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Dayton Audio AMTPRO-4 Air Motion Transformer Tweeter 4 Ohm
If I wired three of these in series to get a 12 ohm line array is there a stock xover that would work correctly....let me keep a lowish cover point like 800 hz or so?
We do not have any pre-built crossovers that will suffice for this application. In order to cross a 12 ohm load at 800 Hz, you will need a 9.1 uF cap and 4.5 mH coil.
Date published: 2015-07-27
Are replacement diaphragms available for this model like they are for the ESS AMT? I am guessing from the design, that they are pretty much buttoned up in assembly and not replaceable but though I would ask.
No, we do not have any replacement diaphragms at this time.
Date published: 2015-04-01
Would the AMT be suitable with a 1khz crossover with a 12db slope?
The lowest cross over point I would recommend is 2Khz.
Date published: 2015-04-08
Hi, I consider the large Dayton Pro AMT-4 tweeter. If I where to put this tweeter in a closed box, then how large a box should I aim for? (the Qt is very high). Thanks! Best regards Peter
At these high frequencies, the box volume does not have a significant effect on the sound radiation from the front of the AMT, nor will it have an impact on the low frequency response. The main job of a rear chamber for a driver like this is absorption of the back wave. I would provide a distance from the radiating element to the cabinet wall of 1 inch all around, and 2 inches directly behind the AMT. If desired, you can either leave the rear felt in place or remove it and add stuffing to the chamber behind the AMT.
Date published: 2014-12-31
Is there any off-axis FR data available for this driver?
Unfortunately the only charts we have available are on the spec sheet for the driver. You may want to check out our Tech Talk forum for possible third party measurements both on and off axis.
Date published: 2014-09-17
Recommended cross over frequency?
If using this tweeter in a two-way with two 10" Dayton PA225-8's, what do you recommend as the best cross-over frequency for max power handling and clarity for a studio monitor type speaker. Also, do you have one of these or can you recommend a design since you are now offering quite a few AMT tweeters which reach down to 700-800Hz?
Consider looking at the old ESS designs that used Air Motion Transformers. The full size AMTs first used a 1200Hz xover, then a later version used 1000Hz, and the AMT 1c used 800Hz. But they always used 3rd order (18dB) slopes!
Date published: 2013-10-15