info@intsal.be or telephone us in Belgium: (+32) (0)15/87 Important safety and operating instructions This instruction manual contains important safety and operating instructions for the PRO 6800 Express battery charger. Before using the charger, read all instructions and cautionary markings on the battery charger, the battery and the product that requires the battery. This charger is designed for indoor use at normal temperatures. Keep the charger away from direct sunlight, humidity, heat or extreme cold. This battery charger is designed to charge all Ni-Cd and Ni-MH rechargeable batteries in AAA, AA, C, D and 9V sizes. Never mix rechargeable Ni-MH with rechargeable Ni-Cd or other battery types in the same device. Do not mix different battery qualities. New rechargeable batteries are never 100 % charged. It is important to fully charge them before rst use. Attempting to charge any other type of batteries like throw-away cells, alkaline rechargeable (RAM) batteries, Lithium-ion or other types pose a safety hazard as they can explode. Never use the charger with an extension cord. Do not charge leaking or corroded batteries. During charging, the unit and batteries may feel warm. Use the charger in an open space at an ambient temperature between 16 and 29C (60 and 85F). Always unplug the charger from the mains when not in use. Do not disassemble the charger. Take it to a qualied service centre. Incorrect reassembly may result in electric shock or re. Never use the charger as a DC power source for any electrical equipment. To reduce the risk of electric shock, unplug the charger from the outlet before attempting any maintenance or cleaning. Environmental recommendations Regarding used batteries The consumer should return used batteries to the dealers shop or to the collecting boxes for recycling of batteries placed in stores or collecting points. Regarding waste electrical and electronic equipment (WEEE) The equipment that you bought has required the extraction and use of natural resources for its production. It may content hazardous substances for the health and the environment. In order to avoid the dissemination of those substances in our environment and to diminish the pressure on the natural resources, we encourage you to use the appropriate take-back systems. Those systems will reuse or recycle most of the materials of your end life equipment in a sound way. Please do not dispose of WEEE as unsorted municipal waste. The crossed-bin symbol on the equipment or packaging invites you to use those systems. If you need more information on the collection reuse and recycle systems, please contact your local or regional waste administration. For more information on this equipment, please contact us. Save nature! Which batteries can be charged? 1 to 4 Ni-MH or Ni-Cd AA/R6, AAA/R03, C/R14 or D/R20 batteries. 1 or 2 Ni-MH or Ni-Cd 9V/6F22 batteries. Which batteries can discharged? Ni-MH or Ni-Cd AA/R6, AAA/R03, C/R14 or D/R20 batteries. Which batteries can be tested? Ni-MH or Ni-Cd AA/R6, AAA/R03, C/R14 or D/R20 batteries. Operating instructions of the MEMOREX PRO 6800 CHARGING AA/R6, AAA/R03, C/R14, D/R20 batteries WARNING: charging time has been calculated for recharging empty batteries. Batteries which are not completely empty can rst be discharged (read DISCHARGING batteries). a) with the timer control switch (6H 10H 14H 24H) select the correct charging time (according to the charging time chart in this manua). b) push the yellow function switch into the charge position. c) open the lid and insert the rechargeable batteries in the charging compartments ensuring contact is good and polarity (+) and (-) is correct d) connect the plug to a wall electricity socket. e) the red LED will light up to indicate that charging is in progress (see g. with LED indications). Charging will be interrupted automatically after the selected time. f ) after fast charge, the charger will automatically switch to trickle charge (=maintenance charge) and the green LED will light. g) disconnect the charger from the mains before removing the batteries CHARGING 9V/6F22/E-Block batteries a) push the yellow function switch into the charge position. b) open the lid and push the 9V battery into the 9V charging buttons. c) connect the plug to a wall electricity socket. d) the green 9V LED (see LED indications) will light up to indicate that charging is in progress. Charging will only be interrupted when the plug is disconnected from the electric outlet. Refer to the chart with the charging time and disconnect the plug from the mains after the indicated time. e) remove the batteries from the charger. TESTING batteries Before starting to charge the batteries, especially when the batteries are old, the test function can be used to check if the cells can be recharged. WARNING: only rechargeable batteries of 1.2Volt (type AA, AAA, C or D) can be tested with this charger (no 1.5V alkaline or other batteries).

