Power bass XTA 1000D User manual

XTREME SERIES CLASS D AMPLIFIER
Owners Manual
Please read through this manual to familiarize yourself with your new amplifier. Should your PowerBass
Xtreme mobile amplifier ever require service, you will need to have the original dated receipt.
XTA 1000D
XTA 1500D
XTA 2250D

Thank you and Congratulations
Thank you for your decision to purchase a PowerBass Xtreme mobile amplifier! Our PowerBass Xtreme am-
plifiers 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 type of speaker systems.
D CLASS BASS AMPLIFIERS
All PowerBass XTA series “D” models are single channel dedicated subwoofer amplifiers. Unlike most Full
Range amplifiers, these models are designed strictly for low frequencies and are intended only to power sub-
woofers. It is important that you closely follow the wiring instructions contained in this Owners Manual so that
you get the most from your PowerBass Xtreme 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 exces-
sively 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, PowerBass USA highly recommends listening at lower volume levels when driving.
AMPLIFIERS
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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
• Soft Delay Remote Turn On/Off System for eliminating pop noise
• 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
• Variable Gain Control
• Dual Link Capability-Strapping (Set-to-Set Bridgeable at 2 ohm)
• Blue Power-on Edge-lit PowerBass Logo
• Wired Remote Gain Control
INSTALLATION EXPERIENCE
Installation of PowerBass mobile amplifiers requires detailed knowledge of electronics wiring and proper
speaker impedance. We strongly recommend installation by an authorized PowerBass Xtreme dealer. This
Owners Manual only provides general installation and operation instructions. If you have any reservations
about your installation skills, please contact your local PowerBass 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 heat gun
• Soldering iron
INSTALLATION PRECAUTIONS
NOTE: Proceed only if you are a qualified installer otherwise, let your dealer do it. Always wear protec-
tive 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.

Due to the high power output of the PowerBass Xtreme D Class amplifiers, considerable heat may be produced
when the unit is in operation. For this reason the amplifier should be mounted in a location which will allow air
to circulate freely. A clearance of at least 2-inches (5 cm) to all sides of the amplifier is necessary not only for
proper cooling, but also for gaining access to the inputs and other variable controls. Be sure that the power
and signal cable connections can enter and leave the amplifier in a straight line to avoid the risk of kinked
wires causing a malfunction.
MOUNTING LOCATION
Your PowerBass Xtreme D Class amplifier comes with mounting feet that may need to be attached to the am-
plifier prior to installation. Once the feet are in place, use the amplifier as a template and mark the four screw
locations. Set the amplifier aside before drilling. Use caution to make sure there are no objects behind the
installation surface that may become damaged during drilling. Remember your car has many hidden electrical
wires and various gas, vacuum and brake lines.
Fig.1 Mounting Amplifier
MOUNTING THE AMPLIFIER
• When connecting ground points, make sure all paint is carefully scraped 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.
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*** WARNING ***
• Do not install in a place where it could injure the driver or passengers if the vehicle
stops suddenly.
• Upside down mounting will compromise heat dissipation through the heatsink and
could engage the thermal protection circuit causing the amplifier to shut down.
• Try to avoid mounting the amplifier on a subwoofer enclosure, as extended exposure
to vibration may cause the amplifier to malfunction.
• Don’t mount the amplifier so that the wire connections are unprotected or are sub-
ject to pinching or damage from nearby objects.
• The DC power wire must be fused a maximum of 12” from the battery positive (+)
terminal. Before making or breaking power connections at the amplifier power ter-
minals, disconnect the DC power wire at the battery end.
• The battery supply of the car audio system must be disconnected until the entire
wiring and installation is completed.
The amplifier should be protected from exposure to moisture and direct sunlight. The best places to mount
your amplifier are: The floor of the trunk, under the driver’s seat, or on the back of the rear seat. For alternate
installation locations, please consult your dealer.

CONTROL PANEL LAYOUT
1. LINE OUT (RCA) JACKS
RCA style output jacks allow for unfiltered signal to be sent to other amplifiers or processors. Only one Remote
Gain Control can be used when multiple bass amplifiers are connected.
2. LINE IN (RCA) JACKS
These RCA style input jacks are for use with source units that have RCA line level outputs. A source unit with a
minimum of 200mV is required for proper operation. However, this input will accept levels up to 6.5V.
3. GAIN Control
This control is used to match the input sensitivity of the amplifier to the particular source unit that you are
using.
4. SUB SONIC Control
This filter allows the high pass of frequencies, and is adjustable from 15Hz through 50Hz to provide and extra
level of speaker protection.
5. BASS EQ Control
This equalization circuit is used to enhance the low frequency reaponse of the vehicle’s interior. With up to
18dB of boost centered at 45Hz, the BASS EQ can be adjusted to meet your personal taste.
Fig.2 Panel Layout
1
17
12
2345
67
9
8
13 14
15 16
10 11
REMOTE
LINE OUT LINE IN
L
R
L
R
IN
OUT
MIN MAX
GAIN BASS EQ
0dB 18dB
SUBSONIC
15HZ 50HZ 50Hz 250Hz
MASTER SLAVE
LPF
0˚ 180˚
PHASE
SPEAKER OUTPUT
DO NOT BRIDGE POWER
FUSE GNDREMBATT+
POWER
STATUS
1 2
XTA1500D
30A 30A 30A 30A
7

