How many speakers can I hook up to a QSC amplifier in bridge mode.

Wow....what you have here is a total system design. I really feel you need to get a professional in your area to help you out. There has to be a buddy of yours that knows enough to help out. There are just way too many variables in this that are unanswered. Amp channels, amp output, speaker impedance, other equipment needing balanced or unbalanced, type of jacks, stereo/mono, length of runs, power requirements. It would take me hours to look up the specs of your equip, a couple hours to design and hours of questions back and forth. At best if you let me know where you are I may be able to set you up with someone local to your area.

Hello... I can help you with this question. Yes it is possible to do this, but you will have to use a 2 ohm stable mono block amplifier in order to do this. By connecting both positives together and both negatives together, you will be running a 2 ohm load. So if your amp is a monoblock amp, connections will be simple as tieing all the positives together and the negatives together and just hook to the amp. If you are using a 2 channel amplifier that is bridgeable, then you will need to series the subwoofers to an 8 ohm load and then bridge the amplifier to 1 channel. The way you series the subwoofers is take the positive wire in the box and hook to the positive on subwoofer #1. Take the negative wire in the box and hook to the negative on subwoofer #2. Then take a piece of wire and hook the negative from subwoofer #1 to the positive connector on subwoofer #2. Then hook the wires to the amplifier. To bridge the amplifier (if it is a 2 channel bridgeable) would be to use the left positive and the right negative, but check the amplifier for markings to confirm this. If you have any other questions, feel free to let me know and I will help you out! Hope this helps!!

20 year car audio/video installer
Bay manager

For QSC amps the GX series are not bridgeable. You will have to run one speaker to each channel.

If you have dual voice coils then these are the ways you can hook it up

sounds like you need a preamp. i would need more info to be sure. good luck

Hi,

There's a switch on the rear, put this in bridge mode.
Connect you speaker (not under 4 Ohm) on the two red outputs.
Here's your manual.
http://media.qscaudio.com/pdfs/mxusr.pdf

Good luck,
Gerard

Hello missywarden,

According to the specifications, the amp is capable of "tri-mode" operation, that is, running normal speakers on the individual channels while also powering a subwoofer in bridged mode.

Your sub needs to be a minimum of 4ohms and should be relatively efficient. I'd look for a sub that has an RMS power range of from about 75 watts up to a maximum of 250 watts.

The sub connects to the leftmost speaker terminal (positive - right channel) and the rightmost speaker terminal (negative - left channel).

It's not going to be a really loud subwoofer. The power is 360 watts RMS which will be shared by the normal speakers and subwoofer.

Hope this helps.

People talk alot of **** about Pyle amps, all I can say is that,
I have two PT-2000 & PT-1800 power amps that I have set in bridge mode, one for each speaker and they are powering two Altec-Lansing 18" inch subs, one amp per speaker, no hiss, line noise or anything and the system kicks. I tried the Pyles on a whim because I got tired the trouble I was having with the QSC and Crown power amps, could not go a year without having something go wrong always sending back to dealer for some kind of fix! So now I have 2, QSCs, 2 Crowns & 4 Pyles driving my system

if you have dual voice coils connect on each seporate sub negative left channel to possative right channel of the subwoofer same to other sub then conect the left possative and the right neggative to your box power terminal same to other sub then conect the two sub outs on your box left speaker positive to your positive left channel bridge then conect left speaker negative to the right speaker possative then connect your right speaker negative to your right channel negative brigdeg to your amp is single coil hook the box its self up the same way to your amp i have two dual voice cooil 12" hooked up to the same amp that way and it rocks without the power protecter turning on

This will depend on the amplifiers capabilities.

I will give 2 different scenarios.

#1 Stereo configuration

If the amplifier supports an RMS power output close to the RMS input power of the subwoofers then run the amplifier in stereo mode. For example 150 watts RMS X 4 channels driven at 20-20khz. (If you can provide a model # for the subs and the amp your looking at I can help you further with this decision.

Wiring for this is easy and simply involves matching the connectors for 2 of the channels (Front or Rear) to each of the subwoofers.

#2 Mono Bridged mode.

If the amplifier is lower power but mono bridgable you can bridge two Pairs of channels and power each of the subwoofers this way.

Generally speaking a 2 channel bridgable amplifier will be able to at least combine the wattage of each channel into a single monural channel and in many cases its actually higher.

So you would bridge the front 2 channels into a single bridged mode for one subwoofer. and then you could bridge the read 2 channels into another bridged mono channel for your other sub woofer.

For example if you had bridgable amplifier thats 50 watts RMS X 4 you coudl very likely (Generalization based on quality of amplifier) send 150 watts RMS to each subwoofer.

Again I would need to know what amp you're refering to to provide specific wiring instructions. Many Bridging amplifiers either have a single switch that will send them to bridged mode or you would use the positive + terminal from one channel and the negative - terminal from the other channel or a combination of both.