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™
POWERCLASS
PC4200 / PC4400 / PC4800 / PC6600 OWNER’S MANUAL
CONTENTS
(click on a topic to view)
QBASS / QBASS REMOTE
CONGRATULATIONS
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FEATURES / SPECIFICATIONS CROSSOVER OPERATION
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FEATURES / SPECIFICATIONS (cont.) FREQUENCY DETENT CHARTS
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INSTALLATION INPUT COMBINE / GAIN
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WIRING THERMAL MANAGEMENT
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WIRING (continued) TROUBLE SHOOTING
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POWER / GROUND SYSTEM DIAGRAM ONE / TWO
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POWER, GROUND, and REMOTE SYSTEM DIAGRAM THREE
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SPEAKER WIRING SYSTEM DIAGRAM FOUR
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Congratulations and thank you..... for choosing PrecisionPower audio epuipment. At PrecisionPower we proudly design, engineer and manufacture audio products at our facility in Phoenix, Arizona. Our award winning engineering team utilizes innovative TM technology to consistently deliver Absolutely State of the Art performance, sound quality, reliability, and value. This PrecisionPower product reflects our commitment to offer you unparalleled versatility and quality for years of dependable servic
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FEATURES / SPECIFICATIONS Your new amplifier incorporates some or all of the following features: Adaptive MOSFET Switching Power Supply Fully Complementary Darlington Output Stage AP III Protection Circuitry (PC4200, PC4400, PC6800) AM IV Protection Circuitry (PC4800) ™ QBASS Bass Boost (PC4200, PC4400) ™ QBASS PLUS (PC4800, PC6600) ™ QBASS REMOTE Compatible (PC4800, PC6600) PowerLock Speaker and Power Wire Connectors Detented, Variable 3-way Internal Crossover Non-Fading Sub Channel Balanced
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QBASS ™ 0 +18 FEATURES / SPECIFICATIONS ™ ™ QBASS and QBASS PLUS Specifications ™ QBASS (PC 4200, PC4400, and PC 6600) Up to 12dB of Boost centered at 40Hz, with a Q-Factor of 2. ™ QBASS PLUS (PC 4800) Up to 18dB of Boost with selectable center frequency at 30Hz, 36Hz, 44Hz or 60Hz. Selectable Q of 2 or 4. Optional remote mounted Boost Control. ™ Optional QBASS REMOTE (PC 4800) This boost control can be mounted in the dash and will supersede the boost control on the amplifier endplat
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INSTALLATION Tools/Parts needed for Installation (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, and star washer) 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 - 16 gauge or larger Grommets (sized to wo
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WIRING The following is a basic formula to be used as a guide to determine current draw. A 50% amplifier efficiency rating is used as an average. Your new ™ POWERCLASS amplifier is more efficient, other amplifiers will probably be less. 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. Total RMS output x 2 = Total Input Wattage Total Input Wattage = Current Draw (in Amps) Supply Voltage
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WIRING 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. Factory Ground wire may need to be replaced if it is Positive frayed or broken. Battery Terminal Fuse must be installed within 18" of battery Run signal cables
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POWER / GROUND Grounding 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. 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 solde
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POWER / GROUND and REMOTE 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). With a small flat bladed screw driver, loosen the screws before attempting to insert the cables. Insert the wires into the appropriate hole, and tighten the screws. Once the wires are secure, the
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SPEAKER WIRING 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 inch of insulation. Locate the speaker/remote turn-on PowerLock connector. Loosen the four outer screws on the underside of the connector and insert the front (PC4200, PC4400 and PC4800) or sub (PC660
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BRIDGING Bridging ™ Any or all pairs of channels (front, rear or sub) on your POWERCLASS multi channel amplifier are capable of being bridged into a 4 ohm mono output without switches or bridging modules. This feature permits the creation of a mono channel for a subwoofer or center channel. Deriving the mono channel is accomplished by using the left channel positive wire of the pair as the positive speaker wire and the right channel negative wire as the negative speaker wire. You should al
