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

Solid State Talk all about solid state amplification.

100W Ultimate Fidelity Amplifier
100W Ultimate Fidelity Amplifier
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 3rd March 2019, 07:53 AM   #11031
Sunny22g is offline Sunny22g
diyAudio Member
 
Join Date: Nov 2016
I am also making pp12 and liner
  Reply With Quote
Old 3rd March 2019, 08:01 AM   #11032
apexaudio is offline apexaudio  Serbia
diyAudio Member
 
apexaudio's Avatar
 
Join Date: Feb 2010
Location: Serbia
alexmm made pcb for sr pp12
Attached Images
File Type: jpg sr pp12 alex.jpg (401.1 KB, 710 views)
File Type: jpg sr pp12.jpg (84.8 KB, 749 views)
File Type: jpg APEX HEADPHONE AMP[LIFIER.jpg (473.6 KB, 695 views)
  Reply With Quote
Old 3rd March 2019, 08:04 AM   #11033
Sunny22g is offline Sunny22g
diyAudio Member
 
Join Date: Nov 2016
Quote:
Originally Posted by apexaudio View Post
alexmm made pcb for sr pp12


O My god this is very good
  Reply With Quote
Old 3rd March 2019, 12:39 PM   #11034
masood251 is offline masood251
diyAudio Member
 
Join Date: Jun 2011
Please anyone tell me that in fh9 i want to know the direction of zener 12volts and mosfet irfp9240 or irfp9140 what is its right.Thanks
  Reply With Quote
Old 3rd March 2019, 01:06 PM   #11035
maouna is offline maouna  Greece
diyAudio Member
 
Join Date: Oct 2008
I have started building P8 preamp but it has 23db gain.I would like to have around 10 db gain but i am afraid stability margins will get worse if i lower the gain.
Attached Images
File Type: png APEX P8 - SCHEMATIC.png (6.5 KB, 680 views)
  Reply With Quote
Old 3rd March 2019, 03:17 PM   #11036
ivanlukic is offline ivanlukic  Serbia
diyAudio Member
 
Join Date: Jul 2010
Location: Cacak
Use 3k3 for R6 and if there is instability try higher value for C7 and C8 (220pF or 330pF). Also, the value of C4 should be 50 to 100 times the value of C1 in order to avoid interaction between them. So, use at least 470uF for C4.
__________________
The world has enough for every man's need, but not enough for every man's greed.” Gandhi

Last edited by ivanlukic; 3rd March 2019 at 03:19 PM.
  Reply With Quote
Old 3rd March 2019, 03:34 PM   #11037
shabusf is offline shabusf  India
diyAudio Member
 
Join Date: Jan 2010
Hi Mr. Mile,
Could you please help me out with this query.

Thank you
Sha

Quote:
Originally Posted by shabusf View Post
Hi Mr. Mile,
Could you please suggest the best preamp for A40; its P30 or P30ZF?

Thank you.
Sha
  Reply With Quote
Old 3rd March 2019, 04:59 PM   #11038
Gurpreet Turna is offline Gurpreet Turna  India
diyAudio Member
 
Join Date: Sep 2017
Quote:
Originally Posted by maouna View Post
I have started building P8 preamp but it has 23db gain.I would like to have around 10 db gain but i am afraid stability margins will get worse if i lower the gain.
Which one P8. I am confused. I found this schematic on post no. 1800 in studio reference amplifier forum.
Mr. Miles plz explain.

Regards

Gurpreet
Attached Images
File Type: png Apex pre amp.png (349.8 KB, 600 views)
  Reply With Quote
Old 3rd March 2019, 04:59 PM   #11039
apexaudio is offline apexaudio  Serbia
diyAudio Member
 
apexaudio's Avatar
 
Join Date: Feb 2010
Location: Serbia
Quote:
Originally Posted by shabusf View Post
Hi Mr. Mile,
Could you please help me out with this query.

Thank you
Sha
P30
  Reply With Quote
Old 3rd March 2019, 07:13 PM   #11040
maouna is offline maouna  Greece
diyAudio Member
 
Join Date: Oct 2008
Quote:
Originally Posted by ivanlukic View Post
Use 3k3 for R6 and if there is instability try higher value for C7 and C8 (220pF or 330pF). Also, the value of C4 should be 50 to 100 times the value of C1 in order to avoid interaction between them. So, use at least 470uF for C4.
Should i change R10 from 10K to 22K as R2 for minimum output offset?Also could i use a 10p cap across R10 or from T6 collector to base of T3 to improve stability?
Attached Images
File Type: png APEX P8 - SCHEMATIC.png (6.5 KB, 269 views)
  Reply With Quote

Reply


100W Ultimate Fidelity AmplifierHide 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
Good ~100W amplifier percy Solid State 16 3rd April 2013 05:16 PM
New desined 4*100W car amplifier Whortless Car Audio 13 21st July 2011 04:39 AM
Ultimate Amplifier DF Plummer Tubes / Valves 19 23rd March 2011 02:48 AM
Ultimate amplifier glen65 Car Audio 2 19th September 2007 02:15 PM
100W Amplifier Shematic and PCB viki Solid State 2 17th October 2004 11:54 AM


New To Site? Need Help?

All times are GMT. The time now is 02:36 PM.


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