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

Point to Point SET KT88/6550 Build
Point to Point SET KT88/6550 Build
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
Thread Tools Search this Thread
Old 31st March 2013, 02:20 PM   #1
cgraf is offline cgraf  Switzerland
diyAudio Member
cgraf's Avatar
Join Date: Jan 2011
Location: Geneva
Default Point to Point SET KT88/6550 Build

Hi Guys
As more as I try to inform myself as more I get lost ...

After a few nice builds using pcb boards I would like to build an amp using poing-to-point wiring for my next build.
As I don't need a lot of power I thought to build an amp around KT88 tubes, but single ended. Iron to be defined, thought about Tango or Silk will see.

During my searches I found two designs I like: One is from Doug Tuthill, the other one from Jean Hiraga who uses a pp design on the first stage.

I would appreciate a lot some advises on the two designs, especially about the difference on the sound (the expected one). The music I hear most is Jazz and Jazz voices.

Thanks a lot and best regards from Geneva

I will attach both schematics for reference.
Attached Images
File Type: png Jean-Hiraga-12AX7-SE-KT88-Tube-Amp-Schematic.png (38.5 KB, 221 views)
File Type: jpg 6550 sch2_by_Doug_Tuthill.jpg (172.5 KB, 220 views)
  Reply With Quote
Old 31st March 2013, 04:57 PM   #2
rmyauck is offline rmyauck  Canada
diyAudio Member
Join Date: Apr 2009
Don't know about those , but this seems to be very popular with UL optional with the schem. in the first post over @ diyaudioprojects.

KT88 SE Abdellah (modified by Alex Gendrano) + AK.. - AudioKarma.org Home Audio Stereo Discussion Forums

Scott17 even went on to build a Kit of it partial or full and everyone really liked the sonics. There is more in diyaudio on it before he came out with the kit.


Last edited by rmyauck; 31st March 2013 at 05:00 PM.
  Reply With Quote


Point to Point SET KT88/6550 BuildHide 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
Point to Point build tips nightanole Construction Tips 3 26th August 2011 02:08 PM
Op point for 6au6/6gu5 in P-G feedback 6550 vanofmonks Tubes / Valves 9 12th September 2010 08:29 PM
Point to Point build info littlerick Chip Amps 8 6th January 2010 11:14 PM
Point to point, from scatch build of the K-12G jmillerdoc Tubes / Valves 0 25th October 2009 12:40 AM
The best bias point for KT88 rossdt Tubes / Valves 0 27th July 2006 06:24 PM

New To Site? Need Help?

All times are GMT. The time now is 02:30 AM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.00%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright ©1999-2017 diyAudio