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

Tubes / Valves All about our sweet vacuum tubes :) Threads about Musical Instrument Amps of all kinds should be in the Instruments & Amps forum

Photo Gallery
Photo Gallery
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 17th September 2018, 09:39 AM   #8451
vuohi is offline vuohi  Finland
diyAudio Member
 
Join Date: Mar 2009
Finally got the PIO caps in the mail, so here's a shot of the guts of the Aikido.
Attached Images
File Type: jpg 5.jpg (190.2 KB, 1022 views)
File Type: jpg 6.jpg (91.7 KB, 1024 views)
File Type: jpg 7.jpg (79.8 KB, 1017 views)
  Reply With Quote
Old 17th September 2018, 11:07 AM   #8452
MagicBus is offline MagicBus  Greece
diyAudio Member
 
MagicBus's Avatar
 
Join Date: Aug 2016
Location: Athens, Greece
Vuohi, your work is very inspirational! Could you share details about the materials you used for the chassis? Especially this leather alike finish and the rings at the base of the tubes.
  Reply With Quote
Old 17th September 2018, 12:08 PM   #8453
vuohi is offline vuohi  Finland
diyAudio Member
 
Join Date: Mar 2009
Many thanks,

Sure I can share some details about the build.

The case is made of 1.5mm aluminium sheet and bent on a small sheet metal brake. Technically you could do it using a bench vise and some angle iron as the sheet is pretty easy to bend. The rounded front was done in true ghetto style by bending it by hand over a CO2 cylinder about the size of a large fire extinquisher. The sides of the transformer shield are made of the same stuff but painted black.
The PCB is mounted on a separate sheet because I wanted to follow my obsession with no visible screws. The sheet is screwed to the wooden sides of the box. Since the PCB sits pretty deep in the box, I used some noval socket savers to get the tubes higher up out of the enclosure. Not necessary, but looks nicer.

The faux leather is just self-adhesive vinyl. Several brands are available. It's rated for 75C and the hottest spot on the case gets to about 40C after several hours so no problems there. I made the rings out of a solid aluminium bar which I turned on my lathe. They're press fit and glued to the case. The pilot light is pretty much in its original shape. It's a 12V vintage piece meant for automotive dashboard use and I just liked the way it looked, so I polished the lens and cleaned the aluminium ring on the lathe and decided make similar rings for all the other front panel attachments. The headphone socket is a modified Neutrik NYS221 stereo jack. I turned the front flanges off and press fit the aluminium ring on it.

It would be a bit of a stretch to call this a junk box build, but it's not far from it either. All the metal came from the scrapyard for 10 and I have enough left to make at least one more amplifier box. The enclosure materials cost me roughly 10 total. Well, 10 and a lot of hours.

The transformers were sourced from discarded equipment. The main transformer was made in Switzerland and the smaller one was made in Finland. Only the Hammond (made in Canada) choke is almost new. I've had it for a long time and I've used it in some test builds but now it found a home in this amp.
  Reply With Quote
Old 17th September 2018, 12:52 PM   #8454
Professor is offline Professor  Russian Federation
diyAudio Member
 
Professor's Avatar
 
Join Date: Sep 2005
Location: Electrostal, Moscow region
Quote:
Originally Posted by qiuchun63 View Post
The inside picture
An elegant solution for mounting capacitors!
__________________
http://mymegahobby.jimdo.com/
  Reply With Quote
Old 17th September 2018, 02:59 PM   #8455
MagicBus is offline MagicBus  Greece
diyAudio Member
 
MagicBus's Avatar
 
Join Date: Aug 2016
Location: Athens, Greece
Quote:
Originally Posted by vuohi View Post
...
It would be a bit of a stretch to call this a junk box build, but it's not far from it either. All the metal came from the scrapyard for 10 and I have enough left to make at least one more amplifier box. The enclosure materials cost me roughly 10 total. Well, 10 and a lot of hours.
...

Thank you! Just my philosophy. Very nice!
  Reply With Quote
Old 20th September 2018, 12:47 PM   #8456
ForsbackaKalle is offline ForsbackaKalle  Sweden
diyAudio Member
 
Join Date: Feb 2017
Location: Forsbacka in middle Sweden
Default ECC88 Headphone Amp

Tube headphone amp with som ECC88 tubes and Edcor xsm10K/150. Works great with setparate boxes and with my Rega DAC. Driving Sennheiser HD600
Attached Images
File Type: jpg Headphone rigg.jpg (301.1 KB, 757 views)
  Reply With Quote
Old 21st September 2018, 02:53 PM   #8457
hpeter is offline hpeter  Slovakia
diyAudio Member
 
hpeter's Avatar
 
Join Date: Feb 2013
Location: Electrostats or bust
Quote:
Originally Posted by mkane77g View Post
TSE - EML 45

i am thinking bout buying myself xmas present - 2a3 meshes. you satisfied with this 45s ?
__________________
BLOG. XMOS_U8/PCM5102A > LL1544A > 6H9C+gyrator > 2A3_SOV/JJ > LL1660 > STAX SR207 _ SR L300 _ SR007 # LL2748 > 394A > LC 12H/1000
  Reply With Quote
Old 21st September 2018, 07:59 PM   #8458
Lingwendil is online now Lingwendil  United States
Now with high-fructose ASSAULT-gluten!
diyAudio Member
 
Lingwendil's Avatar
 
Join Date: Apr 2008
Location: Oakley California
Photo Gallery
Quote:
Originally Posted by ForsbackaKalle View Post
Tube headphone amp with som ECC88 tubes and Edcor xsm10K/150. Works great with setparate boxes and with my Rega DAC. Driving Sennheiser HD600
I like it. Very community-college electronics-lab looking! Fond memories of gear that simple!
__________________
Check out My 6SN7 Push-pull Flea Amplifier project! PCB COMING SOON!
  Reply With Quote
Old 25th September 2018, 11:37 AM   #8459
wdecho is offline wdecho  United States
diyAudio Member
 
Join Date: Oct 2014
Photo Gallery
I finished a new build yesterday, a SET KT-88 amplifier based on a proven design by Michael Abdullah. I only had an hour of so to listen with it but it does sound really good. I actually had this design built on a bud case but decided to give it a new pretty home.
Attached Images
File Type: jpg P1030808.JPG (552.9 KB, 512 views)
  Reply With Quote
Old 25th September 2018, 01:30 PM   #8460
JonasKarud is offline JonasKarud  Sweden
diyAudio Member
 
JonasKarud's Avatar
 
Join Date: May 2008
Location: Malm
Head1962, I can see in the picture from Your mancave that You have a Ceramic High Voltage Insulator dangling to the right, I presume this is for incoming voltage for the Amp?
__________________
Reality is just a word....
  Reply With Quote

Reply


Photo GalleryHide 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


New To Site? Need Help?

All times are GMT. The time now is 01:23 PM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 14.29%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio
Wiki