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™
POWERCLASS
PC1400 / PC1800 OWNER’S MANUAL
CONTENTS
(click on a topic to view)
CONGRATULATIONS PC1800 ENDPLATE DIAGRAM
PC1400 FEATURES / SPECIFICATIONS SPEAKER WIRING
PC1800 FEATURES / SPECIFICATIONS INPUTS
QBASS THERMAL MANAGEMENT
QBASS PLUS CROSSOVER/SUBSONIC/GAIN
INSTALLATION PC1800 FREQUENCY CHART
WIRING PC1400 FREQUENCY CHART
WIRING (continued) SYSTEM DIAGRAM ONE
POWER / GROUND SYSTEM DIAGRAM TWO
POWER, GROUND, and REMOTE TROUBLE SHOOTING
PC1400 ENDPLATE DIAGRAM WARRANTY
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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 1400 Adaptive MOSFET Switching Power Supply Fully Complementary Triple Darlington Output Stage 2 Way Variable Crossover with Line Outputs AP-III Protection Circuitry TM QBASS Bass Boost Balanced Differential Input Stage High Voltage Input Capability with Input Attenuation Switch Gold Plated RCA Input and Output Connectors PowerLock Speaker and Power Wire Connectors Three Year Warranty when installed by an Authorized PrecisionPower Dealer Completely Designed And Hand
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FEATURES / SPECIFICATIONS 1800 Adaptive MOSFET Switching Power Supply Fully Complementary Triple Darlington Output Stage AM IV Protection Circuitry ™ QBASS PLUS Bass Boost ™ QBASS REMOTE Compatible Advanced Buss Technology Forced Air Thermal Management Detented, Variable 24dB/Octave Low Pass Crossover Detented, Variable 24dB/Octave Subsonic Filter Balanced Differential Input Stage High Voltage Input Capability with Input Attenuation Switch Gold Plated RCA Input Connectors PowerLock Speaker and
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™ QBASS ™ QBASS On the PC1400 amplifier, we offer tremendous control ™ of your bass with QBASS . On the front end panel of ™ your PC1400 you will find the QBASS level control. Adjust the level control clockwise for up to 12dB of boost at a factory preset frequency of 40Hz. ™ QBASS +12dB +6dB 0 20Hz 40Hz 60Hz 80Hz 100Hz ™ CAUTION: QBASS should only be used in systems with strong subwoofers. 12dB is a lot of bass boost and could damage full range speakers. 3 BACK TO CONTENTS
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QBASS ™ 0 +18 ™ QBASS PLUS ™ QBASS PLUS On the PC1800 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, 44 Hz and 60 Hz. The Q SELECT switch determines the width of boosted frequencies. A 'Q' of 2 (switch out) will give you a wide boost while a 'Q' of 4 will boost a narrow range of frequencies. (See chart below.) ™ On the rear end
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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, 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 s
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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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ENDPLATE DIAGRAM 1400 1. INPUTS Plug in the RCA leads from your head unit or crossover here (see page 13). 2. GAIN Use this control to match the output level of the head unit to the amplifier (see page 15). 3. -12dB For use with high level inputs (4V up to 12V). Push this switch in to attenuate the input by 12dB (see page 13). 4. XOVER FREQ. Detented control adjusts HP/LP crossover frequency from 20Hz to 5kHz (see pages 15 & 17). 5. HP/LP BUTTON Push this switch in to activate the high pass cro
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ENDPLATE DIAGRAM 1800 1. INPUTS Plug in the RCA leads from your head unit or crossover here (see page 13). 2. GAIN Use this control to match the output level of the head unit to the amplifier (see page 15). 3. SUBSONIC FREQ. This is used to control the detented subsonic filter from 5Hz to 50Hz (see pages 15 & 16 ). 4. LOWPASS FREQ. Detented control adjusts LP crossover frequency from 50Hz to 300Hz (see pages 15 & 16 ). 5. SUBSONIC ON/OFF Push this switch in to activate the subsonic filter (see p
