[sdiy] Boss/Roland Dimension C/D differences

[JH.]

According to the Boss Book, the Dim C's problem was that the
two BBD circuits had to be in close proximity, and the two
clock circuits creating a "sqealing" noise. This has been solved
with a compander circuit. (paraphrasing)

But ... the Dim D also has a compander circuit.
Maybe it's cleaner, overall.

Now, it would be interesting if the Dim Cs really have high
pitched noise, if you listen closely.
(I haven't - I neither have a C nor D, just a clone.)

JH.



----- Original Message ----- 
From: "Seb Francis" <seb at burnit.co.uk>
To: "Synth DIY" <synth-diy at dropmix.xs4all.nl>
Sent: Monday, April 17, 2006 2:17 PM
Subject: [sdiy] Boss/Roland Dimension C/D differences


> Well, 1 project almost wrapped up, so it's time to start on another :)
> 
> I want to build a clone of the Roland SDD-320 "Dimension D".  I have the 
> schematics of the Dimension C guitar pedal but I can't find the 
> schematics of the Dimension D anywhere.  I'm wondering if it's worth 
> buying the service manual from Roland, or should I just work from the 
> Dimension C schematics .. are these things essentially the same?
> 
> I know the Dimension D has stereo line level inputs as opposed to mono 
> guitar level input, and it has LED level meters.  But I'm not sure about 
> any other differences?  Would anyone care to share the schematic of the 
> Dimension D input stage?
> 
> TIA,
> Seb
> 
> 
> 
>