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Leach in a gutted Hafler?
Leach in a gutted Hafler?
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Old 23rd May 2007, 05:21 PM   #1
PrestonTom is offline PrestonTom  United States
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Join Date: Apr 2006
Location: connecticut
Default Leach in a gutted Hafler?

I believe someone has done this before but no details were given.

If a build the Leach (ver4.5 not the "super") can use the following from my Hafler dh200

1. Chassis (looks like there is plenty of room)
2. Transformer (the Leach specs a 56-59 volt) and I don't know about the other specs
3. Heat sinks (the Leach specs recommend something that looks like more surface area). I assume I can re-drill holes to fit the new transistors (if necessary).

I will be prudent and not try to re-use the big caps.

There had been talk of a Nelson Pass designed Class A to put in the Hafler chassis, but it looks like that project got sidelined.

My ultimate use is for amplifying some very efficient corner horns. So power and high current are not critical but a very clean sound with a tight bass are the priorities.

Your advice is appreciated,
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Old 23rd May 2007, 11:49 PM   #2
jaycee is offline jaycee  United Kingdom
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Location: Norwich, UK
I've seen at least one Leach built as a Hafler look alike. I don't see why not
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Old 23rd May 2007, 11:55 PM   #3
djk is offline djk
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Location: USA
Brian GT built a Leach in a Hafler chassis.

The transformer voltage is fine, and the sink is already drilled for TO-3 outputs.
Candidates for the Darwin Award should not read this author.
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Old 1st June 2007, 09:38 PM   #4
rickl is offline rickl  United States
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Join Date: Jun 2004
Location: Minneapolis
I've thought about doing this to my broken Marantz 250. Love those blue meters .
searching for jazz and a little libations.
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