Author Topic: Slewmaster amp diy  (Read 1933 times)

Offline JANNAS

  • Trade Count: (0)
  • AVForums Veteran
  • ***
  • Posts: 469
Re: Slewmaster amp diy
« Reply #45 on: May 19, 2017, 03:45:38 PM »
Dankie Mars . :)

Offline JANNAS

  • Trade Count: (0)
  • AVForums Veteran
  • ***
  • Posts: 469
Re: Slewmaster amp diy
« Reply #46 on: May 19, 2017, 08:02:38 PM »
Well had a listen to it on bigger speakers. Old Dynaco A50's. Sounds superb. Not biased because it is a new build, but overall, from bass to HF sounds better than my other amps. Nad 214 and Lateral mosfet which is a very good and revealing amp. I suppose it is the CFA frontend that makes the BIG difference and it is much stronger as well. Calibrated the VU meter as well and they look great. Makes all the sweat and swearing worth the while. 43kg's of sweat. Now for some oldish KWV and smiles !!
http://imgur.com/a/sb7ZN
Enjoy the weekend !!

Offline Curlycat

  • Forum Moderator
  • Trade Count: (+49)
  • *****
  • Posts: 2,015
Re: Slewmaster amp diy
« Reply #47 on: May 20, 2017, 09:40:37 AM »
BAIE Mooi!  :notworthy:
Post more pictures please, from the top, sides and back.

Offline JANNAS

  • Trade Count: (0)
  • AVForums Veteran
  • ***
  • Posts: 469
Re: Slewmaster amp diy
« Reply #48 on: May 20, 2017, 10:12:49 AM »

Offline JANNAS

  • Trade Count: (0)
  • AVForums Veteran
  • ***
  • Posts: 469
Re: Slewmaster amp diy
« Reply #49 on: May 28, 2017, 10:50:46 AM »
Had a nasty earth loop that were caused by using one secondary transformer output to power both  DC protection output boards. Solution were to connect each mosfet switch to its own powersupply. Everything is good now.Glad I don't have to move it again soon ! ;D
http://imgur.com/a/O6lm6   

Offline JANNAS

  • Trade Count: (0)
  • AVForums Veteran
  • ***
  • Posts: 469
Re: Slewmaster amp diy
« Reply #50 on: July 02, 2017, 08:18:41 PM »
I have decided to try the front end that the DIY audio.com guy's say is so good. The one that I use now is super good in midrange and high frequencies and not bad in bass but they say the Leach is the one to beat. Many prime amps today are using Leach tech. Well I want to hear what all this fuzz is about. I have just build one front end board to compare with the current KND which I am using now. We will see how it compares.Still have to match transistors and fix driver heatsink. :) http://imgur.com/a/wZAkj

Offline Mars67

  • Trade Count: (+1)
  • AVForums Veteran
  • ***
  • Posts: 360
Re: Slewmaster amp diy
« Reply #51 on: July 04, 2017, 01:19:02 PM »
Jannas jy verstom my!

Offline JANNAS

  • Trade Count: (0)
  • AVForums Veteran
  • ***
  • Posts: 469
Re: Slewmaster amp diy
« Reply #52 on: July 05, 2017, 01:46:30 PM »
Mars, hoe so ! :)

Offline JANNAS

  • Trade Count: (0)
  • AVForums Veteran
  • ***
  • Posts: 469
Re: Slewmaster amp diy
« Reply #53 on: July 05, 2017, 08:10:45 PM »
Finished with component population. Will hopefully get a chance to calibrate the VAS current tomorrow and then it is testing time !! http://imgur.com/a/XnYQx

Offline JANNAS

  • Trade Count: (0)
  • AVForums Veteran
  • ***
  • Posts: 469
Re: Slewmaster amp diy
« Reply #54 on: July 19, 2017, 01:11:16 PM »
Well I have finished the leach frontend IP board and compared it to the Kypton IP. CFA vs VFA topology. The VFA is good with a bit better bass but overall the CFA wins and clarity is the deciding factor. Now I can get peace of mind and start enjoying the music !! :dop:
http://imgur.com/xubGW4M
VFA on left and CFA on the right.
Now I can start with the laaities amp. ;D