POWERCLASS PC6800 Owners Manual

CONTENTS

(Click on a topic to view)
Congratulations Features / Specifications QBASS PLUS Installation Wiring Wiring (continued) Power / Ground Power, Ground and Remote Speaker Wiring Bridging Endplate Diagram Controls Diagram 1 Controls Diagram 2
Crossover Settings Inputs Crossover Operation Input, Combine, and Gain Troubleshooting Troubleshooting System Diagram 1 System Diagram 2 System Diagram 3 System Diagram 4 System Diagram 5 Block Diagram Warranty
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 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 service and listening enjoyment.

S ervice

Do not attempt to service PrecisionPower products yourself. Performing exploratory surgery on your audio equipment yourself will void the warranty. Many parts of your PrecisionPower gear are custom built to our specifications. Our factory parts are not made available to anyone else nor are they for sale. Our goal is to make sure that your PrecisionPower product will always sound as good as the day it was purchased. Contact your authorized PrecisionPower dealer about obtaining any warranty service through PrecisionPower.(See Warranty inside back cover)
F O R YO U R R E C O R D S : M o d e l Serial Number Purchase Date
C aution! The extended use of a high powered audio system may result in hearing loss or damage. While PrecisionPower systems are capable of "Concert Level" volumes with incredible accuracy, they are also designed for you to enjoy at more reasonable levels all of the sonic subtleties created by musicians. Please observe all local sound ordinances.

BACK TO CONTENTS

FEATURES / SPECIFICATIONS
PWM Switching Power Supply Fully Complementary Triple Darlington Output Stage AM IV Protection Circuitry QBASS PLUS QBASS REMOTE Compatible PowerLock Speaker and Power Wire Connectors Variable, 6-Way Internal Crossover Non-Fading Sub Channels Balanced Differential Input Stage High Voltage Input Capability with Input Attenuation Switch Gold Plated RCA Input and Output Connectors Mixed Mono/Stereo Operation Multiple System Configuration PSC-221 Input Switching Three Year Warranty when installed by an Authorized PrecisionPower Dealer Completely Designed And Handcrafted In The USA

Specifications

Power Bandwidth: Total Harmonic Distortion: Input Topology: Input Sensitivity: Input Impedance: Load Impedance (stereo) Load Impedance (bridged) Load Impedance (bridged) Supply Voltage Damping Factor Slew Rate Idle Current: 4.5 Hz - 100 kHz 0.02 % Differential 150mv - 12 volts RMS 10k Ohms 2 - 8 Ohms 4 - 8 Ohms (Channels 1-4) 2 - 8 Ohms (Channels 5-6) 11 - 15 volts >500 >50 V/S 2.25 Amps
C o n t i nu o u s O u t p u t Pow e r
CHANNELS 1/WRMS x 2 @ 4 per channel 100 WRMS x 2 @ 2 per channel 200 WRMS x 1 @ 4 bridged CHANNELS 3/WRMS x 2 @ 4 per channel 100 WRMS x 2 @ 2 per channel 200 WRMS x 1 @ 4 bridged CHANNELS 5/WRMS x 2 @ 4 per channel 100 WRMS x 2 @ 2 per channel 200 WRMS x 2 @ 1 per channel 200 WRMS x 1 @ 4 bridged 400 WRMS x 1 @ 2 bridged

Dimensions

Length - 25.25" Height - 2.25" Width - 8.9"

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QBASS PLUS

Q BASS PLUS

On POWERCLASS amplifiers, 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 - 30 Hz, 36 Hz, 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 panel you will find the QBASS level control and the plug-in for an optional QBASS REMOTE dash mounted level control. Adjust the level control clockwise for up to 18dB of boost at your selected frequency and Q. Q BASS PLUS

Q B A S S Settings Freq.

IN IN OUT OUT IN OUT IN OUT 30Hz 36Hz 44Hz 60Hz Q=4
+18dB +12dB +6dB 0dB 30Hz 36Hz 44Hz 60Hz
Optional QBASS REMOTE This boost control can be mounted in the dash and will supersede the boost control on the endplate.

EM QBASS R

Designe

d and ha

d in the USA

ndcrafte

Optional QPORT expansion 0 module allows one boost control to operate multiple amplifiers. Each +1 QPORT has outputs for four amplifiers 8 as well as another QPORT for greater expansion. See your Authorized PrecisionPower Dealer for more information! Crossover Specifications
PC PRO 6800 Linkwitz-Riley crossover topology used throughout. High Pass (Channels 1/2, 12dB/Octave stereo) Fully Variable 20 Hz - 20 KHz. Band Pass (Channels 3/4, 12dB/Octave stereo) Fully Variable 20 Hz - 20 KHz. Sub or Band Pass Channels 5/6, (24dB/Octave mono Fully Variable 50 Hz - 500 Hz Lowpass or 12dB/Octave stereo 20 Hz - 20 KHz Bandpass). Sub or Band Pass RCA outputs will be the opposite of Channels 5/6 Crossover. QBASS PLUS on Lowpass assigned to Channels 5/6 or RCA OUTPUT. should only be used in systems with strong subwoofers. 18dB is a lot of bass boost and could damage full range speakers.