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ENDPLATE DIAGRAMS ™ POWER / GROUND / QBASS PC4200 POWER Designed and Handcrafted in the U.S.A. + - 241 PC4400 POWER / MUTE Designed and Handcrafted in the U.S.A. + - 231 PC4800 POWER / MUTE Designed and Handcrafted in the U.S.A. QBASS 0 +18 QBASS + - REMOTE 5 2 6 7 13 PC6600 POWER / MUTE Designed and Handcrafted in the U.S.A. QBASS 0 +18 QBASS + - REMOTE 5 1 6 23 1. POWER / GROUND PowerLock After you have securely connected your power and ground wires, plug in the Power / Ground PowerLock connec
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ENDPLATE DIAGRAM 4200 / 4400 1. REAR HP/LP switch This switch is used to select whether the amplifier will provide a high pass (switch in) or low pass (switch out) signal to the rear speakers. (see page 16). 2. REAR GAIN Use this control to match the output level of the head unit to the rear channel of the amplifier (see page 18). ™ 3. QBASS Control Rotate clockwise to boost up to 12dB at 40Hz (see page 15). 4. FRONT GAIN Use this control to match the output level of the head unit to the front
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ENDPLATE DIAGRAM 4800 1. REAR LP FREQ. Use this control to adjust the rear low pass crossover frequency from 44Hz to 315Hz (see page 16). 2. REAR GAIN Use this control to match the output level of the head unit to the rear channel of the amplifier (see page 18). 3. FRONT GAIN Use this control to match the output level of the head unit to the front channel of the amplifier (see page 18). 4. QBASS 1 ™ Use this switch with the QBASS 2 to program the QBASS PLUS circuit. (see page 15). 5. QBASS 2 ™ U
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ENDPLATE DIAGRAM 6600 1. FRONT GAIN Use this control to match the output level of the head unit to the front channel of the amplifier (see page 18). 2. REAR GAIN Use this control to match the output level of the head unit to the rear channel of the amplifier (see page 18). 3. SUB GAIN Use this control to match the output level of the head unit to the sub channel of the amplifier (see page 18). 4. COOLING VENTS (see page 18). 5. SPEAKER/REMOTE CONNECTOR After connecting remote and speaker wires,
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INPUTS There are two sets of RCA INPUTS on the front end of your amplifier. Plug the RCA cables from your head unit into the appropriate set of inputs, front and rear. If your head unit doesn't have RCA outputs don't worry. Simply add a set of RCA plugs (available at your dealer) to your front or rear set of speaker leads (see drawing below), plug them into the input jacks, and push in the -12dB switch. SOURCE Headunit eject 1 2 3 4 Trk 1 5 6 7 8 BASS TREBLE PPI MAR KET ING DPT BALANCE TRACK VOL
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™ ™ QBASS and QBASS REMOTE ™ QBASS For extra BOOM from your system, we've developed the ™ QBASS bass control circuit. The QBASS control is located to the left of the speaker outputs, and allows you to add up to 12dB of boost centered at 40Hz by rotating the control clockwise. ™ QBASS ™ Is a standard feature on the PC4200/PC4400. QBASS ™ QBASSPLUS On PC4800 and PC6600 amplifiers, we've taken bass control ™ to a higher level with QBASS PLUS . The two QBASS switches (l
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CROSSOVER Operation ™ Your new POWERCLASS amplifier has crossover circuits built-in to provide exceptional system flexibility without the added expense and installation of an outboard crossover. See the frequency detent charts on page 17 to set your amplifier's crossover. PC4200 / PC4400 The front crossover is high pass and can be adjusted from 20Hz to 5kHz by turning the FRONT HP FREQ. control. If you need full-range, turn the control fully counterclockwise to the 20Hz position. The rear crosso
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FREQUENCY DETENT CHARTS PC4200 / PC4400 / PC4800 / PC6600 ™ The crossover frequency range of your new POWERCLASS amplifier goes from 20Hz - 5kHz, and the controls are detented for accurate tuning. Each "click" counted from the full counterclockwise position corresponds to a specific frequency. Refer to this chart for set-up instructions. PC4200/PC4400 - Front HP & Rear Xover Freq. PC4800 - Front and Rear HP Freq. DETENT PC6600 - Front and Rear Xover Freq. DETENT 1 20 Hz 1 44 Hz 2 21 Hz 2 44 Hz
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INPUT COMBINE and GAIN Input Combine ™ Your multi channel POWERCLASS amplifier can use both front and rear outputs from your head unit to maintain the ability to fade front to rear, or you can run a single set of RCAs to the front inputs and push in the COMBINE switch on the amplifier end plate to route the front signal to the rear channels as well. Adjusting The Amplifier Input Gain 1. Adjust all amplifier input gain controls to just above minimum sensitivity (fully counterclockwise).
