Balanced signal input. Select “UNBALANCED” to use the RCA signal inputs.
21. Input Overload Indicators -
Hawkins Bass Control circuit is engaged.
Bass Control filter or the Subsonic filter.
, 40 - 160Hz.
, 50 - 500Hz or 500 - 5kHz.
for use with the Soundstream BLT Balanced Line Transmitter.
: 30Hz to 70Hz.
“MONO” for bridge mono operation with a single input signal
2 only). “SUM” for bridged mono operation summing two input signals (1CH and
(Channels 1 & 2) Select “IN” for use with the internal crossover
Select “1-2 FULL” for full range signal outputs.
for a lowpass signal at the frequency for highpass at #8.
Indicates the signal input level or input gain level is too high.
Varies from 0 to + 9dB of boost
Frequency adjustment control for the
Frequency adjustment control for the
Channels 1 & 2 ; 6-pin Balanced signal input
t “BALANCED” to use
7
- HRU. 4 -
Front View
Top View
8
KEY TO CALLOUTS
1. +12V - Connected to a fuse or circuit breaker, then to the battery’s positive terminal.
2. GND - Main ground connection. Bolt to a clean chassis point in the vehicle.
3. REMOTE - Remote turn - on input from the head unit. Accepts +12V.
4. Speaker connection Terminal - Speaker connections for satellite CH1 & 2.
5. Speaker connection Terminal - Speaker connections for satellite CH3 & 4.
6. Hawkins Bass Control “Boost” Adjustment - Varies from 0 to + 9dB of boost
when the Hawkins Bass Control circuit is engaged.
7. Subsonic/Hawkins Bass Control Adjustment - Frequency adjustment control for the
Hawkins Bass Control filter or the Subsonic filter.
8. Low Pass Filter Control Adjustment - Frequency adjustment control for the
Low Pass Filter, 40 - 160Hz.
9. High Pass Filter Control Adjustment - Frequency adjustment control for the
High Pass Filter, 50 - 500Hz or 500 - 5kHz for CH1 & 2.
10. High Pass Filter Control Adjustment - Frequency adjustment control for the
High Pass Filter, 50 - 500Hz for CH3 & 4.
11. Input Levels - Input level control variable from 300mV to 5V.
12. RCA Inputs - 1 & 2 channel RCA inputs.
13. BALANCED Signal Input Connector - Channels 1 & 2 ; 6-pin Balanced signal input
connector for use with the Soundstream BLT Balanced Line Transmitter.
14. RCA Inputs - 3 & 4 channel RCA inputs.
15. BALANCED Signal Input Connector - Channels 3 & 4 ; 6-pin Balanced signal input
connector for use with the Soundstream BLT Balanced Line Transmitter.
16. Line Out - Line level RCA output to drive an external amplifier.
17. Power LED - Indicates amplifier power.
18.Phase Switch - Adjusts the speaker phase to either 0 or 180 degrees.
19. ST/MO(2)/LP Switch - “MONO” for bridge mono operation with a single input signal
(Channel 2 only). “SUM” for bridged mono operation summing two input signals (1CH and
2CH). "ST" for normal stereo operation.
20. ST/MO(3)/LP Switch - “MONO” for bridge mono operation with a single input signal
(Channel 4 only). “SUM” for bridged mono operation summing two input signals (3CH and
4CH). "ST" for normal stereo operation.
21. Subsonic/Hawkins Bass Control Switch - Selectable subwoofer enhancement circuit.
Select “SUBSONIC” to engage the Subsonic filter with no boost. Use the knob indicated
by callout #7 to set the frequency: 13- 30Hz. Select “Hawkins Bass Control” to engage the
Subsonic filter with available boost. Use the knob indicated by callout #7 to set the
frequency: 30Hz to 70Hz. In Hawkins Bass Control Mode, there is a tracking Subsonic
filter to protect woofers.
22. High Pass X-OVER Switch - (Channels 1 & 2) Select “IN” for use with the internal crossover
or “OUT” for use with external crossover.
23. Frequency Range Selection Switch - Switching to “LO” selects the 50 - 500Hz range.
Switching to “HI” selects the 500 - 5kHz range.
24. High Pass X-OVER Switch - (Channels 3 & 4) Select “IN” for use with the internal crossover
or “OUT” for use with external crossover.
25. CH3&4 Fill De-emphasis Switch - (Channels 3 & 4) Select “IN” to activate 6dB/Octave
filter @ 8kHz.
26. Channel 3&4 Input Mode - “FULL 3-4” requires 4 signal inputs. “FULL 1-2” uses the same
signal from 1-2 for 3-4. “1-2 TRACKING LP” sends a lowpass signal to 3-4 derived from the
highpass sent to 1-2 via #9.
