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

Analog Line Level Preamplifiers , Passive Pre-amps, Crossovers, etc.

Doug Self Preamp from Linear Audio #5
Doug Self Preamp from Linear Audio #5
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 1st October 2018, 11:30 PM   #1161
Freecrowder is offline Freecrowder  United States
diyAudio Member
 
Join Date: Jun 2007
One other thing square solder pad on IDC connector is pin 1 correct.
  Reply With Quote
Old 1st October 2018, 11:46 PM   #1162
Carl_Huff is offline Carl_Huff  United States
diyAudio Member
 
Join Date: Dec 2004
Location: Bakersfield, CA
Default IO Switch Assembly Details in PICs

The Lorlin switch is adjustable as to the number of selector stops by simply moving the washer under the nut that has a 'finger' reaching into the switch body. That finger becomes a physical stop for the switch.

Sorry about your frustration. The attached PICs should clarify your assembly issues.
Attached Images
File Type: jpg SWITCH_00.jpg (17.4 KB, 308 views)
File Type: jpg SWITCH_01.jpg (18.2 KB, 304 views)
File Type: jpg SWITCH_02.jpg (21.2 KB, 306 views)
File Type: jpg SWITCH_03.jpg (22.9 KB, 303 views)
File Type: jpg SWITCH_04.jpg (22.7 KB, 296 views)
File Type: jpg SWITCHED_5_IO_00.jpg (55.3 KB, 84 views)
File Type: jpg SWITCHED_5_IO_00c.jpg (11.6 KB, 84 views)
__________________
Best Regards,
Carl Huff
  Reply With Quote
Old 2nd October 2018, 01:36 AM   #1163
Freecrowder is offline Freecrowder  United States
diyAudio Member
 
Join Date: Jun 2007
I fixed some issues with IDC not lining up with pin 1. So far I have inputs 3 and 5 working. I have not tried XLR's yet. Still don't understand switching yet. The position on switch are farther apart than expect to see. Too many switch positions between 3 and 5. Your board for switch is a different version than mine. A little bit confusing. to get pin one on IDC and the board pin 1 you have to put switch on side that says to put it on the opposite side. Do you have any more switch boards. May have messed something up on the board from solder -desolder. frustrated and calling it a nite.
  Reply With Quote
Old 2nd October 2018, 02:03 AM   #1164
Carl_Huff is offline Carl_Huff  United States
diyAudio Member
 
Join Date: Dec 2004
Location: Bakersfield, CA
Quote:
Originally Posted by Freecrowder View Post
... Do you have any more switch boards. May have messed something up on the board from solder -desolder. frustrated and calling it a nite.
Sure, we can fix you up. Please send me a private message and we will get your problems sorted.
__________________
Best Regards,
Carl Huff
  Reply With Quote
Old 2nd October 2018, 03:52 AM   #1165
DoubleIPA is offline DoubleIPA  New Zealand
diyAudio Member
 
Join Date: Mar 2011
Location: Tauranga, New Zealand
Default Great thread

I really enjoyed reading through this thread. What a fantastic project.

Some of the cases were amazing. I thought the wood versions were quite special.

Cheers!

Peter
  Reply With Quote
Old 2nd October 2018, 10:07 AM   #1166
hadihf is offline hadihf  Pakistan
diyAudio Member
 
Join Date: Mar 2007
Default I/O board schematic

Carl, if its OK with you I can share my schematic of I/O board which is an exact replica? pdf file.


Best Regards
Farooq
  Reply With Quote
Old 2nd October 2018, 01:50 PM   #1167
Freecrowder is offline Freecrowder  United States
diyAudio Member
 
Join Date: Jun 2007
If Carl doesn't mind I would like to have that I/O schematic for troubleshooting.
  Reply With Quote
Old 2nd October 2018, 02:13 PM   #1168
Carl_Huff is offline Carl_Huff  United States
diyAudio Member
 
Join Date: Dec 2004
Location: Bakersfield, CA
Quote:
Originally Posted by hadihf View Post
Carl, if its OK with you I can share my schematic of I/O board which is an exact replica? pdf file.


Best Regards
Farooq
Sure,

Please post it.
__________________
Best Regards,
Carl Huff
  Reply With Quote
Old 3rd October 2018, 05:49 AM   #1169
DoubleIPA is offline DoubleIPA  New Zealand
diyAudio Member
 
Join Date: Mar 2011
Location: Tauranga, New Zealand
Anyone using a potentiometer with a center detent for balance and tone controls? Does this one look like a possible match?

5k ohm Dual Linear Rotary Potentiometer with Center Detent

Click the image to open in full size.

Click the image to open in full size.
  Reply With Quote
Old 3rd October 2018, 06:33 AM   #1170
Carl_Huff is offline Carl_Huff  United States
diyAudio Member
 
Join Date: Dec 2004
Location: Bakersfield, CA
Quote:
Originally Posted by DoubleIPA View Post
Anyone using a potentiometer with a center detent for balance and tone controls? Does this one look like a possible match?
That looks to be a great choice!
__________________
Best Regards,
Carl Huff
  Reply With Quote

Reply


Doug Self Preamp from Linear Audio #5Hide 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
Doug Self's New Preamp Construction and Pictures redjr Analogue Source 190 30th May 2018 06:34 AM
What does preamp PSU oscillation look like for linear regulators? shredhead Power Supplies 59 28th March 2015 09:16 PM
Doug Self Elektor phono preamp: SA1085 substitute? tcpip Analogue Source 9 26th September 2013 12:11 PM
OLDSCHOOL CAR AUDIO-ORION/US AMPS/LINEAR POWER/PLANET AUDIO TUBES NIB mclsound Swap Meet 7 26th July 2013 10:10 AM
4th Ed. of Audio Power Amplifier Design Handbook (Doug Self) nickds1 Solid State 4 9th November 2006 12:02 PM


New To Site? Need Help?

All times are GMT. The time now is 07:00 AM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 14.29%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Copyright ©1999-2019 diyAudio
Wiki