JFET BOZ Preamp - diyAudio
Go Back   Home > Forums > Commercial Sector > Swap Meet

Swap Meet Sell your stuff here, who knows, some other fanatic might be interested!

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 4th May 2012, 02:54 AM   #1
john65b is offline john65b  United States
diyAudio Member
 
john65b's Avatar
 
Join Date: Jan 2005
Location: Chicago
Default JFET BOZ Preamp

2SK170 JFET BOZ Preamp in nice Aluminum Case.

Built per the schematic by Nelson. But instead of 25k volume pot, I have a 100k stepped attenuator, and the 10uf cap is a Wima 1.5uf. Preferred the sound of the 1.5uf Wima over any 10uf cap I had...

The "stop" at Max Volume has worn down, and can rotate full turn - there is slight resistance from full volume to min volume...

Overall very clean sound with lots of gain (too much for anything I needed)

Powered by 19 VDC Laptop power supply (included).

How does $140 sound?
Attached Images
File Type: jpg P1010002.JPG (713.3 KB, 461 views)
File Type: jpg P1010003.JPG (690.8 KB, 419 views)
File Type: jpg P1010004.JPG (663.0 KB, 428 views)
__________________
All right, but apart from the sanitation, medicine, education, wine, public order, irrigation, roads, the fresh water system and public health, what have the Romans ever done for us? Life of Brian
  Reply With Quote
Old 11th May 2012, 03:12 AM   #2
john65b is offline john65b  United States
diyAudio Member
 
john65b's Avatar
 
Join Date: Jan 2005
Location: Chicago
$130? Offers/trades considered...
__________________
All right, but apart from the sanitation, medicine, education, wine, public order, irrigation, roads, the fresh water system and public health, what have the Romans ever done for us? Life of Brian
  Reply With Quote
Old 19th May 2012, 12:38 PM   #3
john65b is offline john65b  United States
diyAudio Member
 
john65b's Avatar
 
Join Date: Jan 2005
Location: Chicago
$120??
__________________
All right, but apart from the sanitation, medicine, education, wine, public order, irrigation, roads, the fresh water system and public health, what have the Romans ever done for us? Life of Brian
  Reply With Quote
Old 19th May 2012, 02:45 PM   #4
diyAudio Member
 
jmillerdoc's Avatar
 
Join Date: Mar 2009
Location: Lawton, OK, USA
I am interested....will this run on 12v? Is it a split rail voltage? What is the minimum voltage it will run on?
  Reply With Quote
Old 19th May 2012, 03:54 PM   #5
john65b is offline john65b  United States
diyAudio Member
 
john65b's Avatar
 
Join Date: Jan 2005
Location: Chicago
The circuit should work with 12v. It is not dual rail - singe rail with PP Cap output.

According to the thread, if I remember correctly, 16V was the optimim with teh proposed circuit.

I can drop price if you don't want the PS
__________________
All right, but apart from the sanitation, medicine, education, wine, public order, irrigation, roads, the fresh water system and public health, what have the Romans ever done for us? Life of Brian
  Reply With Quote
Old 29th May 2012, 02:22 AM   #6
john65b is offline john65b  United States
diyAudio Member
 
john65b's Avatar
 
Join Date: Jan 2005
Location: Chicago
Still available...
__________________
All right, but apart from the sanitation, medicine, education, wine, public order, irrigation, roads, the fresh water system and public health, what have the Romans ever done for us? Life of Brian
  Reply With Quote
Old 9th June 2012, 01:15 PM   #7
john65b is offline john65b  United States
diyAudio Member
 
john65b's Avatar
 
Join Date: Jan 2005
Location: Chicago
bump
__________________
All right, but apart from the sanitation, medicine, education, wine, public order, irrigation, roads, the fresh water system and public health, what have the Romans ever done for us? Life of Brian
  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
Jfet BOZ Vix Pass Labs 1303 23rd July 2014 10:07 AM
JFet BOZ Tyimo Pass Labs 14 30th April 2006 03:18 PM


New To Site? Need Help?

All times are GMT. The time now is 08:24 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