Pot and knob compatability - 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 25th February 2009, 06:26 PM   #1
diyAudio Member
 
Join Date: Feb 2009
Question Pot and knob compatability

Hi,
Does anybody know if knobs with a 6mm diameter hole will fit on a 6.3mm / 1/4" pot? The unit different seems minimal but would like to be sure either way before I buy!

Also the knobs I'm looking at have a height and diameter of 18mm, does this affect the type of pot I should use, or is pot size (e.g. 16mm or 24mm) referring to the body size.

Thanks
  Reply With Quote
Old 25th February 2009, 07:17 PM   #2
diyAudio Member
 
boywonder's Avatar
 
Join Date: Jan 2008
Location: So.Cal.
No they won't fit as-is but it'll take about a minute to enlarge the hole to 1/4" since you are removing a mouse-fart worth of material. You can probably do it without a problem with a hand drill, but a drill press makes the job a little easier.

Using a 1/4" knob on a 6mm pot shaft is much harder, since you need to take up the slop with a spacer.

You can use any size knob you want, has nothing to do with the body size of the pot.
  Reply With Quote
Old 25th February 2009, 07:21 PM   #3
diyAudio Member
 
Join Date: Feb 2009
Thanks for that - I've got access to a full workshop at university so a press drill shall be used!

So just to clarify, is the shaft of all alpha pots the same length? And what difference does it make choosing a different sized body? Is a bigger one smoother or something?
  Reply With Quote
Old 25th February 2009, 07:38 PM   #4
diyAudio Member
 
boywonder's Avatar
 
Join Date: Jan 2008
Location: So.Cal.
The shafts come in all different lengths but they are easy enough to cut since they are aluminum (or sometimes plastic on inexpensive pots). I think the body size has to do with the technology used (cermet, carbon, wire wound, etc) and the wattage rating.

All of the alpha pots/selectors that I've used recently (all two of them ) had AL shafts.

You can click thru to the data sheets for all of the dims of most pots if you are shopping at Digikey, Mouser, etc.
  Reply With Quote
Old 25th February 2009, 07:45 PM   #5
diyAudio Member
 
Join Date: Feb 2009
I see! Thanks for you help
  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
T-amp compatability w/ sub plate amp Jim Shearer Chip Amps 8 12th January 2010 10:41 PM
adjustable voltage regs compatability KevinLee Parts 1 16th December 2008 08:18 PM
Amp / Driver Compatability patherb Multi-Way 12 13th June 2008 05:36 PM
knob JBL Parts 5 5th September 2001 10:57 PM


New To Site? Need Help?

All times are GMT. The time now is 10:52 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