PCX 250 PCX 280 PrecisionPower 9235 South McKemy Street, Tempe, Arizona 85284 www.precisionpower.
NEW! Advanced Instrumentation Input Stage. NEW! 12dB/Octave; HP/LP/FULL; 30-4kHz Crossover. NEW! Independent Line Output Crossover 30-4kHz. Adaptive PWM Power Supply. Triple Darlington Output Stage. AP-IV Protection Circuitry. Forced Air Thermal Management. (PCX 280) QBASS ™ Bass Boost (PCX 250) QBASS Plus™ Bass Boost. (PCX 280) High Voltage Input Capability with -12dB Attenuation Switch. Gold Plated RCAInput and Output Connectors. PowerLock™ Speaker and Power Wire Connectors. Mixed Mono/Stereo Operation.
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 circuit breaker - see fuse chart below Power and ground wire - see Power Wire Calculator on page 4 Speaker wire - 12 to 16 gauge Grommets (sized to work with the power wire you plan to
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.
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 1-800-62POWER. 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 PowerLock power and ground connector (supplied).
Your New! PCX™ amplifier has a TC-X Crossover (Total Control X-over©) 304kHz (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 outboard crossover. The speaker outputs of your amplifier are high-pass, low-pass, or all-pass depending to the HP/LP/Full switch on the front endplate.
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 o ff excess and, using wire strippers, strip 1/4 inch of insulation. Locate the speaker/remote turn-on PowerLock connector. Loosen the outer screws on the underside of the connector. Insert the speaker leads into the end.
PCX 250 Power Panel 4 1 5 The New! PCX™ amplifiers mass has been increased by 2 lbs. per linear foot over last year’s P O W E RC L A S S ™ amplifiers, resulting in far superior heat dissipation. The unique heatsink on your PCX™ amplifier has been designed with fins on the inside of the aluminum extrusion. This allows for the transfer of heat from the circuitry to the heatsink fins and out through the vents in the endplates.
Locate an area near the amplifier(s) that is metal and clean an area about the size of a quarter to bare metal. Inspect the area around and underneath to be sure you won't drill into wires, brake or fuel lines, etc. Drill a pilot hole in the middle of this area. Terminate the ground wire with a ring connector and attach it to the bare metal using a #8 sheet metal screw and washer or preferably, a bolt, nut and a star washer (not supplied). We suggest crimping and soldering this connection.
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 PCX™ amplifier 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 not use smaller gauge wire.
QBASS™ (PCX 250) Up to 12dB of Boost centered at 40Hz, with a Q-Factor of 2. QBASS Plus™ (PCX 280) Up to 18dB of Boost with selectable center frequency at 30Hz, 36Hz, 44Hz or 60Hz, with a Q-Factor of 2. Optional QBASS REMOTE™ (PCX 280) This boost control can be mounted in the dash and will supersede the boost con trol on the amplifier endplate. Q BASS™ Settings 1 2 Freq.
Three-Year Limited U.S.A Warranty And thank you for choosing PrecisionPower audio equipment. At PrecisionPower we proudly design, engineer and manufacture audio products at our production facilities. Our award winning engineering team utilizes innovative technology to consistently deliver Absolutely State of the Art TM performance, sound quality, reliability, and value.
