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Dayton Audio AMT1-4 Air Motion Transformer Tweeter

Brand:| Model: AMT1-4
Overview
Dayton Audio's AMT1-4 air motion transformer (AMT) tweeter provides lightning fast and dynamic high frequency response by using a lightweight folded Kapton ribbon.
Highlights
  • Feather-light folded Kapton ribbon diaphragm
  • Clean, highly detailed, and dynamic output
  • Capable of high sound pressure levels without distortion
  • Powerful, lightweight Neodymium magnet structure
  • Sonically similar to metal ribbon and planar tweeters
Part # 
275-090
Weight: 0.6 lbs.  
IN STOCK
List Price$199.99
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$148.90
Buy 4-up$141.46
Part # 275-090
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Product Details

Dayton Audio AMT1-4 Air Motion Transformer Tweeter

Borrowing technology from the original ESS Heil Air Motion Transformer (AMT), plus a high-quality replaceable diaphragm, the Dayton Audio AMT1-4 makes a superb high-end tweeter available at a supremely attractive price.

Also referred to as aero-striction tweeters, the AMT concept uses a pleated Kapton diaphragm immersed in a consistent magnetic field so that the pleats constrict and expand with the musical signal, pushing the air out from between them in the forward direction when the pleats contract. The result is a tweeter that is incredibly accurate and immediate, and capable of sustained high output with ultra-low distortion for sensationally smooth, clean treble at any volume level. Recommended minimum crossover frequency of 2,500 Hz at 12 dB/octave.



Product Specifications
  • Tweeter TypeRibbon
  • Impedance4 ohms
  • Power Handling (RMS)40 Watts
  • Frequency Response2,500 to 30,000 Hz
  • Sensitivity93 dB 1W/1m
Thiele-Small Parameters
  • Resonant Frequency (Fs)2,566 Hz
  • DC Resistance (Re)3.90 ohms
  • Total Q (Qts)1.24
Mounting Information
  • Overall Outside Diameter3.75"
  • Cutout Diameter3"
  • Depth0.88"
Dayton Audio AMT1-4 Air Motion Transformer Tweeter
  • BrandDayton Audio
  • ModelAMT1-4
  • Part Number275-090
  • UPC848791000096
  • Product CategoryTweeters
  • Unit of MeasureEA
  • Weight0.6 lbs.
  • California Prop 65

    Warning: California residents only. Please note per Proposition 65 that this product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

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Reviews

Dayton Audio AMT1-4 Air Motion Transformer Tweeter
Dayton Audio AMT1-4 Air Motion Transformer Tweeter is rated 5.0 out of 5 by 1.
Rated 5 out of 5 by from Fantastic TweeterI used this tweeter to make a frankenspeaker pair, and the results were incredible. the pair of tweeters i received measured at 4.33 Ohm flat across the audible frequency range, and i corrected with a resistor to put the impedance in the sweet spot for distortion specs for my amps. They are expensive, but worth it in my opinion - hoping PE isn't reading this and lowers the price so i can afford to buy a few more.
Date published: 2014-10-29

Product Q&A

Get your questions answered from other customers
who own this product or have experience with it.
If your question requires design or troubleshooting information,
please email tech@parts-expresss.com  for a prompt reply.
Dayton Audio AMT1-4 Air Motion Transformer Tweeter

What crossover changes would you recommend for retrofitting this into the Tritrix system?

Asked by: tedly
The crossover would require a complete redesign for something like this to be possible. I would recommend inquiring about this on our Tech Talk forum, where the Tritrix designer might be able to weigh in on such modifications.
Answered by: MattP
Date published: 2014-11-26

I would like to use these tweeters in my truck as part of a 2 way active system. Would these do well facing up towards the glass?

Asked by: FC12
These will work fine for the application, but I would recommend wrapping them in a grill fabric to help block the sub and prevent dust and debris from falling on the diaphragm.
Answered by: MattP
Date published: 2014-11-19

Just a few follow up questions regarding direct wiring of the AMT1-4 tweeter, 4 ohm, with other 8 ohm drivers. What would be the load, in ohms, that the receiver would see? If not 8 ohms, would it be harmful to the amp driving 8 ohm rears and 8 ohm sub?

Asked by: Sponge
The load will be no different than it is with the 8 ohm load, except at the frequencies where this tweeter is crossed. This will be high enough in frequency not to matter, as it will not draw enough current to harm anything.
Answered by: MattP
Date published: 2014-10-29

Is it possible to wire an AMT1-4 tweeter, being 4 ohm, in combination with a dome tweeter and a woofer being 8 ohm?

Asked by: Sponge
Yes this is perfectly possible. You will want to wire it directly to the input of the cabinet with its own high pass filter installed in line.
Answered by: MattP
Date published: 2014-10-28

Can I use the DA AMT1-4 to replace a ribbon tweeter?

I want to replace a Foster Ribbon Tweeter with the AMT1-4 crossed over at 8khz in a Legacy Focus. Is this switch suitable? Does this tweeter require a rear chamber? I do not want di-pole.
Asked by: Don Eaton
This tweeter is closed back and does not require a chamber. A crossover point of 8kHz will work fine assuming the original is 4 ohm.
Answered by: MattP
Date published: 2013-10-19

How good is the dispersion? Is it good for home theater, or single listening position?

Asked by: Meeke1
In general, tweeter dispersion is predicted by comparing the wave-length of the freq. in question with the driver diaphragm size. While an AMT works differently than other drivers, I have not heard any difference in dispersion as compared to similar size/shape drivers. Like a similar sized ribbon tweeter, the vertical dispersion is very tightly focused at the VHF, & moderately focused at mid-freq. The horz. should be fine to cover a fairly wide listening area (good for home theater).
Answered by: ears4hire
Date published: 2013-10-19

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