Impact Acoustics XT 3.5KW, XT 9.0KW, XT 5.0KW Owner's Manual
X TREME POWER
CLASS D AMPLIFIER
AMPLIFIER
Owners Manual
XT 3.5KW, XT 5.0KW, XT 9.0KW
AMPLIFIERS
Thank you and Congratulations
Our amplifiers are the result of extensive engineering, testing, and bullet proof construction.
They feature the latest in D Class microprocessor technology. Their versatility enables
compatibility with optional signal and audio processors. These high quality MOSFET
amplifiers may be configured to allow maximum flexibility in designing different types of
speaker systems.
D CLASS X-TREME AMPLIFIERS
Unlike most Full Range amplifiers, these models are designed strictly for low frequencies
and are intended only to power subwoofers. It is important that you closely follow the
wiring instructions contained in this Owners Manual so that you get the most from your
X-Treme D Class mobile amplifier.
∆ CAUTION ∆
High powered audio systems in a vehicle are capable of generating higher then “Live
Concert” levels of sound pressure. Continued exposure to excessively high volume
sound levels will cause hearing loss or damage. Also, operation of a motor vehicle while
listening to audio equipment at high volume levels may impair your ability to hear external
sounds such as horns, warning signals, or emergency vehicles—thus creating a potential
traffic hazard. In the interest of safety, We highly recommend listening at lower volume
levels when driving.
TECHNICAL FEATURES
Mono Block Amplifier for Subwoofer
Latest Technology D Class Operation
MOSFET Power Supplies for high power output and best stability into low impedance loads
Internally Fan Cooled
Soft Delay Remote Turn On/Off System for eliminating pop noises
Built-in Fully Adjustable Electronic Crossover Network with Bass EQ
Self Diagnostic Multi Protection Circuit with LED Indicator for; Impedance Over-load, Speaker
Short Circuit, Thermal Overheating, and DC Output.
Real 1-ohm Stable Operation with Output Power Increasing
Heavy-duty Brass CNC Machined Terminal Blocks
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Bass EQ Control
Available Daisy Chain ( Set-to-Set Bridgeable at 2 ohm)
INSTALLATION EXPERIENCE
Installation of X-Treme mobile amplifiers requires detailed knowledge of electronics wiring and
proper speaker impedance. We strongly recommend installation by an authorized X-Treme dealer.
This Owners Manual only provides general installation and operation instructions. If you have any
reservations about your installation skills, please contact your local dealer for assistance.
PREPARING FOR INSTALLATION
NOTE: The tools listed below may be required for basic installation
An electric drill with bits
Philips head and standard screwdrivers
Wire strippers
Crimping tool
VOM (electronic volt ohm meter)
Heat shrink tubing and gun
Soldering iron
INSTALLATION PRECAUTIONS
NOTE: Proceed only if you are qualified installer otherwise, let your dealer do it. Always
wear protective eyewear when using tools.
Turn off all stereo and other electrical devices before you begin.
Disconnect the negative (-) lead from your vehicles battery.
Locate all fuel lines, brake lines, oil lines, and electrical cables when planning the install.
Make sure there is at least 2-inches (5 cm) around the air vents on the amplifier.
When connecting ground points, make sure all paint is carefully scrapped away from the
auto body and contact is make with bare metal.
Use a utility knife to trim away fabric from hole locations before drilling or cutting.
When running power cables through sheet metal, be sure to use grommets to properly
insulate the metal edges from the wire insulation.
If possible, use tubing through grommets.
*** WARNING ***
z Upside down mounting will compromise heat dissipation through the heat sink and
could engage the thermal protection circuit.
z Try to avoid mounting the amplifier on a subwoofer enclosure, as extended exposure to
vibration may cause malfunction of the amplifier.
z Don’t mount the amplifier so that the wire connections are unprotected or are subject to
pinching or damage from nearby objects.
z The DC power wire must be fused at the battery positive (+) terminal connection. Before
making or breaking power connections at the amplifier power terminals, disconnect the
DC power wire at the battery end.
z The power supply of the car audio system must be disconnected until the entire wiring
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and installation is completed.
