Precision Power DAC348 User Manual

TM

CONTENTS

(click on a topic to view)

Congratulations Wiring

Features and Specifications Inputs / Outputs

Operation Block Diagram

Installation Troubleshooting

Wiring Warranty

DAC348 Digital to Analog Converter OWNERS MANUAL POWER CLASS

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

PrecisionPower

TM

performance,

product reflects

we

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

PrecisionPower

PrecisionPower

PrecisionPower

dealer about obtaining any warranty

.(See Warranty insde 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

BA CK TO CONTENTS

PWM Power Supply
True 24-bit Digital Signal Processing
Class "A" Analog Stages
Direct-Coupled Analog Circuitry
Dual RCA Outputs
Analog Pass-Through
Smart Input Selection
Gold Plated RCA Input and Output Connectors
Optical and Coax Digital Inputs
Completely Designed And Handcrafted In The USA
Three Year Warranty when installed by an

Authorized

Specifications

FEATURES / SPECIFICATIONS

PrecisionPower

Dealer

Oversampling 8 fs
Frequency Response: 5 Hz - 20 kHz ±0.2dB
Total Harmonic Distortion: <0.01 %
Channel Separation >90dB
Digital Inputs : Coaxial and Toslink Optical
Supply Voltage 11 - 15 volts
Maximum Output (10kΩ Load) 4 VRMS
Output Impedance 30 ohms
Dimensions 5.125" W

13.11" L

1.750" H

1

BA CK TO CONTENTS

OPERATION

PrecisionPower's DAC-348

processes the digital signal directly from
the CD player, changer or other digital source. All digital to analog
conversion as well as the subsequent filtering and analog treatment
of the signal by the stock source unit is replaced by the superior digital
signal processing, digital to analog conversion and fully discrete Class
A analog circuitry of the

DAC-348

.
Because most digital head units are in fact combined with analog AM/
FM and Cassette players,

PrecisionPower

engineers have included
analog inputs as well as a Smart Input Selector that monitors the
Digital inputs and automatically chooses the appropriate source. To
take advantage of this feature you must connect both the Digital
(coaxial or optical) and the analog (RCA) outputs to the

DAC-348

.

As you have now bypassed the stock circuitry , the volume control on
your head unit will no longer affect the digital signal. You will need to
use a preamp or line driver (such as the

PAR-245

) as the master

volume control for your system. Refer to the diagram below.

System Diagram

Source Unit

eject

123

4

Trk 1

5

876

BASS

TREBLE

MAR KET

PPI

BALANCE

VOLUME

LEFT

ING DPT

TRACK

RIGHT

FOWARD

REVERSE

Analog RCA

Digital

Coaxial RCA

Or Optical

DAC-348

Digital to Analog

Convertor

Precision

PAR-245

Volume

Power

F

In-Clip

R

Fader

Defeat

PAR-245

Preamp/Equalizer

POWER

2

Power

Sub Low Low-Mid

Input Sensitivity

2

3

4

Sub Low Low-Mid

High-Mid Treble

R

Input

L

1

High-Mid

Made in USA

++++

+

PAR-245

CLASS™

R

Rear

Output

L

Frequency Adjust

Treble

R

Front

O

utput

L

PowerLED Select

Rear OutputFront Output

Amplifier

BA CK TO CONTENTS