Page 1: Table Of Contents
Congratulations Features and Specifications Operation Installation Wiring CONTENTS (click on a topic to view) Wiring Inputs / Outputs Block Diagram Troubleshooting Warranty...
Page 2 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 sound quality, reliability, and value.
Page 3: Features And Specifications
FEATURES / SPECIFICATIONS 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 PrecisionPower Dealer S p e c i f i c a t i o n s...
Page 4: 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 .
Page 5: Installation / Mounting
INSTALLATION / MOUNTING Mounting To prevent damage to the DAC while driving, mount it in a secure place. Choosing the appropriate location will depend upon your vehicle and the complexity of your system design. Keep in mind that the output of the DAC-348 must go to a preamp to control the volume of the digital source.
Page 6: Wiring
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 from the power wire to avoid radiated noise. Avoid sharp edges that could chafe through the insulation.
Page 7 WIRING The next step is to connect the Power, Ground, and Remote wires to your DAC-348 . 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.
Page 8: Inputs / Outputs
Connect the Digital output from your source to the appropriate Digital Input connector (coax or Toslink optical). After connecting Power, Ground, and Remote wires, plug in the Powerlock connector here. 5 amp Fuse Parallel Analog Outputs to Preamp. Analog Inputs from source unit. Sync LED - Red light indicates digital signal being processed.
Page 9: Block Diagram
BLOCK DIAGRAM Smart Input Selector BACK TO CONTENTS...
Page 10: Troubleshooting
NO SOUND Unplug the Digital Input cable from the DAC-348 Problem is in the DAC. See your local Authorized PrecisionPower Dealer or call 1-800-62 POWER . Problem is in the DAC. See your local Authorized PrecisionPower Dealer or call 1-800-62 POWER . SOUND IN ONE CHANNEL ONLY SAME CHANNEL Problem is in the RCA cables...
Page 11 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.