CAUTION: QBASS PLUS

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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 3 Speaker wire - 16 gauge or larger Grommets (sized to work with the power wire you plan to use in your installation) Tube of silicone sealant

Fuse requirements

Amplifier
Maximum Fuse Rating 80 Amp

Pro6800

You 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 amplifier, add up the fuse ratings for all the amplifiers. This sum is the rating for your fuse or circuit breaker. You may also want to add a power distribution block near your amplifiers to keep the wiring tidy.

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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 Example: A POWERCLASS Pro6800 amplifier has six channels at 50 watts RMS per channel into 4 Ohms (50 x 6 = 300). You would use the formula in the following way: 300W x 2 = 600W 600W = 50A Total current draw. 12V If the same amplifier is driven into a 2 Ohm stereo or 4 Ohm mono load, double it's 4 Ohm RMS rating. All POWERCLASS amplifiers will effectively double their power at this load. 300W x 2 x 2 = 1200W 1200W = 100A Total current draw. 12V If you are using more than one amplifier, add up the total current draw for all of them and choose the appropriate gauge based on the grand total.

Pow e r W i r e C a l c u l a t o r
Recommended MINIMUM Gauge
Total Current Draw ( in Amps) Up to 4ft. Length Of Wire To Be Run 7 to 10ft. 10 to 13ft. 13 to 16ft. 16 to 19ft. 19 to 22ft. 22 to 28ft.

4 to 7ft.

0-20 20-35 35-50 50-65 65-85 85-105 105-125 125-150
NOTE: The ground wire should be the same gauge as the power wire.

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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 frayed or broken.
Positive Battery Terminal
Fuse must be installed within 18" of battery Run signal cables (RCAs) and remote turn-on lead down the opposite side of the vehicle of the power wire to avoid radiated noise.
eject BASS VOLUME LEFT TREBLE TRACK RIGHT FOWARD REVERSE

MAR KET ING DPT

Drill a hole in the firewall and use a rubber grommet to keep wire from shorting.

BALANCE

Run the cables under the carpet near the side of the vehicle. Be careful not to drill or screw into the wires when you replace the trim. Avoid sharp edges that could chafe through the insulation.
For systems over 300 watts, add a ground cable from the amp to the battery (see page 6).
Firmly attach Amp Ground Wire to solid metal (see page 6).

Wa r n i n g !

Fuse must be installed within 18" of battery
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 soldering this connection. After the connection is complete, coat the area (on both sides) with silicone or some similar material to prevent rust from developing on the bare metal. If your grand total current draw is over 50 amps (or total output power is over 300watts), you should run a ground wire beside your power wire from the battery to the amplifier(s) in addition to your regular ground wire. Keep the ground and power wires as close together as possible, and use the same gauge wire for both. This will ensure that you have a good ground path, and may eliminate such potential problems as engine noise and overheated amplifiers. Charging System Considerations If your grand total current draw is over 100 amps (or total output power is over 600watts), you are probably exceeding the capability of your charging system. Dimming lights and fluctuating voltage are solid indicators that you need to upgrade your alternator, battery (or go to multiple batteries), 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.

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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 PowerLock may be plugged into the amplifier. The Power/Ground PowerLock will accommodate 4 gauge wire for the Pro6800. Power/Ground PowerLock

Power wires

Fastening screws

Connect to Amplifier

7 BACK TO CONTENTS
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 top of the connector and insert the Channels 5/6 speaker leads into the end. Check to be sure you've maintained proper polarity before securing each wire.
Speaker PowerLock Connector
Right Speaker negative Right Speaker positive Remote turn on Left Speaker positive Left Speaker negative
Right Speaker negative Right Speaker positive Left Speaker positive Left Speaker negative

Speaker/Remote PowerLock

For the front and rear channels, locate the four terminal speaker PowerLock connectors. On your new Pro6800 PowerClass Amplifier, all speaker PowerLocks plug into the amplifier with the screws facing up. Loosen the screws on the top of the blocks and insert the stripped ends of the speaker wires into the end. Double check polarity, secure each wire by tightening the screws, and plug the PowerLock connector into the amplifier with the screws on top.