27. Line Output Switch - Select “FULL 1-2” for full range signal output.
Select “1-2 TRACKING LP” for a lowpass signal at the frequency for highpass at #8.
Select “3-4 LP Sum” for a summed signal of channels 3-4 (mono bass output signal).
28. Channel Balanced / Unbalanced Input Selector Switch - Select “BALANCED” to use the
6-pin Balanced signal input. Select “UNBALANCED” to use the RCA signal inputs.
29. Input Overload Indicators - Indicates the signal input level or input gain level is too high.
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Hawkins Bass Control - Theory and Use
FIG. 4 VARIABLE BOOST
Hawkins Bass Control ( parametric) is a unique subwoofer
control circuit included with the Soundstream
Unleashed amplifiers. It is capable of removing
in program material while boosting subwoofer frequencies.
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 adjusts the
starting point of the subsonic filter. The
high pass filter has two frequency ranges.
When the bass control switch is set to
“SUBSONIC”, the high pass filter frequency
can be adjusted from 13 Hz up to a maximum
of 30 Hz. In this setting, no boost “Q” control
is available. This control is useful for setting
the lowest 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 adjusted from 30 Hz
to a maximum of 70 Hz. In this setting, there
is an available boost control of 0 to +9dB.
Human Reign
subsonic energy
FIG. 2 VARIABLE “Q”
FIG. 3 VARIABLE HIGH PASS
The Boost control adjusts the amount of level
applied at the set frequency.
This is adjustable from flat (0dB) to +9dB. (See
figure 2)
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
much as 3dB.(see figure 4)
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Application
Subwoofers in general have excellent
power handling characteri stics over their
ope rationa l bandwidth. T his bandwidth is
determined by many factors, including driver
design, and enclosure type. It is possible 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 effectiveness of
the Hawkins Bass Control on woofer excursion in a vented enclosure. The woofer
travels 7.5 mm at 10 Hz. W ith 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.
FIG. 5 LIMITED EXCURSION
Adjustment
An easy method of optimizing your existing subwoofer enclosure with Hawkins’
“Hz” control is as follows:
1. Adjust frequency and boost control to full COUNTER - CLOCKWISE position.
2. Set the bass control switch to “HAWKINS BASS CONTROL”.
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.
With Soundstream’s Hawkins Bass Control, the boost and frequency control can
provide virtually any combination of boost and
cut to suit your designs.
So, Hawkins Bass Control can provide the
“tailoring” needed for any type of “assisted”
design and any woofer in any type o f
installation.
FIG. 6 VARIOUS SETTINGS
Phase Switch
In many car audio systems placement of the subwoofers can cause them to be
out of phase with the rest of the system. This may cause poor subwoofer
performance due to varying arrival times. To eliminate this the Human Reign
Unreashed
music and experimenting with the subwoofer phasing better sound quality and
bass imaging may be obtained.
incorporates a 0 to 180
phase switch. By playing low frequency
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WIRING
POWER AND GROUND
To ensure maximum output from your Human Reign Unleashed amplifier,
use high quality, low-loss power and ground cables and connections. The
Human Reign Unleashed amplifiers will accept up to 2 gauge power and
ground cables. Determine from the chart below the minimum gauge power
and ground wire for your application.
HRU. 2
HRU. 4
less than 10´
2 or 4 gauge 2 gauge only
2 or 4 gauge
more than 10´
2 gauge only
CIRCUIT BREAKERS AND FUSES
EXTERNAL
Like all audio components, the Human Reign Unleashed 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. See the
chart below to determine the correct fuse value.
INTERNAL
The Human Reign Unleashed amplifiers need to be fused with an automotive-type
fuse or circuit breaker. In the event of a blown power supply fuse(s), replace with
replace with the correct value fuse found in the chart below.
Never replace the fuse with a higher value than what is supplied. This may
result in amplifier damage and will void the warranty!
Human Reign Unleashed Amplifier Fuse Values
HRU. 2
HRU. 4
Battery Fuse / Circuit Breaker
200 amp
140 amp
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REMOTE TURN-ON
Connect the “Remote” line to the turn-on lead from the source unit. When
+12Volts received, the amplifier will turn on. Use 16 guage wire minimum.
SIGNAL CABLE
Use a high quality cable that will be easy to install and has minimal signal loss
to guarantee optimum performance.
SPEAKER CABLE
The Human Reign Unleashed amplifiers will accept up to 8 gauge speaker
cable. Use a high quality, flexible, multi-strand cable for best performance
and longevity.
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INSTALLATION AND MOUNTING
AMPLIFIER LOCATION
The Human Reign Unleashed amplifiers employ highly efficient circuitry
and a custom-engineered heat sink to maintain lower operating temperatures.
