Even though I'm not Shannon, perhaps I can clear up a couple of things.
The speakers don't have to be over 20 kHz for the ultrasound subs to work, but 20 kHz is the minimum requirement as far as speakers go. The maximum is 23 kHz, but even though Shannon addresses this in another thread, I’m not quite sure what the extra benefits are compared to 20 kHz. The subs will be clearer and more silent, but regarding self-programming, I don’t know.
If you’re not sure about what the hertz count of your speakers are, use the ocean surf version just to make sure, I also believe that I read here that there were a couple of users here that used the speakers of the iPod itself with success. You may want to look into that.
The speakers don't have to be over 20 kHz for the ultrasound subs to work, but 20 kHz is the minimum requirement as far as speakers go. The maximum is 23 kHz, but even though Shannon addresses this in another thread, I’m not quite sure what the extra benefits are compared to 20 kHz. The subs will be clearer and more silent, but regarding self-programming, I don’t know.
If you’re not sure about what the hertz count of your speakers are, use the ocean surf version just to make sure, I also believe that I read here that there were a couple of users here that used the speakers of the iPod itself with success. You may want to look into that.
