OWNER’S MANUAL ® www.arcaudio.com XDi 850.5 Full Range Class D Amplifier Crossover and Gain Controls Introduction To access the crossover controls, mounting tabs or Finding a Suitable Location power connection on all XDi models you will need to remove the top cover. This is done by removing the 4 Supplying Power screws securing the logo plate using a 5/32”...
Your amplifier Does NOT make power. It converts power, or current, from your cars electrical system and turns it into a high power musical energy. If the amp can't get all the power it needs it will not produce its full output. Your ARC Audio ampli- fier will produce Full output for longer then other amps on the market today.
Running the Cables Carefully run the power and signal cables through the passenger compartment of the vehicle. Running power down one side and signal down the other is the preferred method. If this isn’t possible, keep them separated as much as possible. When running through any metal, always use a rubber grommet to prevent the power wire from shorting and to reduce the risk of fire.
Gain Because of the wide range of head unit output configurations all ARC Audio amplifiers have an adjustable input sensitivity or “Gain” . The gain is not a volume or a power limiting control like a throttle. It makes the amp more sensitive to input from the stereo.
Bass Boost This amp has an adjustable bass boost. The frequency is fixed at 45Hz. The level of the boost can be adjusted up to 12dB. Start with a small increase in the level control. then “sweep” the frequency up and down. Listen carefully for an improvement in the sound of the bass.
Installation Instructions Below is a very abbreviated set of installation instructions. This is not meant as a step by step procedure but is intended to give you a general idea of what is involved and which steps come first. Every installation will be different and may require reordering of these steps.
XDi 850.5 5 CHANNEL STEREO 4 CHANNEL HIGH PASS W/SUB Use this Set to Use this Set to Crossover HIGH Crossover HIGH for HIGH for HIGH Use this From Head Unit Subwoofer Output Crossover From Head Unit Rear RCA Output...
AUTO DETECT SPEAKER LEVEL INPUT AUTO SENSE The XDi 850.5 uses BTLD (Bridge Tied Load Detect) Turn-on circuit that offers a significant improvement in reliability over previous designs. Instead of relaying on the music to supply enough signal to turn the amplifier on. Robert Zeff’s design detects the IC (chip) used in the vast majority of stock head units and amplifiers.
ARC AUDIO retailer. Upon inspection by ARC AUDIO should services be necessary under this warranty for any reason due to manufacture defects ARC AUDIO will, at its sole discretion, repair or replace the defective product with new or similar conditioned product at no charge.
Need help?
Do you have a question about the XDi 850.5 and is the answer not in the manual?
Questions and answers