Precision Power PCX 1250 Owner'S Manual Download Page 7

PCX 1250

PCX 1500

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1.  Cooling Plenums: Maintain a minimum 2” clearance around cooling plenums for proper amplifier
cooling.
2.  HP/LP/FULL Switch: Select the desired crossover setting, HP/LP/FULLfor the speaker output
signal of the front channel. 
3.  Freq. Control: Move this detented control in a clockwise rotation to adjust the front crossover fre-
quency from 30Hz to 4kHz.
4.  Subsonic Filter Freq. Control:  Move this detented control in a clockwise rotation to adjust the
subsonic crossover frequency from 5Hz to 80Hz.
5.  RCAInputs: Connect the RCAcables from the head-unit, video unit, or line driver to these RCA
connectors.
6.  Gain Control: Use this control to match the output level of the source unit to the input of the amplifier.
7.  -12dB: For use with high level inputs (4V up to 12V). Push this switch in to attenuate the input by
12dB.
8.  QBASS™ 0 to +12dB
9.  Output Crossover HP/LP/FULLSwitch:  
Select the desired crossover setting, HP/LP/FULLfor
the output signal of the RCAoutput.
10.  Output Crossover Freq. Control: Move this detented control in a clockwise rotation to adjust
the front crossover frequency from 30Hz to 4kHz.
11.  RCAOutputs: RCAoutputs provide HP/LP/Full; 30-4KHz to another amplifier.
12.  Speaker Output Connections: Plug the Speaker 

Power

Lock™

connector in here.

1.  Cooling Plenums: Maintain a minimum 2” clearance around cooling plenums for proper amplifier
cooling.
2.  Subsonic Filter Freq. Control:  Move this detented control in a clockwise rotation to adjust the
front crossover frequency from 5Hz to 80Hz.
3.  HP/LP/FULL Switch: Select the desired crossover setting, HP/LP/FULL for the speaker output
signal of the front channel.
4.  Freq. Control: Move this detented control in a clockwise rotation to adjust the front crossover fre-
quency from 30Hz to 4kHz.  (See Crossover frequency chart pg. 16) 
5.  RCAInputs: Connect the RCAcables from the head-unit, video unit, or line driver to these RCA
connectors.
6.  QBASS 1 & QBASS 2 Freq.: Use these switches, QBASS 1 & QBASS 2 to program the 

QBASS

PLUS™

circuit frequency.

6. -12dB Input Attenuation: Push this switch 

‘ I N ’

for high voltage input (4V-12V) capability. This button

pushed 

‘ I N ’

must be used for speaker level input on common ground head-units or for high voltage line drivers.

8.  Freq. Control: Move this detented control in a clockwise rotation to adjust the front crossover frequency
from 30Hz to 4kHz.
9.  Output Crossover Control: HP/LP/FULL, Move this detented control in a clockwise rotation to
adjust the front crossover frequency from 30Hz to 4kHz.  (See Crossover frequency chart pg. 16)
10.  Gain Control:  Use this control to match the output level of the source-unit to the input of the amplifier
11.  RCAOutputs: Left and right RCAoutputs provide HP/LP/Full; 
30-4KHz to another amplifier.
12.  Speaker Output Connections: Plug the Speaker 

Power

Lock™

connector in here.

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1.  Thermal Management Intake/Exhaust Plenums
2.  Power / Ground

Power

Lock

: After you have securely connected your power and ground wires,

plug in the Power/Ground

Power

Lock

connector here.

3.  Power indicator: A green light indicates that the amplifier is on.

1.  Forced Air Thermal Management Intake/Exhaust Plenums
2.  QBASS PLUS™: 
level control up to 18dB.
3.  QBASS REMOTE™ plug in: Plug in the data cable from the optional 

QBASS REMOTE™

dash

mount level control here. (This will bypass the amplifier’s on board 

QBASS™

control)

4.  Power / Ground

Power

Lock

: After you have securely connected your power and ground wires,

plug in the Power/Ground

Power

Lock

connector here.

5.  Power indicator: A green light indicates that the amplifier is on.

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Summary of Contents for PCX 1250

Page 1: ...PrecisionPower 9235 South McKemy Street Tempe Arizona 85284 www precisionpower com 8900 4006 PCX 1250 PCX 1500 ...

