Re: Chassis Types



"Stephen" <jeryn3@xxxxxxxxxxx> wrote in message
news:guAnj.39388$75.10603@xxxxxxxxxxx
Hi Gents, Getting ready for another project and I wanted to solicit
opinions on the pros and cons of an aluminum vs. steel chassis, both large
and small. I think we discuss this a few years ago but I also think it
would
be nice to do it again. Thanks.


Hi West. A very old friend of mine, the chap who started me off
in tube audio when I was very young, used to work in a smallish
audio prototype shop in the UK. He advised me "Always keep
the prototype.It is usually built in an aluminium chassis and may
perform marginally better than the steel production units"

Of late, I have given up using Hammond-type box chassis,
even though I have access to a metal bender. I prefer the
"slab design" with separate plates top and bottom, sides,
bck and front. I use 10mm anodised alum for the front plate,
6mm for the rear panel, 8mm for the sided, and 3mm for
top and bottom plates, and 3mm stainless steel for the
grilles.

http://www.kolumbus.fi/iain.churches/Pics/203Pics/04A.jpg

You have to remember that anodising insulates one plate
from the other, so screw holes and threads should have
plastric machine screws fitted before the plates go to
be anodised. For practical reasons, I use a copper
U-shaped inner chassis to which the outer panels are
subsequently fixed. You can see the copper in this pic.

http://www.kolumbus.fi/iain.churches/Pics/203Pics/05A.jpg


Cordially,

Iain






.

Relevant Pages

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  • Re: Chassis Types
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