Help reassembling a Heil AMT

[dr_vega]

I bought a pair of Heil AMTs (the big ones) in rough condition. One is split into the two halves.

My question is, when I put the two halves together, should the two halves attract or repel each other?

Thanks for any help you can give me.

dr_vega

[twooper]

I just did the same work. Yes they repel each other. I used a little contact cement and a brick to keep them together. Did you note the red dot on the diaphragm? and does it go on the front? Have you conceived of a crossover? I mated the heil to a pair of Klisph rf-10's and the balance is very good but I am having crossover anguish.

[dr_vega]

Originally Posted by twooper

I just did the same work. Yes they repel each other. I used a little contact cement and a brick to keep them together. Did you note the red dot on the diaphragm? and does it go on the front? Have you conceived of a crossover? I mated the heil to a pair of Klisph rf-10's and the balance is very good but I am having crossover anguish.

Thanks for the info. I'm using active crossover (Behringer DCX2496). I'm crossing at 1.5kHz with 24dB/octave butterworth filter. Sounds good to me.

Thanks again.

-dr_vega

[twooper]

I was going the active crossover way, but decided to mate them to a klipsch rf-10. they fit perfectly and I used the existing crossover (around 2000) disabling the crappy horn. I want to replace the horn with a REAL compressor driver and active crossover those. I have a Amcron VFX2A. Also looking at adding a long throw horn center speaker through a Quad mono block. I once had the horn setup. Very sweet but it has to be at the end of the room to catch the dynamics. You'd swear you just met Charlie Parker. The AMTs do go as low as 500Hz but 1.5 to 2 would be better for dynamics. That said. I'd like to hear the AMT's at low Hz levels from your electronic crossover - 500hz with a good bottom. What are you using for the bottom?

[dr_vega]

Originally Posted by twooper

I was going the active crossover way, but decided to mate them to a klipsch rf-10. they fit perfectly and I used the existing crossover (around 2000) disabling the crappy horn. I want to replace the horn with a REAL compressor driver and active crossover those. I have a Amcron VFX2A. Also looking at adding a long throw horn center speaker through a Quad mono block. I once had the horn setup. Very sweet but it has to be at the end of the room to catch the dynamics. You'd swear you just met Charlie Parker. The AMTs do go as low as 500Hz but 1.5 to 2 would be better for dynamics. That said. I'd like to hear the AMT's at low Hz levels from your electronic crossover - 500hz with a good bottom. What are you using for the bottom?

I have two 6" Dayton mid/woofers on each side (RS series) covering 100 Hz - 1.5k. At 100 Hz, I cross to a 15" subwoofer. All of them are mounted as open baffles. The sub is a crappy car sub. Lots of thump, but no definition. I plan to upgrade it, but i haven't decided what to upgrade to.

I have a friend with Klipsch Herseys and LaScalas. I like horns.

The active crossover is great for experimentation, but you need six amps.

-dr_vega

[dr_vega]

Originally Posted by twooper

I was going the active crossover way, but decided to mate them to a klipsch rf-10. they fit perfectly and I used the existing crossover (around 2000) disabling the crappy horn. I want to replace the horn with a REAL compressor driver and active crossover those. I have a Amcron VFX2A. Also looking at adding a long throw horn center speaker through a Quad mono block. I once had the horn setup. Very sweet but it has to be at the end of the room to catch the dynamics. You'd swear you just met Charlie Parker. The AMTs do go as low as 500Hz but 1.5 to 2 would be better for dynamics. That said. I'd like to hear the AMT's at low Hz levels from your electronic crossover - 500hz with a good bottom. What are you using for the bottom?

So I tried the Heils down to 100Hz. They lose omph below 1k or 1.5kHz. Still it is rather remarkable to hear the clarity they bring to the mids.

You can run them full range without a crossover if you don't push them hard. Keep them at moderate to low volumes and you won't hurt them, but you'll be able to hear what they can do. Turning up the volume loud won't gain much below 1K and will risk burning your diaphragm.

dr_vega