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woofer damping

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mbskeam

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Location: Woodinville Wa

Post Wed Feb 09, 2011 11:18 pm

woofer damping

for a while now I have been hearing a buzz/rattle coming from the speaker, I thought it was my sat receiver, I kinda just ignored it......
found a tract on a cd that was long enough that I could play and get the buzz to come back, while I probed around....
it turned out to be the woofer baskets that made this noise, and one of the metal rings that attach to the frame.
so I got some Duct seal from home depot, 1.97$ per stick.
it is a mastic putty like material, it sticks to metal real nice.
I figured 1 stick for each woofer.
on the replacement woofers on the basket and magnet attach ring are different.
not as wide, this lets the magnet assy vibrate a bit more. plus the step in the oem woofer sheet metal helps to stiffen the basket.....

after putting the material on it made the ringing go away and now the baskets are real dead sounding, when I play music and you place a hand on the magnet, you can feel that about 80% of the vibration is gone..... \:D/ ,
best of all the buzz is gone..... :D :D :D :D

Image
a video that has the sound of a woofer basket with damping material, and without....

Image

Image

Image

Image
oem woofer

Image
replacement woofer
Mbskeam


#1 BLACK BEAUTY's made by the man, the myth, the legend Bob Carver
CARVER: TFM-75, TFM-45(3), SD/A-490T
SUNFIRE: Tube pre
2 sets of ALS'3, set of SILVERS, set of PLATS
AUDIOCONTROL: phase coupled activator
KENWOOD: BASIC M2a (2)

“Youth ages, immaturity is outgrown, ignorance can be educated, and drunkenness sobered, but stupid lasts forever.”
― Aristophanes

The only thing I'll feel......will be the RECOIL
Necronomicon Ex-Mortis....... Klaatu Barada Nikkto
"We should seek the greatest value of our action"
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F1nut

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Post Thu Feb 10, 2011 1:48 am

Re: woofer damping

Two words, Dynamat Extreme.
Political Correctness...defined

A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a turd by the clean end.



In a recent press conference, President Obama remarked, "If I had a city, it would look just like Detroit."
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TNRabbit

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Post Thu Feb 10, 2011 4:07 am

Re: woofer damping

Dude, you make some beautiful metal work, but that there is just plain 'ole FUGLY:

Image
TNRabbit
Image

From FrankieD's lips to your ears: Sunfire - a quiet box of endless power.

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Zoot Horn

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Post Thu Feb 10, 2011 6:52 am

Re: woofer damping

Those woofers scare me,, dunno why but they do. 8)
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kingman

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Post Thu Feb 10, 2011 7:44 am

Re: woofer damping

Mike...is this process reversable?
In reality, it only matters what it sounds like to YOU!!!
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mbskeam

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Location: Woodinville Wa

Post Thu Feb 10, 2011 8:57 am

Re: woofer damping

Mike...is this process reversable?


yes, this stuff peals off if ya need too....
when the back cover is on, no one will see it....
only I know its there.... :-" :-" :-" :-" :D :D :D :D :D
Mbskeam


#1 BLACK BEAUTY's made by the man, the myth, the legend Bob Carver
CARVER: TFM-75, TFM-45(3), SD/A-490T
SUNFIRE: Tube pre
2 sets of ALS'3, set of SILVERS, set of PLATS
AUDIOCONTROL: phase coupled activator
KENWOOD: BASIC M2a (2)

“Youth ages, immaturity is outgrown, ignorance can be educated, and drunkenness sobered, but stupid lasts forever.”
― Aristophanes

The only thing I'll feel......will be the RECOIL
Necronomicon Ex-Mortis....... Klaatu Barada Nikkto
"We should seek the greatest value of our action"
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Don

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Post Thu Feb 10, 2011 9:20 am

Re: woofer damping

Mike,

Thanks for the post. Both interesting and innovative!
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— Thomas Paine


"Try not to become a man of success, but rather a man of value" Albert Einstein

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RIP Bill D.
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Scarabeo

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Post Fri Feb 11, 2011 11:18 pm

Re: woofer damping

How do you think it would work on my wifes mouth? :lol:

innovative for sure but Your good at solving problems for sure and getting the job right =D> Excellent idea! Thanks for sharing...
BillD, You will be forever with us! RIP until we meet again on the other side...
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mbskeam

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SILVER-7t

Posts: 1987

Joined: Mon Jan 25, 2010 2:32 am

Location: Woodinville Wa

Post Sat Feb 12, 2011 12:37 pm

Re: woofer damping

How do you think it would work on my wifes mouth?


