® XA2125 XA275 XA250 Amplifier Installation and Operation Introduction Thank you for purchasing a Jensen amplifier. The XA series amplifiers offer extreme value and performance. Proper installation is essential for optimal performance and long-term reliability. Please read through this manual first to familiarize yourself with your amplifier and its functions. Warranty Service If your Jensen amplifier should ever require service, you will need to have the original dated receipt.
® XA2125, XA275, XA250 Contents Features ......................................... 3 Installation ..................................... 3 Before You Begin ......................................... 3 Disconnect Battery ........................................ 3 Supplies and Tools Needed .......................... 3 Location and Mounting .................................. 4 Routing Wires................................................ 4 Wiring ............................................. 5 Power .........
® XA2125, XA275, XA250 Features XA Series 2-channel amplifiers include: • Easy access top mounted controls • Continuously variable high pass/low pass crossover • 40Hz – 400Hz crossover frequency range • Crossover mode selector switch • Continuously variable bass boost, centered at 45Hz • Input level control • Remote level control (XA2125) • Traditional input circuitry – low and high level inputs • Pre-amp output for installation flexibility • Dual status LED diagnostic indicator • Thermal, short circuit
® XA2125, XA275, XA250 Location and Mounting The XA amplifier’s compact design allows greater flexibility in mounting. It can be mounted under a seat or in the trunk. When selecting a location, remember that amplifiers generate heat. Select a location where air can circulate around the amplifier. Do not cover the amplifier with carpets or enclose it behind interior trim panels. Do not mount the amplifier in an inverted or upside down configuration.
® XA2125, XA275, XA250 Wiring Power GND REM BRIDGE + 12V R R– L L FUSE Remote Terminal (REM) Power Terminal (+12V) Connect the power antenna/amplifier turn-on lead from the receiver to the AMPLIFIER REMOTE terminal. Connect directly to the vehicle battery+ terminal with 8 gauge wire (minimum).
® XA2125, XA275, XA250 Inputs, RCA Output, Remote Level Control XA2125 INPUT L XA275 REMOTE BASS L R LOW INPUT L OUTPUT HI LEVEL OUTPUT HI INPUT R R R L XA250 Input Wiring Low Level Input (RCA Input) Low level (RCA) input is preferred for best performance. Most trunk/hatchback installations will require a 15-20 foot RCA cable. While pickup trucks and under-seat mounting will require a 6-10 foot RCA cable. Connect an RCA cable from your receiver to the RCA input on your amplifier.
® XA2125, XA275, XA250 Remote Level Control (XA2125) PWR MIN MAX REMOTE BASS Remote level control allows the input level to be adjusted from an alternate location. It can be mounted under-dash or in-dash. When the amplifier is used to drive subwoofers, and the low pass crossover is activated, the remote level control can be used as a “remote bass level control”. This enables you to control the bass level, independent from the rest of the system.
® XA2125, XA275, XA250 Bridged Subwoofer 2 Speakers + Subwoofer X-OVER LPF FULL HPF X-OVER LPF FULL HPF BRIDGE BRIDGE R R– L R L 2Ω R– L L 4Ω minimum 2Ω 4Ω 2Ω = 2Ω minimum 4Ω = 4Ω minimum Important When running a subwoofer and two full-range speakers together (Tri-mode operation), high and low pass filters must be used. Failure to install these filters may damage your amp and/ or speakers. Freq.
® XA2125, XA275, XA250 Indicators and Controls BASS 0dB 12dB L-CH X R-CH X LEVEL 40Hz 400Hz 40Hz 400Hz MIN X-OVER LPF FULL HPF Crossover (X-OVER) Adjust the crossover to accommodate your chosen installation method. • LPF–(low pass filter) Select this filter when the amplifier will be driving woofers or subwoofers. X-OVER • FULL–Crossover is not active, LPF FULL amplifier is in "full range" HPF mode.
® XA2125, XA275, XA250 Testing Before you finish the installation, you should do the following tests to make sure the wiring is correct and everything is operating properly. Test Speaker Connections Reconnect Battery When wiring is complete, reconnect the battery negative terminal. – + These tests make sure the speakers are connected right. If speakers don’t play at all, one (or both) speaker wires may be disconnected.
® XA2125, XA275, XA250 Troubleshooting Problem Possible Cause Corrective Action Amplifier does not operate (power LED not on) when vehicle and radio are on No power to +12V terminal Repair wire or connections. No power to remote wire with radio on Check connections to radio with test light. Fuse blown Check fuse. Radio volume needs to be turned up too high for amp to work Input level control adjusted too low Adjust input level control.
® XA2125, XA275, XA250 Specifications XA Series 2-Channel Amplifiers Frequency Response ....................................................................................... 20 Hz-20 kHz ± 0.5 dB Signal to Noise Ratio @ Rated Power ....................................................................................>100 dB Channel Separation @ Ref. Power ............................................................................... >65 dB, 1 kHz THD & IMD @ Ref. Power into 2 ohms .......................
® XA2125, XA275, XA250 Limited One Year Warranty– USA and Canada Length of Warranty. This warranty from Recoton Mobile Electronics shall be in effect for a period of one year from the date of the first consumer purchase. Persons Protected. This warranty will be enforceable by the original owner during the warranty period so long as proof of date of purchase from an authorized Jensen dealer is presented whenever warranty service is required. What is Covered.
