Accelerometer Testing of Loudspeaker Drivers - diyAudio
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Old 9th January 2015, 09:18 PM   #1
gdan is offline gdan  Greece
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Default Accelerometer Testing of Loudspeaker Drivers

If you are interested for measuring and studying the vibration behavior of any audio component like a loudspeaker driver, a loudspeaker stand or a turntable you could use an accelerometer with a suitable amplifier.
You could find more information in my article in Audioxpress June 2011 which is posted also online here:
Test Your Speakers? Performance with this DIY Measurement System | audioXpress

If you are interested to construct such a system you could find information here:
PCB anf Front panel for Accelerometer preamplifier
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Old 13th January 2015, 11:46 PM   #2
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Very Cool !!!
Thanks for Posting this!!

jer
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Old 31st May 2015, 12:40 PM   #3
gdan is offline gdan  Greece
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A reminder for those who missed the initial post.
I have available some PCBs and Front Panels for the construction of the Accelerometer amplifier.
If you are interested email me at gntanavaras@gmail.com
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Old 31st May 2015, 12:43 PM   #4
snup is offline snup  Denmark
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studying...
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Old 1st June 2015, 09:24 AM   #5
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Interesting, but how is the self weight of the accelerometer taken into consideration? It will detune the mechanical parameters of the loudspeaker.
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Old 2nd June 2015, 03:18 PM   #6
gdan is offline gdan  Greece
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The greater limitation in the use of an accelerometer when it is attached in a driver's cone is of course its weight. The ACH accelerometer has a weight of 3 grams and could be used without serious effects in drivers that have a cone mass with weight greater than 30 grams.
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Old 8th June 2015, 09:12 PM   #7
gdan is offline gdan  Greece
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You could find online the article for the Accelerometer system (from Audioxpress June 2011) at:
Test Your Speakers? Performance with this DIY Measurement System | audioXpress

I have available some PCBs and Front panels (as shown in the photo) for building the accelerometer preamplifier in a more professional look.

The cost for both the PCB and the engraved aluminum front panel is now 60 Euros.

If you are interested, send me an email: gntanavaras@gmail.com
Attached Images
File Type: jpg AP1 - PCB and front panel photo.jpg (707.6 KB, 130 views)
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Old 8th June 2015, 09:33 PM   #8
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I bought one of these after Jan Didden told me he had one. It really is a very nice instrument. It is not just to mount on a driver, I have not yet used it as such, but also very much to look for panel resonances.

Before George sold me one of his kits, I was almost completely in the dark when it came to panel resonances in loudspeakers I develop. The knock test only goes so far.

In short, highly recommendable.
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Old 22nd June 2015, 04:37 PM   #9
gdan is offline gdan  Greece
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A reminder for anyone that is interested.
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Old 22nd June 2015, 04:46 PM   #10
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gdan,
Will you have these parts available at a later date or is this a one time thing and when you run out that will be it?
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