User manual BOSS BASS1200

[. . . ] · BASS1200 amplified subwoofer · Remote subwoofer level control · Remote subwoofer control cable ·HIgh level input harness/wire · Mounting hardware Features Your new BASS1200 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 subsonic filter · Variable bass boost (0 to +12dB) · Variable phase shift (0 to 180º) · Nickel plated RCA low level and high level inputs · LED power/ protection indicator · Remote subwoofer level control BASS1200 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. [. . . ] Then attach the supplied double adhesive tape, and put the subwoofer in the place and press down on it securely. BASS1200 Amplified Subwoofer User's Manual - page 5 5. 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 a 30A fuse into the battery fuse holder. 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. BASS1200 Amplified Subwoofer User's Manual - page 6 Front panel controls and features 1 REMOTE LEVEL CONTROL INPUT GAIN SUBSONIC FILTER BASS BOOST LOW PASS FILTER PHASE SHIFT 0º 180º POWER STATUS AUTO TURN-ON OFF ON GREEN = ON RED = PROTECTION MIN MAX 20Hz 50Hz 0 +12dB 50Hz 150Hz BASS SU BWOOF ER AMPLIFIED 2 3 4 5 6 7 8 1 REMOTE LEVEL CONTROL PORT Attach the included remote level control to control the volume level of the subwoofer independently. 6 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. 2 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. 7 AUTO TURN-ON SWITCH Placing this switch in the ON position will cause the BASS1200 to turn on as soon as you turn on the head unit in your car. If you wish to turn it on manually, leave this switch in the OFF position. 8 POWER STATUS LED This bi-color LED glows green when power is on and no problems are present. If one of the protection circuits comes on, it will change to red. 3 SUBSONIC FILTER Use this control to filter out low frequency noise and rumble. 4 BASS BOOST The bass boost feature will increase the sound level in the bass frequencies. 5 LOW PASS FILTER This control permits you define the frequency range you want the subwoofer amplifier to receive. The subwoofer will reproduce all sound BELOW the frequency you set. [. . . ] 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. Use only the best quality cables, and route them away from power cables. [. . . ]