wrote in message
...
I'm building a box to hold a small compress. Purpose is to mask as
much of the compressor sound as possible. Of course, the compressor
will need to have air intake and output availability.

Can anybody recommend a filter or filter material that reduces noise
transmission but still allows air to pass through it?

Foam rubber open cell, like couch cushions, but this is a bad idea, unless
substantial extra forced ventilation is added. A squirrel cage blower of at
least 1/3 HP would be needed to keep the air inside from overheating. The
other ideas such as baffles will also not allow enough fresh air in to keep
things cool. Look up how many BTU's are produced per amp/volt of
electricity, then multiply that by how many amps your compressor is. Nearly
all of that electrical energy is turned into heat. With an overheated
enclosure, you risk burning out the motor, and seizing the compressor
itself.

I'm with others. Locate it outside, or somewhere where the noise will not
be an issue.
--
Jim in NC


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