User manual MACKIE TH-18S

[. . . ] TH-18s 18" Powered Subwoofer OWNER'S MANUAL Important Safety Instructions 1. Install in accordance with the manufacturer's instructions. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat. Do not defeat the safety purpose of the polarized or grounding-type plug. [. . . ] In this way, the main loudspeakers will play the range above 125 Hz. If the main loudspeakers have good low-frequency response, then you may decide to use the full-range outputs [4] instead. The level control and polarity switch have no effect on the high-pass outputs. The outputs are separate and maintain the stereo separation of the input signals. 4. 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. 6. POLARITY This switch reverses the polarity of the signal going into the subwoofer amplifier by 180°. It has no effect on the signal at the line-level outputs. There is no right or wrong setting for this switch. Listen to the overall blend of the subwoofer with the rest of the system and select the switch position that gives you the best sound for your audience. In fact, WARNING: your system may vary when positioned differently and AVIS: CHOC ELECTRIQUE NE PAS in RISQUE DESERIAL NUMBER OUVRIR Don't be afraid to experiment with alternate--venues. REVISION the position of the polarity switch. See page 11 for more information. TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE. REFER SERVICING TO QUALIFIED PERSONNEL. 9 POWER THERMAL 8 7 9 10 11 OL SIGNAL POWER OUTPUTS LEVEL A HIGH PASS B 5 - 6dB +6dB R 6 POL ARITY NORMAL INVERT A FULL RANGE B 4 A INPUTS ACTIVE SOUND REINFORCEMENT SUBW TH-18 B 3 7. LEVEL The LEVEL control adjusts the overall signal level at the input to the built-in power amplifier. It ranges from -6 dB to +6 dB (maximum gain), with unity gain at the center position (12 o'clock). The control has no effect on the level of the highpass outputs [5] or the full-range outputs [4]. 9. OL LED The OL (overload) indicator lights when the amplifier in the TH-18s is near the clipping point. [. . . ] Therefore, we reserve the right to change these specifications at any time without notice. "Mackie, " and the "Running Man" are registered trademarks of LOUD Technologies Inc. All other brand names mentioned are trademarks or registered trademarks of their respective holders, and are hereby acknowledged. All Rights Reserved. Input/Output Input Type: Female XLR Balanced differential (stereo left/right) 20 k balanced Male XLR Balanced (parallel with input) Male XLR Balanced ­6 dB to +6 dB Input Impedance: Full Range Output: High Pass Output: Level Control: Electronic Crossover Crossover Type: Crossover Frequency: 24 dB/oct. [. . . ]