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Old 3rd November 2010, 08:57 PM   #91
ecir38 is offline ecir38  United States
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Chris, Do you have a part number for the bridge rectifier you used?

Brad
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Old 3rd November 2010, 09:42 PM   #92
cnpope is offline cnpope  United States
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Chris, Do you have a part number for the bridge rectifier you used?

Brad
Hi Brad,

I didn't use anything very sophisticated; a 1000V, 35A bridge rectifier, type GBPC3510, by Diodes Inc. Available from Mouser.

Chris
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Old 3rd November 2010, 09:44 PM   #93
djn is offline djn  United States
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I think the Stealth Hexfreds are 1200V 15A or so.

That is what I am going to get I think. This is all good to know. I talked to the friend who has the machine shop and he can't make me chassis until mid Dec. so I have some time to collect parts.
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Old 3rd November 2010, 09:49 PM   #94
ecir38 is offline ecir38  United States
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Thanks Chris, nothing special but it is all that is needed . Working on a BOM, so far almost all the parts will be coming from Mouser.

Brad
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Old 3rd November 2010, 10:52 PM   #95
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Thanks Chris, nothing special but it is all that is needed . Working on a BOM, so far almost all the parts will be coming from Mouser.

Brad
the one i have playing is using all fast diodes and the bridge is a 1200v 17A fast diode bridge from ixys out of digikey. i use these as replacements on my futterman's/nyal's. part number vbe17-12no7-nd.

well i have the 6c33 amp playing side by side with one of my nyal otl3's and she is opening up and sounding nicer every day. Sound nice and clean with a rich tone. I'll give her a few more weeks and see where she ends up.

Enjoy
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Old 3rd November 2010, 11:53 PM   #96
djn is offline djn  United States
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Hi Des, are you hearing any preference with the TM OTL? Like is it better at highs, mid, bass? that kind of thing?

What does "fast" mean when you are talkiing about diodes?
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Old 4th November 2010, 12:31 AM   #97
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Hi Des, are you hearing any preference with the TM OTL? Like is it better at highs, mid, bass? that kind of thing?

What does "fast" mean when you are talkiing about diodes?
On the amp i think in general it pretty even so far across the baord. Its controls Quad 63's very well even in the bass area where Quads have a specific sound.

Fast on diodes means recovery time
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Old 4th November 2010, 02:33 AM   #98
djn is offline djn  United States
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Thanks D. I normally tri amp because I like the flexability to match amps with drivers. But things are changing around here and I might need to drive a passive speakers with it.

Edit: I just looked up the Quad as I'd never heard of them and see that they are ESL speakers. Don't ESLs need a gob of power? That is what I've always heard at least.
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Old 4th November 2010, 10:19 AM   #99
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Thanks D. I normally tri amp because I like the flexability to match amps with drivers. But things are changing around here and I might need to drive a passive speakers with it.

Edit: I just looked up the Quad as I'd never heard of them and see that they are ESL speakers. Don't ESLs need a gob of power? That is what I've always heard at least.
The discussion on Quads could easily be another thread.

I have had success with many diferent power schemes on 57's and 63's. I think it really depends on the amp. If you read back on Tim article loads above 16 ohms realiy help in pulling more power out of the amp. I think I remember hearing 40 or 50 watts and Quads very often will range in those areas under active load.
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Old 4th November 2010, 08:46 PM   #100
djn is offline djn  United States
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The only reason I ask is that a friend of mine offered me a pair of Sound Lab ESL panels without the power box. I have the scheem for those, but thought that even with my Mellow OTL, (which will be my highest powered amp), it would not be enough wpc.
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