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.

Diamond buffer
Diamond buffer
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 4th February 2012, 08:21 PM   #1
pdul is offline pdul  Denmark
diyAudio Member
 
Join Date: Jan 2009
Location: Copenhagen
Default Diamond buffer

Hi !
I just bought a board for this on Ebay.
Anybody have some experience or comments for this circuit?
Is it any good as a linestage in a preamp?
How does it sound?
Any take on component values before I start soldering?
Any input will be wellcome.
The pws is onboard standard LM317/337 setup
  Reply With Quote
Old 4th February 2012, 08:23 PM   #2
pdul is offline pdul  Denmark
diyAudio Member
 
Join Date: Jan 2009
Location: Copenhagen
sorry i forgot
Attached Images
File Type: jpg F4-1.jpg (42.6 KB, 653 views)
  Reply With Quote
Old 4th February 2012, 09:48 PM   #3
jaycee is offline jaycee  United Kingdom
diyAudio Member
 
Join Date: Apr 2004
Location: Norwich, UK
I use a similar circuit as a headphone amp - in mine the 3K9 resistors are active current sources. It sounds pretty good to me.

I scaled mine up a bit - the output devices are MJE15032/3, because I run it with enough bias current that it is class A for 32 ohm loads. Try your kit, it'll sound nice
  Reply With Quote
Old 4th February 2012, 10:08 PM   #4
pdul is offline pdul  Denmark
diyAudio Member
 
Join Date: Jan 2009
Location: Copenhagen
What opamp do you use?
  Reply With Quote
Old 4th February 2012, 10:12 PM   #5
pdul is offline pdul  Denmark
diyAudio Member
 
Join Date: Jan 2009
Location: Copenhagen
My plan is to use LME 49720
  Reply With Quote
Old 4th February 2012, 10:14 PM   #6
dirkwright is offline dirkwright  United States
diyAudio Member
 
dirkwright's Avatar
 
Join Date: May 2011
Location: Virginia
Quote:
Originally Posted by pdul View Post
My plan is to use LME 49720
Good choice! I did the same. I have two of these boards from Jim's Audio. I built one but have not listened to it. I ran some square waves through it and they looked good. I matched the output transistors as well.
  Reply With Quote
Old 4th February 2012, 10:24 PM   #7
jaycee is offline jaycee  United Kingdom
diyAudio Member
 
Join Date: Apr 2004
Location: Norwich, UK
I used OPA2134 because i had them
  Reply With Quote
Old 4th February 2012, 10:34 PM   #8
pdul is offline pdul  Denmark
diyAudio Member
 
Join Date: Jan 2009
Location: Copenhagen
Do you use A970/C2240 and A1145/C2705 as shown in the schematic?
  Reply With Quote
Old 4th February 2012, 10:44 PM   #9
pdul is offline pdul  Denmark
diyAudio Member
 
Join Date: Jan 2009
Location: Copenhagen
Will 10 times amplification be suitable for a linestage ?
  Reply With Quote
Old 4th February 2012, 10:50 PM   #10
jaycee is offline jaycee  United Kingdom
diyAudio Member
 
Join Date: Apr 2004
Location: Norwich, UK
No, BC550/BC560, and MJE15032/3 for the outputs. How much gain you'll need depends on your source. I found that for a 2V RMS input, no gain was needed.

Bear in mind that headphones are typically quite sensitive and it doesn't take much output power to blow your head off!
  Reply With Quote

Reply


Diamond bufferHide 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
Who invented Diamond Buffer? Wavebourn Solid State 8 21st August 2010 07:57 PM
Diamond Buffer - Super Buffer peranders Solid State 34 16th May 2010 01:46 PM
Diamond buffer in PIMETA slowpogo Chip Amps 3 19th April 2007 05:58 AM
what about diamond buffer MOSFET? padamiecki Solid State 26 5th October 2005 03:55 PM
Diamond buffer peranders Solid State 45 15th November 2003 11:00 PM


New To Site? Need Help?

All times are GMT. The time now is 01:22 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