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BRIDGING
Bridging Any or all pairs of channels (1/2, 3/4 or 5/6) on your POWERCLASS multi channel amplifier are capable of being bridged into a 4 ohm mono output without switches or bridging modules (2 ohm mono on Channels 5/6). 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 always be working with the wires of a single POWERLOCK speaker connector when bridging a pair of channels. NOTE: It is important that a minimum 4 ohm impedance is observed (2 ohm mono on Channels 5/6). If the impedance drops significantly below 4 ohms while the amplifier is wired in the bridged configuration, the amplifier's protection circuitry may engage. Mixed Mono Output The ability to run stereo speakers while simultaneously running a mono output from the same channel pair is accomplished by running the stereo speakers normally and tapping into the appropriate wires for the "mixed mono" channel (left channel positive for the positive speaker wire and right channel negative for the negative speaker wire). Total speaker impedance should be no lower than 2 ohms on the stereo channels and 4 ohms on the mono channel. NOTE: Passive crossovers must be used for "mixed mono" operation. Choose a low pass crossover around 100Hz for your subwoofer, then choose a high pass crossover for your stereo channels. The high pass crossover must be at the same or slightly higher frequency than the low pass crossover to maintain the correct impedance. See your PrecisionPower dealer or call 1-800-62POWER for more information about passive crossovers.

9 BACK TO CONTENTS

ENDPLATE DIAGRAM Pro6800
1. Q SELECT 4/2 Push this button in for a Q setting of 4 and out for a setting of 2. 2. QBASS 1 Use this switch with the QBASS 2 to program the QBASS PLUS circuit. (see page 2). 3. QBASS 2 Use this switch with the QBASS 1 to program the QBASS PLUS circuit. (see page 2). 4. COOLING VENTS (see page 16). 5. SPEAKER/REMOTE CONNECTOR After connecting remote and speaker wires, plug in the PowerLock connectors here (see pages 7-9). 6. -12dB For use with high level inputs (4V up to 12V). Push this switch in to attenuate the input by 12dB (see page 14). 7. INPUTS A Plug in the Front RCA leads from your head unit here (see page 14 & 16). 8. INPUTS B Plug in the Rear RCA leads from your head unit here (see page 14 & 16). 9. OUTPUTS Left and Right RCA outputs provide band pass or mono low pass signal to another amplifier. 10. POWER / MUTE indicator A green light indicates that the amplifier is on, a red light indicates that the amplifier's muting circuits have been engaged by an ACM-420. 11. QBASS Level Turn this control clockwise to boost the QBASS PLUS circuit by up to 18dB. 12. 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) 13. POWER / GROUND POWERLOCK After you have securely connected your power and ground wires, plug in the Power / Ground POWERLOCK connector here.

Q SELECT 4/2

CHANNELS 1 / 2 L- L+ R+ R-
CHANNELS 3 / 4 L- L+ R+ R-
CHANNEL 5 / 6 L- L+ REM R+ R-

-12dB INPUTS A L RL RL R

INPUTS B OUTPUTS

PC PRO 650 12/13/96

POWER / MUTE
Designed and Handcrafted in the U.S.A.

QBASS REMOTE

Highpass crossover adjustment (12dB/octave) and GAIN control for CHANNELS 1/2

CHANNEL 1 / 2 GAIN

X10 200Hz-20K
20Hz-2K CHANNEL 3 / 4 GAIN
20Hz-2K CHANNEL 5 / 6 GAIN

X10 200Hz-20K 20Hz-2K

20Hz-2K

CONTROLS DIAGRAM ONE

LP / BP

COMBINE

50Hz-500Hz
PSC: Push this switch "IN" to use a PSC-221 on channels 3/4. (COMBINE switch out)
Highpass and Lowpass crossover adjustments and GAIN controls for CHANNEL 3/4 allow for either Highpass, Bandpass or Lowpass.

