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Dayton Audio AMT Mini-8 Air Motion Transformer Tweeter 8 Ohm

Brand:| Model: AMT Mini-8
Overview
Dayton Audio's AMT Mini-8 Air Motion Transformer tweeter adds clarity, transient speed, and musical finesse to almost any loudspeaker design. The AMT Mini-8's compact housing is easy to mount anywhere, and groundbreaking AMT technology enables high output from this tiny driver.
Highlights
  • Advanced Air Motion Transformer design squeezes air
  • Folded Kapton ribbon diaphragm delivers clean, detailed, and highly dynamic output
  • Miniature design can be mounted virtually anywhere
  • Powerful, lightweight neodymium magnet structure for low distortion and high efficiency
  • Sonically similar to the best metal ribbon and planar tweeters
  • Includes free 2.25" diameter faceplate for front mounting
Part # 
275-095
Weight: 0.1278 lbs.  
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List Price$39.99
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Product Details

Dayton Audio AMT Mini-8 Air Motion Transformer Tweeter 8 Ohm

The Dayton Audio AMT Mini-8 model features a round housing and compact AMT element, for wide dispersion that easily replaces dome tweeters in retrofit or new design applications. The AMT Mini-8 is small enough to be used in compact satellite speakers, or installed in the center of a mid-woofer to create a full-bandwidth coaxial driver, or implemented in other ways -- including line arrays. The sealed rear chamber design of the AMT Mini-8 eliminates the need for a separate internal chamber in the loudspeaker enclosure.

Dayton Audio AMT (Air Motion Transformer) tweeters use groundbreaking transducer technology from the original Heil Air Motion Transformer to provide ultra-clean, detailed, and dynamic treble output. The pleated ribbon diaphragm of an AMT provides a large acoustic radiating area condensed into a compact chassis, for extremely high output and improved power handling.

Note: This tweeter was designed for press-fit mounting, but now includes a 2.25" diameter faceplate for front baffle mounting.



Product Specifications
  • Tweeter TypeRibbon
  • Impedance8 ohms
  • Power Handling (RMS)15 Watts
  • Frequency Response3,500 to 40,000 Hz
  • Sensitivity88 dB 1W/1m
Thiele-Small Parameters
  • Resonant Frequency (Fs)3,500 Hz
  • DC Resistance (Re)7.19 ohms
  • Total Q (Qts)2.80
Mounting Information
  • Overall Outside DiameterWith faceplate 2.25"
  • Cutout Diameter1.59"
  • Depth0.91"
Dayton Audio AMT Mini-8 Air Motion Transformer Tweeter 8 Ohm
  • BrandDayton Audio
  • ModelAMT Mini-8
  • Part Number275-095
  • UPC848791000652
  • Product CategoryTweeters
  • Unit of MeasureEA
  • Product Rating
    (9 Reviews)
  • Weight0.1278 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 AMT Mini-8 Air Motion Transformer Tweeter 8 Ohm
Dayton Audio AMT Mini-8 Air Motion Transformer Tweeter 8 Ohm is rated 4.8889 out of 5 by 9.
Rated 4 out of 5 by from Nice little tweeterI bought this mostly to check out the Air Motion thing on the cheap. I must say, I am impressed. It is very airy and detailed sounding and the larger mounting plate is nicer looking than I was expecting. It has pretty incredible off axis response; a lot like a ribbon. 5db down @ 18K measured 45deg off axis. I didn't take measurements above and below axis, I would expect similar performance as I believe the Air Motion technology is supposed to perform better than ribbons in this regard. They have a limited usable frequency range; above about 4.5K. So as long as your design calls for this they're good to go. Say in a three-way or used with a well behaved 5.25" in a two-way crossed 2nd order minimum.I made a supertweeter out of them crossed at about 10K 2nd order. I may try them with a waveguide in the future to better match the power response of whatever speaker I attach them to.Hard to beat at the price if you keep the limitations in mind.
Date published: 2014-01-08
Rated 5 out of 5 by from SWEET TWEETSInitially I was attracted to the look and form factor as in ease of modifying, being unable to leave anything alone! Upon opening nothing had changed. Excellent build quality! Wow! All cast and heavy. These also happened to be the perfect diameter to upgrade my auto tweeters, and as luck would have it my factory system used an 8 ohm mylar dome as stock. Given the ohm match and delicate nature of a 1/2" coiled mylar, I figured no additional crossover was needed, and these are now singing away wonderfully in my daily driver! Much more clean output and I was able to retain the factory look wiyh na little trimming and adhesive. Definitely worth the cash.
Date published: 2013-12-05
Rated 5 out of 5 by from A spectacularly accurate tiny tweeterI could not resist the temptation to order a pair of these. I have been a long time fan of the Heil design since it was introduced, but could never justify buying the original midrange/tweeter unit (WAY above my audio budget limit). When I received these, I was puzzled at how to build tweeter stands for them, but finally figured out to cut holes in 1/2 inch hardwood plywood slightly smaller than the tweeter diameter, and (with my trusty Dremel tool) carve out the front of the opening to the depth of the tweeter. After inserting the tweeter in the prepared hole, I fastened it in using metal strips attached to the #8 machine screws that extend from the back of the tweeters. I crossed the tweeters over using 6.8 mFd capacitors and an 8 Ohm L-pad for a crossover frequency at about 3500 Hz. Since this is a closed back driver, a simple 2-piece tweeter stand suffices--no box needed.As add-on super tweeters for the Dayton B-652's these are OUTSTANDING, providing 'air' and realism actually better than all but my most favorite (HiVi lower priced RT) ribbon tweeters. In terms of output, these are slightly less efficient than the ribbon tweeters I have tried (including the small and medium sized Beston models), but plenty enough to match the B652s, as well as some slightly more efficient home brew designs I have built lately.My only complaint is the lack of mounting hardware or mounting instructions (not a problem for someone with imagination, scrap wood, and a Dremel tool, but still...not quite up to the usual product support I have previously seen from Dayton Audio).This product definitely belongs on the short list of affordable, super-accurate, relatively inexpensive supertweeters for enhancing commercial speaker systems or home brew designs.
Date published: 2013-09-17

