Vacuum State RTP5. - 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 13th March 2008, 07:52 PM   #1
InSides is offline InSides  Macedonia
diyAudio Member
 
Join Date: Oct 2004
Default Vacuum State RTP5.

So, I've been searching the site and found very little information on the subject, so I thought I try a more direct approach.

I am looking to have built a fully balanced tube phono stage [hybrids are OK], and while searching, came across the schematics for the Allen Wright designed RTP5:

http://www.vacuumstate.com/schematics/rtp5_rev_1_s.gif

I am not by any means an expert [having one built] but I was hoping to get some opinions / comments from people that have actually built this. The good point about this design is that it actually contains a line stage as well [replacing the solid state preamp is also a benefit].

However, the only reference to it I found was a thread about a balanced phono stage where one member said his first stage is based on the RTP3/5.

Can anyone offer any thoughts, comments on this design? Performance wise, bang-for-buck value etc?

I might have some more questions, but I would like to see whether anyone has actually implemented this schematic in a DIY effort to begin with.
  Reply With Quote
Old 14th March 2008, 05:43 PM   #2
EC8010 is offline EC8010  United Kingdom
diyAudio Moderator Emeritus
 
EC8010's Avatar
 
Join Date: Jan 2003
Location: Near London. UK
I have moved this thread as you have a better chance of getting a response here.
__________________
The loudspeaker: The only commercial Hi-Fi item where a disproportionate part of the budget isn't spent on the box. And the one where it would make a difference...
  Reply With Quote
Old 14th March 2008, 06:36 PM   #3
diyAudio Member
 
Shoog's Avatar
 
Join Date: Aug 2002
Location: Eire
I cannot comment on this specific design, but the Vacuum State preamps are some of the best thought out designs out there. I do not think you will be disappointed if you go ahead with this build.

Shoog
  Reply With Quote
Old 14th March 2008, 08:19 PM   #4
KaDe is offline KaDe  Germany
diyAudio Member
 
KaDe's Avatar
 
Join Date: May 2007
Oh Yes, I had to build Allens FVP5 from Sound Practices back in 1998.
You can still find the SP-15 article here :
http://www.vacuumstate.com/phono_secrets.htm
This pre amp is ultra fast & hyper dynamic, my hats off to Allen !
  Reply With Quote
Old 15th March 2008, 04:40 PM   #5
diyAudio Member
 
Brett's Avatar
 
Join Date: Jan 2002
I've built a couple of versions as well as FVP's. It is one of the best phono pre's I've ever heard, but it is a lot of work to build it.

However, using it as a combined linestage and phono pre wasn't too successful: the line section has too much gain for most CDP's and for me worked best as a pure phono pre (change vol pot to 50k resistors) and a passive linestage with TVCs. I also preferred my second stage to Allen's, but that's a personal choice and his is fine.

I have no phono setup at the moment, but when I move somewhere I can another will be built.
  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
Any comment on Vacuum State dpa300b?? la1209 Tubes / Valves 40 10th September 2010 06:15 AM
Vacuum State SuperREGS tubesguy Swap Meet 5 1st March 2009 03:05 PM
My version of the Vacuum State FVP5 Shoog Tubes / Valves 67 18th January 2008 04:26 AM
Vacuum State Electronics FVP5A runeight Tubes / Valves 28 5th December 2003 10:46 AM


New To Site? Need Help?

All times are GMT. The time now is 09:42 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