Hi, Matty,
20 kHz is the minimum for properly reproducing the ultrasonics, as they use a frequency band that tops out there. If you cannot find the frequency response rating, there's a simple test you can do to know if your speakers work.
1. Do you hear staticky voices? If so, they are not fit for use with ultrasonics.
2. Do you hear occasional crackling? That usually happens when they're on the verge of being unfit.
3. Turn the volume up to maximum. Do you hear staticky voices (speaker distortion) now? If so, and you could not hear them before, then the speakers are good. Just remember to return it to normal volume.
The best volume for the ocean surf version is "as loud as you can stand it" or at a normal volume for when you would listen to something else audible (music), whichever is the lower of the two options for volume. If you play them at night, and you play it at a lower volume than that, it will still work, but tend to be somewhat less effective or quick.
20 kHz is the minimum for properly reproducing the ultrasonics, as they use a frequency band that tops out there. If you cannot find the frequency response rating, there's a simple test you can do to know if your speakers work.
1. Do you hear staticky voices? If so, they are not fit for use with ultrasonics.
2. Do you hear occasional crackling? That usually happens when they're on the verge of being unfit.
3. Turn the volume up to maximum. Do you hear staticky voices (speaker distortion) now? If so, and you could not hear them before, then the speakers are good. Just remember to return it to normal volume.
The best volume for the ocean surf version is "as loud as you can stand it" or at a normal volume for when you would listen to something else audible (music), whichever is the lower of the two options for volume. If you play them at night, and you play it at a lower volume than that, it will still work, but tend to be somewhat less effective or quick.
Subliminal Audio Specialist & Administrator
The scientist has a question to find an answer for. The pseudo-scientist has an answer to find a question for. ~ "Failure is the path of least persistence." - Chinese Fortune Cookie ~ Logic left. Emotion right. But thinking, straight ahead. ~ Sperate supra omnia in valorem. (The value of trust is above all else.) ~ Meowsomeness!
The scientist has a question to find an answer for. The pseudo-scientist has an answer to find a question for. ~ "Failure is the path of least persistence." - Chinese Fortune Cookie ~ Logic left. Emotion right. But thinking, straight ahead. ~ Sperate supra omnia in valorem. (The value of trust is above all else.) ~ Meowsomeness!
