Speakers - A rough Guide by ArcticFox

[ArcticFox]

Arctic fox this is gold, thank you. Learned much.

Is this only for ultrasonic or also for masked?

Would you know how to find the dB level on earbuds and headphones. I have looked online and it uses complex equations beyond my comprehension. I have tried my soundmeter with the foam off and earbud pressed over the hole, but it seems innacurate in that 55-65 is very loud, 16 out of 30 on my mp3 player and earbud combo.

No worries dude, I need to tidy it up a bit and add a bit more info but hopefully will be a good resource for everyone

All of the speakers here will work with masked tracks. Masked subliminals are not dependant on a minimum 20 kHz upper frequency so pretty much any speaker will work, however they must be stereo for maximum effect!

I can't help with earphones as I only use earphones for masked tracks, thats why i didn't get into it in this guide. At a guess you will first have to listen to both masked tracks to calibrate the ultrasonic, then just remember this level. BUT the minimum 20kHz rule still applies if you intend to use ultrasonics with earphones.