Aragon 4004 MKii issue

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I own an Aragon 4004 MK II that has been modified and is now in 2 separate chassis. One of the amps has a distortion making the speaker sound blown. It is worse when the amp is cold. I have noticed that the amp that functions well heats up, the heat sinks get fairly warm. The amp that sounds distorted is dead cold, even after being used. Could there be a biasing issue or an adjustment causing the issue?

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Topic - Aragon 4004 MKii issue - JOThompson 12:07:40 07/03/17 (5)

RE: Aragon 4004 MKii issue - airtime 13:02:08 07/04/17 (0)

RE: Aragon 4004 MKii issue - FenderLover 16:54:44 07/03/17 (0)

RE: Aragon 4004 MKii issue - SgreenP@MSN.com 12:43:36 07/03/17 (2)

RE: Aragon 4004 MKii issue - JOThompson 18:22:53 07/03/17 (1)

RE: Aragon 4004 MKii issue - alfagil 09:44:18 07/10/17 (0)

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