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Old 08-11-2009, 05:37 PM
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Default MAA465 with only 2 speakers

Hi I recently purchased the MAA465 amp and 2 MAC8002 8" speakers. I would like 2 use this amp using only 2 speakers and have a question about hooking it up. I was advised to wire the speakers using the bridged option. Is this the correct way to wire them? I ask because I currently have them wired this way and the amp gets extremely hot to the touch. It has not overheated yet and shut off, but I am worried that it may? Any advice?
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Old 08-11-2009, 07:19 PM
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Default Re: MAA465 with only 2 speakers

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Originally Posted by Prplngld8 View Post
Hi I recently purchased the MAA465 amp and 2 MAC8002 8" speakers. I would like 2 use this amp using only 2 speakers and have a question about hooking it up. I was advised to wire the speakers using the bridged option. Is this the correct way to wire them? I ask because I currently have them wired this way and the amp gets extremely hot to the touch. It has not overheated yet and shut off, but I am worried that it may? Any advice?
It is very unusual to bridge the channels of an amplifier to run a full range speaker, such as the MAC8002. When you bridge two channels of an amplifier, you create one channel that sums the right and left channel mono, useful for subwoofers or a single center channel. See page 12 in your owner's manual. The amplifier will generate more heat due to the fact that you have all 4 channels bridged. This is a by-product of running an amplifier in a bridged mode. I would suggest that you are careful with your gains and crossover settings if you are going to keep your amplifier connected this way. The MAC8002 are full range speakers, not subwoofers, and you are exceeding the power handling (150 watts), so keep this in mind.
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Old 08-12-2009, 11:49 AM
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Default Re: MAA465 with only 2 speakers

Thanks for the input. Would having 2 channels bridged generate any more heat than having 4 speakers running? Also I placed my hand near where it looks like the fans should be blowing out air on the right side of the unit and feel no air coming out. Is it possible the fans on my amp are defective?
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Old 08-12-2009, 12:16 PM
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Default Re: MAA465 with only 2 speakers

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Originally Posted by Prplngld8 View Post
Thanks for the input. Would having 2 channels bridged generate any more heat than having 4 speakers running? Also I placed my hand near where it looks like the fans should be blowing out air on the right side of the unit and feel no air coming out. Is it possible the fans on my amp are defective?
2 channels bridged will generate more heat then having 4 speakers (assuming they are all 4 ohm) running due to the lower power output. Again, heat is always going to be a by-product, the lower the power output, the cooler the amplifier will run. The fans on the amplifier will turn-on as needed, if the amplifier gets too hot, it will shut down due to the Thermal Protection Mode.
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