you should ask her..... :-" :-" :-"

let us know how that works out for ya..... :lol: :lol: :lol: :lol:

You stated in the past that these sound diffrent, I think so also...
not bad, just diffrent from the OEM woofers
will try and do a good listen today....
have only the LT side done, now I can really hear the sound of the woofers making noise on the Rt.
but the LT is real quit now....
the other thing I found is the speaker frame has a tone of its own also,
try and just tap on the top woofer mag and work your way down, you will hear this thing resonate....
more duct seal.....
hidden of course, so as to not be ugly.... :D :D :D
Mbskeam


#1 BLACK BEAUTY's made by the man, the myth, the legend Bob Carver
CARVER: TFM-75, TFM-45(3), SD/A-490T
SUNFIRE: Tube pre
2 sets of ALS'3, set of SILVERS, set of PLATS
AUDIOCONTROL: phase coupled activator
KENWOOD: BASIC M2a (2)

“Youth ages, immaturity is outgrown, ignorance can be educated, and drunkenness sobered, but stupid lasts forever.”
― Aristophanes

The only thing I'll feel......will be the RECOIL
Necronomicon Ex-Mortis....... Klaatu Barada Nikkto
"We should seek the greatest value of our action"
<<

kingman

User avatar

(pair of) SILVER-7 TUBE AMPs

Posts: 5746

Joined: Sun Nov 30, 2008 2:10 pm

Location: Upstate South Carolina

Post Sat Feb 12, 2011 12:52 pm

Re: woofer damping

not be ugly
...it's FUGLY!!!! :lol: :lol: :lol:
In reality, it only matters what it sounds like to YOU!!!
<<

F1nut

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SILVER-7 TUBE AMP

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Joined: Tue Nov 11, 2003 3:31 am

Location: The Mars Hotel

Post Sat Feb 12, 2011 12:56 pm

Re: woofer damping

Both interesting and innovative!


I was applying Dynamat Extreme to those stamped steel baskets years ago. Pics are somewhere in here. Tip: you do not need to cover every square inch, a little goes a long way.
Political Correctness...defined

A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a turd by the clean end.



In a recent press conference, President Obama remarked, "If I had a city, it would look just like Detroit."
<<

mbskeam

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SILVER-7t

Posts: 1987

Joined: Mon Jan 25, 2010 2:32 am

Location: Woodinville Wa

Post Sat Feb 12, 2011 3:57 pm

Re: woofer damping

I was applying Dynamat Extreme to those stamped steel baskets years ago.


I think I read that....
that's why it came to mind on what to do, I remembered reading something or another.....
but as I am cheap,.....well ya know....... #-o #-o #-o

thanks.... :D :D :D :D
Mbskeam


#1 BLACK BEAUTY's made by the man, the myth, the legend Bob Carver
CARVER: TFM-75, TFM-45(3), SD/A-490T
SUNFIRE: Tube pre
2 sets of ALS'3, set of SILVERS, set of PLATS
AUDIOCONTROL: phase coupled activator
KENWOOD: BASIC M2a (2)

“Youth ages, immaturity is outgrown, ignorance can be educated, and drunkenness sobered, but stupid lasts forever.”
― Aristophanes

The only thing I'll feel......will be the RECOIL
Necronomicon Ex-Mortis....... Klaatu Barada Nikkto
"We should seek the greatest value of our action"
<<

Scarabeo

User avatar

SILVER-7 TUBE AMP

Posts: 2655

Joined: Tue Nov 18, 2008 6:05 pm

Post Sat Feb 12, 2011 6:43 pm

Re: woofer damping

mbskeam wrote:
How do you think it would work on my wifes mouth?


you should ask her..... :-" :-" :-"

let us know how that works out for ya..... :lol: :lol: :lol: :lol:

You stated in the past that these sound diffrent, I think so also...
not bad, just diffrent from the OEM woofers
will try and do a good listen today....
have only the LT side done, now I can really hear the sound of the woofers making noise on the Rt.
but the LT is real quit now....
the other thing I found is the speaker frame has a tone of its own also,
try and just tap on the top woofer mag and work your way down, you will hear this thing resonate....

more duct seal.....
hidden of course, so as to not be ugly.... :D :D :D

Its only for a couple Days a month - She may fall for it :-#

Yep your right on that and I do hear it resonate - I will also do what you have done! Thanks for the post =D>
BillD, You will be forever with us! RIP until we meet again on the other side...

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