Originally Posted by Maxjr
Did you purchase the basic 3Pi kit with Eminence woofer and CD, or the fully upgraded kit with B&C DE250 and AE TD12S? Also, did you upgrade any crossover components?
I commend the original poster - I think that one of the great things about online forums is the opportunity to share honest opinions about our gear.
I have heard a fair number of compression drivers, and I've found that you generally have to spend four times as much as a conventional tweeter to get one that's comparably good. IE, there are listenable tweeters that cost $25, but I've heard very few compression drivers for under $100 that are tolerable.http://www.youtube.com/watch?v=6iTDq...eature=related
Here's a video of my Gedlee Summas, which use the B&C DE25, recorded outside. You'll notice a few things:
- The compression driver blends quite seamlessly with the midrange
- The compression driver has plenty of headroom
- Above 16khz, there's no real outputhttp://www.youtube.com/watch?v=qOnRr...eature=related
Here's a video of some really crummy Unity horns I am working on. They use the Celestion CDX1-1425, and an utterly terrible crossover. (I'm working on it :P ) You'll notice a few things:
- As a whole, the speaker has good articulation, but the Summa clearly has a more natural frequency response balance. (IE, the Summa is a lot flatter)
- The compression driver is 'running out of steam'
- The compression driver plays much higher than the B&C DE25 used in the other speaker
I hope the videos are helpful! I think they can show some of the tradeoffs inherent in the use of various compression drivers. Each compression driver has it's strengths. The Celestion is cheaper, but was a much better deal before neodymium prices went through the roof.
Perhaps most important of all, you'll notice that horns are *very* directional. The sound changes both when I move closer, move up, move left, etc... This aspect of horns only gets worse as the coverage angles get smaller. (IE, my Unity is extremely directional, due to the wonky shape. The Summa is far more forgiving of location, due to the VERY large waveguide.)
Also, please note that my setup here is completely craptastic, so keep that in mind when you listen to the videos. I literally hooked up to a set of computer speakers - was simply trying to 'voice' the Unity horn. It's from my car and I never drive much, so it's easier to 'voice' it indoors.