plitron - 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 10th August 2005, 12:22 PM   #1
diyAudio Member
 
tenderland's Avatar
 
Join Date: Jul 2004
Location: us
Default plitron

Hello after completing a 2a3 using hammond 1627 OPT . iwas concidering building mono block version using a plitron OPT .would this be worth the added expense, i have no objective experience with this OPT

Jeff
__________________
"If every one is making wheels , why make wheels ? " Steve Jobs
  Reply With Quote
Old 10th August 2005, 02:54 PM   #2
kmtang is offline kmtang  Canada
diyAudio Member
 
kmtang's Avatar
 
Join Date: Nov 2004
Location: Vancouver
I have got the Plitron 3.5K SE OPT for my 300B amp. I noticed that it has much wider high frequency response than the Hammond's 1627SE OPT.

You can buy the Plitron directly from them. I believe its quality is really worth.


Johnny
  Reply With Quote
Old 11th August 2005, 02:28 PM   #3
amperex is offline amperex  United States
diyAudio Member
 
Join Date: Feb 2005
Location: MI
Plitron will litterly blow any Hammond out of the water sonically.
  Reply With Quote
Old 11th August 2005, 07:37 PM   #4
agent.5 is offline agent.5  United States
diyAudio Member
 
Join Date: Aug 2003
Location: San Francisco, CA
I have a pair of 2.5K Plitron donuts for 300B. I like the shape of donut.
  Reply With Quote
Old 12th August 2005, 06:21 AM   #5
kmtang is offline kmtang  Canada
diyAudio Member
 
kmtang's Avatar
 
Join Date: Nov 2004
Location: Vancouver
Hi Agent.5,

Just wonder what Power Transformer you are using in your 300B amp. I am using the Toroid.COM's power transformer for it's reasonable price.

Johnny
  Reply With Quote
Old 12th August 2005, 06:25 AM   #6
agent.5 is offline agent.5  United States
diyAudio Member
 
Join Date: Aug 2003
Location: San Francisco, CA
Quote:
Originally posted by kmtang
Hi Agent.5,

Just wonder what Power Transformer you are using in your 300B amp. I am using the Toroid.COM's power transformer for it's reasonable price.

Johnny

vintage UTC.
  Reply With Quote
Old 12th August 2005, 02:34 PM   #7
kmtang is offline kmtang  Canada
diyAudio Member
 
kmtang's Avatar
 
Join Date: Nov 2004
Location: Vancouver
Default Large input capacitor in PS

Hi Agent 5,

Recently I experiment various config for the power supply of my 300B MonoBloc a bit. Now I am having 5U4G-100uF (BG)-10H choke-100uF (BG) CLC PI filter.

I noticed that with higher value of the input capacitor, the sound gets a lot better with flesh and blood especially for the vocal. I understand that 100uF input capacitor is an overkill for the 5U4G. I told my friend that this is a destructive experiment and see how long could the 5U4G last in such condition.


Johnny
  Reply With Quote
Old 12th August 2005, 05:23 PM   #8
agent.5 is offline agent.5  United States
diyAudio Member
 
Join Date: Aug 2003
Location: San Francisco, CA
Default Re: Large input capacitor in PS

Quote:
Originally posted by kmtang
Hi Agent 5,

Recently I experiment various config for the power supply of my 300B MonoBloc a bit. Now I am having 5U4G-100uF (BG)-10H choke-100uF (BG) CLC PI filter.

I noticed that with higher value of the input capacitor, the sound gets a lot better with flesh and blood especially for the vocal. I understand that 100uF input capacitor is an overkill for the 5U4G. I told my friend that this is a destructive experiment and see how long could the 5U4G last in such condition.


Johnny
I think you are right. I use a 2uf cap after the rectifier tubes.
  Reply With Quote
Old 13th August 2005, 10:20 PM   #9
amperex is offline amperex  United States
diyAudio Member
 
Join Date: Feb 2005
Location: MI
Default Careful on xfmr impedance

I like unloading the primary impedance. Most manufactures specs are based upon maximum power at 5% IMD or worst. I prefer 5K with a 300B in the 325 to 350 plate volt range. What a watt or two?
  Reply With Quote
Old 15th August 2005, 02:20 PM   #10
kmtang is offline kmtang  Canada
diyAudio Member
 
kmtang's Avatar
 
Join Date: Nov 2004
Location: Vancouver
I have tried to use 5K OPT with 2A3 and it didn't sound good at all. I would suggest to use 2.5K OPT for 300B.

Johnny
  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
Where do I buy Plitron transformer? hbarki Pass Labs 14 10th November 2010 07:08 AM
Plitron Transformers. simaduio Group Buys 11 2nd February 2010 01:22 AM
plitron #200734 lanchile07 Chip Amps 1 24th October 2007 03:47 AM
Plitron Chassis HFGuy Parts 0 2nd May 2005 06:02 AM
Plitron Dennis Hui Parts 7 11th December 2002 02:53 AM


New To Site? Need Help?

All times are GMT. The time now is 09:39 AM.


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