[sdiy] Re: [AH] EMS Synthi AKS capacitor count

[Steve Thomas]

Hi all..I thought it is that weird 6-legged IC MFC6070 ? ..at least 
looking at my board A schematics and the board A on my VCS3 mkII ..it's 
the same position as in the pic. I seem to recall its part of the reverb 
driver circuit. Actually on my VCS3 board A there is no heatsink on this 
chip..maybe there should be?

cheers
steve thomas

On Sun, 12 Nov 2006, Magnus Danielson wrote:

> From: Jay <synthbaron at tampabay.rr.com>
> Subject: Re: [sdiy] Re: [AH] EMS Synthi AKS capacitor count
> Date: Sat, 11 Nov 2006 18:03:35 -0500
> Message-ID: <455656C7.2000200 at tampabay.rr.com>
> 
> > RMC wrote:
> > >> http://www.richardcraven.plus.com/EMS/whatisit.jpg
> > >>
> > >> That's a design bug.
> > > 
> > > It's certainly odd. An optocoupler or something?
> > 
> > Dual divider chip?
> > 
> > http://www.organservice.com/crm/topdividers.htm#Fig10
> 
> No.
> 
> It is a pair of transistors being thermically matched up to each other.
> By the look of things, I wonder if this is not the spring-reverb drive amp.
> Card A is PSU and output amps (Output 1, Output 2 and Spring-Reverb) as well
> as the Spring-Reverb receive amp.
> 
> It is a Mark II version definitly, the Mark I had a total layout altogether.
> 
> Cheers,
> Magnus
>