where to place extra filter cap - 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 March 2004, 05:56 PM   #1
drembo is offline drembo  United States
diyAudio Member
 
Join Date: Aug 2003
Location: Orange, California
Default where to place extra filter cap

I am building a pair of 300B monoblock amps. After starting the project and manufacturing the top plates of the chassis, I decided to upgrade the power supply by adding an extra choke and filter cap. Originally, I was using 5U4G/15uf/choke/50uf(to 300B)/resistor/30uf(to both sides of 6SN7 input and driver). Now I have 5U4G/30uf/choke/50uf(300b)/choke/50uf(driver side 6SN7)/resistor/50uf(input side 6SN7). I only have spots for a 30 and two 50uf polypropylene and oil caps on the top plate so I am adding a 50uf Solen metalized polypropylene cap inside. My question is, at which node should I use the Solen cap to maximize any sonic benefits I may garner through the use of the oil caps?
  Reply With Quote
Old 30th March 2004, 09:06 PM   #2
diyAudio Senior Member
 
fdegrove's Avatar
 
Join Date: Aug 2002
Location: Belgium
Hi,

If it were me I'd put the highest quality cap at the input stage 1/2 6SN7 and highest value cap at the 300B.

Space permitting, Solen at the input as said, and move the poly&oil towards the powertube to add to the existing cap.

Cheers,
__________________
Frank
  Reply With Quote
Old 30th March 2004, 09:33 PM   #3
diyAudio Member
 
Join Date: Mar 2004
Location: aberdeen, uk
Send a message via AIM to martinab2 Send a message via MSN to martinab2 Send a message via Yahoo to martinab2
If you haven't already tried it then PSU designer from Duncan Amps is worth a go. It allows you to simulate different power supply circuits and see the output waveforms etc. Free download from http://www.duncanamps.com/software.html
  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
2x 2Sk170 in place of 2SK389 and 2x 2SJ74 in place of 2SJ109? jarthel Parts 12 26th July 2007 09:08 AM
What should I do with extra transistors? random_id Chip Amps 2 11th April 2005 03:57 AM
Where to place the active xover filter rs1026 Chip Amps 2 3rd September 2004 01:31 PM
Best place to place bleeder resistor in a power supply? G Tubes / Valves 13 4th August 2004 09:26 AM
New extra supply..... Lyra Digital Source 1 20th January 2004 12:48 PM


New To Site? Need Help?

All times are GMT. The time now is 09:12 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