COMBINE switch: Switch pushed 'IN' connects the rear channels to the Inputs A. Switch 'OUT' allows front-to-rear fading.
When LP/BP switch is 'OUT', Bandpass crossover adjustment (Channels 5/6, 12dB/octave) is the same as Channels 3/4 and Lowpass goes to RCA OUTPUTS. OR When LP/BP switch is pressed in Channel 5/6 will be Lowpass (24dB/octave) and RCA OUTPUTS are Bandpassed.
Settings For A Basic 3 Way System plus Sub Output
Example Crossover Points: Tweeters / Mid - 4 KHz Mid / Midbass - 521 Hz Midbass / Sub - 70 Hz
Count 31 "clicks" starting from 1 to get to 4 KHz

32 12dB 21 IIIIIIII

IIIIIIII

21 IIIIIIII

Switch Pushed "IN"

IIIIIIII III I

Count 14 "clicks" X10 starting from 1 200Hz-20K to get to 521 Hz

32 12dB

III III
Count 16 "clicks" X10 starting from 1 200Hz-20K to get to 70 Hz
Switch Pushed "OUT"

41 20Hz-2K IIII

32 24dB

CONTROLS DIAGRAM TWO

COMBINE LP / BP

Mid Bass

Mid Range

521 Hz

(RCA outputs)
Resulting frequency response at speaker outputs

CHANNEL 3 / 4 GAIN

CHANNEL 5 / 6 GAIN Count 14 "clicks" starting from 1 to get to 521 Hz
Count 9 "clicks" starting from 1 to get to 73 Hz

Tweeters

20 KHz
CROSSOVER SETTINGS All 12dB/octave 20Hz - 21KHz HighPass and BandPass Position X1-Out X10 - In
Hz 20 Hz 20 Hz 20 Hz 21 Hz 22 Hz 23 Hz 25 Hz 28 Hz 31 Hz 34 Hz 38 Hz 43 Hz 50 Hz 59 Hz 70 Hz 80 Hz 87 Hz 94 Hz 99 Hz 107 Hz 117 Hz 128 Hz 140 Hz 155 Hz 173 Hz 193 Hz 220 Hz 255 Hz 310 Hz 385 Hz 492 Hz 608 Hz 744 Hz 936 Hz 1.19 KHz 1.45 KHz 1.77 KHz 2.08 KHz 2.10 KHz 2.10 KHz 220 Hz 220 Hz 220 Hz 220 Hz 222 Hz 240 Hz 255 Hz 276 Hz 299 Hz 324 Hz 360 Hz 401 Hz 452 Hz 521 Hz 609 Hz 712 Hz 836 Hz 916 Hz 976 Hz 1.04 KHz 1.12 KHz 1.21 KHz 1.30 KHz 1.42 KHz 1.59 KHz 1.77 KHz 2.00 KHz 2.28 KHz 2.67 KHz 3.17 KHz 4.00 KHz 5.11 KHz 6.50 KHz 8.10 KHz 10.04 KHz 12.75 KHz 15.45 KHz 18.45 KHz 20.00 KHz 21.00 KHz 21.00 KHz 13 BACK TO CONTENTS
24dB/octave mono LowPass Position Frequency
Hz 52 Hz 54 Hz 56 Hz 56 Hz 60 Hz 64 Hz 68 Hz 73 Hz 78 Hz 85 Hz 92 Hz 102 Hz 113 Hz 127 Hz 144 Hz 158 Hz 168 Hz 175 Hz 183 Hz 191 Hz 200 Hz 210 Hz 221 Hz 234 Hz 246 Hz 260 Hz 277 Hz 295 Hz 315 Hz 337 Hz 362 Hz 382 Hz 396 Hz 410 Hz 422 Hz 431 Hz 438 Hz 444 Hz 450 Hz 450 Hz
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

(+) Positive LEFT input (-) Negative (+) Positive RIGHT input (-) Negative
WARNING: If you are using a source unit with bridged high powered (or "floating ground") speaker outputs, a suitable high to low level adapter must be used. If you are unsure about your head unit see your local PrecisionPower dealer or call 1-800-62Power.
Balanced Differential Inputs This circuitry 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 would be without this circuitry. It provides all the benefits of a true 'balanced' line without the need of any special cables (see diagram below). This type of input works with any conventional RCA cable.

