Help me understand audison LR605XR 5-ch amplifier - diyAudio
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Old 5th February 2013, 03:23 PM   #1
diyAudio Member
Join Date: Sep 2009
Default Help me understand audison LR605XR 5-ch amplifier


I had to open an audison LR605XR 5-channel amp to replace a trimpot in the crossover and have some some questions.

I "think" I can clearly identify 6 channels. 4 small channels with 1 pair of OT each on the input side of the amp and 2 bigger channels with 6 OT each pretty much in the center of the amp.

I initally thought that the signal for the subwoofer was splitted off on the input board, probably summed in some way and amplified, thus 5 channels.

What is the usual way 5 channels amp are build ?

Just curious on this one, as I thought about checking the bias before putting it back together and that question puzzled me, even if not directly related.

Thanks in advance,

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Old 5th February 2013, 09:51 PM   #2
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Join Date: Nov 2003
Location: Louisiana
There is no 'usual' way. Each manufacturer decides what's best depending on their target customers or the cost of production.
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Old 6th February 2013, 12:27 PM   #3
ppalli is offline ppalli  Italy
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Join Date: Jun 2005
Location: marche
Sub channel consists of two amplifiers in bridge configuration, each with 6 OT. This is in order to obtain high power with the same power supply voltage of other channels
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Old 7th February 2013, 06:18 AM   #4
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Thanks to both of you for your input!
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