Originally Posted by cdgatti
OK - I guess before figuring out how I might employ one of these, some o-scope work is warranted.
I just measured the response of this UP-222 using the iPhone SSD RTA app:
- the UP-222 flat response (85dB SPL measurement) starts at 6KHz to 16KHz+. The starting point (I used ~60dB SPL) is about 3.15KHz.
- OEM Mid to tweeter flat response also starts at around 3.15KHz (85dB); the 60dB point is about 1KHz and again at 12.5KHz. Meaning that the UP-222 starts to take over at about 12.5KHz or so.