Good amplifiers for acoustics laboratory

[pedro.carvalho]

Hello folks, I've been researching this topic for quite a while and, before I invest in anything, I would like some opinions.

I am working on a small acoustics laboratory, to measure the resonant frequency of materials, few techniques of active noise canceling, and so on.

Given those circumstances, I need an amplifier with independent mono channels and low noise (in the sense that the mechanical part will not produce noise). Therefore, I thought that class D can be a nice way to go.

Keeping in mind the previous specifications (class D is not a hard one), do you have any suggestions for an amplifier that might fit the labs?

 

[M00ndancer]

Budget?
Noise floor required?

 

[Blumlein 88]

https://purifi-audio.com/eigentakt/

Purifi should do it.

 

[Trouble Maker]

I worked adjacent to our NVH team and with them at times, used (not setup or post analysis) the NVH test/data acq. equipment, so I have some exposure but not expertise.
There a many industry standard equipment and test methods, though the equipment and software are usually expensive. Curious about what you are trying to do that these systems can't?

https://www.plm.automation.siemens.com/global/en/products/simulation-test/acoustic-testing.html

https://www.google.com/search?q=impact+hammer+vibration+testing&tbm=vid

Edit: Or maybe you are using these for the test an analysis and the amp is just for noise cancellation application?

 

[pedro.carvalho]

Budget?
Noise floor required?

Thank you for your reply. I am sorry, I thought about the price but I forgot to add it to the post. I am willing to spend up to $1000 on this amplifier.

Since I am normally dealing with quite loud signals, noise-floor is not something I am worried about. Anything over 100dB SNR will please me.

 

[pedro.carvalho]

I worked adjacent to our NVH team and with them at times, used (not setup or post analysis) the NVH test/data acq. equipment, so I have some exposure but not expertise.
There a many industry standard equipment and test methods, though the equipment and software are usually expensive. Curious about what you are trying to do that these systems can't?

https://www.plm.automation.siemens.com/global/en/products/simulation-test/acoustic-testing.html

https://www.google.com/search?q=impact+hammer+vibration+testing&tbm=vid

Edit: Or maybe you are using these for the test an analysis and the amp is just for noise cancellation application?

We are already conducting measurements with an SVANTEK 979, it fits our low-budget startup-like company. We are normally writing our own software to retrieve the results from the tests.

The amplifier will be just to drive the speakers with the sound source - both for as noise source for testing, or part of the setup for noise canceling.

 

[M00ndancer]

The amplifier will be just to drive the speakers with the sound source - both for as noise source for testing, or part of the setup for noise canceling

Brand and model of the speakers?
Specifications?

 

[Speedskater]

I would look into pro audio amplifiers. They have a more robust construction, they are designed to be moved from place to place and be used with different loudspeaker loads.