[Amps] Nice new japanese tube amp

[Jim Thomson]

Date: Thu, 8 Jun 2017 10:13:53 +0100
From: Chris Wilson <chris at chriswilson.tv>
To: amps at contesting.com
Subject: Re: [Amps] Nice new japanese tube amp


##  You can no doubt buy it without the tube...or the entire  B+ supply. 
Henry offered those options on their 8k- Ultra.  The part that baffles me is their 
use of fixed C for the C2 load cap.   How does that even work ?    All he has
is a variable tune cap, and a roller coil....and a mess of vac relay switched fixed
load caps.   Ok, with 6 x vac relays,  they end up with enough combinations obtain
any C you want.  Thats one helluva expensive way to do it.  They look like 6 x gigavac
G2 relays. 

##  JA6TAY  does that quite often on his myriad of different amps, but not always. 

Later... Jim  VE7RF  






<Hello Jim,


A modern Henry, looks very nice, shakes piggy bank, shakes head.


On Thursday, June 8, 2017,  you wrote:



> http://www.kojinsha.jp/kl-1/index.html  click on the english
> version.    They even have a mating u tube video.   
> https://www.youtube.com/watch?v=PZPayCo9xkc
> He doesn?t  quite hit the needle to the end, but good enough for
> the drive level involved.   Loads of pre-sets etc.   Appears to use
> a motor driven vac cap and mating roller.
> The ....load cap appears to be a mess of vac relay switched fixed caps.

> Weighs 235 lbs.   $10K.   Bargain vs some of these megabuck SS amps. 

> Jim  VE7RF





-- 
Best regards,
Chris                            mailto:chris at chriswilson.tv