Product Q&A

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who own this product or have experience with it.
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Dayton Audio AMT Mini-8 Air Motion Transformer Tweeter 8 Ohm

What's the diameter of the face plates that come with these now?

Asked by: Rick64D
Diameter is 55mm. This will replace the original small face plate.
Answered by: CyberPit HILO
Date published: 2014-08-11

Whats the peak wattage on these things?

Asked by: shad
Peak power on this speaker is 30 watts.
Answered by: MattP
Date published: 2014-07-17

What value(s) for caps and resisters to make a first ...or perhaps a 2nd order cover...to use this as a super tweeter for my floor standing speaker that could use a bit mor air....crossed over at say 10K ( or would you recommend an over crossover point)

Asked by: xxxxxx
I would recommend a second order which would use values such as 1.5 uF and 0.2 mH. This will create a crossover point of 10,000 Hz.
Answered by: MattP
Date published: 2014-07-17

Would like to use these in a vehicle.  What value capacitors would you recommend for a simple 1st or 2nd order crossover?

Asked by: Synrg
I would recommend a 3.3 uF cap for this if you want to go first order. If you want second order, part number 266-474 will work well.
Answered by: MattP
Date published: 2014-02-26

I have a portable speaker build in mind that will probably see lots of bumps/vibrations. How durable are these things, compared to conventional domes etc?

Asked by: davedave
These will hold up as well as any other type tweeter in terms of durability.
Answered by: MattP
Date published: 2014-02-14

I purchase a pair of these AMTs before you offered free face plate. Can I still get a pair of face plates?

Asked by: ScottM8324
We may be able to work something out if you call our tech department. We do not offer these separately so we will have to try and see if we have any that came back with a defective or damaged product.
Answered by: MattP
Date published: 2014-01-28

Can this be used as a driver in a headphone? Seems like the biggest challenge would be the impedance; headphones tend to be much higher impedance than speakers.

Asked by: ClaytonJ2
Unfortunately this would not make for a very good headphone driver due to its lack of anything below about 5,000 Hz and extreme lack of excursion of any kind.
Answered by: MattP
Date published: 2014-01-17

Is this price for one driver or for a pair of drivers?

Asked by: rharv
This price is for one driver.
Answered by: MattP
Date published: 2013-12-20

Can someone tell me what the posotive and negative terminals are on this dynamic speaker?

Asked by: Dannialson
The larger terminal on this is the positive and the smaller terminal is the negative.
Answered by: Chrisf
Date published: 2013-11-12

lowest crossover points

Hello,just wondering what the recommended crossover points are for 2nd order and also if a 1st is possible at say, 10khz and upmany thanks
Asked by: fish fingers
Lowest crossover I would recommend for 2nd order would be about 9kHz, 1st order would have to be closer to 15 kHz.
Answered by: MattP
Date published: 2014-08-21

What size hole do I cut ??

"This tweeter is designed for press-fit mounting"Overall diameter: 1.59"So that's about 1 5/8?
Asked by: BrooklynJeff
1-5/8" will be slightly larger so you may want to start with 1-9/16. This is slightly smaller but it will be easier to ream a hole out gradually than try to make one smaller. Obviously test holes are recommended.
Answered by: MattP
Date published: 2013-10-10

how to mount in a mid woofer

In the discription u say this product can be "installed in the center of a mid-woofer to create a full-bandwidth coaxial driver," How exactly might this be done for example ? Or are u talking at the manufacturing level?
Asked by: Dirk B.
It could be done with some fabrication, such as a bracket, or mounted on a post coming from the pole of the motor (this would require removal of a phase plug - if equipped, or removal of the dustcap - which may affect driver characteristics and parameters). It would resemble a coaxial car audio driver.
Answered by: dynamo
Date published: 2013-09-13

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