Speaker enclosures

Bill Rehm · Post by **Bill Rehm** » Wed Dec 08, 2004 11:26 am

A while back I recall a brief discussion on enclosures for audio
speakers and the what and whys regarding them.

Can someone refresh my Alzheimer memory and give me a repeat synopsis? I
want to use a small plastic tub (from some oysters I bought as the
enclosure for my new headrest speakers.

Regards
Bill

Bill Rehm · Post by **Bill Rehm** » Wed Dec 08, 2004 2:00 pm

A while back I recall a brief discussion on creating enclosures for car
audio speakers and the what and whys regarding the benefits of them.

Can someone refresh my Alzheimer memory and give me a repeat synopsis? I
want to use a small plastic tub (from some oysters I bought) as the
enclosure for my new headrest speakers.

Regards
Bill

Bill Rehm · Post by **Bill Rehm** » Wed Dec 08, 2004 6:30 pm

Jeff what would be the effect of cementing/adhering the speaker to the
tub without "stuffing it with anything?

Regards
Bill

EricW · Post by **EricW** » Wed Dec 08, 2004 7:02 pm

Hi Bill,

I did post a note remarking that quite a few years back I used a couple of
round margarine tubs for this purpose, That worked fine

Eric

Bill Rehm · Post by **Bill Rehm** » Wed Dec 08, 2004 8:22 pm

Too complicated for me. Perhaps I'll throw a few "cotton balls" in the
empty space and "cross my fingers" :>)

Regards
Bill

poison · Post by **poison** » Wed Dec 08, 2004 10:01 pm

Hi Bill

'twas I, and I used some 75mm PVC down pipe I used a hot air paint strip gun
to heat it up then push it onto the back of the speaker (as about 5mm too
small) and let it cool in place. The pulled off and cut to length. I then used
the heat gun to roll out some flat pieces, cut these into circles with
scissors and glued them to the back of the PVC tube and there you have a semi
ideal (small but sealed) enclosure. The sound was MUCH better with the
enclosure, could get much higher volumes without distortion.

Good Luck,

Gazza
"PO1SON"

PS: I'm on the shore too if you need a loan of the heat gun.

Bill Rehm · Post by **Bill Rehm** » Thu Dec 09, 2004 8:13 am

I'm going to go with the plastic tubs I have/ am getting. Probably not
as thick/ridged as your boxes so more possible vibration but assuming
they are held securely in place with all the surrounding foam, I'll give
them a go.
Would appreciate some assistance with the installation if you would be
open to that possibility? (or assistance from anyone else that has
installation experience/knowledge)

Regards
Bill

Voodoo · Post by **Voodoo** » Fri Dec 10, 2004 6:31 pm

To add unnecessary info Vas is the equivalent volume of compliance. But
these little bug*ers aren't going to care about this. All you want to do
is lose the back-wave so the bass doesn't cancel, it will drop off, but
a speaker that size can't really make any bass anyway.

Gary

On Wed, 8 Dec 2004 18:56:11 +1300, ~Jeff~ wrote:

the polyfill acts to increase the volume that the speaker "sees".
Greater damping effect, or somethink...

http://www.google.com/search?q=polyfill ... 8&oe=utf-8

speakers typically have an ideal enclosed air volume which complements
the speakers' physical/electrical properties. IIRC the figure to look
for on the box is Vas.

hope that helps!

On Wed, 08 Dec 2004 18:30:47 +1300, Bill Rehm <bill@kase.co.nz> wrote:

Jeff what would be the effect of cementing/adhering the speaker to the
tub without "stuffing it with anything?

Regards
Bill

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