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

Headphone Systems Everything to do with Headphones

GERMANIUM Single ended Class A Headphone Amp.
GERMANIUM Single ended Class A Headphone Amp.
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 13th June 2018, 10:41 AM   #91
merlin el mago is offline merlin el mago
diyAudio Member
 
merlin el mago's Avatar
 
Join Date: Sep 2009
Location: Catalonia - Europe
Mooly what's the final schematic? I guess the load can be high impedance hp 300 ohms? What about the sound, isn't the same as silicon right? What are the better GE parts for the circuit?

Last edited by merlin el mago; 13th June 2018 at 10:45 AM.
  Reply With Quote
Old 13th June 2018, 11:26 AM   #92
Mooly is offline Mooly  United Kingdom
diyAudio Moderator
 
Mooly's Avatar
 
Join Date: Sep 2007
GERMANIUM Single ended Class A Headphone Amp.
Circuit is as per post #1 and used the devices that I had available. There are many devices that would prove suitable but it would (as always with something like this) be a case of trying them out.

High impedance phones might be limited due to the relatively low output voltage available. Realistically you could only expect around 10mw into that kind of impedance.
  Reply With Quote
Old 13th June 2018, 02:56 PM   #93
Dibya is online now Dibya
diyAudio Member
 
Join Date: Apr 2018
Location: Inside your preamplifier
DSI Germany still make germanium transistor . NTE is still making .
Acidfuzz is secretely making their own germanium transistor.
Motorola is secretly making oc series transistor in China . Don't be excited they sounds **** in comparison to mullard ,valvo and Phillips.
BEL in India is still making AC and AF series transistor .
Mistry solved.
Last month I brought ac128 for my guitar pedals. After some time even they are claimed new old stock they seems like brand new. w. After that I tried to solve the mistry.
  Reply With Quote
Old 13th June 2018, 03:01 PM   #94
merlin el mago is offline merlin el mago
diyAudio Member
 
merlin el mago's Avatar
 
Join Date: Sep 2009
Location: Catalonia - Europe
Quote:
Originally Posted by Mooly View Post
Circuit is as per post #1 and used the devices that I had available. There are many devices that would prove suitable but it would (as always with something like this) be a case of trying them out.

High impedance phones might be limited due to the relatively low output voltage available. Realistically you could only expect around 10mw into that kind of impedance.
Thanks Mooly.
  Reply With Quote
Old 13th June 2018, 03:25 PM   #95
Dibya is online now Dibya
diyAudio Member
 
Join Date: Apr 2018
Location: Inside your preamplifier
Hi guys and gals if I want to replace AC125 with NTE alternative ? Which one should I choose.
  Reply With Quote
Old 18th June 2018, 08:21 AM   #96
Dibya is online now Dibya
diyAudio Member
 
Join Date: Apr 2018
Location: Inside your preamplifier
I am unable to find ACY121 . Where can I get it?
  Reply With Quote

Reply


GERMANIUM Single ended Class A Headphone Amp.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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
push pull Vs single ended class A amp space2000 Solid State 25 23rd August 2008 03:31 PM
Single ended amp from class A push-pull Wavebourn Tubes / Valves 2 12th October 2007 09:14 PM
Proposal On Single Ended Class-D Subwoofer Amp kASD Class D 8 27th January 2004 09:11 AM


New To Site? Need Help?

All times are GMT. The time now is 02:53 PM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.00%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio
Wiki