Mackie HD1801 Owner's Manual - Page 9

Owner's Manual HD1801 18 -INCH HIGH DEFINITION POWERED SUBWOOFER INPUTS A B 3 OUTPUTS A FULL RANGE B 5 A HIGH PASS B 4 10 SETTINGS POWER LIGHT ON 7 THERMAL SIG/ LIMIT 9 POLARITY INVERT 6 - 6dB +6dB LEVEL 8 3. INPUTS These female XLR connectors accept balanced line-level signals from a mixing console or other signal source. If you are connecting a single subwoofer output, or LFE (low-frequency effects) output to the subwoofer, you may use either the A or B input connector. CAUTION: NEVER connect the output of an amplifier directly to the input of the subwoofer. This could damage the input circuitry of the powered subwoofer. 4. HIGH PASS OUTPUTS 5. FULL RANGE OUTPUTS Balanced XLR male connectors are provided for the line-level A and B full-range outputs. Connect these outputs to the inputs of another powered subwoofer, main powered loudspeakers, or to an amplifier powering passive loudspeakers. The signal at these outputs is a direct copy of the input signals. These outputs allow you to daisy-chain multiple subwoofers, and/or send the full-range signals to the main loudspeakers. The level control and polarity switch have no effect on the full-range outputs. The outputs are separate and maintain the stereo separation of the input signals. Balanced XLR male connectors are provided for the line-level A and B high-pass outputs. The subwoofer's internal active crossover splits the input signals into two frequency bands. The low frequency range below 100 Hz goes to the internal amplifier that powers the subwoofer. The frequency range above 100 Hz is sent to these line-level output jacks. 6. POLARITY INVERT Press this switch in to invert subwoofer polarity. Depending on the placement of the HD1801 subwoofer relative to the full-range speakers, you may get a better low-frequency response if you invert the polarity of the subwoofer's signal. See page 11 for more information. Connect these outputs to the inputs of your main powered loudspeakers, or to the inputs of the amplifier 7. POWER LIGHT ON SERIAL NUMBER REVISION AVIS: RISQUE DE CHOC ELECTRIQUE - NE PAS OUVRIR powering the main loudspeakers. In this way, the main Press this WARNING: TO REDUCETHE RISK OF FIRE OR ELECTRIC SHOCK,DO NOT EXPOSETHIS EQUIPMENTTO RAIN OR switch in to turn on the front panel power MOISTURE. DO NOT REMOVE COVER. NO USER SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED PERSONNEL. loudspeakers will play the range above 100 Hz. If the LED if a visual indicator is preferred. The LED next to main loudspeakers have good low-frequency response, the switch will light as a reminder. then you may decide to use the full-range outputs (5) instead. If this switch is out, and the HD1801 is turned on, the LED on the front of the cabinet will not light, nor will The level control and polarity switch have no effect the LED next to the switch. on the high-pass outputs. The outputs are separate and maintain the stereo separation of the input signals. 8. LEVEL POWER ON This controls the overall signal level at the input to the built-in power amplifier. It ranges from -6 dB to +6 dB of gain. The center detent is 0 dB (unity gain). This control has no effect on the level of the High Pass Outputs (4) or the Full Range Outputs (5). Owner's Manual 9