EF86 valve phono preamp. - UK Vintage Radio Repair and Restoration Discussion Forum

bobhowe · 28th Feb 2006, 10:50 pm

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

.

Aub · 1st Mar 2006, 6:40 am

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

AndiiT · 1st Mar 2006, 7:52 am

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

Andrew

ronbryan · 1st Mar 2006, 12:12 pm

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

ppppenguin · 6th Mar 2006, 6:39 pm

The famous Quad 22 preamp used EF86

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

28th Feb 2006, 10:50 pm	#1
bobhowe Triode Join Date: Jun 2005 Location: Sunderland. Posts: 44	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.

1st Mar 2006, 6:40 am	#2
Aub Heptode Join Date: Mar 2005 Location: Nuneaton Posts: 534	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

1st Mar 2006, 7:52 am	#3
AndiiT Octode Join Date: Aug 2005 Location: Saltburn-East Cleveland Posts: 1,160	Re: ef86 valve phono preamp Hi, Perhaps not ideal but these may be of some use Andrew Attached Thumbnails Last edited by AndiiT; 1st Mar 2006 at 8:03 am.

1st Mar 2006, 12:12 pm	#4
ronbryan Heptode Join Date: Jan 2003 Location: Guildford Posts: 783	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

6th Mar 2006, 6:39 pm	#5
ppppenguin Banned Join Date: Dec 2003 Location: North London, N12 Posts: 6,441	Re: ef86 valve phono preamp The famous Quad 22 preamp used EF86 http://www.triodeel.com/quad22.gif