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possible group build [message #10864] Tue, 14 December 2004 20:01 Go to next message
Manualblock is currently offline  Manualblock
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Illuminati (13th Degree)
Anyone active on this?

Re: possible group build [message #10866 is a reply to message #10864] Tue, 14 December 2004 22:12 Go to previous messageGo to next message
Wayne Parham is currently offline  Wayne Parham
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I'm in!

Re: possible group build [message #10867 is a reply to message #10866] Wed, 15 December 2004 09:16 Go to previous messageGo to next message
Manualblock is currently offline  Manualblock
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Have you looked at the scematic? What do you think. I have been reading in AudioeXpress an article defining how to build a minimal reactance power supply that would fit this pre to a tee. The rest of the schematic seems pretty simple and the tubes are cheap. I haven't heard from Colin but this was originally his Idea so I don't want to take any credit for thinking this up.

I'm still here [message #10868 is a reply to message #10867] Wed, 15 December 2004 11:11 Go to previous messageGo to next message
colinhester is currently offline  colinhester
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Sorry for the delay. Had some personal business to attend. Yes, I'm still with you and very excited about the group build. Is the new power supply going to be less expensive? I was looking at Hammond power transformers and we were looking at $50 just for this part.....Colin

Re: I'm still here [message #10869 is a reply to message #10868] Wed, 15 December 2004 11:43 Go to previous messageGo to next message
Manualblock is currently offline  Manualblock
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Well the power supply they use is perfectly adequate, not to worry, there has to be an equivelant transformer for less money. I can search a little and get back to you.
Lets establish a budget and see if we can hit the target.

Re: I'm still here [message #10870 is a reply to message #10869] Wed, 15 December 2004 12:01 Go to previous messageGo to next message
colinhester is currently offline  colinhester
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Let's boiler-plate the cost to bare minimum. Like you said earlier, if people want to build with boutique parts, then that's awesome. I'm just here to learn, have fun and make some new friends. This is my sanctuary from all the world. BTW, where do you get 2x4's for $2.87?

Re: I'm still here [message #10871 is a reply to message #10870] Wed, 15 December 2004 12:42 Go to previous messageGo to next message
Manualblock is currently offline  Manualblock
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Did I mention they are 6 footers??

Re: possible group build [message #10873 is a reply to message #10867] Wed, 15 December 2004 20:24 Go to previous messageGo to next message
Wayne Parham is currently offline  Wayne Parham
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I"ve seen the schematic. Looks like about an hours work, even with the tube rectified power supply. I think it's cool; Nice to put it in an attractive case. Spend a little time on the details and it can be made into a nice looking preamp. And from what I've heard said about it, it will probably be a very nice sounding preamp too.



Re: possible group build [message #10877 is a reply to message #10873] Thu, 16 December 2004 01:43 Go to previous messageGo to next message
Manualblock is currently offline  Manualblock
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What are your thoughts on the power supply issue?

Re: possible group build [message #10878 is a reply to message #10877] Thu, 16 December 2004 02:27 Go to previous messageGo to previous message
Wayne Parham is currently offline  Wayne Parham
Messages: 18669
Registered: January 2001
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I haven't really looked into the differences between diode, fast-recovery (HEXFRED) and tubes, so I defer to the judgement of guys that have played with 'em. I see it really as a matter of switching time, hysterisis and resistance. But even putting that aside, I think it's cool to have a tube rectifier for a tube amp. Solid state diodes are cheaper and easier, so if a guy substituted one, I could sure see why he might. But my vote is to use a tube rectifier.

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