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SPEAKER WIRING Using 14 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. Locate the speaker/remote turn-on PowerLock connector. Speaker PowerLock Connector Right Speaker negative Right Speaker positive Remote turn on Left Speaker positive Left Speaker negative Speaker/Remote PowerLock Although the PC1400/PC1800 is a mono amp
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INPUTS There is a pair of RCA inputs on the front end of your amplifier. The RCA cables from your head unit or crossover plug in here. 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 input attenuation switch. SOURCE Headunit eject 1 2 3 4 5 6 7 8 Trk 1 BASS TREBLE BALANCE TRACK PPI MAR KET ING DPT VOLUME LEFT RIGHT
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THERMAL MANAGEMENT Heatsink Cooling The unique heatsink on ™ your POWERCLASS amplifier has been designed with fins on the inside of the aluminum mass. This allows for the transfer of heat from the circuitry to the heatsink fins and out through the vents in the endplates. Be sure you have ample space around the amplifier for cooling, at least 2" on all sides. Forced Air Thermal Management To manage the additional heat associated with higher output capability, a thermally controlled fan
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CROSSOVER, SUBSONIC and GAIN Crossover PC-1400 Your new Monoblock amplifier has a variable 20-5kHz 12dB/Octave HP/ LP crossover. When you select the LP feature on this amplifier you have made the output RCA's HP, and vice versa when you select HP for the speaker output. PC-1800 The PC-1400 has a variable fourth-order Linkwitz-Riley type, 24dB per octave LP crossover built in to provide system flexibility without the added expense and installation of an outboard crossover. The speaker out
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FREQUENCY CHART PC1800 All crossover frequency controls are detented for improved performance. Each "click" counted from the full counterclockwise position corresponds to a specific frequency. Refer to this chart and page 12 for set-up instructions. DETENT SUBSONIC LOW PASS 1 4.86 Hz 47.62 Hz 2 4.86 Hz 47.62 Hz 3 4.86 Hz 48.62 Hz 4 4.93 Hz 50.20 Hz 5 5.08 Hz 52.80 Hz 6 5.30 Hz 55.60 Hz 7 5.58 Hz 58.80 Hz 8 5.88 Hz 62.00 Hz 9 6.20 Hz 65.60 Hz 10 6.66 Hz 69.40 Hz 11 7.07 Hz 74.00 Hz 12 7.67 Hz 78.
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FREQUENCY CHART PC1400 The crossover frequency control is detented for improved performance. Each "click" counted from the full counterclockwise position corresponds to a specific frequency. Refer to this chart and page 15 for set-up instructions. XOVER FREQ DETENT 1 20 Hz 2 21 Hz 3 21 Hz 4 21.5 Hz 5 22Hz 6 23 Hz 7 24.5 Hz 8 26 Hz 9 27.5 Hz 10 30 Hz 11 32 Hz 12 35 Hz 13 39 Hz 14 43 Hz 15 49 Hz 16 56 Hz 17 64 Hz 18 73 Hz 19 80 Hz 20 88 Hz 21 100 Hz 22 114 Hz 23 134 Hz 24 160 Hz 25 196 Hz 26 260Hz
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R R R Volume F R + + + + + Power In-Clip Fader Defeat Sub Low Low-Mid High-Mid Treble PAR-245 PrecisionPower PAR-245 Made in USA Input Sensitivity Frequency Adjust 1 2 3 4 Sub Low Low-Mid High-Mid Treble Input Rear Output L D elec owe L L L E S t P r OutFpru otnt SYSTEM DIAGRAM ONE Source Unit eject 1 2 3 4 5 6 7 8 Trk 1 BASS TREBLE BALANCE TRACK PPI MAR KET ING DPT VOLUME LEFT RIGHT FOWARD REVERSE PAR-245 Preamp/Equalizer Passive Passive Tweeter Tweeter Crossover Crossover MidRange MidRange Pas
