User manual BOSS BASS800

[. . . ] · BASS800 amplified subwoofer · Remote subwoofer level control · Remote subwoofer control cable ·High level input harness/wire · Mounting hardware Features Your new BASS800 Powered Subwoofer features the following: · MOSFET PWM (Pulse Width Modulated) Power Supply · Thermal, overload and speaker short protection · Soft turn-on circuit · Remote turn-on/turn-off circuit · Variable input gain control · Variable low pass crossover · Variable bass boost (0 to +18dB) · Variable phase shift (0 to 180º) · Nickel plated RCA low level and high level inputs · LED power/ protection indicator · Remote subwoofer level control BASS800 Amplified Subwoofer User's Manual - page 2 General precautions Before installing and using your new amplified subwoofer, please become familiar with all the information contained in this manual. Please keep this manual in a safe place for future reference. · Do not open or attempt to repair this unit yourself. Dangerous high voltages are present which may result in electric shock. [. . . ] Connect an empty fuse holder within 18" (45 cm) of the car battery, and run 8 gauge (or heavier) cable from this fuse to the amplifier location. Then connect the fuse holder to the "BATT+" connection on the amplifier. Fuses Power fuses protect both the amplifier and the electrical system of your car from fault conditions. If you must replace a fuse in your BASS800 powered subwoofer, use a fuse of exactly the same type and rating. Using a different type or rating of fuse may result in damage to your amp or vehicle or cause a fire. BASS800 Amplified Subwoofer User's Manual - page 4 6. Connect all line inputs and outputs (if used) using high-quality cables. Connect all speakers, following the diagrams in this manual. Be sure to observe proper polarity to avoid audio phase problems. Insert fuse(s) into the battery fuse holder(s). Recheck all connections before powering up the subwoofer. Set all level controls to minimum position, and set all crossover controls/switches to the desired frequency points. Power up the head unit and the subwoofer. Then set the volume control on the head unit to about 3/4 volume, and adjust the subwoofer's input level controls to just below the level of distortion. Further fine tuning of the various controls may be necessary to obtain best results. Don't misuse the level control! Do not mistake the input level control for a volume control!It is designed ONLY to match the output level of your audio source to the input level of your subwoofer. Do not adjust this input level to maximum unless your input level requires it. Ignoring these instructions will result in an input overload to the amplifier in the subwoofer, and excessive audio distortion. It can also cause the protection circuit to engage. BASS800 Amplified Subwoofer User's Manual - page 5 Controls and features 1 2 3 4 5 POWER CONNECTIONS PHASE SHIFT LOW PASS FILTER BASS BOOST INPUT GAIN GROUND 0 180º 50Hz 150Hz 0 +12dB MIN MAX REMOTE AMPLIFIED SUBWOOFER +12V REMOTE LEVEL CONTROL INPUTS HIGH LEVEL POWER STATUS GREEN = ON RED = PROTECTION LINE LEVEL L R FUSE 6 7 8 9 10 1 POWER TERMINALS 2 PHASE SHIFT Use this switch to help compensate for time alignment problems in the system. Such problems usually result from having the subwoofer at a different distance from the listener than the other speakers in the system. 4 BASS BOOST The bass boost feature will increase the sound level in the bass frequencies. 5 INPUT GAIN CONTROL After you have installed your system, turn this control to minimum Turn the head unit on (and the subwoofer will turn on via the remote connection). Turn the head unit volume to about 2/3 full level. Slowly turn up the subwoofer input gain control until you hear a small amount of distortion. Then reduce the level until the distortion is completely gone. Leave the control at this setting. 3 LOW PASS FILTER This control permits you define the frequency range you want the subwoofer amplifier to receive. [. . . ] Check that the minimum speaker impedance for the amp model is correct. Check that there is good air circulation around the amp. In some applications, it may be necessary to add and external cooling fan. This is usually caused by poor quality RCA cables, which can pick up radiated noise. [. . . ]