Page 2: ...r Wire Connectors 3 Yr Warranty installed by an Authorized PrecisionPower Dealer MODEL 4ohm MONO 2ohm MONO PCX 1250 1 X 250 1X 500 ALL POWER RATINGS SHOWN ARE TESTED 12V 20 20kHz Length Height Width PCX 1250 17 00 2 375 10 1 NO SOUND Is the LED lit YES NO Check Power and Remote turn on wire for voltage Make sure Ground wire is secure STILL NO SOUND See your Authorized PrecisionPower Dealer or call...

Page 3: ...nd may damage your speakers if abused On the PCX 1250 amplifier we offer tremendous control of your bass with QBASS On the front end panel of your PCX 1250 you will find the QBASS level control Adjust the level control clockwise for up to 12 dB of boost at a factory preset frequency of 40Hz with a Q factor of 2 18 3 ...

Page 4: ...tion block near your amplifiers to distribute large gauge power cable to multiple amplifiers NOTE TOOLS ARE NOT SUPPLIED Small flat blade screwdriver Phillips screwdriver 2 or medium sized Wire cutters Wire strippers 4 6 round head screws and 1 8 sheet metal screw or nut bolt flat washer star washer see detail 2 Ring connectors large enough to accommodate your method of grounding In line fuse or c...

Page 5: ...mined value the fan is activated and cool air is drawn in through the lower intake vents on the endplate This cool air flows below the circuit board through the fan and across the internal fins cooling the heatsink The warm air is then forced out through the upper endplate exhaust vents The New PCX amplifiers mass has been increased by 2 lbs per linear foot over last year s POWERCLASS amplifiers r...

Page 6: ...to the amplifier The Power Ground PowerLock will accommodate 4 gauge wire for the PCX 1500 Power Ground PowerLock 9 When using 16 gauge or larger run the speaker wires from the amplifier location through the vehicle to the speakers Observe the same precautions for routing these wires that you followed for running the power and remote turn on wires Cut off excess and using wire strippers strip 1 4 ...

Page 7: ... Control Move this detented control in a clockwise rotation to adjust the front crossover fre quency from 30Hz to 4kHz See Crossover frequency chart pg 16 5 RCAInputs Connect the RCAcables from the head unit video unit or line driver to these RCA connectors 6 QBASS 1 QBASS 2 Freq Use these switches QBASS 1 QBASS 2 to program the QBASS PLUS circuit frequency 6 12dB Input Attenuation Push this switc...

Page 8: ...tery or both Keep in mind that your amplifiers simply convert electrical energy to acoustical energy and any electrical deficiency will compromise the performance of your sound system For more information about charging system upgrades see your local authorized PrecisionPower Dealer or call PrecisionPower Technical Support at 1 800 62POWER x 229 Locate an area near the amplifier s that is metal an...

Page 9: ...50 200 0 0 0 0 00 00 00 000 200 250 00 00 00 000 000 000 000 0000 300 up 000 000 000 0000 0000 0000 0000 00000 Total Current Draw Length Of Wire To Be Run Your New PCX amplifier has a TC X Crossover Total Control X over See page 19 for crossover Detent Chart 12dB per octave phase correlated crossover built in to provide superior system flexibility without the added expense and installation of an o...

Page 10: ...the first amplifier s Q BASS Remote to become the master control amplifier See your Authorized PrecisionPower Dealer for more information See diagram pg 18 4 Both excessive temperature and low impedance or short circuit conditions will activate the amplifier s AM V protection circuitry which turns down the amplifier s output When the amplifier cools down or the impedance is corrected the AM V will...

Page 11: ...ty installed by an Authorized PrecisionPower Dealer PCX 1500 Power Bandwidth 20 Hz 20 kHz Total Harmonic Distortion 0 02 S N Ratio 110dB Input Topology Instrumentation Input Sensitivity 150mv 12 Volts RMS Input Impedance 10k Ohms Load Impedance mono 2 8 Ohms Supply Voltage 11 15 Volts Damping Factor 500 Slew Rate 50 V µS QBASS PLUS Up To 18dB Boost 30 36 44 or 60Hz Crossovers 12dB Octave Crossover...

Page 12: ...ith its products THIS WARRANTY IS THE ONLY EXPRESS WARRANTY MADE BY PrecisionPower APPLICABLE TO ITS PRODUCTS ANY IMPLIED WARRANTY OR MER CHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE APPLICABLE TO PrecisionPower PRODUCTS IS LIMITED IN DURATION TO THE DURATION OF THIS LIMITED WARRANTY PrecisionPower SHALL NOT BE LIABLE FOR THE INCIDENTAL CONSEQUENTIAL OR COM MERCIAL DAMAGES RESULTING FROM THE B...

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