RE: [AH] MatrixBrute opinions?

From Lorne Hammond
Sent Mon, Oct 15th 2018, 13:28

well these are multilayer pcbs with microscopic tolerances, its not like =
working around traces on an older analog board.
next gen stuff. I might be wrong.  lorne =20

-----Original Message-----
From: el macaco <xxxxxxxx@xxxxxxx.xxx>=20
Sent: October-15-18 1:20 AM
To: Lorne Hammond <xxxxxxxx@xxxx.xx>
Cc: Brian Willoughby <xxxxxx@xxxxxxxxxxxx.xxx>; Scott Fox =
<xxxxxxxxx@xxxxx.xxx>; Analog Heaven <xxxxxxxx@xxxxxxxxx.xxx>
Subject: Re: [AH] MatrixBrute opinions?

If that was the case you could cut the trace and run ground insulated =
wire for the connection.  I imagine it=E2=80=99s something larger.

> On Oct 15, 2018, at 12:13 AM, Lorne Hammond <xxxxxxxx@xxxx.xx> wrote:
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> i thought is was because a trace had to pass fairly close to part of=20
> the (filter?) circuit and when they looked at the pcb board layout =
they realized they were too close, but it being fairly complex and tight =
they decided they had to live with it and if your playing it is not =
noticeable but its there when you are not playing? Does that spound =
right to anyone else?.
> Not bad engineering just a compromise in board layout.  Broke a pcb =
trace layout rule to achieve some other needs.
>=20
> lorne
>=20
> -----Original Message-----
> From: Brian Willoughby <xxxxxx@xxxxxxxxxxxx.xxx>
> Sent: October-14-18 2:26 PM
> To: Scott Fox <xxxxxxxxx@xxxxx.xxx>
> Cc: Analog Heaven <xxxxxxxx@xxxxxxxxx.xxx>
> Subject: Re: [AH] MatrixBrute opinions?
>=20
> Thanks for the review.
>=20
> I assume that you mean high noise to signal ratio, or low signal to =
noise. Basically, your description is telling me that this thing has a =
high noise floor, and the various distortion/gain stages conspire to =
make that worse. Apparently, nothing can be done about this ever-present =
noise, even with the gain settings toned down.
>=20
> Sounds like a description of a vintage synth - especially one with =
chorus (although this one doesn=E2=80=99t).
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> Brian
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>> On Oct 14, 2018, at 8:44 AM, Scott Fox <xxxxxxxxx@xxxxx.xxx> wrote:
>> =E2=80=A2The architecture and number of gain stages and distortions =
give the machine a fairly high signal to noise ratio. Even with all =
filters closed, oscillator levels at 0, filter outputs down and so on, =
my machine gives off a wee bit of noise. Depending on what you're doing, =
this can get pretty noticable in the synth. I've experience this across =
multiple units and what I wrote on this point was pretty much Arturia's =
summation of its noise in my messages with them. Basically, it's a part =
of the machine. Take it how you will. It hasn't been much of a problem =
for me but it does but some people whom favor a pristine sound.=20
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