You might want to check out the Soundsweet speaker at
http://www.soundssweet.com/
It is just what you describe and is designed for communications audio (HAM /
SWL). It's a bit large compared to the speakers with rig matching
enclosures, but it does sound nice.
Mark
----- Original Message -----
From: "Rob Atkinson, K5UJ" <k5uj@hotmail.com>
To: <tentec@contesting.com>
Cc: <k5uj@hotmail.com>; <kd7efq62@hotmail.com>
Sent: Friday, August 01, 2003 1:32 PM
Subject: [TenTec] Re: 2 minor comments: Speakers and Centurion
> Hi Todd;
>
> The foam is speaker enclosure baffling material. It's used to lengthen
the
> space the sound has to travel through without increasing the size of the
> cabinet. This is a method used in cabinet design and is often found in
> stereo speakers. Baffling flattens the frequency response of the unit and
> boosts the bass response slightly. If you have an old speaker in a
cabinet
> you can try buying some foam rubber at a hobby/crafts shop, cutting it to
> fit across the inside of the cabinet and put it in behind the speaker and
> hear the difference. Large bass speakers with cones that move a lot will
> need an air tube exiting from behind the speaker either through the
baffling
> or through the front to equalize the cabinet air pressure when the cone
> moves suddenly. I doubt if this kind of speaker is used in ham radio
> however.
>
> 73,
>
> Rob
> K5UJ
>
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