User manual DUAL XPA2100

[. . . ] · The amplifier can be mounted horizontal (recommended) or vertical. For optimum performance, make sure to provide at least 1" of space to around all sides. Do not mount the amplifier under carpets or where airflow is restricted. · Do not install the amplifier where it may be exposed to moisture. [. . . ] A suitable fuse MUST be installed on the +12V lead within 18" of the battery for protection of the vehicle's electrical system. Fuse Rating When replacing fuses, make sure new fuse is the correct type and amperage. Using an incorrect fuse could damage the amplifier. Power/Ground Wire Size For optimum performance, use only the wire size listed below or larger. Make sure to use the same size power and ground wire. XPA2100 25 amp ATO x 1 XPA4100 25 amp ATO x 2 XPA6100 20 amp ATO x 2 XPA2100 10 gauge XPA4100 8 gauge XPA6100 8 gauge 6 XPA SERIES INSTALLATION Amplifier Connections Speaker Connections Connect speaker wires observing polarity. The minimum impedance load for the XPA2100 and XPA4100 is 2 ohms stereo and 4 ohms bridged. The minimum impedance load for the XPA6100 is 2 ohms. Use of loads lower than these is not recommended and may cause amplifier damage. The XPA2100 and XPA4100 can be wired for stereo, bridged or stereo/bridged simultaneous operation. 2 Speakers (stereo) Subwoofer (mono) Typical Stereo Wiring (2 ohms minimum) Typical Bridged Wiring (4 ohms minimum) XPA2100 speaker connections shown Input Signal Connections Low Level Input (RCA) Low level (RCA) input signal is preferred for best performance. Typical trunk-mount amplifier installations require a 17-20 foot RCA cable. Most trucks and under-seat applications require a 6-9 foot RCA cable. Using twisted pair construction RCA cables will minimize noise. High Level Input (Speaker Wire) High level inputs should only be used when RCA outputs are not available from the head unit. Connect the head unit speaker outputs to the high level input connector as shown below. The black wire (signal reference ground) may or may not require a connection to chassis ground - depending on your particular installation. CAUTION Do not use both low and high level inputs at the same time - connect only one or the other. 7 XPA SERIES OPERATION Configuration/Setup Input level Control The input level control (gain) is used to obtain the best possible match between the head unit audio output and the amplifier input. Begin by turning the input level control fully counterclockwise. Next, turn up the head unit volume control around 3/4 of the way up. Adjust the input level control clockwise until audible distortion is heard, then slightly counterclockwise to provide the best match. Select 2 CH mode if the head unit only has 1 pair of RCA outputs. Plug the RCA's from the head unit into channels 1/2 or 3/4. All 4 amplifier inputs will receive a signal. NOTE: There is no fader function when using 2 CH mode. [. . . ] A slight adjustment of any custom controls discussed in your instruction booklet may save you a service call. If you require service during the warranty period, you must carefully pack the product (preferably in the original package) and ship it by prepaid transportation with proof of the purchase date from the retailer to the Return Center address listed below. Please describe your problem in writing and include your name, a return UPS shipping address (P. O. Box not acceptable), and a daytime phone number with your shipment. [. . . ]