New Heathkit AS101 owner - First post.

[alancohen]

My goal with the active crossover is not to raise the XO frequency (although I will certainly try it...why not), since my ideal setup would likely be around 300Hz. Obviously not with this horn. It's more to gain the flexibility of two amplifiers and allowing them to feed directly into their respective drivers without passing through inductors and capacitors. I'm building some pretty open, detailed and lightning fast amplifiers and I would like to try and avoid the bottleneck of a passive crossover.

But that brings up a question. I can understand why there would be frequency limits on a driver...it just physically can't vibrate well that fast or slow. But I can't quite get my brain around why the horn itself would have such limitations. I gather the curve of the horn structure is tuned to maximize a certain frequency range, but what would happen if you put a 500Hz signal into an 811b horn, assuming the driver itself could handle it? Of course a sound would come out, but what would be happening to it to make it undesirable? Inquiring minds want to know.