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Vintage Audio (record players, hi-fi etc) Amplifiers, speakers, gramophones and other audio equipment.

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Old 28th Feb 2006, 10:50 pm   #1
bobhowe
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Smile EF86 valve phono preamp.

Hi, has anyone got a circuit diagram for a EF86 Ria phono preamp ? Any advice would be gratefully received .

Last edited by Darren-UK; 18th Jun 2007 at 6:47 pm. Reason: General tidying.
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Old 1st Mar 2006, 6:40 am   #2
Aub
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Default Re: ef86 valve phono preamp

Hi,
If you're starting from scratch, personally, I wouldnt use an EF86 as I find them a bit noisy compared with an ECC83 design. There are some circuits here:-

http://www.bonavolta.ch/hobby/en/audio/audioel.htm

Mullard did an EF86 design but I can't find it just now, sorry.

Regards

Aub
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Old 1st Mar 2006, 7:52 am   #3
AndiiT
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Default Re: ef86 valve phono preamp

Hi,
Perhaps not ideal but these may be of some use

Andrew
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Last edited by AndiiT; 1st Mar 2006 at 8:03 am.
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Old 1st Mar 2006, 12:12 pm   #4
ronbryan
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Default Re: ef86 valve phono preamp

Hi

Here's a link to the Mullard 2 valve pre-amp on Maurice Woodhead's site. This uses two EF86's and has the required equalisation for a pickup.

http://www.vintageradio.me.uk/amplif...lardpreamp.htm

Ron
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Old 6th Mar 2006, 6:39 pm   #5
ppppenguin
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Default Re: ef86 valve phono preamp

The famous Quad 22 preamp used EF86

http://www.triodeel.com/quad22.gif
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