Precision Power POWER CLASS PAR-245 Owner's Manual

CONTENTS

(click on a topic to view)

Congratulations System T uning
Features and Specifications System Tuning

Mounting Frequency Distribution
Mounting Frequency / Q Selection Code
Wiring Frequency / Q Selection Code
Wiring System One
Functions System T wo
Functions System Three
System T uning T roubleshooting
System T uning Block Diagram
System T uning Warranty

PAR 245 5 Band Equalizer / Preamp OWNERS MANUAL POWER CLASS

TM

Caution!

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.

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

TM

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.

Service

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 insde back cover)

FOR YOUR RECORDS:

Model
Serial Number
Purchase Date

Congratulations and thank you.....

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Signal-to-Noise Ratio 110 dB
Total Harmonic Distortion (1 kHz, 1 VRMS) 0.002%
Boost/Cut Range

±

15 dB
Equalizer Center Frequencies and Q Values:
Band Frequency Q Value
Sub (30 - 66 Hz) 2.0 - 3.0
Low (90 - 300 Hz) 3.0 - 5.5
Low-Mid (430 - 900 Hz) 2.5 - 4.5
High-Mid (950 Hz - 4.6 kHz) 2.5 - 6.0
Treble (6 - 16 kHz) 1.3 - 3.3
Maximum Input Voltage (Flat) 10 VRMS
Maximum Output (10 kΩ Load) 10 VRMS
Frequency Response 3 to 100 kHz
Supply Voltage 9 - 15 VDC
Dimensions 4.60" L

6.75" W

0.95" H

FEATURES / SPECIFICATIONS

1

5 Band Parametric Equalizer
Preamp Line Driver
Choice of 16 Selectable Frequency/Q

Settings for Each Band
Front and Rear Outputs with Fader Control
Dual Selectable Illumination
Center-Detented Boost/Cut Controls
±15 dB Boost/Cut for Each Ban d
Defeat Switch
Gold-plated RCA Input and Output Connectors
PWM (Pulse Width Modulated) Power Supply
Independent L & R Input Gain Adjustments
Input Clip Indicator
Designed and Handcrafted in the U.S.A.

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Specifications

Mounting

To prevent damage to the

PAR-245

while driving, mount it in a

secure place. Choosing the appropriate location will depend

upon your vehicle and the complexity of your system design. Typical
mounting locations for your new

PAR-245

would be in the dash or
center console. Never mount the component in a location that would
subject it to immersion or exposure to water.

2

MOUNTING

Once a location has been chosen, securely mount the

P AR-245

using
the two supplied brackets. There are two different sets of brackets
included with your

PAR-245

. One set is used to flush mount the

PAR-

245

, as shown above. The other set is used to surface mount, as
shown on the next page. The brackets are connected to the equalizer/
preamp by two 6-32 x 1/4" socket head cap screws. We have made
the brackets adjustable to compensate for the uniqueness of each
vehicle. Be Careful! Inspect the area underneath to be sure you are
not drilling into wires, etc. that could be damaged by the drill bit or
screws.

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MOUNTING

3

In-Clip

+

++++

RL

RL

RL

In-Clip

+

++++

RL

RL

RL

In-Clip

RL

RL

RL

Dimensions

6.75"W

4.60" L

0.95"H

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NOTE

4

WIRING

Volume

Fader

Defeat

Sub Low Low-Mid

High-Mid Treble

PAR-245

Power

In-Clip

+

++++R

F

eject

VOLUME

BASS

TREBLE

RIGHT

LEFT

BALANCE

TRACK

REVERSE

FOWARD

123

4

876

5

PPI

MARKET

INGDPT

Trk 1

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.