CONTROL PANEL LAYOUT
Fig.1 Panel Layout (XT 3.5KW, XT 5.0KW)
Fig.1 Panel Layout (XT 9.0KW)
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1. IN/OUT (RCA) Jack
For strapping two of the same model X-Treme D Class amps together. Connect the input of the
MASTER to a suitable source via a shielded RCA interconnect cable and connect the MASTER
OUTPUT RCA jack to the corresponding RCA jack on the SLAVE amplifier. Then select the
MASTER/SLAVE switch properly.
2. MASTER/SLAVE Switch
Two like amplifiers can be connected together and bridged into a single 2-ohm (min) load. The level
and frequency controls on the SLAVE amp will be disabled. Only the amplifier you select as the
MASTER will control these functions.
3. PHASE Control
This variable control can be used to correct any “phase” or “time delay” effect in the system by
bringing the low frequency from the rear of the vehicle to the front.
4. GAIN Control
This control is used to match the input sensitivity of the amplifier to the particular source unit that
you are using.
5. BASS EQ Control
This equalization circuit is used to enhance the low frequency response of the vehicle’s interior.
With up to 18dB of boost centered at 45 Hz, the BASS EQ can be adjusted to meet your own
personal taste.
6. BASS REMOTE Jack
This is the connector port for the Remote Bass Control. When using this control set the BASS EQ
control (#5) to the maximum 18 dB position. Now the amplifiers low frequency equalization circuit
can be adjusted from the driver’s seat.
7. LPF (Low Pass Filter) Control
This control is continuously adjustable from 50 Hz through 400 Hz at 24 dB per octave.
8. SUB SONIC Control
This filter allows high pass of frequency and is adjustable from 20 Hz through 50 Hz to provide an
extra level of speaker protection.
9. POWER Indicator
The clear L.E.D. lights BLUE when the power is on.
10. PROTECTION Indicator
This RED L.E.D. turns on when the built-in protection circuitry is activated. This indicates a problem
with the system in relation to the amplifier.
11. LINE IN (RCA) Jacks
These RCA style input jacks are for use with source units that have RCA line level outputs. A
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source unit with a minimum output of 200mV is required for proper operation. However, this input
will accept levels up to 6Vrms.
12. LINE OUT (RCA) Jacks
RCA style output jacks allow for a signal to be sent to other amplifiers in a daisy-chain configuration.
Only one Remote Bass Control can be used when multiple bass amplifiers are connected.
13. +BATT (Power Input Connection)
This terminal is the main power input for the amplifier and must be connected directly to the positive
(+) terminal of the car battery.
14. GND (Ground Input Connection)
A good quality ground is required for your X-Treme D Class amplifier to operate at peak
performance. A short length of cable the same gauge as your power cable should be used to
attach the ground terminal directly to the chassis of the vehicle. cable.
15. REMOTE (Remote Input Connection)
All Xtreme amplifiers can be turned on by applying 12 Volts to this terminal. This can be found on
the rear of the source unit in the form of an electric antenna output, or a remote output. If this is
not available you can wire to the ACC position on the key. A 1 mm2 wire is sufficient to run the
REMOTE.
16. SPEAKER Terminals
As shown in the wiring diagrams, be sure to observe speaker polarity through the system and
speaker impedance. This specially tooled terminal is designed to accommodate up to 8 gauge
speaker wire.
CAUTION :
Do Not Bridge the speaker outputs on these D Class models, this is already a Mono output!
WIRING AND CONNECTIONS
*** WARNING ***
Disconnect the negative (-) battery terminal before you start any wiring work! The power
supply of your car audio system must be disconnected until the entire wiring installation
is completed.
Your X-Treme D Class amp will draw large levels of current, so use the largest gauge
power/ground cable as possible. Using too small of power cable can result in unnecessary overheating of the amplifier, distortion at high volume levels and might even cause the thermal
protection circuitry to shut-off the amplifier.
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