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Old 14th January 2005, 05:27 PM   #1
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Question Safe to increase bias on factory Aleph 30's?

Hi everyone,

I have a good friend with a pair of factory Aleph 30's driving a pair of Martin Logan Aerius i's.

How far can the bias be safely turned up to drive these lower impedance speakers a bit better?

Hoping to get more power into 2-4 ohms.

Thank you,

-David
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Old 14th January 2005, 05:33 PM   #2
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All you dare. But then again watch the heat.
You should be able to touch the heatsink for five seconds...without gloves.

/Hugo
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Old 17th January 2005, 08:48 PM   #3
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Default Re: Safe to increase bias on factory Aleph 30's?

Quote:
Originally posted by dw8083
How far can the bias be safely turned up to drive these lower impedance speakers a bit better? Hoping to get more power into 2-4 ohms.
Forget it, sez I.
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Old 17th January 2005, 11:43 PM   #4
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That's what I was afraid of. The amp would sound good for a few minutes and then... poof.

Appreciate the the kind help.

-David
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Old 18th January 2005, 06:57 PM   #5
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You can do it, but you really can't increase the bias enough
to make that much difference. Easier to just start with a
larger design or get some Lowther or Fostex drivers.
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Old 18th January 2005, 08:18 PM   #6
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You could parrallel the inputs and the outputs of the two channels to get more drive...I've have some home brew aleph threes running this way for the last 2 years
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