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5

The next step is to connect the Power , Ground, and Remote wires to
your

PAR-245

. The power wire should run from the mounting location
through the vehicle to the battery or power distribution block. Avoid
sharp corners, creases, and sharp body parts. When passing through
any metal wall (i.e. firewall etc.), a grommet must be used to prevent
the wire from chaffing and shorting to ground.
The ground wire should be of the same gauge as the power wire. As
a rule of thumb, use as short a length of wire as possible.
Find a location near the equalizer that is metal (the floor is ideal) and
clean an area about the size of a quarter to bare metal. Drill a pilot
hole in the middle of this area. Be Careful! Inspect the area underneath
to be sure you are not drilling into wires, brake or fuel lines, etc.
Terminate the wire with a ring connector and attach it to the bare
metal using a #8 sheet metal screw and washer (not supplied). We
suggest crimping and/or soldering this connection. After the connection
is complete, coat the area with silicone or some similar material to
prevent rust from developing.
Finally, the remote wire needs to
run to the power antenna (or
amplifier remote) lead of the head
unit. This wire supplies a 12 volt
signal to the

PAR-245

when the
main system is activated.
Once you have routed the power ,
ground, and remote wires through
the vehicle, it is time to connect the wires to the

PAR-245

. Be sure
that you have not reconnected the ground cable to the negative post
of the battery.
Cut off excess wire and, using wire strippers, strip the power, ground
and remote cables about 1/8 inch. Locate the power, ground, and
remote

Powerlock

connector (supplied). On the top of the connector
are three slotted screws. With a small flat-bladed screwdriver , loosen
the screws before attempting to insert the cables. After you have
inserted the stripped end of each cable into the connector, secure it
by tightening the associated screw. Check that each connection is
tight. If the wires are secure, the connector may be plugged into the

PAR-245

.

Remote

Ground

Powe

r

T/O

B+

Powerlock

WIRING

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6

FUNCTIONS

1. Input

Gold plated RCA inputs. Plug in the RCA cables from the source unit
here.

2. Rear Output

Gold plated RCA outputs. Plug in the RCA cables to your rear channel
amplifier here.

3. Front Output

Gold plated RCA outputs. Plug in the RCA cables to your front channel
amplifier here.

4. LED Select

Push this switch IN for Red Illumination, Leave it OUT for Green.

5. Power

After connecting the Power, Ground and Remote wires, plug in the

PowerLock

connector here.

6, 7. Left and Right Input Sensitivity

Sets Left and Right input gain to match the output level from the
source unit. (See Page 8)

8. Frequency Adjust

Set the Frequency/Q combination for each band with these
switches. See the Frequency/Q Selection Codes on pages 14 and 15.

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7

FUNCTIONS

+

++++

1

2

3 4 5

109

876

1. Power LED

Red light indicates power on.

2. Input Clip

Input-Clip indicator lights when the PAR-245 is overdriven. With the
source unit at 3/4 full volume, adjust the input sensitivity so that the light
blinks only on very loud material.

3. Volume

Leave the source unit at 3/4 full volume, and use this control as the
Master volume control.

4. Fader

Controls the output level to Front and Rear.

5. Defeat Switch

With the switch in the OUT position, the equalizer controls are bypassed.
Use this switch to compare the sound with and without equalization.

6. Sub

Subwoofer band (30 Hz - 66 Hz) Boost/Cut control.

7. Low

Low band (90 Hz - 300 Hz) Boost/Cut control.

8. Low-Mid

Low Midrange band (430 Hz - 900 Hz) Boost/Cut control.

9. High-Mid

High Midrange band (960 Hz - 4.6 kHz) Boost/Cut control.

10. T reble

Treble band (6 kHz - 16 kHz) Boost/Cut control.

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In order to achieve maximum signal-to-noise performance from

a high quality auto stereo system, it is desirable to use high
signal levels wherever possible in the interconnect cables. High signal
levels will reduce the effect of induced noise. The peak level of an
audio signal is usually determined by the clipping level of electronic
components. The following procedure should be used as a guide
before the system installation is completed.

Adjustment of source unit output and

PAR-245

input:

1. Turn

PAR-245

volume control fully counterclockwise.

2. Turn source unit volume 1/2 to 3/4 of maximum.

3. Adjust all

PAR-245

input gains fully counterclockwise.

4. Play a CD or cassette. A loud music selection is desired.

5. Adjust the left input gain control clockwise until the
input clip LED lights. Then adjust the control
counterclockwise slightly until the LED doesn't light. This
setting will minimize system background noise and
prevents overloading the

PAR-245

.

