Diy Tube Phono Preamp

alexmoose · 27th March 2006, 01:24 AM

Does anyone know of a good tube phono pre-amp that is DIY? and preferably cheap? because I am going to try and build a stereo that is transistorless! and it is only possible if i get a tube phono preamp. Any help is extremly welcome

arnoldc · 27th March 2006, 01:40 AM

Find Kuei Yang Wang's post on El Cheapo phono stage. A couple of member have built it.

Miniwatt · 27th March 2006, 03:57 AM

This one's supposed to be pretty good:

To be found on www.triodedick.com (Dutch only -check 'projects')

SRMcGee · 27th March 2006, 12:36 PM

Alexmoose:

Bottlehead offers the Seduction phono preamp. I don't have one, but their Foreplay preamp was a terrific project and sounds too good to be true.

Regards,
Scott

audiohead · 27th March 2006, 03:03 PM

The cathode resistor of the first mu follower stage is missing!

Shoog · 27th March 2006, 03:33 PM

"Find Kuei Yang Wang's post on El Cheapo phono stage. A couple of member have built it."

I built this and its great.

Shoog

alexmoose · 27th March 2006, 06:05 PM

Quote:

Originally posted by Shoog
"Find Kuei Yang Wang's post on El Cheapo phono stage. A couple of member have built it."

I built this and its great.

Shoog

I think I found it

http://www.diyaudio.com/forums/showt...?postid=335624

Here
This is the schematic

is this the illustrious "El Cheapo phono stage"?

KevinTams · 27th March 2006, 08:50 PM

Quote:

Originally posted by alexmoose

is this the illustrious "El Cheapo phono stage"?

It's the valve El Cheapo, there is an opamp El Cheapo version.

I've built the valve El Cheapo and am well pleased with it. There is another thread started by Kofi Anan with a lot of detail on the build particularly the earthing. I found that I needed to build the psu separate from the stage as there was too much noise, but I am using a v.low output cartridge.

Kev

arnoldc · 27th March 2006, 10:55 PM

That's it alex, on my way to build mine too.

alexmoose · 27th March 2006, 11:30 PM

Okay, I have identified the "El cheapo" (whoever dubded it that needs a metal) However being a nube to tubes, I of course have some questions that will make me look like an idiot.

What does the number mean after the resistor value in some of the resitors for example 51k1 (bottom left corner) does this imply 1 watt? resistor with a value of 51k ohms?

How much current do you think this needs? because the Hammond 269 JX provides 250v (the B+ on the schem) at 60ma for a modest $33.95 from Tubes and more is this enough?

What does the capacitor labeled "2u(mew)2" (middle right) mean? I understand way by which capacitors are rated, but what does that mean?

What does "MKP" mean?

What does "KP-SN" mean?

27th March 2006, 01:24 AM	#1
alexmoose diyAudio Member Join Date: Mar 2006 Location: Michigan	Diy Tube Phono Preamp Does anyone know of a good tube phono pre-amp that is DIY? and preferably cheap? because I am going to try and build a stereo that is transistorless! and it is only possible if i get a tube phono preamp. Any help is extremly welcome

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
DIY tube phono preamp ?	abacus	Analog Line Level	2	16th September 2008 11:08 PM
Tube Phono preamp kit?	ChopperCharles	Tubes / Valves	4	13th March 2008 06:14 AM
Are the any tube phono preamp PCB's	regal	Analogue Source	3	27th October 2006 04:45 AM
phono tube preamp?	karma	Tubes / Valves	7	4th July 2003 01:19 PM
Tube Phono Preamp/Headphone Amp	trustalbini	Headphone Systems	6	14th April 2003 01:41 PM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

27th March 2006, 01:40 AM	#2
arnoldc diyAudio Member Join Date: Apr 2003 Location: Makati	Find Kuei Yang Wang's post on El Cheapo phono stage. A couple of member have built it.

27th March 2006, 03:57 AM	#3
Miniwatt diyAudio Member Join Date: Nov 2004 Location: Den Haag	This one's supposed to be pretty good: To be found on www.triodedick.com (Dutch only -check 'projects')

27th March 2006, 12:36 PM	#4
SRMcGee diyAudio Member Join Date: May 2004 Location: Wynnewood, PA	Alexmoose: Bottlehead offers the Seduction phono preamp. I don't have one, but their Foreplay preamp was a terrific project and sounds too good to be true. Regards, Scott

27th March 2006, 03:03 PM	#5
audiohead diyAudio Member Join Date: Mar 2005 Location: Los Angeles, california	The cathode resistor of the first mu follower stage is missing!

27th March 2006, 03:33 PM	#6
Shoog diyAudio Member Join Date: Aug 2002 Location: Eire	"Find Kuei Yang Wang's post on El Cheapo phono stage. A couple of member have built it." I built this and its great. Shoog

27th March 2006, 10:55 PM	#9
arnoldc diyAudio Member Join Date: Apr 2003 Location: Makati	That's it alex, on my way to build mine too.

27th March 2006, 11:30 PM	#10
alexmoose diyAudio Member Join Date: Mar 2006 Location: Michigan	Okay, I have identified the "El cheapo" (whoever dubded it that needs a metal) However being a nube to tubes, I of course have some questions that will make me look like an idiot. What does the number mean after the resistor value in some of the resitors for example 51k1 (bottom left corner) does this imply 1 watt? resistor with a value of 51k ohms? How much current do you think this needs? because the Hammond 269 JX provides 250v (the B+ on the schem) at 60ma for a modest $33.95 from Tubes and more is this enough? What does the capacitor labeled "2u(mew)2" (middle right) mean? I understand way by which capacitors are rated, but what does that mean? What does "MKP" mean? What does "KP-SN" mean?