Precision Power PC6800 User Manual

POWER

CLASS

PC6800

Owners Manual

CONTENTS

(Click on a topic to view)

Congratulations Crossover Settings

Features / Specifications Inputs

QBASS PLUS

Installation Input, Combine, and Gain

Wiring Troubleshooting

Wiring (continued) Troubleshooting

Power / Ground System Diagram 1

Power, Ground and Remote System Diagram 2

Speaker Wiring System Diagram 3

Bridging System Diagram 4

Endplate Diagram System Diagram 5

Controls Diagram 1 Block Diagram

Crossover Operation

Controls Diagram 2 Warranty

Congratulations and thank you.....

for choosing 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 sound quality, reliability, and value. This our commitment to offer you unparalleled versatility and quality for years of dependable service and listening enjoyment.

PrecisionPower

audio epuipment. At

PrecisionPower

performance,

product reflects

S er vice

Do not attempt to service Performing exploratory surgery on your audio equipment yourself will void the warranty. Many parts of your 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 sound as good as the day it was purchased. Contact your authorized service through

PrecisionPower

dealer about obtaining any warranty

.(See Warranty inside back cover)

products yourself.

PrecisionPower

product will always

gear

FOR YOUR RECORDS:

Model Serial Number Purchase Date

C aution!

The extended use of a high powered audio system may result in hearing loss or damage. While systems are capable of 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.

"Concert Level"

PrecisionPower

volumes with

BACK T O CONTENTS

PWM Switching Power Supply Fully Complementary Triple Darlington Output Stage

AM IV

Protection Circuitry

QBASS PLUS QBASS REMOTE PowerLock

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

Completely Designed And Handcrafted In The USA

Specifications

Power Bandwidth: 4.5 Hz - 100 kHz Total Harmonic Distortion: 0.02 % Input Topology: Differential Input Sensitivity: 150mv - 12 volts RMS Input Impedance: 10k Ohms Load Impedance (stereo) 2 - 8 Ohms Load Impedance (bridged) 4 - 8 Ohms (Channels 1-4) Load Impedance (bridged) 2 - 8 Ohms (Channels 5-6) Supply Voltage 11 - 15 volts Damping Factor >500 Slew Rate >50 V/µS Idle Current: 2.25 Amps

FEATURES / SPECIFICATIONS

™

Compatible

Speaker and Power Wire Connectors

Dealer

Continuous Output Power

CHANNELS 1/2

50 WRMS x 2 @ 4Ω per channel 100 WRMS x 2 @ 2Ω per channel 200 WRMS x 1 @ 4Ω bridged

CHANNELS 3/4

50 WRMS x 2 @ 4Ω per channel 100 WRMS x 2 @ 2Ω per channel 200 WRMS x 1 @ 4Ω bridged

CHANNELS 5/6

50 WRMS x 2 @ 4Ω per channel 100 WRMS x 2 @ 2Ω per channel 200 WRMS x 2 @ 1Ω per channel 200 WRMS x 1 @ 4Ω bridged 400 WRMS x 1 @ 2Ω bridged

Dimensions

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

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QBASS PLUS

™

QBASS PLUS

POWERCLASS

a higher level with 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 the plug-in for an optional mounted level control. Adjust the level control clockwise for up to 18dB of boost at your selected frequency and Q.

QBASS™

1 2 Freq. IN IN 30Hz

IN OUT 36Hz OUT IN 44Hz OUT OUT 60Hz

Settings

Optional

BASS REMOTE

This boost control can be mounted in the dash and will supersede the boost control on the endplate.

Optional

PORT

module allows one boost control to operate multiple amplifiers. Each

PORT

™

has outputs for four amplifiers as well as another expansion. See your Authorized Dealer for more information!

™

amplifiers, we've taken bass control to

BASS PLUS

Q = 4

+18dB

+12dB

+6dB

0dB

™

expansion

PORT

™

for greater

™

. The two

BASS

level control and

BASS REMOTE

BASS PLUS

Q = 2

30Hz

36Hz

BASS REMOTE

QBASS

™

+18

BASS

™

dash

™

44Hz

Designed and handcrafted in the USA

60Hz

™

PrecisionPower

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 V ariable 20 Hz - 20 KHz. Sub or Band Pass Channels 5/6, (24dB/Octave mono Fully V ariable 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.

BASS PLUS

CAUTION:

subwoofers. 18dB is a lot of bass boost and could damage full range speakers.

™ on Lowpass assigned to Channels 5/6 or RCA OUTPUT.

BASS PLUS

™

should only be used in systems with strong 2

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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

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 vehic le from fire in case the po wer 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.

80 Amp

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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

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

™

amplifier is more efficient, other amplifiers will probably

Total Input Wattage

Supply Voltage

Example: A

POWERCLASS

= Current Draw (in Amps)

™

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 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.

Power Wire Calculator

Recommended MINIMUM Gauge

Pro6800

amplifier has six channels at 50

POWERCLASS

™

amplifiers will effectively

Total Current Draw Length Of Wire To Be Run

( in Amps) Up to 4ft. 4 to 7ft. 7 to 10ft. 10 to 13ft. 13 to 16ft. 16 to 19ft. 19 to 22ft. 22 to 28ft.

0-20 14 12 12 10 10 8 8 8

20-35 12 10 8 8 6 6 6 4 35-50 10 8 8 6 6 4 4 4 50-65 8 8 6 4 4 4 4 2 65-85 6 6 4 4 2 2 2 0 85-105 6 6 4 2 2 2 2 0 105-125 4 4 4 2 2 0 0 0 125-150 2 2 2 2 0 0 0 00

(

NOTE: The ground wire should be the same gauge as the power wire.

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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,"

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.

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

123

Trk 1

876

BASS

TREBLE

MARKET

PPI

INGDPT

BALANCE

TRACK

VOLUME

RIGHT

FOWARD

REVERSE

LEFT

Positive Battery Terminal

Fuse must be installed within 18" of battery

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

"Smokey."

Avoid sharp edges that could chafe through the insulation.

Warning!

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.

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).

Fuse must be installed within 18" of battery

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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. T erminate 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.

POWER / GROUND

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

technical support at:

Dealer or call

1-800-62POWER

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POWER / GROUND and REMOTE

Fastening screws

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 plugged into the amplifier . The Power/Ground accommodate 4 gauge wire for the

PowerLock

Pro6800

may be

Po werLoc k

will

Power/Ground

PowerLock

Power wires

Connect to Amplifier

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+ 18 hidden pages