6. Repeat Step 5 for the right input gain control.
There are separate left and right gain adjustments
for each input which allows left/right balance
adjustments.

Adjusting amplifier input gains:

1. Adjust gains to minimum sensitivity (fully
counterclockwise on the gain control of a

PPI

amplifier .)

2. Turn the volume knob on the

PAR-245

to the

3 o'clock position.

3. Increase the gain on the amplifier until the onset of
audible distortion.

4. Repeat step 3 for any remaining amplifiers in the
system.

NOTE: In many multi-amplifier systems, the gain of some

amplifiers may need to be further decreased to
achieve tonal balance.

System Gain Adjustment

8

SYSTEM TUNING

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The

PAR-245

Equalizer/Preamp puts an incredible amount of

control at your fingertips. Correctly adjusted, it can solve many
of the problems you will encounter along your road to perfect sound.
By following these guidelines, you will avoid common pitfalls in system
tuning and get your sound quickly dialed in. We recommend that you
use a Real T ime Analyzer (RT A) to speed things up, but it is possible
to tune your system without it.
It is important to understand what your equalizer actually controls to
be able to use it effectively . On the face of the

P AR-245

are five Boost/
Cut controls each corresponding to a range of frequencies. On the
top are the five sets of Frequency/Q Selection switches to adjust for
each Boost/Cut control on the front of the

PAR-245

(See the chart on
pages 14 and 15 for Frequency/Q selection.)
Q is an indication of how wide or narrow the adjusted bandwidth is. A
low Q will affect a wide range of frequencies around the selected
center frequency resulting in a gently curved shape, while a high Q
affects a narrow band resulting in a peaked shape as shown below.

Parametric Operation

9

SYSTEM TUNING

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10

SYSTEM TUNING

25

31.5

40 50 63 80 100 125 160 200 250 315 400 500 630 800 1K 1.25K

1.6K

2K 2.5K 3.1 5K 4K 5K 6.3K 8K 10K 12.5K 16K 20K

THIRD OCTAVE REAL TIME SPECTRUM ANALYZER

PPI

12
09
06
03

00

03
06
09
12

RTA

NOTE:

If you are using the

PAR-245

as well as another equalizer

(like the

DEQ-230

or

PMQ-210

) Go to step 11.

1) The first step is to locate a suitable source of “pink noise." A
good choice would be the current IASCA competition reference
disc. Also, some RTAs have a built-in pink noise source. Ideally,
the pink noise should play through your head unit, allowing you to
compensate for any frequency response changes caused by it, or
anything else, before the amplifiers.

2) Next, place the microphone from the RTA in the driver's seat at
approximately head level. Initially, set the analyzer to read at 3dB
per step, and set the speed of the RTA ’ s readout to medium. Turn
on your system and start the pink noise. Raise or lower the volume
until you can see all (or most) of your frequency response on the
RTA scale (a little above or below is OK). Make sure all of the
equalizer's frequency controls are centered and look at the RTA
screen.

3) You are trying to achieve a target frequency response, or "curve"
that reflects your preference. Y ou might think that a perfectly straight
line would be best, but it really doesn't sound very good. Instead,
shoot for a curve that starts about 9 dB up at the low frequencies (25
Hz to about 100 Hz) dropping gently to 0 dB in the midrange (250
Hz to 3 kHz), then dropping gently to -9 dB at 16 kHz and 20 kHz.

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11

SYSTEM TUNING

Reading from left to right when looking at the face of your new

PAR-245

, the following are the frequency ranges;

BAND FREQUENCY

SUB 30 Hz - 66 Hz

LOW 90 Hz - 300 Hz

LOW-MID 430 Hz - 900 Hz

HIGH-MID 960 Hz - 4.6 kHz

TREBLE 6 kHz - 16 kHz

6) Looking at the Frequency/Q selection chart for the selected band,
set the switches on top of the

P AR-245

to the frequency that is closest
to the peak (or dip) and has the highest Q. T urn the Boost/Cut control
counterclockwise until the peak (clockwise to correct a dip) comes in
line with your desired curve. (See pages 14 & 15.)