music noise

(+) ( +

music and noise

signal and ground

(+) ( noise cancels

music NO noise

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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. CHANNELS 1/2 The first row of controls on the top of your Pro6800 allow you to send a variable highpass signal (20 Hz to 20 KHz) to Channels 1/2. (12dB/octave) With the X10 switch in the "out" position, crossover adjustment can be made by turning the highpass dial up or down for crossover points between 20 Hz and 2000 Hz. By pressing the X10 switch "in" you are able to make crossover adjustments between 200 Hz and 20 KHz. A separate gain control is designated for these channels and should be adjusted according to page 16. CHANNELS 3/4 The second row of controls on the top of your Pro6800 allow you to send a variable highpass or bandpass signal (20 Hz to 20K Hz) to Channels 3/4. These controls operate in the same fashion as above. The first set of controls are the highpass side of the bandpass, and the second set of controls are the lowpass side of the bandpass. In order to get a full highpass to 20 KHz press the second X10 switch in and turn the second (lowpass) dial fully clockwise to 20 KHz position. CHANNELS 5/6 The third row of controls on the top of your Pro6800 operate in the same fashion as Channels 3/4 crossovers. However, you have one more option on these channels: you can select a bandpass crossover (bandpass 2 - third row) or lowpass (fourth row). By leaving the LP/BP switch out the bandpass 2 signal will be assigned to CHANNEL 5/6 and lowpass assigned to the RCA outputs.By pressing the LP/BP switch in, the lowpass (fourth row) will be assigned to CHANNEL 5/6 and bandpass 2 assigned to the RCA OUTPUTS. The lowpass dial can be adjusted from 50 Hz to 500 Hz and provides a 24dB/octave slope.

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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 INPUT A signal to channels 3/4 as well. PSC Switch Channels 5/6 will be used as subwoofer channels in most cases, and therefore receive summed information from Inputs A and B. This allows Front/Rear fading without affecting the subwoofer level. In order to use a PSC-221 phase shift controller on bandpassed midrange drivers (Channel 3/4) without causing cancellation in your subwoofer channels, you can isolate Inputs B to Channel 3/4 only by pushing the PSC switch 'IN'. Adjusting The Amplifier Input Gain 1. Adjust all amplifier input gain controls to just above minimum sensitivity (fully counterclockwise). 2. Using the cleanest source (CD), with music playing turn up the head unit until you can hear distortion. Now turn it down a bit until you cannot hear the distortion. 3. Increase the Amplifier gain (clockwise) until the onset of audible distortion. Then decrease the gain to the point just before the distortion starts. This setting minimizes background noise and prevents overload. 4. Repeat step 3 for any remaining amplifiers in the system. 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.

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TROUBLE SHOOTING

NO SOUND YES

Is the LED lit?
NO Check Power and Remote turnon wire for voltage. Make sure Ground wire is secure. WHAT COLOR ? GREEN RED Substitute RCA inputs with Central Muting is engaged. Remote turn-on wire must have another source, and connect a known good speaker to one more than 8 volts to release channel. central muting. Check Remote turn-on at the head unit. You may need to install a relay if the head unit doesn't put out sufficient voltage. STILL NO SOUND - See your Authorized PrecisionPower Dealer or Call 1-800-62POWER. SOUND IN ONE CHANNEL ONLY Reverse left and right speakers by unplugging the speaker connector, turning it over and plugging it back in. SOUND IS NOW IN SAME CHANNEL OPPOSITE CHANNEL Problem is in the speaker or Reverse RCA inputs speaker wire of the silent channel. SOUND IS NOW IN SAME CHANNEL OPPOSITE CHANNEL Reverse RCAs at head unit Problem is in the Amp. See your local Authorized PrecisionPower Dealer or call 1-800-62POWER. SOUND IS NOW IN SAME CHANNEL OPPOSITE CHANNEL Problem is in the head unit Problem is in the RCA cables

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NO SOUND ON BANDPASS CHANNELS Be sure that crossover points are set properly. Is the highpass set at a higher frequency than the lowpass or the lowpass set lower than the highpass, creating a no pass? YES Readjust crossovers and then test system again. NO Check speaker wiring for short circuits or loose connections. Be sure that powerlock plugs are in place properly (screws facing up) and observe correct wiring diagram.
STILL NO SOUND - See your Authorized PrecisionPower Dealer or Call 1-800-62POWER. NO SOUND IN BRIDGED MODE Check speaker wiring for short circuits or loose connections. Be sure that powerlock plugs are in place properly (screws facing up) and observe correct wiring diagram.
AMPLIFIER TURNS DOWN Both excessive temperature and low impedance (or short circuit) conditions will activate the amplifier's AM IV protection circuitry, which turns down the amplifier's output. When the amplifier cools down, or the impedance is corrected, the AM IV will restore full power. If your amp is turning down check your speakers and wiring for low impedance and short circuits.Also,ensure that there is nothing blocking the normal convective airflow of the amplifier. No obstruction should be within 2" of the amplifier on all sides. NOTE: Low battery voltage will cause the amplifier to run warmer.

