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

Solid State Talk all about solid state amplification.

Hifisonix kx-Amplifier
Hifisonix kx-Amplifier
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 9th November 2019, 04:12 PM   #171
princetemi is offline princetemi  Poland
diyAudio Member
 
Join Date: Dec 2017
I've almost finished. Hardest part was to cut radiators and make holes. I have not threaded them
Just 3 questions:
1. Is there any startup procedure? I will use cl90 on primary thermistor for slow start, later I'll bypass with timed relay.
2. I have 0.5uH coils, can i put them into pcb? I have only 1mm dia quite to make new one. what do they do.?
3. C4 on input is a bipolar cap. What is best there? Any recommendation up to 25$ for 2.
  Reply With Quote
Old 9th November 2019, 04:18 PM   #172
Marra is offline Marra  United Kingdom
diyAudio Member
 
Join Date: Nov 2009
Location: Near Lincoln
Hifisonix kx-Amplifier
I used Nichicon ES bipolars. Very pleased with the resulting sound of my amp.

Nichicon ES Type | Hifi Collective
  Reply With Quote
Old 9th November 2019, 07:16 PM   #173
princetemi is offline princetemi  Poland
diyAudio Member
 
Join Date: Dec 2017
What about remaining 2(TWO big) questions left?
  Reply With Quote
Old 9th November 2019, 07:25 PM   #174
Trelolelo is offline Trelolelo  Slovakia
diyAudio Member
 
Join Date: Dec 2004
Location: Trnava District
Default hi all ...the end of the assembly is so so near

I have good news, the electric assembly was done...amplifier working...need to finish the housing...but only tomorrow....I am tired...
Attached Images
File Type: jpg Class A mode.jpg (206.9 KB, 173 views)
File Type: jpg Class AAB mode.jpg (196.1 KB, 177 views)
File Type: jpg Internal view 1.jpg (388.3 KB, 170 views)
  Reply With Quote
Old 9th November 2019, 10:15 PM   #175
Bonsai is offline Bonsai  Europe
diyAudio Member
 
Bonsai's Avatar
 
Join Date: Jul 2003
Location: Europe
Beautiful !

Please let us know if it is completely hum free.
  Reply With Quote
Old 10th November 2019, 03:29 PM   #176
Trelolelo is offline Trelolelo  Slovakia
diyAudio Member
 
Join Date: Dec 2004
Location: Trnava District
Thumbs up Answer to Bonsai aka Mr.Russel

Hello Mr.Russel. The amp sounding amazingly, but I ordered toroids from "crap" company, they are hum so much.The speakers are quiet, but not absolutely, need to play with wire traces ect...I will order toroids from Poland /audio grade kind/ then I will make some upgrades. Would like to build inside an audio buffer from customworks.cz. My question is: Better to feed with power this audio buffer from separate supply or made voltage stabiliser feeded from main supply of amplifier? Best Regards and thx for this amazing schematic....
  Reply With Quote
Old 10th November 2019, 03:54 PM   #177
poseidonsvoice is offline poseidonsvoice  United States
diyAudio Member
 
poseidonsvoice's Avatar
 
Join Date: Jul 2004
Location: North Carolina
Hifisonix kx-Amplifier
Hi!

I personally would design a small separate supply since it appears that this audio buffer requires a bipolar +/- 12 to +/- 15V supply. Linear or very clean switcher. Many options there. I do this a lot in my own builds since I use balanced/differential inputs. There are also other options for an input buffer such as AMB Audio alpha 24 and also Neurochrome’s new buffer which will be coming soon (all SMD and fully built).

Here is the link to the buffer from the OP:

Audio buffer

Best,
Anand.
__________________
Science is not a democracy - Earl Geddes
DIYAudio is a journey not a destination!
  Reply With Quote
Old 15th November 2019, 12:01 AM   #178
princetemi is offline princetemi  Poland
diyAudio Member
 
Join Date: Dec 2017
As my first question Is unanswered, I've made risk start after populating pcb. No special measurement done. Still have to set bias point.
My second question regarding coil is forgotten too.

Here's my FrankenAmpen
Attached Images
File Type: jpg 20191115_004530.jpg (847.1 KB, 98 views)
  Reply With Quote
Old 15th November 2019, 09:42 AM   #179
Trelolelo is offline Trelolelo  Slovakia
diyAudio Member
 
Join Date: Dec 2004
Location: Trnava District
Default I will try to answer to You

Quote:
Originally Posted by princetemi View Post
As my first question Is unanswered, I've made risk start after populating pcb. No special measurement done. Still have to set bias point.
My second question regarding coil is forgotten too.

Here's my FrankenAmpen
Question 1: Before powering up, I have interchange the main fuses 5A/T to classic light bulbs /200W-230V type/ these bulbs are connected to the blowed "old" fuses with wires...bulbs limiting the flowing current, if something go wrong...then,if amplifier pass this first check, I replace this "live it up" instrument with predescribed fuses, and doing more tests...
Question 2: coil, create a new one, its a simple and easy...create coil, which is described in the building manual....cheers...
  Reply With Quote

Reply


Hifisonix kx-AmplifierHide 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
Hypex SMPS400 + 2x UCD180 wiring (DC error, Auto Amplifier Enable, Amplifier Standby) maxw Class D 48 26th May 2017 07:47 PM
Boss NXD3500 car amplifier hooked to an Onkyo 7.2ch home amplifier Evolver Class D 0 20th August 2016 01:57 AM
hifisonix small signal class a? mlackey Headphone Systems 1 1st January 2016 03:16 AM
Motional feedback amplifier based on Philips 40 wats amplifier 1970s sanbadgujar Solid State 14 13th October 2013 02:35 PM
JLH Chiarra or Hifisonix Class A buffer? MondyT Headphone Systems 2 30th January 2013 05:14 PM


New To Site? Need Help?

All times are GMT. The time now is 03:51 AM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.00%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Copyright ©1999-2019 diyAudio
Wiki