7) When the center frequency of the original peak (or dip) has been
brought down to where you want it, you may see that surrounding
frequencies are still higher than you want them. Select the closest
frequency to the original peak (or dip) that has a lower Q, and see if
you now have a smooth line through that band. You may have to try a
number of Frequency/Q combinations to get the best results.

4) If electronic crossovers are used, any large frequency sections
corresponding to your crossover points that are low or high should
be brought in line using crossover level controls or amp gain
adjustments rather than the equalizer.

5) To begin, you will probably see several peaks and dips in your
RTA curve. Find the lowest offending frequency, and choose the
appropriate frequency range control on the top of the

PAR-245

.

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12

SYSTEM TUNING

25

31.5

40 50 63 80 100 125 160 200 250 315 400 500 630 800 1K 1.25K

1.6K

2K 2.5K 3.1 5K 4K 5K 6.3K 8K 10K 12.5K 16K 20K

THIRD OCTAVE REAL TIME SPECTRUM ANALYZER

PPI

12

09

06
03

00

03
06
09
12

RTA

8) Move to the next peak or dip, and repeat the process until you run
out of frequencies to adjust. Try to remove the peaks before filling the
dips. Periodically , while you are making adjustments, compare the new
curve you are making to the system in an unequalized state by using
the defeat switch on the front face plate of the

PAR-245

.

9) Play your favorite music. If the sound isn't what you're looking for,
go back to the pink noise and smoothly adjust your curve for more
bass, less midrange or whatever you think will correct the sound.
Remember that this is your system - don't let someone else tell you
how it should sound! When the sound is close to what you want, move
to step 10.

10) Play several different music tracks. If you hear an instrument, voice,
or other sound that is too loud, find the sound on the chart on page 14.
This will give you clues as to what frequencies need to be adjusted on
the

PAR-245

. (If you have already tuned using an RTA, this step is
icing on the cake.) Make one adjustment at a time, giving yourself
time to notice the changes.

11) If you are using another equalizer, like the

DEQ-230

or the

PMQ-210

, as well as the

PAR-245

, you should first tune the system

using the other equalizer . This leaves the

P AR-245

free to make wider
frequency adjustments, compensating for equalization differences
between Radio, Cassette, Video and Digital sources, like DAT and
CD. Select Frequency/Q combinations for each band near the center
of the frequency range, with a low Q.

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13

electric guitar

acoustic guitar

violin

cello

double bass

trumpet

french horn

trombone

tuba

soprano sax

tenor sax

clarinet

oboe

flute

piano

synthesizer

female vocal range

male vocal range

tympani

kick drum

tom drum

snare drum

cymbals

electric bass

FUNDAMENTAL NOTE

HARMONIC OR OVERTONE

25 50

100

200 400 800 1.6 3.2 6.4 12.8 20K

FREQUENCY DISTRIBUTION

BA CK TO CONTENTS

14

FREQUENCY/Q SELECTION CODES

BA CK TO CONTENTS

15

FREQUENCY/Q SELECTION CODES

PAR-245 Frequency Controls

Use a small flat-bladed screwdriver to change the
Frequency/Q selection switches to the settings following the
System Tuning guidelines.

