User manual AUDIOVOX 1286685

[. . . ] MODELS AVW110, AVW111, AVW121 and AVW122 HIGH PERFORMANCE SUBWOOFERS OWNERS MANUAL Released 2-25-03 Congratulations on your purchase of the Rampage High Performance Subwoofer. [. . . ] 1) if your amplifier is rated to drive 2 Ohms in bridged or one-channel operation. If each of two dual-voice coil 4-Ohm woofers are connected in parallel and then wired to 2 each other in parallel, a 1-Ohm monaural output would result (See Fig. On the other hand, if your amplifier is rated for 4-Ohm operation in bridged or one-channel operation, series-connect the woofer voice coils (See Fig. If the amplifier is rated for 8 Ohms, interconnect the voice coils of the woofer in series as shown to obtain an 8-Ohm monaural output (See Fig. The same applies for parallel wiring of a single, dual-voice coil 6-Ohm woofer, in which a total impedance load of 3 Ohms will be seen at the amplifier. SERIES/PARALLEL STEREO CONNECTION Series wiring of each of two, dual voice-coil 4-Ohm woofers will result in a total impedance load of 8 Ohms at each channel of the amplifier (See Fig. Otherwise, connect one woofer to each channel for 4-Ohm stereo operation (See Fig. 6), or two parallel-wired woofers (one-per-channel) for 2-Ohm stereo operation (See Fig. 7). The same applies for series wiring of a single, dual-voice coil 6-Ohm woofer, in which a total impedance load of 12 Ohms will be seen at the amplifier. 3 INSTALLATION RECOMMENDATIONS To realize the utmost in sound reproduction from your subwoofer(s), follow these installation recommendations: Use a quality large gauge wire to connect your subwoofer to the amplifier Use a subwoofer crossover to remove unwanted higher frequencies Position the enclosure in the rear of the vehicle with the subwoofer facing rearward to improve bass response and avoid cancellation of audio frequencies ENCLOSURE CONSTRUCTION RECOMMENDATIONS To enhance subwoofer performance, the following general recommendations should be addressed when constructing the speaker enclosure: Use 3/4" MDF for your construction material Glue all joint seams Screw or nail all joints tight Brace all walls DESIGNING AND BUILDING YOUR SPEAKER ENCLOSURE The following parameters are offered to assist you in designing your own enclosure. [. . . ] Ft) Vented to (Hz) Port Diameter (") Port Length (") Number of Ports SQUARE PORT INFO Port Area (Sq/In) Port Length (") 7 8. 5 12 11. 5 1. 5 34 3 8. 5 1 2 34 4 11. 5 1 0. 35 0. 75 0. 5 1. 0 AVW110 0. 35 0. 75 AVW122 0. 75 1. 25 1. 25 34 3 7. 5 1 2. 25 32 4 12 1 7 7. 5 12 12 © 2003 Audiovox Electronics Corporation, Hauppauge, NY 11788 6 128-6685 [. . . ]