Sub quit working, where do I find new board/amp/crossover panel
Sub stopped working, and I've tried to get audio several different ways, and come to the conclusion that the board is bad, or something on the board is bad. It powers up and I can bypass everything and go directly to the sub which works fine by itself but no amp/crossover. Any Idea where i can get parts.
I have the same problem with mine and since Acoustic Research went out of business, I too have been looking for a solution. I may have found an alternative to throwing away this really nice speaker. I found a company on the web that appears to sell an amp that may fit nicely into this speaker enclosure for $99.00. Check it out...http://www.partsexpress.com/pe/showdetl.cfm?DID=7&PartNumber=300-805
UPDATE Feb-16-2016: This Amp is still going strong since 2012 when I replaced it. The price has gone up to 139.00, but may still be worth it to replace a bad one given the cost of Sub's today.
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The easiest thing to do is add an outboard crossover; something like a Rane AC 22S. Set the mode for stereo 2-way & mono sub out. L & R mains out from the mixer to the crossover, mono sub out to the sub and high out's to the full-range speakers.
Line outs Left and Right from mixer to power amp Left and Right inputs, Power amp outs to Subs(if they have passive crossovers built in check specs on subs). From Subs then to Main spkrs. Make sure power amp is set in stereo mode using this way.
Alternative: You will need at least a 2-way stereo crossover unit inline after mixer and before power amps if the subs don't have a built in passive crossover. Most of them do have passive crossovers in the subs these days. Then separate amps or one channel would drive the subs and the other the main speakers. True stereo would require at least a 2 way crossover and two stereo power amps if hooking them up this way.
There is another option as is common with many sub setups. Send the signal to the mains using L/R outputs from mixer and a separate Mono output to the subs only. Putting only bass/kick and low frequency outputs in this send would help too.
You will need to carefully read all your manuals and proceed step by step Here is the first one to look at:http://www.behringer.com/EN/Products/CX3400.aspx This crossover goes between the output of your board and the input of whatever power amps you are using. It has sections describing each setup and by what you have said, if you have enough amps you would probably need to run stereo 3 way which is described on pages 9,10 and 11. This would allow you to run a mono sub out setup. The grey areas are the connections and controls you use. Make absolutely sure your cables match the ones in the diagrams and read and heed carefully all the warnings. As far as your E.Q. and your Compressor they are separate topics as they are signal processors and are hooked up in the signal chain of your mixing board. They condition the input signals. Your crossover belongs in the output stage which as mentioned before is from the output of your board to the input of the crossover then from the outputs of your crossover to the inputs of your amplifiers and then on to your speaker systems. Try to find a friendly person on your end who does sound on a regular basis and has experience setting up and troubleshooting connection problems who wouldn't mind trading some advice for whatever help you could offer them. You have some good gear there and although there are people who will give Behringer gear a bad rap, I have never experienced any problems with mine. You absolutely have to understand all your gear inside out and not try to make it do something it is not designed to do. You also have to make sure you understand the differences between balanced and unbalanced cable connections and only use good quality cables designed for each application. If you're good at soldering and understand all the theory and want to do the work you can probably buy in bulk and customize everything to your own purpose. Enjoy your new equipment.
ok, connect the amp positive to the positive end of one sub coil, take the negative of that coil, and run it to the positive of the second sub coil, then run the negative out of the second sub coil to the negative of the amp.
My recommendation would be to double check the back of you crossover and make sure everything is hooked up correctly. If you crossover is convertible like my DBX223 xl is from Stero to Mono and Three way to two way the connections on the back changes roles.