BA CK TO CONTENTS

16

SYSTEM ONE

Tweeter

eject

VOLUME

BASS

TREBLE

RIGHT

LEFT

BALANCE

TRACK

REVERSE

FOWARD

123

4

876

5

PPI

MAR KET

ING DPT

Trk 1

PAR-245

Preamp/Equalizer

FRX-456

Crossover

Subwoofer

Subwoofer

Mid Range

Mid Range

Tweeter

PSC-221

Phase Shift Control

High Pass Frequencies

Mid Range Frequencies

Low Pass Frequencies

Precision

Power

PSC-221

M

ade in

U

SA

Power

Phase Shift Control

Left Phase

o

-ø

R

ight P

hase

o

-ø

Precision

Power

Input

Ground

Remote

Power

L

R

in •

Non-inverted /

Active

out •

Inverted /

ByPass

L

ByPass

L

Invert

R

ByPass

R

Invert

600

100

220

600

100

220

Volume

Fader

Defeat

Sub Low Low-Mid

High-Mid Treble

PAR-245

Power

In-Clip

+

++++

R

F

Precision

Power

PAR-245

Made in USA

Pow

er

LED Select

Input

O

utput

Output

R

ear

Front

R

L

Input Sensitivity

1

3

2

4

Sub Low Low-Mid Treble

Frequency Adjust

High-Mid

R

L

R

L

Precision

Power

front

Ground

Remote

Power

combined
inputs • in

Inputs

L

R

rear

L

R

Precision

Power

FRX-456

Made in

USA

Power

Four/Five/Six Way Electronic Crossover

Sub Sonic

46

25

10

7

16

Low Pass

264

118

36

22

70

M

id Bass

492

272

92

56

172

M

id Range

1.77K

344

112

80

192

M

id Range

1.77K

344

112

80

192

Tweeter

7.4K

752

152

80

344

Tweeter

7.4K

752

152

80

344

Low Pass Gain

_

+

∞

+10

Rear Fill Level

_

+

Subwoofer

Front

Rear

Source Unit

POWER

CLASS™

Amplifier

Crossover off

POWER

CLASS™

Amplifier

Crossover off

POWER

CLASS™

Amplifier

Crossover off

PMQ-210

Ten Band Parametric EQ

Q

41.5

Q

41.5

Q

41.5

Q

41.5

Q

41.5

Q

41.5

Q

41.5

Q

41.5

Q

41.5

Q

41.5

PMQ-210

9.37KHz-15.75KHz

HL

4KHz-9.37KHz

HL

1.95KHz-4.5Khz

HL

940H

z-1.25KHz

HL

330Hz-1KHz

HL

160Hz-550Hz

HL

80Hz-260Hz

HL

40Hz-130Hz

HL

20H

z-70Hz

HL

14KH

z-23.37KHz

HL

Power

Precision

Power

L

R

R

L

Made in

USA

10 Band Parametric Equalizer

Cut / Boost

+12db-12db

Cut / Boost

+12db-12db

Cut / Boost

+12db-12db

Cut / Boost

+12db-12db

Cut / Boost

+12db-12db

Cut / Boost

+12db-12db

Cut / Boost

+12db-12db

Cut / Boost

+12db-12db

Cut / Boost

+12db-12db

Cut / Boost

+12db-12db

Defeat

EQ

Ground

Remote

Power

Input

Output

stereo•out
mono•in

attenuation

-12dB in

Precision

Power

BA CK TO CONTENTS

17

SYSTEM TWO

Passive

Crossover

Passive

Crossover

Tweeter

Tweeter

MidRange

MidRange

eject

VOLUME

BASS

TREBLE

RIGHT

LEFT

BALANCE

TRACK

REVERSE

FOWARD

123

4

876

5

PPI

MAR KET

ING DPT

Trk 1

PSC-221

Phase Shift Control

PAR-245

Preamp/Equalizer

Rear OutputFront Output

Precision

Power

PSC-221

M

ade in

U

SA

Power

Phase Shift Control

Left Phase

o

-ø

Right Phase

o

-ø

Precision

Power

Input

Ground

Remote

Power

L

R

in •

Non-inverted /

Active

out •

Inverted /

ByPass

L

ByPass

L

Invert

R

ByPass

R

Invert

600

100

220

600

100

220

Volume

Fader

Defeat

Sub Low Low-Mid

High-Mid Treble

PAR-245

Power

In-Clip

+

++++

R

F

Precision

Power

PAR-245

Made in USA

PowerLED Select

Input

O

utput

Output

Rear

Front

R

L

Input Sensitivity

1

3

2

4

Sub Low Low-Mid Treble

Frequency Adjust

High-Mid

R

L

R

L

Source Unit

POWER

CLASS™

Amplifier

High Pass at 90 Hz

Subwoofer

Subwoofer

POWER

CLASS™

Amplifier

Low Pass at 90 Hz

BA CK TO CONTENTS

18

SYSTEM THREE

eject

VOLUME

BASS

TREBLE

RIGHT

LEFT

BALANCE

TRACK

REVERSE

FOWARD

