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Old 10th March 2004, 11:59 AM   #1
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Default Tube preamplifier
Does anyone know of a tube preamplifier which is well documented, easy for diy and that has already been built before? I am searching for some time now to find an article like those published from Mr. Pass, for his series of preamplifiers, but to no avail. Can someone help pointing me in the correct direction.

I have found out about Pete Millett's low-mu preamplifier, from Audioxpress magazine 02/04, but I can not find anyone that has built this preamp nor any reviews. Any comments?

(This preamp can be found at www.pmillett.addr.com)

Thank you
George
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Old 10th March 2004, 12:10 PM   #2
w00t is offline w00t  Singapore
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www.diyparadise.com has a 'Simple 5687' tube preamp project. The site is down for me now though.
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Old 10th March 2004, 01:20 PM   #3
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I believe that's a line-stage not really a full fledged pre-amp...
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Old 10th March 2004, 02:55 PM   #4
arnoldc is offline arnoldc  Philippines
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Bottlehead Foreplay.

Built by many, easy to build, cheap, sounds good (to me), and has great support.

Go to bottlehead.com (i'm not affiliated)

Quote:
I believe that's a line-stage not really a full fledged pre-amp...
hmmm, can you expound on what you mean?
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Old 10th March 2004, 04:51 PM   #5
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Preamp:
Attached Images
File Type: gif all-out preamp.gif (7.4 KB, 610 views)
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See my Electronics webpage -- the home of Vacuum Tube Drag Racing.
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Old 10th March 2004, 04:53 PM   #6
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Pic (hiding in my desk drawer)
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File Type: jpg preamp003.jpg (33.1 KB, 578 views)
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Old 11th March 2004, 09:00 AM   #7
w00t is offline w00t  Singapore
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Quote:
Originally posted by Sch3mat1c
Preamp:
Newbie question:
Why are the tubes used for the signal side also found in the PSU side?
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Old 11th March 2004, 09:50 AM   #8
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hi

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Why are the tubes used for the signal side also found in the PSU side?
only in reference to their filaments.

Federico
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Old 11th March 2004, 10:43 AM   #9
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Well the DIYAudio link is working now...whu diun u guys go take a look?? Should be the simple 5687 preamp...
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Old 11th March 2004, 03:06 PM   #10
w00t is offline w00t  Singapore
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Quote:
Originally posted by fscarpa58
hi



only in reference to their filaments.

Federico

Oh.. I thought those looked like gas regulator, but missing a dot.
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