When I bridge the BAMF 2200/2 Power Acoustik amp it cuts off
I have 2 mtx thunder 8000 4ohm speakers hooked up to the amp and they work until I bridge the amp then the volt meter on the dash goes down and the amp cuts off
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655 Answers
Re:
Hello munchisfun,
I'd suspect that the amp is operating into too low of an impedance and going into protection.
The 2200/2 is not rated to drive a 2ohm load when bridged (most 2-channel amps aren't) and when you connect 2 4ohm subs in parallel, the load is 2ohms. I'd run one sub from each channel.
Wire ur sub down to 2 ohms and problem solved..go positive n negative on the speaker to the box then put the other plus and negative together..for dual voice coil...abra kadabra!!!
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The mtx thunder is a 4 channel amp. 4 channels can't be bridged to 1 speaker. You can only use one side of that amp to bridge your speaker. Unfortunately your now only using half your amp.
another couple of things is a bad ground wire. a sub going bad( causing a different ohm load then before) ive run into a bad fuse link in the amp before as well
If you don't know if the amp is bridgeable, then I wouldnt do it. It could already be bridged internally and bridgeing it through the speaker terminals could be disatrous, i.e. the infamous blue smoke of death. The amp looks like a 2 channel amp fromt he pic and you have two speakers you are trying to power with it. So the safest bet would be to just unbridge your speakers and hook them each up to the amp as normal. No blue smoke. Good luck!
Is there a option on the chanels that say ''Bridged''? If so, you can hook the subs up in parellel or series to get different ohm loads. Usually the lower ohms, the more power amp puts out. Those subs can handle 225 watts RMS whitch means the power it can handle constantly. If the amp gives more than 225 watts RMs, you could be at risk of blowing the sub. If you could give me the model # of the amp, I can be of more help.
use a multimeter to see if the amp has good power wire and remote turn on voltage. then check the ground and make sure its a good strong ground. check the sub to make sure its not bad. make sure it reads whatever ohm its supposed to. anything less than 4 ohms will clip the amp if bridged. if alll that is good then the only thing left is the amp. it sounds like the power supply is bad but check everything else just to make sure. good luck.
When you bridge amp they some time double in power output into a certain load. If the actual load of your speakers are lower than the required bridged load the out put of the amp will proportionally try to increase again. You have to match your loads to the specs of your amp. Use your manual to see what is required, then use ohms law, for adding resistors in series/parallel to make your speaker load match. For more info please reply.
Unless your amp is 1 (one) ohm stable then you may have fried it. When you attach a 2 ohm load across a bridged amp then you have effectivly placed each output channel on a 1 ohm load. Not a good thing in most cases. Try hooking up ONE speaker on one channel and one input to that one channel one at a time. Then switch the speaker/input to the other channel and see if you can get either or both channels to work independently. Needless to say you must turn the amp off before you make ANY change in the wiring.
ASSUMING that the amp is OK with a 2ohm load then you "set it up" by the configuration of the speakers you use. Two 4 ohm speakers if parallel will give you a 2 ohm load. However, if you are bridging the ouputs then a single 4 ohm speaker bridged between the two outputs will put a 2 ohm load on each channel. Be very careful if you are bridging the outputs that you know what you are doing. On average, when bridged wrong (too much load) the amp will last about one month before it fries. Get some help if you are bridging. Be sure not sorry.
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