Building a symmetrical psu B1 buffer - Page 119 - 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 23rd March 2010, 01:18 PM   #1181
diyAudio Member
 
regiregi22's Avatar
 
Join Date: May 2009
Location: Madrid (Spain)
That's the only thing I am afraid about, the switch contacts. My last rotary switch I bought from ebay fails from time to time. In some positions, you only have sound in one channel, you have to move it a bit to have a good engadgement.
But is not really a concern, it happens only once for every 20 or 30 times I move the switch. And for the price, you can't beat it. An stereo 23 steps switch for 10$, shipping included. I have mine mounted with Dale's and sound wonderful.

dantwomey, I really like your approach. But as you don't need the pots to be good ones, you can use some cheapers. I may do something as you if I is possible to find cheaper motor controlled pots.
__________________
diyAudio, doing it as big as you can, JUST BECAUSE WE CAN!
  Reply With Quote
Old 23rd March 2010, 01:24 PM   #1182
diyAudio Member
 
Join Date: Feb 2002
Location: Canada
Quote:
Originally Posted by regiregi22 View Post
dantwomey, I really like your approach. But as you don't need the pots to be good ones, you can use some cheapers. I may do something as you if I is possible to find cheaper motor controlled pots.
Yes, so far giving our buffer some sort of remote control is just an idea. When the time comes to do it I'll post here for the most cost effective way to achieve that goal.

Regards,
Dan
  Reply With Quote
Old 23rd March 2010, 01:51 PM   #1183
diyAudio Member
 
regiregi22's Avatar
 
Join Date: May 2009
Location: Madrid (Spain)
Then I will start documenting myself about the different ways of controlling a motor. Never built anything like it. I will have a chat with my dad, an old school microcontroller programmer
__________________
diyAudio, doing it as big as you can, JUST BECAUSE WE CAN!
  Reply With Quote
Old 23rd March 2010, 04:11 PM   #1184
Zigis is offline Zigis  Latvia
diyAudio Member
 
Join Date: May 2005
Location: Riga, Latvia
Here is remote control for Alps;
eBay.ie: IR CONTROL REMOTE SET f ALPS motorized potentiometer (item 350264537471 end time 11-Apr-10 07:04:44 BST)
Not cheap, available with input relay control too, for 100 euro.
  Reply With Quote
Old 23rd March 2010, 06:05 PM   #1185
diyAudio Member
 
Join Date: Dec 2008
Two Bugs running fine


Question: on both the 5 LED's on negative rail light brighter than
on the other. How does that come ??

(Out Voltage is 9,7V/10,5V)

regards Michael
  Reply With Quote
Old 23rd March 2010, 06:11 PM   #1186
Salas is offline Salas  Greece
diyAudio Chief Moderator
 
Salas's Avatar
 
Join Date: Oct 2002
Location: Athens-Greece
The positive Vref is running more current normally. Not enough to see a marked brightness difference, but I would expect it on the plus Vref Leds if obvious with some Leds.

P.S. Happy listening, and post us pics and experiences, like when going holidays.
  Reply With Quote
Old 23rd March 2010, 07:11 PM   #1187
Bengali is offline Bengali  United States
diyAudio Member
 
Join Date: Oct 2006
Hi,

so have you built up your DC B1's?

anyone compare to B1 sound?

how do you like it overall?

thx
  Reply With Quote
Old 23rd March 2010, 07:55 PM   #1188
diyAudio Member
 
Join Date: Dec 2008
Thanks Salas, it's positive rail. You can see on the pic.

Sound is really great. I'll add some P3 coolers next to run at higher current.
At the moment it has it's place and I'm sure I would miss the bug much
if it runs away

Here two pics, with LSQR2 from analog-forum.
Attached Images
File Type: jpg IMG_2234.jpg (69.3 KB, 418 views)
File Type: jpg IMG_2239.jpg (81.7 KB, 418 views)
  Reply With Quote
Old 23rd March 2010, 08:21 PM   #1189
Tea-Bag is offline Tea-Bag  United States
not politcally affiliated
diyAudio Member
 
Tea-Bag's Avatar
 
Join Date: Feb 2006
Location: Kennebunk
Blog Entries: 7
anyone compared the pink vs red resistors?
__________________
Salas Boards 2014 #2 On order |F5TC board and power supplies available PM | Hot-Rod DCB1 boards and kits available PM |Mesmerize kits available (no boards)
  Reply With Quote
Old 23rd March 2010, 08:37 PM   #1190
diyAudio Member
 
Algar_emi's Avatar
 
Join Date: Oct 2002
Location: Canada, Qc
Can someone send me the schematic for the auxiliary circuit portion of the Mesmerize? I mean the time delayed Mute relay and input selection relays portion of the PCB.

Thanks in advance.
  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
New-building of my B1 buffer Babowana Pass Labs 328 20th February 2010 01:14 AM


New To Site? Need Help?

All times are GMT. The time now is 05:37 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