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Precision Power PCX1250 manual

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Table of contents for the manual

  • Page 1

    Precision Power 9235 South McKemy Street, T empe, Arizona 85284 www.precisionpower.com 8900-4006 PC X 1250 PC X 1500[...]

  • Page 2

    PCX 1250 Power Bandwidth 10 Hz - 50 kHz T otal Harmonic Distortion < 0.02 % S/N Ratio > 110dB Input T opology Instrumentation Input Sensitivity 150mv - 12 Volts RMS Input Impedance 10k Ohms Load Impedance (mono) 2 - 8 Ohms Supply Voltage 1 1 - 15 Volts Damping Factor > 500 Slew Rate > 50 V/µS QBASS ™ Up T o +12dB Boost @ 40Hz Crossov[...]

  • Page 3

    CAUTION: QBASS ™ should only be used in systems with a strong subwoofer section. +12dB is a large amount of bass boost and 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 contro[...]

  • Page 4

    Y ou will need to install an in-line fuse or circuit breaker in the power wire within 18" of the battery. This fuse or circuit breaker is to protect your vehicle from fire in case the power wire shorts to the vehicle body . If you are only using one amplifier, use the fuse rating indicated in this chart. If you are using more than one amplifie[...]

  • Page 5

    Before beginning, disconnect the negative (-) terminal of the battery prior to working on the positive (+) terminal to prevent a short to ground. This is important, unless you want to spend the rest of your life with a nickname like "Sparky," or "Smokey." Reconnect the negative terminal only after all connections have been made.[...]

  • Page 6

    Once you have run both the power and ground wires, it's time to connect the cables to the amplifier. Cut off excess wire and, using wire strippers, strip the ends of the power and ground cables approximately 1/4 inch. Locate the Power Lock power and ground connector (supplied). With a small flat bladed screw driver , loosen the screws before a[...]

  • Page 7

    PCX 1250 PCX 1500 10 11 1 6 7 8 9 10 11 12 2 3 4 5 1 2 3 4 5 6 7 8 9 10 11 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 i[...]

  • Page 8

    The Advanced Instrumentation Input has trickled down from the $15,000 Precision Power 2500F1 . This circuit completely isolates the chassis ground from the audio circuit of the amplifier and reduces noise radiated into your signal cables by up to 40dB. This is equivalent to a noise reduction of approximately one hundred times what the noise level w[...]

  • Page 9

    The following is a basic formula to be used as a guide to determine current draw . A50% amplifier efficiency rating is used as an average. Your new P C X ™ a m p l i f i e r is more efficient than most other amplifiers. This formula is to be used as a guideline. Using wire of a larger gauge can only improve the current transfer of your system. Do[...]

  • Page 10

    Q BASS™ Settings 1 2 Freq. IN IN 30Hz IN OUT 36Hz OUT IN 44Hz OUT OUT 60Hz On the PCX 1500 amplifier, we've taken bass control to a higher level with QBASS PLUS™ . The two QBASS™ switches (labeled 1 and 2) on the front end of the amplifier allow you to select one of four frequency centers 30Hz, 36Hz, 44Hz and 60Hz, with a Q-Factor of 2. [...]

  • Page 11

    NEW! Advanced Instrumentation Input Stage. NEW! 12dB/Octave; HP/LP/FULL; 30-4kHz Crossover. NEW! Independent Line Output Crossover 30-4kHz. Fully Regulated PWM Power Supply . Triple Darlington Output Stage. AM-V Protection Circuitry . Forced Air Thermal Management. QBASS Plus™ Bass Boost. High Voltage Input Capability with -12dB Attenuation Switc[...]

  • Page 12

    This warranty gives you specific legal rights, and you may also have other rights which vary from state to state. Precision Power warrants its products to be free from defects in materials and workmanship under normal use and service for a period of three (3) years from the date of original purchase when the unit is installed by an Authorized Deale[...]