Post your Solid State pics here. - Page 130 - 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 21st February 2010, 10:13 PM   #1291
diyAudio Member
 
apexaudio's Avatar
 
Join Date: Feb 2010
Location: Serbia
Default APEXaudio

My work 1990.
Attached Images
File Type: jpg apex preamp (4).jpg (151.5 KB, 1804 views)
File Type: jpg apex power (6).jpg (56.8 KB, 1720 views)
File Type: jpg apex preamp (5).jpg (51.2 KB, 1492 views)
  Reply With Quote
Old 24th February 2010, 11:56 AM   #1292
diyAudio Member
 
Captain archer's Avatar
 
Join Date: Apr 2004
Location: Weert
Send a message via MSN to Captain archer
Default My Retro amp project back to the 70's

Hello,

I recently finnished my retro style amp.
It is an current feedback amp on a single voltage rail of ~ 52v.
All driver and pre transistors are BC141-16 BC161-16.
Power transistors are ST MJ2955
The heatsink is from an old Philips X-ray power supply from 1966, originaly it had 4 germanium power devices on it.
The transformer is from an old philips reciever and i painted it black and re- applied the top wiring.
It puts out ~ 52v at 2.5 amps and this is regulated and then buffered by a 10,000 Uf capacitor.
The same capacitors are also used as output decoupling.
This amp is obviously not build for perfect sound reproduction but mere for the sake of old times though it sound very nice for what it is and put out alot of power.

I will post some pics of the build feel free to give your opinion
Attached Images
File Type: jpg Front.JPG (84.4 KB, 1334 views)
File Type: jpg Back.JPG (101.2 KB, 1140 views)
File Type: jpg Circuit.JPG (101.8 KB, 372 views)
File Type: jpg Inside1.JPG (114.5 KB, 619 views)
File Type: jpg Inside2.JPG (106.6 KB, 807 views)
File Type: jpg Inside3.JPG (98.3 KB, 679 views)
File Type: jpg Inside4.JPG (96.3 KB, 435 views)
File Type: jpg Painting.jpg (67.0 KB, 483 views)
File Type: jpg Heatsink.JPG (82.4 KB, 457 views)
  Reply With Quote
Old 24th February 2010, 05:45 PM   #1293
diyAudio Member
 
Captain archer's Avatar
 
Join Date: Apr 2004
Location: Weert
Send a message via MSN to Captain archer
Default Another one of my Retro projects

This is a 2x5 watt Amp based on germanium devices.
I have build this little amp 1 year before the amp in the post above thats why it resembles it in some kind (the copper revets for example).
It has a kind of warm round sound to it, though 5 watts is enough for easy listening, it lacks power when it comes to having a party or whatever.
So thats why i have build the amp in the post above.
That one delivers 30 watts per channel.
It only uses a BC154P gold pin low noise silicium transistor as preamplifier.

The rest is based on AD161 and AD141

Please comment on this little computer amplifier
Attached Images
File Type: jpg DSCF3018.JPG (93.8 KB, 345 views)
File Type: jpg DSCF3021.JPG (70.5 KB, 177 views)
File Type: jpg DSCF3026.JPG (104.3 KB, 447 views)
File Type: jpg DSCF3027.JPG (109.4 KB, 583 views)
File Type: jpg DSCF3029.JPG (105.7 KB, 454 views)
  Reply With Quote
Old 25th February 2010, 10:03 AM   #1294
Bonsai is offline Bonsai  Taiwan
diyAudio Member
 
Bonsai's Avatar
 
Join Date: Jul 2003
Location: Taipei, Taiwan
Wow - AD161 and 162 - now thats going back. I remember when I was a kid seeing a 10W amp in Practical Wireless (I think) using these devices - circuit wa s built an Veroboard. Happy listening - will you publish circuits?
__________________
bonsai
Amplifier Design and Construction for MUSIC! http://hifisonix.com/
  Reply With Quote
Old 25th February 2010, 10:16 AM   #1295
diyAudio Member
 
east electronics's Avatar
 
Join Date: Jan 2006
Location: Athens GREECE
here is another toy ...a passive preamp with relay selector and shunt topology .... extremelly ultra quiet

enjoy the cassing ...its all hand made
curved grey aluminium glass on a top and wood on the sides metalized paint
Attached Images
File Type: jpg passive back.JPG (121.0 KB, 498 views)
__________________
SERVICE ΕΝΙΣΧΥΤΩΝ ΚΑΙ ΙΑΠΩΝΙΚΩΝ ΜΗΧΑΝΗΜΑΤΩΝ ΗΧΟΥ www.eastelectronics.gr
  Reply With Quote
Old 25th February 2010, 10:19 AM   #1296
diyAudio Member
 
east electronics's Avatar
 
Join Date: Jan 2006
Location: Athens GREECE
one more
Attached Images
File Type: jpg passive%20front.JPG (90.9 KB, 553 views)
__________________
SERVICE ΕΝΙΣΧΥΤΩΝ ΚΑΙ ΙΑΠΩΝΙΚΩΝ ΜΗΧΑΝΗΜΑΤΩΝ ΗΧΟΥ www.eastelectronics.gr
  Reply With Quote
Old 25th February 2010, 10:25 AM   #1297
diyAudio Member
 
Captain archer's Avatar
 
Join Date: Apr 2004
Location: Weert
Send a message via MSN to Captain archer
Default Circuits

I will draw the cuircuit for these amplifiers give me some time and i will post the circuits fot both amplifiers.

I am currently working on an RIAA Phono extension for the power amplifier in the first post.
This Phono preamp will be based on an 45 year old RIAA Cuircuit from an Japanese REC Amplifier.
The original cuircuit was based on some old 2SAxxx and 2SCxxx transistors but i am modifying the cuitcuit to work with the nostalgic bc149c Gold pin low noise transisitors from National Semiconductor

Keep you posted
  Reply With Quote
Old 25th February 2010, 04:14 PM   #1298
diyAudio Member
 
Captain archer's Avatar
 
Join Date: Apr 2004
Location: Weert
Send a message via MSN to Captain archer
Default To Sakis

Well done on the passive preamp

I wish i had the materials to build such project housings
My complements to you
  Reply With Quote
Old 26th February 2010, 08:39 PM   #1299
diyAudio Member
 
apexaudio's Avatar
 
Join Date: Feb 2010
Location: Serbia
Default volume: llllllllllllllllll[]llll max

My mini PA Amp
Attached Images
File Type: jpg P1010418.JPG (807.2 KB, 613 views)
File Type: jpg P1010419.JPG (421.8 KB, 466 views)
File Type: jpg P1010401.JPG (375.9 KB, 596 views)
  Reply With Quote
Old 26th February 2010, 08:50 PM   #1300
diyAudio Member
 
east electronics's Avatar
 
Join Date: Jan 2006
Location: Athens GREECE
Quote:
Originally Posted by Captain archer View Post
Well done on the passive preamp

I wish i had the materials to build such project housings
My complements to you
belive me its very very easy and cost nothing if you need info email me and i will give you direction on how to ....

regards sakis
__________________
SERVICE ΕΝΙΣΧΥΤΩΝ ΚΑΙ ΙΑΠΩΝΙΚΩΝ ΜΗΧΑΝΗΜΑΤΩΝ ΗΧΟΥ www.eastelectronics.gr
  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 12:03 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