The other benefit of this connection is if you had more than two subwoofers, three or four let’s say, you can keep chaining them in this manner, going from the input on one to its output to the input on the next subwoofer out of its output to the input on the following subwoofer and so on. Connect the AC Power cord to the facility’s AC outlet. Almost all current mixers have balanced output jacks, again with XLR, TRS, or both connectors. The second option is the KW181 subwoofer. Page 10: Block Diagram Turn on all source devices (CD players, mixers, instruments), turn on subwoofer, then turn on the “top- boxes” ( K8.2, K10.2 and K12.2). Yes, you can crank the sub up more on the amp panel, but proper gain staging goes a … Replacements are available from QSC. I had a question on how the amp can hook up...at least i think that is what is was. Application Guide for Musicians and Bands 3 Build a Mix Using Factory Presets What is a Channel Preset? The GP212-sw is a high-performance, dual 12" subwoofer designed ground stacked use in the most demanding touring or installed concert applications GP212-sw 12” Subwoofer – QSC QSC Audio Products Homepage In some cases, you may find an RCA connector marked LFE (Low Frequency Effects) on a receiver or pre-amp; hooking up the "LFE" jacks usually only sends bass special effects of a 5.1- encoded movie to the subwoofer. WA N NG! It is only 14" (355.6mm) wide by 26" (660.4mm) tall, so it fits into some very tight spaces – especially when laid on its side and slid under a riser platform stage. Now you can hook up as many subs as you want. Most powered speakers have balanced XLR or TRS jacks, or both. The KW181 is a single 18" front-loaded / dual ported sub enclosure. You’ll run your volume much higher to get the volume. These are problematic in long runs, and are more susceptible to picking up noise and interference. If the QSC-supplied cord is lost or damaged, a standard 18-gauge IEC power cord may be used. The KSub is a double 12" band-pass sub enclosure. When people put a sub left and right and send the sub the L or R out only, you are denying yourself the subs full potential because of decreased input voltage. If the QSC- supplied cord is lost or damaged, a standard 18-gauge IEC power cord may be used. The level controls on your mixer may now be brought up. It’s possible (though rare) that your mixer only has unbalanced outputs. Specifications are subject to change without notice. 2 Calculated SPL at 1 m, speaker operating at rated RMS power with pink noise within specified frequency range 3 Maximum input power tested in accordance with IEC 268-5 recommendations, 50 Hz – 20 kHz band limiting, 6 dB signal crest factor. 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