Ken;
That sounds like a really good idea.
I have been thinking of something similar for my OMNI VI/3 but using
"real" wood (1/4" or so), plus possibly replacing the speaker with one
that has a heavier duty rating. Additionally I will probably design a
small audio amplifier to go inside the power supply that would deliver a
high quality, controlled range, signal to the speaker. This all would
be part of an effort to hopefully produce sound quality approaching
(could never fully achieve) that of the great "boatanchor" receivers of
the '40s and '50s.
If I cannot accomplish this inside of the power supply, then I will
build all of this into a separate custom designed speaker box.
Does anyone know of any web sites where I can gather some additional
information on sound reproduction and speaker design?
Thanks.
Reid, K7YX
Beaverton, OR
______________________________ Reply Separator
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Subject: [TenTec] improved audio from 961 speaker & pwr supply
Author: "ken l. knopp" [SMTP:k7zum@teleport.com] at MSXGATE
To: <tentec@contesting.com>
Date: 12/11/98 6:01 AM
Hi all, i thought that maybe i would share a mod i made about 6 months
or so ago to my ten tec 961 speaker & power supply to get a little bit
better sounding audio and volume
I have had this power supply since 1990 and back then it seemed to
have plenty of output, but since i am getting older (46) it seems that
my hearing just ain't what it used to be ! and have been having a harder
time hearing whats coming out of the speaker. At first i had thought
about maybe getting another speaker with a higher power input to it, but
soon discovered that would be nothing short of impossiable due to the
oval shape of the original speaker. the next thought was to maybe try
another small audio amp to boost the output, but that speaker itself
will not take much more than what is already being put into it.
The next thought was to actually take it apart and see if maybe i
could "box" the speaker in, actually enclose the speaker inside of a
box, just like making stereo speaker boxes.and in this way i reasoned
that instead of all of that sound getting lost rattling and bouncing off
of all of the components and transformer inside of the power supply, i
could force the sound to come to my "deaf ears" so, With a little bit of
sawing, filing and fitting, i actually formed a box around the inside of
the speaker, it only took about an hour or so, and did make a rather
pleasant improvement, and best of all, didn't cost a penny, as i had the
materials laying out in the garage (i just knew that piece of masonite
that i had bought ten years or so ago would come in handy some day!)
The whole project consists of four pieces of 3/16" masonite,(you
could use what ever you have laying around!)acutally, you can make five
pieces if you want to box in the bottom to. I'll give the dimemsions
below,and if you cut the pieces a little big, then file to fit,you will
see that they will only fit one way ! with the two side pieces fitting
between the four (two per side)speaker screws protruding out the back
side of the speaker face .
one back piece 5"x3-5/8"x3/16"
two side pieces, left and right side 3-5/8"x1-5/16"x3/16"
one top piece 4-13/16"x1-5/8"x3/16"
you can put in the optional bottom piece, or leave it out, i really did
not notice much difference. Also, after you get all of the pieces cut
and filed to size, you can put a little glue on the pieces, you will
also have to put a little notch in the bottom of the back piece for the
speaker wire to run under,so when your done, the whole darn box should
slide right over the speaker !! custom fit !! and you have not changed
anything on the outside, it just ends up sounding better and louder !
if anybody tries this simple mode, let me know what you think
vy 73.....ken...k7zum....also...fs/k7zum
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