Page 2 - Amplifier Location; Installation; Disconnect Battery; Professional Tip; Before You Begin Installation; Features
2 ® LXA300 Amplifier Location The LXA300 amplifier’s compact designallows greater flexibility in mounting. It can bemounted under a seat or in the trunk. When selecting a location, remember thatamplifiers generate heat. Select a locationwhere air can circulate around the amplifier.Do not cover the L...
Page 3 - Supplies and Tools Needed; Routing Wires
3 ® LXA300 Supplies and Tools Needed Supplies: • Speaker wire (12 gauge for subwoofers, 16-18 gauge for other speakers) • Sheet metal type screws for mounting amplifier• Electrical tape• Solderless crimp connectors• 1/2" thick plywood or particle board to mount amplifier on Tools: • Flat and Phi...
Page 4 - Wiring; Power and Outputs; Fuses
4 ® LXA300 Wiring Power and Outputs Remote Terminal (RMT +12V) Power Terminal (BATT +12V) Connect directly to the vehicle battery+terminal with 8 gauge wire (minimum). Ground Terminal (GND) Connect to a good chassis ground. The groundconnection should be to clean, unpainted metalto provide a good el...
Page 5 - Inputs and Controls; Input Wiring; Power Light
5 ® LXA300 Inputs and Controls Input Wiring ImportantUse only the low level or high level input, donot use both at one time. Low Level Input Use a pair of shielded stereo audio cables withRCA type jacks. Most trunk-mount amplifierinstallations require 20-foot RCA cables. Mostunder-seat and pickup tr...
Page 6 - Bass Boost
6 ® LXA300 Adjust the crossover to accommodate yourchosen installation method. Use LPF and HPF to adjust from50 to 250Hz. When using your Jensen amplifierto run a subwoofer and two full-range speakers (known as Tri-mode or three channel operation)you will need to purchase separatehigh and low pass c...
Page 7 - Speaker Wiring
7 ® LXA300 Speaker Wiring 2 Subwoofers 2 Speakers L + L – R – R + RCA Cables 2/4 Ω 2/4 Ω LPF FULL HPF X-OVER 2/4 Ω 2/4 Ω RCA Cables L + L – R – R + LPF FULL HPF X-OVER
Page 9 - Test Power Wiring; Testing; Test Speaker Connections; Reconnect Battery
9 ® LXA300 Test Power Wiring 1. Turn on the receiver but do not turn up the volume. The amplifier power lightshould come on. If not, check theRMT and +12V wires. 2. Turn up the receiver volume slightly. All speakers should operate. If not, checkwiring connections at amplifier andspeakers. ✓ Testing ...
Page 11 - Troubleshooting
11 ® LXA300 Troubleshooting Problem Possible Cause Corrective Action Amplifier does not operate (power LED not on) whenvehicle and radio are on Radio volume needs to be turned up too high for amp to work Radio volume is too sensitive Sound from only one speaker Sound distorted Blows fuses Alternator...
Page 12 - Specifications; Limited One Year Warranty–USA and Canada
Specifications LXA300 Amplifier Power output @ 14.4 VDC, 20-20 kHz ............ (4 ohms) 75 Watts per channel RMS, < 00.08% THD (2 ohms) 100 Watts per channel RMS, < 00.1% THD (4 ohms) bridged 200 Watts per channel RMS, < 00.1% THD Frequency Response ...........................................