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Old 3rd August 2003, 04:30 PM   #11
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Quote:
Originally posted by Peter Menting
Lynn OLson certainly agreed when he designed his Amity amps with PP 2A3's.
I've built a couple of versions of the Amity/Aurora now. It's very good,

Quote:
Will keep you posted as to progress.
Looking forward to it.

Cheers
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Old 3rd August 2003, 10:43 PM   #12
mcs is offline mcs  Denmark
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Default Re: Looking for a Preamp

Quote:
Originally posted by Peter Menting
Just completed my "Back into tubes" project, a Dyna 70 clone with goodies. Sounds wonderful, so good to hear the detail again. Next project, a line stage/ phono preamp any suggestions?
I would suggest a passive "preamp" like others have done - you could add a cathode follower or plate follower output if you need a lower output impedance. But I don't think that should be nescessary if the preamp and power amp are placed close to eachother.

For the phono preamp I like this circuit: http://www.geocities.com/bobdanielak/phono.html

Best regards,

Mikkel C. Simonsen
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Old 3rd August 2003, 11:27 PM   #13
mcs is offline mcs  Denmark
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Quote:
Originally posted by Brett
- make a small enclosure with a selector switch then a volume control and place it beside/under the ST70. Have the selector switch and pots at the rear of the enclosure close to the sockets. Use extension shafts and couplers (try Welborne). This keeps the capacitance after the volume control to a minimum and gets rid of most of the adverse effects of a passive pre.
What do you think about this layout capacitance and adverse effect wise: http://stiftsbogtrykkeriet.dk/~mcs/Test-50.gif

The actual size is 10*16cm. I have just built that board to replace an input selector only box.

Best regards,

Mikkel C. Simonsen
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Old 4th August 2003, 07:30 PM   #14
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Default Looking For A Preamp

Mikkel; Thank you for the response, I believe that for now I will go "passive" and see how things work out. As for the preamp Schematic and the Board I'll have to add them to my "reading list", it is wonderful to recieve such response to an inquiry, thanks to all!
Pete
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Old 17th August 2003, 12:45 AM   #15
mcs is offline mcs  Denmark
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I've just taken a couple of pictures of my new "passive pre" - it looks nice to me ;-)

http://stiftsbogtrykkeriet.dk/~mcs/Remote3/

No tubes visible - they are hiding in the phono stage and power amp :-)

Best regards,

Mikkel C. Simonsen
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