6. LPF (Low Pass Filter) Control
This control is continuously adjustable and varies the crossover point from 50Hz to 250Hz at 24dB per octave.
7. PHASE Control
This variable control can be used to correct “phase” or “time delay” effect in the system by bringing the low
frequency from the rear to the front of the vehicle.
8. REMOTE GAIN Port
This is the connector port for the Remote Gain Control. Now the amplifiers output circuit can be adjusted
from the driver’s seat. NOTE: The Remote Gain Control will “max out” at the highest level that the GAIN
Control is set to.
9. MASTER/SLAVE Switch
Two like amplifiers can be connected together and bridged into a single 2 ohm (min) load. The level and fre-
quency controls on the SLAVE amplifier will be disabled. Only the amplifier you select as MASTER will control
these functions. Dual Link Power Doubling Circuit increases the output power as follows:
XTA 1000D x 2 = 2,000 watts RMS (2 ohms min)
XTA 1500D x 2 = 3,000 watts RMS (2 ohms min)
XTA 2250D x 2 = 4,500 watts RMS (2 ohms min)
10. SLAVE IN Jack
When strapping two like amplifiers together use this jack to receive signal from the MASTER amplifier. When
this is connected all controls will revert to the MASTER amplifier.
11. SLAVE OUT Jack
When strapping two like amplifiers together use this jack to send signal to the SLAVE amplifier.
12. SPEAKER Output Terminals
As shown in the wiring diagrams, be sure to observe speaker polarity through the system and speaker imped-
ance. This specially tooled terminal is designed to accommodate up to 10 gauge speaker wire.
CAUTION: Do Not Bridge the speaker outputs on these D Class models, this is already a Mono output!

13. FUSE
For convenience, some Powerbass Xtreme amplifiers utilize common automotive ATC type fuses. For contin-
ued protection, in the event that a fuse blows, replace the fuse only with the same fuse value (see specifica-
tions page).
XTA 1000D 30A x 3
XTA 1500D 30A x 4
FUSE-IMPORTANT
The XTA 2250D does NOT come with any internal fusing! Due to the current demands a typical chassis
mounted fuse is not practical. We recommend that you install the correct size fuse/holder combination to the
main power cable within 12-inches of the battery. This will protect your vehicle from fire damage due to a
short circuit to the chassis or vehicle body.
For each XTA 2250D amplifier installed, use 150A ANL type fuse (not included).
14. BATT+ (Power Input Terminal)
This terminal is the main power input for the amplifier and must be connected directly to the positive (+)
terminal of the car battery. This terminal accepts up to 1/0 gauge wire. (see Power Cable Selection Chart for
recommended wire gauge for each model).
15. REM (Remote Input Terminal)
All Powerbass Xtreme amplifiers can be turned on by applying 12 volts to this terminal. This can be found
a the rear of the source unit (usually the blue with white stripe wire). If there is not a remote turn on lead
the power antenna lead (usually blue) can be used in its place. If neither of these are available you can wire
this to the ACC (accessory) position of the key. This is a signal that is present when the key is on while not
starting. A 16-18 gauge wire is sufficient to run the REM.
16. GND (Ground Input Terminal)
A good quality ground is required of your Powerbass Xtreme D Class amplifier to operate at peak perfor-
mance. 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. (If a good ground cannot be found the ground connection
must be run directly to the negative (-) terminal of the battery). Capable of handling up to 110 gauge wire.
17. POWER/STATUS Indicator Light
This clear LED lights GREEN for power and normal operation, and lights RED when there is a problem. This
LED will light RED when the built in protection circuitry is activated. This indicates there is a problem with
the system in relation to the amplifier (see Troubleshooting Tips pg. 24).
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*** WARNING ***
Disconnect the negative (-) battery terminal before you start any wiring work! The battery of your
car audio system must be disconnected until the entire wiring installation is completed.
Your PowerBass Xtreme Class D amp will draw large levels of current, so use the largest gauge power/
ground cable possible. Do not “starve” your amplifier by using small power cable. Using under sized power
cable can result in unnecessary over-heating of the amplifier, distortion at high volume levels and may even
cause the thermal protection circuitry to shut off the amplifier. Remember, bigger wire is better!
• Use rubber grommets when running cables through any metal or sharp plastic, to prevent accidental
shorting or shearing. Make sure the cables do not interfere with normal operation of the vehicle.
• The audio signal cables (RCA interconnects) should be kept far away from any potential sources of
electrical interference such as electronic vehicle management systems (relays, engine computers etc.)
wiring harnesses, fuel pumps etc.
WIRING AND CONNECTIONS
Power Input Connections
Fig.3 Power Input Connection
This amplifier is designed to work within a 10 to 16.5 volt DC range. Before any wires are connected, the
vehicles electrical system should be checked for correct supply voltage with the help of a voltmeter.
FUSE HOLDER
Battery Within 12”
of Battery
Remote Turn ON
To Power Antenna
Chassis
Ground
(–)
SPEAKER OUTPUT
DO NOT BRIDGE POWER
FUSE GNDREMBATT+
POWER
STATUS
1 2
XTA1500D
30A 30A 30A 30A