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:
http://www.diyaudio.com/forums/swap-meet/262944-pcb-anf-front-panel-accelerometer-preamplifier.html
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:
http://www.diyaudio.com/forums/swap-meet/262944-pcb-anf-front-panel-accelerometer-preamplifier.html
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
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
Interesting, but how is the self weight of the accelerometer taken into consideration? It will detune the mechanical parameters of the loudspeaker.
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.
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
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
Attachments
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.
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.
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?
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?
I have a couple of Front Panels and a few PCBs at the moment.
Maybe, I will order these parts again if there will be enough interest.
Maybe, I will order these parts again if there will be enough interest.
A kind reminder for those who missed the previous posts.
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
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
gdan,
I'm interested but just don't have any money to spend right now. I wouldn't need the front panel I don't think but perhaps it would be a nice thing to have. Send me a PM with the costs.
Steven
I'm interested but just don't have any money to spend right now. I wouldn't need the front panel I don't think but perhaps it would be a nice thing to have. Send me a PM with the costs.
Steven
The cost for both the PCB and the engraved aluminum front panel is 60 Euros.
The shipping cost is not included in the above price.
The shipping cost is not included in the above price.
I have available an assembled and calibrated unit of the accelerometer preamplifier with its ac adaptor (see photo).
If you are interested, send me an email: gntanavaras@gmail.com
If you are interested, send me an email: gntanavaras@gmail.com
Attachments
Hello. I am new to such testing but would like to learn. Can this be used with an oscilloscope? Thank you.
Jim
Jim
Of course can be used.
The output of this amplifier is an analog signal and can be monitored with any oscilloscope.
regards
George
The output of this amplifier is an analog signal and can be monitored with any oscilloscope.
regards
George