Studio Reference Amplifier - Page 43 - diyAudio
Go Back   Home > Forums > Amplifiers > Solid State

Solid State Talk all about solid state amplification.

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 19th January 2012, 05:43 PM   #421
mihailo is offline mihailo  Serbia
diyAudio Member
 
Join Date: May 2010
Location: Serbia
Leonatax, you can use BC557,BC556,BC560 and BC546,BC547,BC550. Just dont use BC548/BC558. They are only 30V limit. There are also some 2SC/2SA, that can be used.
Regards
  Reply With Quote
Old 19th January 2012, 06:31 PM   #422
diyAudio Member
 
Join Date: Oct 2011
Location: Moldova
Send a message via Skype™ to leonatax
Thanks a lot
  Reply With Quote
Old 19th January 2012, 07:02 PM   #423
mihailo is offline mihailo  Serbia
diyAudio Member
 
Join Date: May 2010
Location: Serbia
2SC1815/2SA1015 can be used instead of BC546/BC556, but look pin position.
Regards
  Reply With Quote
Old 20th January 2012, 12:42 PM   #424
diyAudio Member
 
Join Date: Mar 2001
Location: Brazil
Quote:
Originally Posted by mihailo View Post
Leonatax, you can use BC557,BC556,BC560 and BC546,BC547,BC550. Just dont use BC548/BC558. They are only 30V limit. There are also some 2SC/2SA, that can be used.
Voltage limit will depend on the position the transistors are in.

For Q1-Q2 you can use better, lower voltage transistors, even dual types if you can find them. Like MAT01 and MAT02.
  Reply With Quote
Old 20th January 2012, 01:46 PM   #425
diyAudio Member
 
apexaudio's Avatar
 
Join Date: Feb 2010
Location: Serbia
There is no any voltage limit for replace BC550/560 transistors. BC550/560 works in cascode 15V is maximum DC voltage for input pair, and only 1,5V in cascode VAS.
  Reply With Quote
Old 20th January 2012, 02:19 PM   #426
diyAudio Member
 
Join Date: Mar 2001
Location: Brazil
Quote:
Originally Posted by apexaudio View Post
There is no any voltage limit for replace BC550/560 transistors. BC550/560 works in cascode 15V is maximum DC voltage for input pair, and only 1,5V in cascode VAS.
Yes, of course. There are 15v zener regulators up and below.

Just curious. Did you try a better regulator to replace the zener ones?
  Reply With Quote
Old 20th January 2012, 02:40 PM   #427
diyAudio Member
 
apexaudio's Avatar
 
Join Date: Feb 2010
Location: Serbia
Quote:
Originally Posted by carlmart View Post
Yes, of course. There are 15v zener regulators up and below.

Just curious. Did you try a better regulator to replace the zener ones?
No, zener regulators is simple shunt regulators and work good
  Reply With Quote
Old 25th January 2012, 05:44 PM   #428
diyAudio Member
 
apexaudio's Avatar
 
Join Date: Feb 2010
Location: Serbia
Quote:
Originally Posted by apexaudio View Post
This is my amp from 80', modular drivers and protect pcb only caps is too big to be fit on amplifier motherboard. I considering to use this design for 'Studio Reference Amp'.
I find schematic of this old amp from '80.
Attached Images
File Type: jpg APEX from '80.jpg (240.3 KB, 1028 views)
  Reply With Quote
Old 26th January 2012, 01:23 PM   #429
diyAudio Member
 
Join Date: Oct 2011
Location: Moldova
Send a message via Skype™ to leonatax
injoy my type of pcb
Attached Files
File Type: pdf SR50byLeon.pdf (177.3 KB, 462 views)
File Type: zip SR200byLeon.zip (680.9 KB, 309 views)
  Reply With Quote
Old 26th January 2012, 01:34 PM   #430
diyAudio Member
 
Join Date: Oct 2011
Location: Moldova
Send a message via Skype™ to leonatax
enjoy my pcb
Attached Files
File Type: zip psu6pcb.zip (146.0 KB, 348 views)
  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
Crown Studio Reference I: beefing up the power supply elac310 Power Supplies 4 28th April 2010 12:50 AM
Reference Amp for studio exhausted mule Solid State 0 5th June 2006 05:39 AM
studio amplifier project? rotation Chip Amps 2 2nd February 2006 04:33 AM
Any website reference for diy Audio Research REFERENCE amp and Manley Studio amp bmpa Tubes / Valves 4 19th April 2004 05:11 AM
Any information , website reference for diy Hi-End computer studio sound card? bmpa Digital Source 5 16th April 2004 04:57 PM


New To Site? Need Help?

All times are GMT. The time now is 02:29 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