Additional cooling may be required if the amplifier is located in a tightly confined
area or when driving especially low impedance loads at extremely high levels.
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.
MOUNTING THE AMPLIFIER
a. Using the amplifier as a template, mark the holes on the mounting surface.
b. Remove the amplifier and drill the holes for the mounting screws.
c. Secure the amplifier to the mounting surface using the supplied hardware.
WIRING
a. Run and connect the audio signal and remote turn-on cables from to the
amplifier from the source unit, equalizer or preamp.
b. Carefully run the positive cable from the amplifier to the fuse or circuit breaker
within 18” of the battery.
c. Connect the fuse or circuit breaker lead to the battery. Leave the circuit
breaker off or the fuse out until everything is bolted down.
d. Secure the ground cable to a solid chassis ground on the vehicle. It is
necessary to sand paint down to raw metal for a good connection.
e. Double check each and every connection!
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
amplifier LED is on and the source unit is playing, you should have sound coming
from the speakers.
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LEVEL SETTING
The input level is adjusted by means of the input level control located on the
control panel of the amplifier. This is a unique dual-stage circuit that adjusts both
level and gain. This topology maintains better S/N Ratio even when using
sources with minimal output.
In the ideal situation, all components in the audio system reach maximum
undistorted output at the same time. If you send a distorted signal to an amplifier,
it is simply going to amplify the distorted input. By setting all components to reach
clipping at the same time, you can maximize the output of your system. For the
Human Reign Unleashed amplifiers, follow these steps for setting the input levels:
1. Turn the amplifier’s input level to minimum position (counter-clockwise).
2. Set the source unit volume to approximately 3/4 of full volume.
3. While playing dynamic source material, slowly increase the amplifier’s input
level until a near maximum undistorted level is heard in the system.
4. If Possible, use a volt meter & measure the A/C voltage out of the RCAs with
a sine wave. Then adjust the input level accordingly for true level matching.
15
TRIDENT PROTECTION CIRCUITRY
Your Human Reign Unleashed amplifier is protected against both overheating
and short circuits by means of main power fuses and the following circuits:
Speaker Output Protection
Ground Fault Differential
Smart Power Supply Thermal Rollback & Thermal Protection Circuit
NOTE: If you experience blown main power supply fuses, it is likely that the
amplifier is seeing a dead short, either in the speaker wire or in the speaker
itself. Rectify the problem before blowing multiple fuses!
DO NOT increase values beyond the original fuse value! Doing so will void
your warranty and may damage your amplifier
TROUBLE SHOOTING
PROBLEM
1. No power or ground at the
No Sound and power LED is not
lit
No Sound , power LED is lit No signal input
Repeatedly blow amp fuse;
frequent activation of Smart
Power Supply Circuit
Distorted output
amp
2. No remote turn-on signal
3. Blown fuse near the battery
1. Speaker or leads may be
shorted
2. Verify adequate amp
ventilation.
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.
CAUSE
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SERVICE
Your Soundstream Human Reign Unleashed amplifier is protected by a
limited warranty. Please read the enclosed warranty card for details. As with
all Soundstream products, a Return Authorization (available from Soundstream)
is required for service of this amplifier.
SPECIFICATIONS
Satelite Channels
4 Ω Stereo
POWER
HRU. 2
HRU. 4
THD 0.005%
Signal to Noise 105dB
Frequency Response 10Hz to 40kHz
Damping 1800 @ 100Hz, 960 @ 10kHz
Input Sensitivity 300 mV t o 5.0 Volts
Input Impedance 10k Ohms
(8Ω Bridged)
(14.4 Vdc)
500W x 2
(900W x 1)
140W x 4
(240W x 2)
Crossover Specifications
Low Pass: 40Hz - 160Hz at 24dB/Octave
High Pass: 50Hz - 5KHz at 12dB/Octave
2 Ω Stereo
(4Ω Bridged)
(14.4 Vdc)
900W x 2
(1800W x 1)
240W x 4
(480W x 2)
0.5 dB, -3dB @ 71kHz
TOTAL
POWER
1800
960
Hawkins Bass control
SubSonic Filter: No boost, High Pass filter from 13 to 30 Hz.
Hawkins Bass control : 0 to +9 dB Boost and SubSonic filter
variable from 30 to 70 Hz.
Dimensions (W x D x H)
Human Reign unleashed(inch)
Human Reign unleashed(mm)
: 11.125 X 22.0625 X 2.6875
: 282.5mm X 560.4mm X 68.3mm
SOUNDSTREAM TECHNOLOGIES
1550 Maple Avenue., Montebello, CA 90640 U.S.A.
Phone 323-722-3333 fax. 323-722-1122
www.soundstream.com
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