Go Back   Home > Forums > Amplifiers > Chip Amps

Chip Amps Amplifiers based on integrated circuits

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 8th October 2013, 08:45 AM   #2541
AndrewT is offline AndrewT  Scotland
diyAudio Member
 
Join Date: Jul 2004
Location: Scottish Borders
Who linked to blankwhitepage.com?
It took what seemed like forever to complete !
__________________
regards Andrew T.
  Reply With Quote
Old 8th October 2013, 09:23 AM   #2542
diyAudio Member
 
Bixbacon's Avatar
 
Join Date: Apr 2012
Location: Australia
Hi mhouston, do you have any info about your single tube preamp (12AU7) design. I have built a lm3875 amp and would like to try my hand at a tube pre. Any suggestions?

Regards

Bix
__________________
Its not worth saying, if it's not heard wright.
  Reply With Quote
Old 8th October 2013, 10:40 AM   #2543
diyAudio Member
 
mhouston's Avatar
 
Join Date: Jan 2006
Location: Victoria, Australia
Quote:
Originally Posted by Bixbacon View Post
Hi mhouston, do you have any info about your single tube preamp (12AU7) design. I have built a lm3875 amp and would like to try my hand at a tube pre. Any suggestions?

Regards

Bix
You will have to register with this forum but it will be well worth while:

DIY Audio Projects Forum • Super simple single stage tube preamp

retro-thermionic: 4S Universal valve preamp in a Tea box (4SUTea)

retro-thermionic: Universal - 4S preamp MKIV

retro-thermionic: The Black - 4S preamp MKIII

retro-thermionic: Single Stage Tube Preamp MKII

retro-thermionic: Single Stage Tube preamp
  Reply With Quote
Old 8th October 2013, 08:51 PM   #2544
diyAudio Member
 
Bixbacon's Avatar
 
Join Date: Apr 2012
Location: Australia
Thanks for that, I'll keep you posted


Bix
__________________
Its not worth saying, if it's not heard wright.
  Reply With Quote
Old 18th October 2013, 07:05 AM   #2545
Mihkus is offline Mihkus  Estonia
diyAudio Member
 
Mihkus's Avatar
 
Join Date: Jul 2012
Location: Estonia, Viljandi
Ohh hell yeah a working amp made of vintage parts...
Sorrry for rubbish quality

Chip in use: LA4140 Sounds good but has pretty freakin loud mains noise problem, what can cause this?!

Click the image to open in full size.
capture
  Reply With Quote
Old 18th October 2013, 02:06 PM   #2546
udailey is offline udailey  United States
diyAudio Member
 
Join Date: Mar 2008
??
View topic - possible bad batch of LA4140! • adafruit industries • Customer Support Forums, DIY Electronics, Open Source Hardware, Arduino
__________________
purchase LDRs anytime Also try my Resistor Replacers or LDR based Input Selector Email me. diyldr@gmail.com
  Reply With Quote
Old 18th October 2013, 02:35 PM   #2547
Mihkus is offline Mihkus  Estonia
diyAudio Member
 
Mihkus's Avatar
 
Join Date: Jul 2012
Location: Estonia, Viljandi
I have 2L8 with shiny package not muddy crap shown on the picture...

Got 8 of them, and going to make PCB and will try them as headphone amp.

Last edited by Mihkus; 18th October 2013 at 02:44 PM.
  Reply With Quote
Old 29th October 2013, 04:14 AM   #2548
diyAudio Member
 
Join Date: Apr 2010
I just pulled my LM3875 out if retirement for the day and am blown away at how good this sounds. I recall thinking it was a little light on the bottom end - but listening now it totally belies belief. It's fed by a Teddy Powerreg at 28.5V regulated rails and some tests I did today confirm just now effective the regulation is. It runs through an X-10D clone buffer with genalex gold lion 6922 valves and an alps blue velvet 10 ohm pot.
Lovely sound - detailed full and very easy to listen to.
Click the image to open in full size.
  Reply With Quote
Old 29th October 2013, 11:00 AM   #2549
diyAudio Member
 
mhouston's Avatar
 
Join Date: Jan 2006
Location: Victoria, Australia
Just built and tube and chips amp myself. Found it sounded even better with a tube preamp. Nice build.
  Reply With Quote
Old 29th October 2013, 01:25 PM   #2550
diyAudio Member
 
Join Date: Jan 2012
Location: Canada
Quote:
Originally Posted by ajst2duk View Post
I just pulled my LM3875 out if retirement for the day and am blown away at how good this sounds. I recall thinking it was a little light on the bottom end - but listening now it totally belies belief. It's fed by a Teddy Powerreg at 28.5V regulated rails and some tests I did today confirm just now effective the regulation is. It runs through an X-10D clone buffer with genalex gold lion 6922 valves and an alps blue velvet 10 ohm pot.
Lovely sound - detailed full and very easy to listen to.
That is a nice and straightforward looking build. Clean and easy to follow (even with the blurry cell phone picture). How long has it been in retirement?

I switch things around. A lot. Too much for my wife to not notice and shake her head at me. Things (old and new) always sound much more different when you play audio through just one amplifier for a long time. Listening "fatigue" is what I call it and you start to favour one type more and more and you forget what the others sound like because your ears get too used to that one sound you are using.

Swapping it out with regularity keeps this condition away.

And that is the argument/reasoning I use when a new project, new amplifier, new vintage stereo, set of tubes, or a new set of boards and parts come rolling in. So build more amplifiers!
  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



New To Site? Need Help?

All times are GMT. The time now is 05:17 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