tomlang

OK, help me out with this. The resonance of the HF200 appears to be about 540 Hz as indicated by an impedance peak. Is there an issue (or compromises) with crossing over lower than this frequency? Apparently not in this case, but in general is this avoided with HF drivers? Also, let me get this straight. Even though the specs call for <no lower than> a 12db crossover at 900 Hz, in fact Bob has it crossed at 500 Hz (12 db) and furthermore has tested it even lower, according to his website -- "I have run this driver at high power (around 100 watts per channel) for quite awhile with no problems crossed at 400hz (?db/octave?) in a Cornscala. The Cornscala does not need to cross that low, but the test proved the Faital Pro HF200 drivers should be safe crossed at 400hz in a Khorn." So this is one rugged, accurate driver indeed. Seems like a bargain to me.

It seems Faital HF200 has a remarkably flat response for a compression driver. That said, can a near "textbook" crossover be used or does it need HF compensation? I guess I should have asked first does the ALK AP-12 600 have HF comp?

I will vote for Option 2 but am biased since I was thinking the two way also. I just emailed Bob about the M2380 JBL clone and also asked about the CS500 two way crossover for this. Here is his response -- "Just this last weekend, we finalized the 2-way crossover for the Cornscala. It is a 2nd order on both the LF and HF and uses an autotransformer. Yes, the crossover point is 500hz."