What do you guys think.. - diyAudio
Go Back   Home > Forums > Amplifiers > Tubes / Valves

Tubes / Valves All about our sweet vacuum tubes :) Threads about Musical Instrument Amps of all kinds should be in the Instruments & Amps forum

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
Reply
 
Thread Tools Search this Thread
Old 30th December 2008, 04:15 AM   #1
diyAudio Member
 
Join Date: Oct 2006
Default What do you guys think..

Here's the situation. I just got given my parents record collection and turntable for x-mas (Includes every original bob dylan record in pretty much mint condition) Now to say I'm excited would be a huge understatement. This is the best thing thats ever happened. So, I really want to put some effort out and build a kick *** phono stage. The system that I'v been working on over the past year or so is a tda1541 dac w/tube output, aikido linestage point-point, and a f4 amp. Thats pretty much the only experience I'v had with diy audio. So still kinda new to this.

The two circuits I'v narrowed it down to ( more suggestions would be great ) are PhonoDude and Steve Bench's RIAA. The Cartridge is a MM, and my budget is $1000 dollars. Do you guys think either of these circuits could stand up to a "high-end" mega buck phono stage?

I really want to make a quailty piece of gear that sounds great. Any idea's or suggestions would be much appreciated.

Thanks

Dave
  Reply With Quote
Old 30th December 2008, 04:50 AM   #2
diyAudio Member
 
Join Date: Jun 2007
I can personally testify that the Phono-Dude is a great sounding phono stage. I built one up a year ago and it replace my heavily modded Moscode Super-It. It's one of the best sounding phono stages I have heard. I did make my own power supply and used Allen Wrights SuperReg CCS voltage regulator and I used Mullard ECC35's instead of the 5751.

While it hasn't made me want to replace my John Curl Vendetta SCP2, it is almost the equal as far as sound quality.

I originally bought the PC boards he was selling, but I went point to point instead as I wanted to have a separate PS and a smaller footpring chassis than the boards would allow. I have them stashed away in my parts archive.

Very nice circuit a WE420A (Raytheon 5755) MuFollower input -passive RIAA- 5751 MuFollower output. His website says a 12AX7 can be used instead of the 5751, but it has more gain, and this puppy has mucho gain. I went with thte ecc35/6SL7 as it is basically an octal equvalent and I had a bunch laying around. I also integrated some step up transformers cuz I have a very low output MC cartridge.

I have some pics but they are too large to post and this BBS doesn't have an auto-reizer

JD
  Reply With Quote
Old 30th December 2008, 05:26 AM   #3
frugal-phile(tm)
diyAudio Moderator
 
planet10's Avatar
 
Join Date: Oct 2001
Location: Victoria, BC, NA, Sol III
Blog Entries: 5
With that kind of budget, i'd be looking to do up Allen Wright's FVP or RTP phono srction.

http://www.vacuumstate.com/index.tpl...771.2284796075

Kofi has a thread currently running here on the bench RIAA

dave
__________________
community sites t-linespeakers.org, frugal-horn.com, frugal-phile.com ........ commercial site planet10-HiFi
p10-hifi forum here at diyA
  Reply With Quote
Old 30th December 2008, 08:15 PM   #4
diyAudio Member
 
Join Date: Aug 2005
Location: Seattle
Send a message via AIM to audiowize
"The Cartridge is a MM, and my budget is $1000 dollars."

Spend some of that on a a moving coil cart and a decent set of step up transformers. There will be plenty left to build a very nice phono stage!
  Reply With Quote
Old 31st December 2008, 01:48 AM   #5
45 is offline 45  Italy
diyAudio Member
 
45's Avatar
 
Join Date: Dec 2008
Location: UK
Default Re: What do you guys think..

Quote:
[i]

The Cartridge is a MM, and my budget is $1000 dollars. Do you guys think either of these circuits could stand up to a "high-end" mega buck phono stage?

I really want to make a quailty piece of gear that sounds great. Any idea's or suggestions would be much appreciated.

Thanks

Dave [/B]
With $750 I would buy a Dynavector P75 MKII.

http://www.dynavector.com/products/amp/e_p75mk2.html

Then if you want the best, IMO, you could go for a Dynavector Karat 17D3 cartridge.....

Cheers,
45
  Reply With Quote
Old 31st December 2008, 07:59 AM   #6
frugal-phile(tm)
diyAudio Moderator
 
planet10's Avatar
 
Join Date: Oct 2001
Location: Victoria, BC, NA, Sol III
Blog Entries: 5
BTW what TT & arm & cart?

dave
__________________
community sites t-linespeakers.org, frugal-horn.com, frugal-phile.com ........ commercial site planet10-HiFi
p10-hifi forum here at diyA
  Reply With Quote
Old 1st January 2009, 01:05 AM   #7
diyAudio Member
 
Join Date: Oct 2006
Thanks for all the reply's! I will definitely consider buying a MC cartridge and transformers. I'm still a little tossed up on what design to use. But realistically , the choices probably all sound really good. The turntable is an old Sansui P-50 with a stock arm and a cheap shure cartridge. I guess it's nothing special, but it will do (for now )


So lets say, tentatively, I build Steve's RIAA with quality parts and a external power supply. Then spend what ever is left over on step-up transformers and some more records. (new turntable will have to come later)

Would you guys do it differently?

Have a great new years

Dave
  Reply With Quote
Old 1st January 2009, 01:20 AM   #8
diyAudio Member
 
Join Date: Aug 2005
Location: Seattle
Send a message via AIM to audiowize
I don't think anybody has asked, but have you built many projects? DIY'ing a phono stage isn't super easy, all iron needs to be isolated from the chassis, DC heaters are almost always mandatory, along with subbers all over the place, etc. Considering a kit isn't a terrible idea. At minimum, I would forget about an external power supply box, that introduces extra noise possibilities that aren't fun to track down.

Instead, shop around for a power transformer with low magnetic radiation (6 k-gauss or so is nice, 11-15 isn't super stellar for a phono pre). A good indicator is a transformer specifically made for phono preamps or one with a copper foil wrap. If you don't see what you need, bug a winder. The winder at Edcor seems to be amenable to making just about anything.
  Reply With Quote
Old 1st January 2009, 02:20 AM   #9
diyAudio Member
 
vinylkid58's Avatar
 
Join Date: May 2005
Location: Victoria, B.C.
Quote:
Originally posted by habsrock93
Would you guys do it differently?
With your current cart/table combo I'd forget about LO MC and SUT's. Just concentrate on building a really quiet and accurate phono pre, and buy a better MM cart. if you have any money left over.

A friend recently built an octal phono/preamp very similar to a JE Labs with the external tube PS. He probably spent close to $500 just for the Audio Note resisters and copper foil in oil caps for this build. Needless to say it sounds very good. His table is a Rega P3 with Ortofon OM30 super.

Jeff
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Guys Help tresch The Lounge 11 7th May 2009 06:05 PM
Hey, you guys! hairylee Introductions 1 19th November 2004 01:32 PM
Hi Guys! I'm one of the Portuguese Guys who love diy sapito Introductions 3 2nd September 2002 03:19 PM


New To Site? Need Help?

All times are GMT. The time now is 01:09 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2