123

4

876

5

PPI

MAR KET

ING DPT

Trk 1

PSC-221

Phase Shift Control

PAR-245

Preamp/Equalizer

Rear OutputFront Output

Precision

Power

PSC-221

Made in

USA

Power

Phase Shift Control

Left Phase

o

-ø

Right Phase

o

-ø

Precision

Power

Input

Ground

Remote

Power

L

R

in •

Non-inverted /

Active

out •

Inverted /

ByPass

L

ByPass

L

Invert

R

ByPass

R

Invert

600

100

220

600

100

220

Volume

Fader

Defeat

Sub Low Low-Mid

High-Mid Treble

PAR-245

Power

In-Clip

+

++++

R

F

Precision

Power

PAR-245

Made in USA

Pow

er

LED Select

Input

O

utput

Output

R
ear

Front

R

L

Input Sensitivity

1

3

2

4

Sub Low Low-Mid Treble

Frequency Adjust

High-Mid

R

L

R

L

Source Unit

Passive

Crossover

Passive

Crossover

Tweeter

Tweeter

MidRange

MidRange

POWER

CLASS™

Four Channel Amplifier

Subwoofer

Subwoofer

POWER

CLASS™

Two ChannelAmplifier

Low Pass

Coax

Coax

POWER

CLASS™

Two ChannelAmplifier

Mid BassMid Bass

Low Pass

Low Pass

High PassHigh Pass

DEQ-230

Third Octave EQ

R

L

Ground

Remote

Power

Output

stereo • out

mono • in

Input

R

L

D

e

fe

a

t

10

K

H

z

+12db-12db

5

K

H

z

+12db-12db

2

.5 K

H

z

+12db-12db

1.27 K

H

z

+12db-12db

6

35 H

z

+12db-12db

3

20

H

z

+12db-12db

15

6 H

z

+12db-12db

8

0 H

z

+12db-12db

40 H

z

+12db-12db

20

K

H

z

+12db-12db

E

Q

31.5 Hz

+12db-12db

8 KHz

+12db-12db

4 KHz

+12db-12db

2 KHz

+12db-12db

1 KHz

+12db-12db

500 Hz

+12db-12db

250 Hz

+12db-12db

126 Hz

+12db-12db

63 Hz

+12db-12db

16 KHz

+12db-12db

Power

Precision

Power

DEQ-230

Made in

USA

Third Octave Equalizer

6.4 KHz

+12db-12db

3.2 KHz

+12db-12db

1.6 KHz

+12db-12db

800 Hz

+12db-12db

400 Hz

+12db-12db

200 Hz

+12db-12db

100 Hz

+12db-12db

50 Hz

+12db-12db

25 Hz

+12db-12db

12.8 KHz

+12db-12db

BA CK TO CONTENTS

19

TROUBLE SHOOTING

ANY SOUND NOW?

NO

Check Power and Remote turn-on wire
for voltage. Make sure Ground wire is
secure.

YES

Check Input cables for signal by
connecting them to the next
component in line.

NO SOUND

YES

Problem is in the Equalizer. See your
local Authorized

PrecisionPo wer

Dealer

or call1-800-62

POWER

.

NO

Problem is elsewhere in the system.
Check head unit and amplifiers.

Is the LED lit?

SOUND IS NOW IN

OPPOSITE CHANNEL

Reverse RCA inputs.

SOUND IS NOW IN

OPPOSITE CHANNEL

Reverse RCAs at head unit.

SAME CHANNEL

Problem is in the Equalizer. See your
local Authorized

PrecisionPo wer

Dealer

or call 1-800-62

POWER

.

SOUND IS NOW IN

SAME CHANNEL

Problem is in the RCA cables.

OPPOSITE CHANNEL

Problem is in the head unit.

SAME CHANNEL

Problem is in the amplifier, speakers or
associated wiring of the silent channel.

SOUND IN ONE CHANNEL ONLY

Check Balance control.
Reverse left and right RCA outputs.

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20

BLOCK DIAGRAM

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WARRANTY

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

PrecisionPower’s

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

PrecisionPower’s

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 fac-

tory 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

PrecisionPower’ s

owner’s 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 RESUL TING 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 W ARRANTY: 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.

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