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

Pass Labs This forum is dedicated to Pass Labs discussion.

BOSOZ - P3 and P4, what if 20K?
BOSOZ - P3 and P4, what if 20K?
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 6th January 2004, 09:33 PM   #1
lgreen is offline lgreen  United States
diyAudio Member
lgreen's Avatar
Join Date: May 2003
Location: San Diego, USA
Default BOSOZ - P3 and P4, what if 20K?

Here is yet another BOSOZ question:

If all I have is are 20K pots for P3 and P4 and want to use those as a volume control in BOSOZ rather than the 5K indicated in the circuit schematic, should I just go for it or are other circuit changes necessary? In particular I was thinking of changing R11 and R12 to something smaller than their listed value (100K) to compensate. Any thoughts? What are the tradeoffs?

Assume I'm driving a number of different amps, including Aleph 3 (23K ohm input impedance).
  Reply With Quote
Old 7th January 2004, 06:57 AM   #2
Fox is offline Fox  Netherlands
diyAudio Member
Fox's Avatar
Join Date: Dec 2002
Location: The Netherlands
Hi Igreen,

What you could do is placing a 2 to 5K resistor in series with the signal after the 100k resistor to ground. After the 2 to 5 K resistor, you place the 20K pot between the signal and ground. Now you have just created an elegant shunt-attenuator.

With a 5 k series resistor you loose 2,5dB of gain, which may be to much. So it is probably best to take a 2K series resistor.

Hope this helps,

  Reply With Quote


BOSOZ - P3 and P4, what if 20K?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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
To BOSOZ or not to BOSOZ... please comment. spence Pass Labs 4 27th February 2012 02:57 AM
Poll! What do you use in your X-BOSOZ or BOSOZ for Volume Control and Input Selector? promitheus Pass Labs 87 19th February 2006 03:15 PM
X-bosoz vs. CCS X-bosoz, how does the sound compare? acliao Pass Labs 14 26th February 2004 12:55 AM
Bosoz lawbadman Pass Labs 5 14th July 2003 02:10 AM
10K Pot for the BOSOZ raincheck Pass Labs 13 20th September 2002 06:22 PM

New To Site? Need Help?

All times are GMT. The time now is 12:13 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