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SYSTEM DIAGRAM ONE

Source

Inpu Sensitiv t ity

R Input

R Output

PEQ-114

Vol ume

Precis PEQ-11 ionPower 4

PEQ -114

Sub Low Mid Treb le

Made in USA

3.2 KH z

+12d b

zer e Equali Octav

12. 8 KH z

in USA

8 KH z

+12d b +12d b

4 KH z

2 KH z

5 KH z

1 KH z

1.KH z

Po we r

31. 5 Hz

DEQ-230

stereo mon out o in

nd te Grou Remo wer Po

De feat

GA /2 L1 NE

IN IN IN

GA /4 L3 NE

GA /6 L5

X1 z-2 0H 20

B 12d B 12d

K -5 00

0K 0 X1 z-2 0H 20 0K

X1 z-2 0H 20 0K

K -2 K

0 0K X1 z-2 0H 20

MB INE

0 X1 z-2 0H 20

SS INP UT S A L R
L R L R INP UT S OU B TP UT S

Channel 1 HighPass

Power ision

Channel 2 HighPass

Channel 3 Highpass

Channel 4 Highpass

Channel 5/6 Lowpass Subwoofer Subwoofer

Basic System Layout

19 BACK TO CONTENTS

SYSTEM DIAGRAM TWO

Input L

Rear Outp ut L

In pu t Se

PAR-245

Powe In-Cl

Pre PAR- cisionPowe 245 r

ty vi ti nsi

Front Output L

LED Sele

Frequenc y Adju st

Low-M id

Low High-Mid

Treble

Fade r Defe
at Sub Low Low -Mid High -Mid

PSC-221

3.2 KH z 6.4

-12db +12d b

rol Cont USA e Shift e in Phas Mad

20 KH z

+12d b -12db

Pre cis

er onPow Precisi C-221

Le ft Ph as e

Po w er

r we Po ion

in outNon-inver Inver ted ted / Acti / ByP ve ass

stereo mon

out o in

To Inputs B To Inputs A

SS LL+

B 12d B 12d B 12d

X1 z-2 0H 20 0K 0 X1 z-2 0H 20
0 0K X1 z-2 0H 0K X1 z-2 0H 20

Channel 3 BandPass

Channel 4 BandPass
System Layout Using PSC Switch

20 BACK TO CONTENTS

Rig ht

Ph as e

SYSTEM DIAGRAM THREE

t pu In ty vi ti nsi Se

PAR245

0K X1 z-2 0H 20

RCA Output Bandpass 12dB/Octave

PC AMP

Channel 1 HighPass tweeter
Channel 2 HighPass tweeter
Channel 3 BandPass Midrange
Channel 4 BandPass Midrange

MidBass

Channel 5/6 Lowpass Sub Woofers 24dB/Octave
Four-Way System Layout with MidBass Amp

SYSTEM DIAGRAM FOUR

Pre cis ion

9.3 7K Hz -15.7 5K Hz

er onPow Precisi C-221 PS

14K Hz -23.3 7K Hz

4K Hz -9. 37K Hz

1.9 5K Hz -4. 5Kh z

Bo ost

+12 db

940 Hz -1. 25K Hz

330 Hz -1KH z

160 Hz -550H z

10 Band

lizer ic Equa metr Para

e in Mad

r we Po

80H z-2 60H z

in outNon-inver Inver

40H z-1 30H z

20H z-7 0H z

De fea t

10 PMQ-2

er Pow

ted ted / Acti / ByP ve ass

PMQ-210

ut attenua

er onPow

tion B in

ster eo mon out oin

To Inputs B

To Inputs A

CH AN NE GA /2 L1 NE IN IN IN GA /4 L3 NE GA /6 L5
RCA Output Lowpass 24dB/Octave
Channel 5 BandPass MidBass
Channel 6 BandPass MidBass
Four-Way System Layout using a separate PC amp for Subs

SYSTEM DIAGRAM FIVE

+12 db +12 db -12db

tion -12d B in

er Pow ision 10

Right Left

Y-cords
IN IN IN CH AN NE GA /2 L1 NE IN IN IN

Hz 0 X1 z-2 0H 20

Hz -2 K

LLL+ R+

L R L R INP
L R UT S OU B TP UT S L R INP UT S OU B TP UT S
Left Front HighPass 200W bridged Channels 1/2
Right Front HighPass 200W bridged Channels 1/2
Left Rear HighPass 200W bridged Channels 3/4
Right Rear HighPass 200W bridged Channels 3/4
2 400W bridged Channels 5/6
Two Pro6800 Amps bridged for Left and Right channels

