Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

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

New Project - Plitron 4006
New Project - Plitron 4006
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
Thread Tools Search this Thread
Old 15th February 2008, 03:46 AM   #1
gingertube is offline gingertube  Australia
diyAudio Member
Join Date: Oct 2004
Location: Adelaide South Oz
Default New Project - Plitron 4006

I have had a pair of Plitron 4006 (VDV2100) sitting on shelf for a number of years together with the matching power trannies. It now time to get off my butt and do something with them.

Specs are 1885 Ohms Raa to 5 Ohms
100 Watts
20.7 Hz to 217 kHz (-3dB points)
40% Ultralinear taps.

Construction will be a pair of monoblocks - I don't insist on screwing the full 100W out of them but would hope to get at least 50 W.

I'm prepared for the possible necessity of running bias servos to balance idle currents.
I hope to run low or zero global feedback.

Anyone have any advice on the "best" way to use these.

Options I've considered so far are:

2 pairs KT88, KT90, 6550 in Ultralinear (or triode mode)
3 pairs KT66, KT77, EL34 in Ultralinear (or triode mode)
2 pairs JJ 300B triode mode

Given the cost of the trannies I'm not adverse to the cost of 4 300Bs or similar for each monoblock.

Any advice gratefully received.

  Reply With Quote
Old 15th February 2008, 05:41 AM   #2
planet10 is online now planet10  Canada
diyAudio Moderator
planet10's Avatar
Join Date: Oct 2001
Location: Victoria, BC, NA, Sol III
New Project - Plitron 4006
An Allen Wright style amp with the 300Bs in class A should be good for 50W (Allen gets 25 from a pair). The high output impedance of the differential cascode would allow RH-style feedback (you started a theme with Baby Huey, Ian)

community sites t-linespeakers.org, frugal-horn.com, frugal-phile.com ........ commercial site planet10-HiFi
p10-hifi forum here at diyA
  Reply With Quote


New Project - Plitron 4006Hide 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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Plitron Transformers. simaduio Group Buys 11 2nd February 2010 12:22 AM
plitron tenderland Tubes / Valves 9 15th August 2005 01:20 PM
Plitron transformer Praudio Everything Else 2 16th February 2005 09:49 PM
Plitron For Sale Coulomb Swap Meet 7 25th January 2005 07:14 PM
Plitron Dennis Hui Parts 7 11th December 2002 01:53 AM

New To Site? Need Help?

All times are GMT. The time now is 08:46 PM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 16.67%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright ©1999-2017 diyAudio