Electronics > Beginners

Why is my subwoofer demodulating the treble?

(1/5) > >>

testtube44:
I have a speaker set that's doing something weird. I don't know if it's a feature or not, but it's amplitude demodulating the treble frequencies and playing them. https://www.dropbox.com/s/subbisj1omxj6vv/DR0000_0168.wav?dl=0. In the recording you can hear that the sub responds when 2 high tones are played together, and is the difference of their frequencies. If this is a feature, what's it called?

dmills:
It is called intermodulation distortion, and is a sign that someone fucked up, something somewhere is non linear.

Regards, Dan.

testtube44:

--- Quote from: dmills on June 02, 2020, 07:32:27 pm ---It is called intermodulation distortion, and is a sign that someone fucked up, something somewhere is non linear.

Regards, Dan.

--- End quote ---
Is there anyway to find out what, and how to fix it?

Vovk_Z:
I can say only that we have to determine first is it woofer or amplifier doing it. Both can do it more or less.

magic:
No expert but I imagine that there ought to be a crossover somewhere, to keep treble out of the sub. Speaker transducers as such are nonlinear so I think they shouldn't even be allowed opportunity to create such problems in the first place :-//

Navigation

[0] Message Index

[#] Next page

There was an error while thanking
Thanking...
Go to full version
Powered by SMFPacks Advanced Attachments Uploader Mod