wanted RIAA schematic

sam8888ysl · 17th July 2006, 03:01 AM

I had built some tube amp, but never built RIAA. I want to built a tube RIAA amp. Now I still heave some 5670.5687.5965.6922.5963.WE407A.6BK7B.5844...... and I prefer simple is the best, so, anyone can give me some idea, Thanks, Sam

jackinnj · 17th July 2006, 03:10 AM

I have an Audio Research SP-8 -- the RIAA section is very, very acurate -- you can find a schematic on the Audio Research database: http://www.arcdb.ws/ Also www.tubecad.com has some very good schematics.

Unfortunately Tritschler who wrote a very nice article in AudioXpress 2003 with a passive tube RIAA preamp seems to have gone off the air. I bought two boards from them and they were very, very acurate indeed, but radio silence for months.

Geek · 17th July 2006, 03:27 AM

Hi,

Have you searched the forums? There's quite a few good ones here already.

sam8888ysl · 17th July 2006, 09:01 AM

thanks, I had already find some schematic but, they seem very copmlex, dosent any simple design? like simple RC.

Geek · 17th July 2006, 09:26 AM

Giaime has a very nice simple "passive" phono stage. I don't know if it's simple enough for you:
http://www.giaime.altervista.org/mypreamp_eng.html

I have an active one here:
http://members.dowco.net/canadageek/...hono-Stage.png

Both are one tube/channel designs.

rjtpeters · 17th July 2006, 09:42 AM

Have a look at www.dddac.de and look for Phono dude (tube portal & projects ->tube projects -> item6)

Here you can find a detaild description of a good RIAA amp.

Best regards

sam8888ysl · 17th July 2006, 09:52 AM

Have a look at www.dddac.de and look for Phono dude (tube portal & projects ->tube projects -> item6)

thanks, but I cannot link to the web

Giaime · 17th July 2006, 10:14 AM

Quote:

Originally posted by Geek
Giaime has a very nice simple "passive" phono stage. I don't know if it's simple enough for you:
http://www.giaime.altervista.org/mypreamp_eng.html
Both are one tube/channel designs.

Very honoured to be mentioned

some little adjustment in some component values are needed in my circuit, I will post it later.

Giaime · 17th July 2006, 10:45 AM

Corrections done, refresh your browser page if you still see the old schematic. This is the good one:

Original Burnedfingers · 17th July 2006, 11:01 AM

You might check out

Http://www.hagtech.com/images/cornet2schem.gif

They offer a circuit board for this. The reviews are quite good also.

17th July 2006, 03:01 AM	#1
sam8888ysl diyAudio Member Join Date: May 2005 Location: Taichung	wanted RIAA schematic I had built some tube amp, but never built RIAA. I want to built a tube RIAA amp. Now I still heave some 5670.5687.5965.6922.5963.WE407A.6BK7B.5844...... and I prefer simple is the best, so, anyone can give me some idea, Thanks, Sam

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17th July 2006, 03:10 AM	#2
jackinnj diyAudio Member Join Date: Apr 2002 Location: Llanddewi Brefi, NJ	I have an Audio Research SP-8 -- the RIAA section is very, very acurate -- you can find a schematic on the Audio Research database: http://www.arcdb.ws/ Also www.tubecad.com has some very good schematics. Unfortunately Tritschler who wrote a very nice article in AudioXpress 2003 with a passive tube RIAA preamp seems to have gone off the air. I bought two boards from them and they were very, very acurate indeed, but radio silence for months.

17th July 2006, 03:27 AM	#3
Geek diyAudio Member Join Date: Sep 2004	Hi, Have you searched the forums? There's quite a few good ones here already.

17th July 2006, 09:01 AM	#4
sam8888ysl diyAudio Member Join Date: May 2005 Location: Taichung	thanks, I had already find some schematic but, they seem very copmlex, dosent any simple design? like simple RC.

17th July 2006, 09:26 AM	#5
Geek diyAudio Member Join Date: Sep 2004	Giaime has a very nice simple "passive" phono stage. I don't know if it's simple enough for you: http://www.giaime.altervista.org/mypreamp_eng.html I have an active one here: http://members.dowco.net/canadageek/...hono-Stage.png Both are one tube/channel designs.

17th July 2006, 09:42 AM	#6
rjtpeters diyAudio Member Join Date: May 2006	Have a look at www.dddac.de and look for Phono dude (tube portal & projects ->tube projects -> item6) Here you can find a detaild description of a good RIAA amp. Best regards

17th July 2006, 09:52 AM	#7
sam8888ysl diyAudio Member Join Date: May 2005 Location: Taichung	Have a look at www.dddac.de and look for Phono dude (tube portal & projects ->tube projects -> item6) thanks, but I cannot link to the web

17th July 2006, 11:01 AM	#10
Original Burnedfingers diyAudio Member Join Date: Nov 2002	You might check out Http://www.hagtech.com/images/cornet2schem.gif They offer a circuit board for this. The reviews are quite good also.

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