Studio Reference Amplifier - Page 129 - 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 7th July 2013, 04:13 PM   #1281
diyAudio Member
 
Join Date: Aug 2009
Quote:
Originally Posted by tinitus View Post
checking as in 'measured', and not 'just' by looking at color codes ?

or else, measure a similar spare component/resistor, and compare color codes with the ones mounted

just checking
R12,R13 =47R/+-1% MEASURED an color code checking.
kirchhoff say I(R11)=I(R12)+I(R13)
1.65mA=0.51mA+1.14mA
V(R11)=0.00165*8200=13.53V Measurment on R11=13.8v

Last edited by thimios; 7th July 2013 at 04:26 PM.
  Reply With Quote
Old 7th July 2013, 09:09 PM   #1282
diyAudio Member
 
Join Date: Feb 2013
Location: CRO
Send a message via Skype™ to overall feedback
Quote:
Originally Posted by thimios View Post
R12,R13 =47R/+-1% MEASURED an color code checking.
kirchhoff say I(R11)=I(R12)+I(R13)
1.65mA=0.51mA+1.14mA
V(R11)=0.00165*8200=13.53V Measurment on R11=13.8v
Just asking, is there 2x470uF capacitor on it's place?
  Reply With Quote
Old 8th July 2013, 02:52 AM   #1283
diyAudio Member
 
Join Date: Aug 2009
Quote:
Originally Posted by overall feedback View Post
Just asking, is there 2x470uF capacitor on it's place?
In series with R15
Thanks for replay.
Attached Images
File Type: jpg DSC06645.JPG (539.4 KB, 427 views)
  Reply With Quote
Old 8th July 2013, 05:39 AM   #1284
diyAudio Member
 
Join Date: Aug 2009
Default sr200 studio refer.

I would ask anyone has built this amp to measure VR12,VR13.Just two measurments without putting servo out.
  Reply With Quote
Old 8th July 2013, 07:29 AM   #1285
diyAudio Member
 
JOHN BALI's Avatar
 
Join Date: Jun 2010
Location: Near the Mountain
Hi Thimios, I've build it too but not finish yet waiting for transformer to use... what voltage do you use it without servo? I will check my SR200 too so you can compare to it...
__________________
Thank you, I wish you happy
peace & G B U
  Reply With Quote
Old 8th July 2013, 09:22 AM   #1286
AndrewT is offline AndrewT  Scotland
diyAudio Member
 
Join Date: Jul 2004
Location: Scottish Borders
resistor checked, input LTP Vbe checked.
There is still serious imbalance in the LTP.

Now check the Vbe of the mirrors and the VAS.
__________________
regards Andrew T.
  Reply With Quote
Old 8th July 2013, 09:35 AM   #1287
diyAudio Member
 
Join Date: Aug 2009
Default sr200 studio refer.

Quote:
Originally Posted by JOHN BALI View Post
Hi Thimios, I've build it too but not finish yet waiting for transformer to use... what voltage do you use it without servo? I will check my SR200 too so you can compare to it...
I use +/-45V with and without servo.
Keep in mind that amplifier is functional .
Thanks for replay.
good luck.
  Reply With Quote
Old 8th July 2013, 09:39 AM   #1288
diyAudio Member
 
Join Date: Aug 2009
Quote:
Originally Posted by AndrewT View Post
resistor checked, input LTP Vbe checked.
There is still serious imbalance in the LTP.

Now check the Vbe of the mirrors and the VAS.
Tkanks Mr, Andrew .
I can check this as soon as i can.
  Reply With Quote
Old 8th July 2013, 12:38 PM   #1289
diyAudio Member
 
Join Date: Aug 2009
Default sr200 studio refer.

Hi Mr Andrew
Here are measurments.
Attached Images
File Type: jpg APEX SR200V2 VERSION 2!!MEASUR. Sch.JPG (469.4 KB, 332 views)

Last edited by thimios; 8th July 2013 at 12:44 PM.
  Reply With Quote
Old 8th July 2013, 02:49 PM   #1290
AndrewT is offline AndrewT  Scotland
diyAudio Member
 
Join Date: Jul 2004
Location: Scottish Borders
None of those are broken. But too much variation.
Now do Q5, 6, 10 & it's partner.
__________________
regards Andrew T.
  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 09:53 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