Dual pot in a mono gain circuit - diyAudio
Go Back   Home > Forums > Amplifiers > Solid State

Solid State Talk all about solid state amplification.

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 8th October 2007, 04:51 PM   #1
Netlist is offline Netlist  Belgium
diyAudio Moderator Emeritus
 
Netlist's Avatar
 
Join Date: Jan 2003
Default Dual pot in a mono gain circuit

Is there any particular reason why a dual unit pot is used in a single channel circuit (gain)?
The schematic shows 10ka and the pot is a 20ka Alps which is paralleled by the PCB traces.
http://uk.farnell.com/jsp/search/pro...jsp?sku=642990

/Hugo
  Reply With Quote
Old 8th October 2007, 05:05 PM   #2
diyAudio Member
 
Boris_The_Blade's Avatar
 
Join Date: Mar 2007
Can't seem to find a schematic there, but a lot of times dual potentiometers are used to form a constant impedance attenuator.
  Reply With Quote
Old 8th October 2007, 05:15 PM   #3
Netlist is offline Netlist  Belgium
diyAudio Moderator Emeritus
 
Netlist's Avatar
 
Join Date: Jan 2003
The taper is connected via the 18k resistor to the inverted input of the other half of the 4558.
I can only think that no 10ka was available and they didn't mind spending more production money.

/Hugo
Attached Images
File Type: jpg pot.jpg (31.7 KB, 72 views)
  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
p3a dual mono? Big gain Solid State 19 15th November 2006 10:14 AM
making dual mono jack from single mono jack dubmunkey Analog Line Level 2 12th October 2006 02:16 PM
Why dual mono? preiter Chip Amps 11 21st September 2006 09:37 PM
Single Mono's or Dual Mono? Tazzy Pass Labs 8 3rd October 2002 02:03 PM
Dual Mono - Anti Mono Power Supplies pmkap Everything Else 3 16th February 2002 05:10 AM


New To Site? Need Help?

All times are GMT. The time now is 01:40 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