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In Reply to: RE: Baffle finish ?? posted by PeterZ on June 18, 2017 at 11:50:50
Hello,
I am basically resizing an Altec Magnificent cabinet down to 9 cu ft for my Altec 604s. That is all vintage 3/4 ply, with walnut veneer, in good condition. I am adding the baffle (dado in) and a center support (dado in) from 3/4 ply (also quite vintage). So at the end of the day this is a 'standard' Altec cabinet with a baffle. Question is - after I blacken it with india ink, is there acoustic merit in lacquering the face of the baffle, or best to leave it 'raw' plywood?
I imagine the baffle people do a lot of experimentation, and if a concensus has been reached on 'finish or not finish baffle' - I would be interested in the merits / drawbacks...
regards -- Roger
Follow Ups:
There is zero, none, nada difference with regard to sound. If you put on a polyurethane or other finish which affects the stiffness of the panel, you 'might' get some measurable change, but it will be very slight.
On musical instruments, such as trumpet - with which I am very familiar, the thin metal is an essential part of the sound and resonates the way the designer wants it to. Adding lacquer and/or plating will affect the sound. But when you're talking about a (hopefully/ideally) non-resonant panel such as your speaker cabinet, the cosmetic finish is irrelevant.
As Richard Blaine said, "ask your wife".
:)
Thanks - saves me a step !!!
No need to ask - I am sure she will be real happy......
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