Phono preamp mm

cartier20002000 · 20th November 2007, 03:19 AM

Hi,

I would like to make a phono preamp type mm for my turn table. Somebody have something to propose.

cartier20002000

Conrad Hoffman · 20th November 2007, 04:35 AM

You could do a lot worse than the circuit National Semiconductor has in their app note for their new LME opamps.

AMV8 · 20th November 2007, 11:54 AM

Conrad

Thanks for your comment. I just tried to find the application note but could not. Could you give me an op amp number to search against please.

Thanks

Don

Onvinyl · 20th November 2007, 12:07 PM

Hi,
this is it, I think (page2):

http://cache.national.com/ds/LM/LME49710.pdf
Rüdiger

AMV8 · 20th November 2007, 12:12 PM

thanks

Don

woodturner-fran · 20th November 2007, 02:25 PM

Search in this forum for the VSPS.

excellent phonostage

Thomo · 22nd November 2007, 07:42 AM

Hi. Has anyone tried the PassLabs Xono or Pearl Phono stages?

Lee.

dangus · 27th November 2007, 03:08 AM

Check out the Hagerman Technology Bugle preamp kit; those are available on eBay for reasonable prices. Reviews suggest that they perform very well.
http://www.hagtech.com/bugle.html
There's enough info there to build one from scratch if you wanted.

If you listen to house and techno music, you could build a classic DJ mixer phono stage: the schematic for the UREI 1620 can be found online. There's some images online of the 1622 phono card which clearly show the layout.

jcx · 27th November 2007, 03:17 AM

I strongly recommend against "passive eq" with flat op amp gain stages in RIAA preamps as shown in the national datasheet:

http://www.diyaudio.com/forums/showt...t=#post1014067

20th November 2007, 03:19 AM	#1
cartier20002000 diyAudio Member Join Date: Sep 2007	Phono preamp mm Hi, I would like to make a phono preamp type mm for my turn table. Somebody have something to propose. cartier20002000

20th November 2007, 12:07 PM	#4
Onvinyl diyAudio Member Join Date: Aug 2002 Location: Germany	Hi, this is it, I think (page2): http://cache.national.com/ds/LM/LME49710.pdf Rüdiger __________________ "I can feel what's going on inside a piece of electronic equipment. I have a sense that I know what's going on inside the transistors." Robert Moog

22nd November 2007, 07:42 AM	#7
Thomo diyAudio Member Join Date: Nov 2006	Hi. Has anyone tried the PassLabs Xono or Pearl Phono stages? Lee. __________________ /\/\/\/\/\/\/\/

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20th November 2007, 04:35 AM	#2
Conrad Hoffman diyAudio Member Join Date: Mar 2007 Location: Canandaigua, NY USA	You could do a lot worse than the circuit National Semiconductor has in their app note for their new LME opamps.

20th November 2007, 11:54 AM	#3
AMV8 diyAudio Member Join Date: Jan 2005 Location: near london	Conrad Thanks for your comment. I just tried to find the application note but could not. Could you give me an op amp number to search against please. Thanks Don

20th November 2007, 12:12 PM	#5
AMV8 diyAudio Member Join Date: Jan 2005 Location: near london	thanks Don

20th November 2007, 02:25 PM	#6
woodturner-fran diyAudio Member Join Date: Jan 2006 Location: Ireland	Search in this forum for the VSPS. excellent phonostage

27th November 2007, 03:08 AM	#8
dangus diyAudio Member Join Date: May 2004 Location: Vancouver Island	Check out the Hagerman Technology Bugle preamp kit; those are available on eBay for reasonable prices. Reviews suggest that they perform very well. http://www.hagtech.com/bugle.html There's enough info there to build one from scratch if you wanted. If you listen to house and techno music, you could build a classic DJ mixer phono stage: the schematic for the UREI 1620 can be found online. There's some images online of the 1622 phono card which clearly show the layout.

27th November 2007, 03:17 AM	#9
jcx diyAudio Member Join Date: Feb 2003 Location: ..	I strongly recommend against "passive eq" with flat op amp gain stages in RIAA preamps as shown in the national datasheet: http://www.diyaudio.com/forums/showt...t=#post1014067

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