| Audio Tweaks - Tweak Ref. 391 |
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| Bass
Tune your room |
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| 391 |
Mac |
Excellent |
$25.00 |
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sonotube |
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You
have seen this one before,and have been skepticle.
And yes,this has a low WAF. BUT...the results are very
impressive. Get 4 sonotubes(used in construction for pouring
concrete posts) 10 inch diameter,4 to 5 feet long.Wrap and
glue on some felt or burlap..any soft or pourous material will
do,and U only have to glue it on.Fill each tube with one full
roll(maybe half a roll more) of paper towel,scruched up.Cut up
2 one foot lengths of 1 by 1 scrap wood sticks to hold tubes
just off the floor. |
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tubes up,on sticks(or anything else just to raise off the
floor a bit)in each of the 4 corners of your listening room. |
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theory is this>>> In every listening room bass
frequencies tend to get caught up in the corners....these
are called "standing waves".What they do is sort
of confuse your ears,setting off the timing of music,and
sort of "cover up" low-level sound coming from
your speakers.The tubes(also called "bass traps")
absorb these standing waves,allowing the direct sound to be
heard without confusion. |
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better soundstage,WAY better imaging. I tried this with both
my listening rooms(sorry...got 2;) And they are very
different in layout...one is near-field,the other a big,wide
living area,with speakers on the long wall,far from the
corners.In this second room I was not expecting as
impressive results as the near field,but i was blown
away.Details in recordings that I could just barely make out
are now very easy to hear....Boominess,which i didn't have
much of,is now totally gone. |
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They have a low WAF,but are very light and could be stashed in
a closet easily....bring them out for your late-night sesions
when the W is in bed! There are other sizes of tubes,and the
setup is open to lots of experimentation with diameter and
length,but the sizes i mention here worked well in both my
rooms(12 by 14 feet and 28 by 24,both with 9 foot ceilings).
TRY THIS before you shop for new speakers.
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| Chuck |
I
thought I was tweaked out ,but I made 3 traps ,only 8 or
12 were available so I used 8s and was amazed I screwed
2 to the floor and they sounded even better the other
one I move around. If this is the person who posted the
tweak ,check out my photos in audiocircle.com .thank you
so much. Chuck Josephson. |
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| Elliott |
Do
the tubes need to have their ends covered? Or is the
fabric around the tube sufficient? |
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| MAC |
Elliot...Do
not cover the ends......they tend to collect spiders and
such;) And I have found they work best when not flat to
the floor(as seen in the very expensive traps
available). Raise them about half an inch or so....a
couple of pieces of one-by-one,6 inches long,with tube
set on top. Looked for your pics Chuck,but they are no
longer there.
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| Ronald |
I
use them (approx 13"OD) and just wrap them in r-3
fiberglass insulation and cap the ends (airtight) then
wrap the whole thing in a good looking pattern material.
I dont know where the idea comes from that you need
burlap or acoustically transparent material as with the
long wavelength of a bass trap its not necessary. ron |
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| Chris |
I
just stuffed the hell out of the 12" with
insulation and drilled 6 1" holes in the tubes
behind the speakers and it's like having ASC Tube Traps
for 20 bucks. I'm sure the ASC's work better for $600
each... |
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| Elliott |
Thank
you all for your replys. MAC: If you do not seal the top
and bottom, why do you put burlap on the outside of the
tubes? That would be putting a porous material against a
solid. I'm just learning about all these tweaks and I'm
very interested in the tube trap ideas. RONALD: Why did
you wrap the outside with fiberglass and seal yours (by
the way, how did you seal the tubes)? Did you stuff the
inside with anything like the others? CHRIS: Did you
wrap the outsides of the tubes or seal them? Does it
matter where the holes were drilled. ALL: What happens
when the lengths of tube are shorter or longer as well
as what sound changes do you get with smaller or larger
diameter tubes? THANKS TO EVERYONE! THIS IS FUN!
Thanks |
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| John |
Elliot,
You should do some kind of participation too, why don't
you research what the others left out and then share it. |
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| MAC |
Elliot........
Sorry for the late reply. The burlap serves 2
purposes.One to cover up the Home Depot red,black and
green writing:),the other to kinda difuse sound waves.U
want to use something that will not be
reflective,especially on a round(therefor unpredictable)
surface.Maybe the reason U ask about the ends being
sealed or not is from pics of commercial room
treatments? Some of them are simply solid cylinders of
foam of varying densities.They often call these things
"traps" but they are in reality difusers,and
don't have quite the same effect,or as much of an
effect(but can be helpful in some cases...but they are
damn expensive....even raw foam is expensive if U wanted
to make your own. |
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