unbalanced line stage almost completed - diyAudio
Go Back   Home > Forums > Amplifiers > Pass Labs

Pass Labs This forum is dedicated to Pass Labs discussion.

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 6th October 2003, 07:52 PM   #1
diyAudio Member
 
Hanzwillem's Avatar
 
Join Date: Nov 2002
Location: Hengelo, The Netherlands
Default unbalanced line stage almost completed

Hi, finally i got myself to test the long completed unbalanced balanced line stage. After measuring with scope and multimeter I hooked it up to my Zen V2 and it sounds quite good already, even though the power supply (metal box and print next to it up side down) isn't finished yet. Also the gain is to high and I use a 50k ALPS pot i had found in my stock. I will replace that with a 10k as soon as possible. Also the decoupling caps are MKT which have to be replaced with better ofcourse.

btw, these bias resistors (3W) get really really hot and smell like burning hair after some minutes, is this normal? The ones in my boz get also really hot but they don't smell that bad. The bias resistors in my Zen are 25W, they can cope with some dissipation

Finally an image, it sounds better than it looks
the blue case beneath the amp is supposed to contain this linestage when finished...

greatings from Enschede, Netherlands,

Hans-Willem

Click the image to open in full size.
  Reply With Quote
Old 13th October 2003, 10:23 PM   #2
The one and only
 
Nelson Pass's Avatar
 
Join Date: Mar 2001
Is it just me, or are there more DIYers per capita in the
Netherlands than anywhere else?
  Reply With Quote
Old 13th October 2003, 10:30 PM   #3
diyAudio Member
 
Join Date: Jan 2003
Location: Enschede
And a lot of them in Enschede :-)
  Reply With Quote
Old 13th October 2003, 10:41 PM   #4
diyAudio Member
 
Hanzwillem's Avatar
 
Join Date: Nov 2002
Location: Hengelo, The Netherlands
because dutch people are cheap. If they cannot afford expensive stuff they have to make it themselves .
  Reply With Quote
Old 14th October 2003, 03:05 AM   #5
diyAudio Member
 
Join Date: Nov 2001
Location: Haarlem
Send a message via MSN to blank527
And the sound is worse over here
  Reply With Quote
Old 14th October 2003, 11:51 AM   #6
Djomil is offline Djomil  Serbia
diyAudio Member
 
Join Date: Aug 2003
Location: Belgrade
Where is the pictures!!!!!!!!!!!!!!!
  Reply With Quote
Old 14th October 2003, 12:04 PM   #7
diyAudio Member
 
Hanzwillem's Avatar
 
Join Date: Nov 2002
Location: Hengelo, The Netherlands
indeed, where are the pictures? they WAS one...
Click the image to open in full size.


still not packed in a nice housing...
  Reply With Quote
Old 14th October 2003, 04:57 PM   #8
Taco is offline Taco  Netherlands
diyAudio Member
 
Join Date: Nov 2002
Location: Place in the Netherlands
Do you have the pot at the input? You can replace the pot with a cheap stepped-attenuater. (make your own ofcoz).

Dutch people are well educated, can write some words english, so they are hanging arround on foreign forums . And many people here in Holland have an internet connection.
  Reply With Quote
Old 14th October 2003, 05:07 PM   #9
diyAudio Member
 
Hanzwillem's Avatar
 
Join Date: Nov 2002
Location: Hengelo, The Netherlands
Quote:
Originally posted by Taco
Do you have the pot at the input? You can replace the pot with a cheap stepped-attenuater. (make your own ofcoz).

I have the pot at the input. I have a 24 step ELMA attenuator currently in my BOZ which I will use in the final version of my unBosoZ.
  Reply With Quote
Old 23rd October 2003, 02:03 PM   #10
Merijn is offline Merijn  Netherlands
diyAudio Member
 
Join Date: May 2002
Location: Arnhem, The Netherlands
Default Enschede

OK, so there ARE a lot of DIYers from Enschede here

HanzWillem, Maybe we could come together once and have a nice evening of tweaking and so on, I myself am currently fiddling with a nice preamp to drive my somewhat old QUAD 405, mr. Pass told me BoSoZ would do fine...

Greetz,

Merijn
  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
Unbalanced sound stage Castalia Multi-Way 17 29th July 2009 07:28 PM
Line stage preamp, based on SY's "Heretical Unity gain line stage" Danko Tubes / Valves 23 18th July 2005 04:07 AM
Unbalanced Line Driver punchpeanut Solid State 7 12th December 2003 01:31 PM
Balanced line stage, quistion's + unbalanced lykkedk Pass Labs 4 19th December 2002 11:58 PM
Zen Balanced Line Stage Balanced vs Unbalanced macka Pass Labs 28 11th December 2002 06:18 AM


New To Site? Need Help?

All times are GMT. The time now is 08:44 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