23 BACK TO CONTENTS

12 dB/octave High Pass
20Hz - 2KHz x10 200Hz - 20KHz AMP

INPUTS A

CHANNEL 1/2

Gain Adjust

20Hz - 2KHz x10 200Hz - 20KHz

Inverter

INPUT ATTENUATION
12 dB/octave High Pass 12 dB/octave Low Pass
20Hz - 2KHz x10 200Hz - 20KHz 20Hz - 2KHz x10 200Hz - 20KHz

INPUTS B

input combine Gain Adjust

CHANNEL 3/4

BLOCK DIAGRAM Pro6800
20Hz - 2KHz x10 200Hz - 20KHz 12 dB/octave High Pass 12 dB/octave Low Pass 20Hz - 2KHz x10 200Hz - 20KHz 20Hz - 2KHz x10 200Hz - 20KHz

in out

PSC SWITCH

24 dB/octave Low Pass

50Hz - 500Hz

OUTPUTS

CHANNEL 5/6

Crossover Select Switch

WA R R A N T Y Three-Year Limited U.S.A. Warranty
This warranty gives you specific legal rights, and you may also have other rights which vary from state to state. PrecisionPower 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 Dealer. Non-Authorized Dealer installed products carry a one (1) year parts and ninety (90) days labor limited warranty. The extent and conditions of Limited Warranty are as follows: 1. Authorized Dealer Installed Products: PrecisionPower will either repair or replace at no charge, to the original purchaser, any unit which PrecisionPowers examination discloses to be defective and under warranty, provided the defect occurs within three (3) years from the date of original purchase when the unit is installed by an Authorized Dealer and the product is returned immediately to PrecisionPower. This warranty is not transferable. 2. Non-Authorized Dealer Installed Products: PrecisionPower will either repair or replace at no charge, to the original purchaser, any unit which PrecisionPowers examination discloses to be defective and under warranty, provided the defect occurs within ninety (90) days from the date of purchase and the product is returned immediately to PrecisionPower. Warranty claims beyond ninety (90) days for Non-Authorized Dealer Installed Products will be for parts only and will extend for one (1) year from the date of purchase. This warranty is not transferable. 3. The date of purchase and proof of Authorized Dealer Installation of a PrecisionPower product must be established by an original sales receipt which must accompany the article being returned for warranty work. 4. This warranty shall NOT apply to any PrecisionPower product found to have the original factory serial number removed or defaced. All products received (by PrecisionPower) for in warranty or out of warranty repair, with their original serial numbers removed or defaced, will NOT be repaired and will be returned to sender, freight collect. Refer to original packaging for the serial number of your component speakers. 5. The provisions of this warranty shall not apply to any PrecisionPower product used for a purpose for which it is not designed, which has been repaired or altered in any way, or which has been connected, installed, or adjusted other than in accordance with the instructions furnished in PrecisionPowers owners manual. Nor shall this warranty apply to any part which has been subject to misuse, neglect, or accident. 6. PrecisionPower does not authorize any other persons to assume any other liability in connection with its products. THIS WARRANTY IS THE ONLY EXPRESS WARRANTY MADE BY PRECISIONPOWER APPLICABLE TO ITS PRODUCTS. ANY IMPLIED WARRANTY OR MERCHANTABILITY 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 COMMERCIAL DAMAGES RESULTING FROM THE BREACH OF THIS WRITTEN WARRANTY. Some states or provinces do not allow the exclusion or limitation of incidental or consequential damages or limitations on how long an implied warranty lasts; so the above limitations or exclusions may not apply to you. 7. Your product will be serviced on an in-warranty basis within the warranty period for the correction of warranted defects. If improper operation of your PrecisionPower product should occur, contact your Authorized Dealer for assistance with the return and factory repair of your PrecisionPower product. If an Authorized Dealer is not available, return the unit including your name, telephone number, return address, a copy of your sales receipt, and a description of the problem to: PrecisionPower,Inc. Service Department 4829 S. 38th Street Phoenix, AZ 85040-2964 TO RETURN PRECISIONPOWER PRODUCTS OUT OF WARRANTY: Return the unit, postage prepaid, in the original protective carton. Please include a description of the problem and, if desired, a request for an estimate of repair costs. Unless a request for an estimate is included, the unit will be repaired as necessary. Please contact PrecisionPower Customer Service at 1800-62-POWER for questions concerning out of warranty repair charges. Repaired unit will be returned with an itemized statement, C.O.D.