What do I need to measure speaker cab resonances?

What I am suggesting is true, proper DIY!

Build your own enclosures, or buy a 2nd hand pair of the most inexpensive budget tower speakers you can find - they will almost certainly resonate and will allow you to better learn how to stop them resonating.

i disagree with you.

first off, I live in a condo. Variable no 1 in why I can’t do what you suggest.
or else , yeah that would be super fun.
Second variable is I already have a pair of speakers , where for some reason I need to repeat , that the mods/experiments are 100% reversible.

and instead of you saying “ well ok he wants to do this mod to his existing speakers “
you are saying “ what is wrong with him? Why doesn’t he listen to me? He isn’t going to achieve anything “

if you don’t like what I am doing or my threads, why do you insist on posting on them?
i don’t get it man. Honestly I don’t.

i don’t go on threads and insist on something an OP wants to do is wrong. Why should I?

basically what I am saying is, why don’t you just ignore me If you don’t agree or like what I am doing?
just ignore me man.
its pretty easy.

im not that important.
 
This is an open forum. Your ideas are there for all to freely comment upon and to offer considered advice upon.

I'll look forward to when you have actually done some of the things you have been writing about and have published the objective results.

EDIT: Spelt advice wrongly!
 
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Omg he’s back!

lol

please man please tell me you are young.
there is no other way I can explain your behavior. ha

and yeah I’ll tell you if something doesn’t work. Or it was an objective failure.

is that what you want to hear and look forward to?
lol

no problem man
if it makes you happy I can list out some failures in my life as well.
i have zero problems with that.
but again that comes with age.
that’s why I mentioned you have to be young. Please please tell me you are.

😂
 
Go to Amazon and search. You will find all kinds of accelerometers for cheap to expensive. Then go to Windaq and get a intro datalogger for $100. It will come with software to run FFT on your accelerometer and you will then know the frequencies also. Used the combo many times in industrial controls and works beautifully.
 
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Geezus man.

seriously. Ignore me

what I said is not personal in the least.

just learn to ignore people. I’m not joking.
having the last word means nothing. It really doesn’t.

You will learn that as you get older. I’m not being snarky either.
and btw 90% of what I said was for youknowyou.

feeling the need to go to all my threads and insinuate what I am doing is dumb , well that’s beyond me. But I do understand it if you are young.

anyway. It’s all good man.

and yeah I’ll post my results. If I make a mistake or things don’t work as I plan, then others can learn from that. Not gonna hide it for my ego or anything dumb like that.
no need.

cheers
 
Go to Amazon and search. You will find all kinds of accelerometers for cheap to expensive. Then go to Windaq and get a intro datalogger for $100. It will come with software to run FFT on your accelerometer and you will then know the frequencies also. Used the combo many times in industrial controls and works beautifully.

yeah I ordered one from meniscus Audio.
has a Jack out. So I will connect it to my recording interface ( focusrite) and into REW.

thanks man!
it will be fun.
can’t wait to get it
 
having the last word means nothing. You will learn that as you get older.

anyway. It’s all good man.

You are wrong about my age and, who knows, you may even be wrong about me being a man. 😊

Meanwhile...
 

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Almost everything in the world has a natural frequency (including things like rocks), the task is to engineer yourself away from it IF ITS CAUSING A PROBLEM. The first thing you have to do is find where the resonance is (did you know that the crystals in accelerometers actually have a resonance that you have to stay away from). The second step is to either change the mass or the stiffness. Thicker MDF is changing the mass without adding stiffness (although technically it is adding stiffness). The 64 Impala that drives down the street with the 500 watt woofer that's rattling the entire car apart, If my buddy and I go sit on the trunk, the rattle will go away because we added a lot of mass.
I love testing, my entire career was based on testing equipment with accelerometers and learning however, we addressed the low hanging fruit first, this was equipment that had a problem. Monitoring equipment that did not have an issue was also a great learning experience.
Bottom line, test test and more test if you have the time and $$$, its a lot of fun.
I'm curious if the resonance is causing an audible acoustic peak or just rattling the ash tray off the top. A calibrated Mic and FFT analyzer may be the answer.
 
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Yeah man.

i actually can’t wait to get the accelerometer and start up measurements and then add bracing in different places to see what happens.

might sound geeky, but I can’t wait to do it.

i loved taking measurements with REW and transformed my bad room into a good one with treatments. Took me a long time, but it was super fun and I learned a ton

these vibrational measurements should take the fun to a whole new level

I just want to take something that is already good, in this case my speakers, and challenge myself to make them even better. Put in the extra 10-20% the manufacturer didn’t. See what I can accomplish.

gonna be fun
 
What I am suggesting is true, proper DIY!

I was getting there too… a proper experiment would be a whole new braced box with 15 or 18mm quality ply, same everything else. Transfer all the parts over and see where you are at.

Then you can compae the box design approach the ProAc respresents and an optimally designed braced box.

But i have little doubt that a little diy can improve a loudspeaker built to be in ths price class (a bit thicker material is a lot cheaper than doing a braced box.

I have done many retrofits, and not been able in make some audible improvement.

The ProAcs are designed to a price, and have many compromises. There were many British designs that used the same philosophies and a few independent thinking standouts.

By modifying them you so nuke any collector value)

dave
 
I was getting there too… a proper experiment would be a whole new braced box with 15 or 18mm quality ply, same everything else. Transfer all the parts over and see where you are at.

Then you can compae the box design approach the ProAc respresents and an optimally designed braced box.

But i have little doubt that a little diy can improve a loudspeaker built to be in ths price class (a bit thicker material is a lot cheaper than doing a braced box.

I have done many retrofits, and not been able in make some audible improvement.

The ProAcs are designed to a price, and have many compromises. There were many British designs that used the same philosophies and a few independent thinking standouts.

By modifying them you so nuke any collector value)

dave

once again

1) the mods are 100% reversible.
2) I live in a condo. Making a box is out of the question

im glad what you think would be a proper experiment.
do I care? No.
it’s just one more persons opinion.



next
 
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Yeah man.

i actually can’t wait to get the accelerometer and start up measurements and then add bracing in different places to see what happens.

might sound geeky, but I can’t wait to do it.

i loved taking measurements with REW and transformed my bad room into a good one with treatments. Took me a long time, but it was super fun and I learned a ton

these vibrational measurements should take the fun to a whole new level

I just want to take something that is already good, in this case my speakers, and challenge myself to make them even better. Put in the extra 10-20% the manufacturer didn’t. See what I can accomplish.

gonna be fun
How are you going to add effective braces when you already said you can't build anything, you're in a condo?

Your ego really gets in the way of people wanting to help you. You know next to nothing about speakers, but make fun of those offering up their experience. But sure, you'll do the extra 20% the manufacturer was just too lazy to do, and your speakers will be the best. I know this story.
 
How am I going to add braces?
ah thats easy

if you practiced the magical art of reading the thread.
actually it’s on the first post.
lol

my ego?
ah and tell me how my ego is getting in the way?
oh and thank you for reminding me I know next to nothing about speakers.
yeah that is true. Maybe I should just shut it and listen. Maybe you’re right.

just ignore me man.
ignore me.
 
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