User manual BOSS GM1011G

[. . . ] set the control to any value between 0dB and 18dB, according to your preference. PHASE Control: Use this switch to reverse the phase of SBP10AMP/ / SBP12AMP's output with respect to its input. NOTE: Depending on SBP10AMP / SBP12AMP's orientation and location in a vehicle, reversing the phase may (or may not) increase or decrease the amount of perceived upper bass being reproduced. [. . . ] POWER LED: This indicator will glow when SBP10AMP / SBP12AMP is operational. SPECIFICATIONS Amplifier Power: Frequency Response: Fuse: Max. Current Draw: Idle Current Draw: Input Sensitivity: SBP10AMP (700W MAX OUTPUT) SBP12AMP (800W MAX OUTPUT) 20Hz to 200Hz 15A 15A < 500mA 100mV to 2V Line-level input 0. 4V to 8V High-level input 50Hz to 200Hz 12dB per octave 0dB to 18dB @ 45Hz 14-1/4" x 16-1/4" x10-7/8" 16-1/16" x 18-1/4" x11-1/2" TROUBLESHOOTING PROBLEM: POWER LED is not lit. Check remote voltage, and power, ground or remote connections. PROBLEM: No output from SBP10AMP / SBP12AMP when head-unit fader control is set to front or rear. Verify all connections (see Applications, starting on page 3 & 4 ). Figure 4 Crossover Frequency: Crossover Slope: Bass Boost: Dimensions (SBP10AMP): (L x W x H) Dimensions (SBP12AMP): (L x W x H) PROBLEM: POWER LED is lit but there is no bass. -0 -180 PROBLEM: SBP10AMP / SBP12AMP turns on FREQ LINE INPUT PHASE 50 200 Hz CAUSES and SOLUTIONS: 1. Adjust head-unit fader control to feed audio signals to SBP10AMP / SBP12AMP. before head unit is completely on and produces a "thump" sound. CAUSE and SOLUTION: For speaker-level connections, SBP10AMP / SBP12AMP is receiving a false turn-on signal. On SBP10AMP / SBP12AMP's top panel, use the Remote (REM) connection. BASS HIGH LEVEL INPUT 0 18 dB GAIN REM GND +12V MIN MAX FUSE 15A PROBLEM: SBP10AMP / SBP12AMP sounds muddy or distorted. PROBLEM: 5 SBP10AMP / SBP12AMP's POWER CAUSES and SOLUTIONS: 1. Make sure the head unit is off and its volume control is set to minimum. On SBP10AMP / SBP12AMP's top panel, initially set all controls to their midpoint positions, as shown in Figure 5. Turn on the head unit and play a favorite music track that has substantial bass. set the head unit's volume control to 75 percent of the total output (approximately 3 o' clock on rotary controls). Adjust the GAIN control clockwise until distortion is heard and turn it back a little. 8. Adjust the BASS-BOOST control clockwise or counterclockwise to suit your taste. NOTE: In most cases, the above steps will provide satisfactory tuning. [. . . ] Adjust the BASS-BOOST control clockwise or counterclockwise to suit your taste. NOTE: In most cases, the above steps will provide satisfactory tuning. However, the actual process may require several readjustments of each control, since the settings will interact with each other. Figure 5 -0 -180 FREQ LINE INPUT PHASE 50 200 Hz 5. [. . . ]