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DRIVE UNITS BY MANUFACTURER:
AIRMT-130
Categories: Monacor Tweeters Ribbon Tweeters

Air motion transformers (AMT) are a unique type of high-end ribbon tweeter which were developed by German physicist Oskar Heil during his research into the characteristics of the human ear.
Although AMTs are members of the ribbon family, they have a radically different mode of operation: these tweeters feature a specially folded / pleated diaphragm that expands and contracts along its length like a bellows transforming an electrical signal into air waves and can therefore technically be viewed as a type of sound modulated air pump.The folding of the AMT diaphragm offers a larger active radiating area in the minimum of space.
AMT tweeters have a highly dynamic sound with an excellent transient response, very high efficiency and low harmonic distortion.
We recommend a minimum crossover frequency of 3kHz / 18db octave.
| Frequency range | 3kHz-30kHz | Nominal impedance (Zn) | 8 Ω |
| Ribbon dimensions | - | DC resistance (Ribbon) | 5.2 Ω |
| Effective area (squared) | - | RMS power handling | 60 W |
| Crossover frequency | 3kHz 18db | Peak power | 120W |
| Sensitivity (2.83V/1m) | 98dB | Faceplate | 130x90mm |
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New Foam covers supplies by WHF have completely changed the appearance- they look brand new! Great quality foam, very reasonably priced and quick delivery. Delighted with they now look and sound - will hang on to them forever now.
Excellent upgrade, works perfectly with the speakers it's just soldier and play, they takeaway the over intensity of the original tweeters.
I've had my Mission 734s for about 30 years and for the last five or so the bass units have been falling to pieces. I was about to take the speakers to the tip, but didn't have the heart knowing how capable these used to be. I did a little internet research and these Monacor replacements appeared to do the job. Next day delivery from Willys was impressive, as was the killer sound once the replacements were fitted (which was a simple job). I'd forgotten how these speakers make the windows rattle. Very happy customer!
Excellent service from Willys-Hifi. Caroline was very helpful and patient when answering my queries. Please be aware that some soldering is required when connecting the tweeters. Something I haven't done since I was at school over 40 years ago! They do sound good though, listening to Smoke on the Water as I write , wow 😆
thx you so much for helping me geting the twiters for my speakers i hope all good for your bisnis in the futur and that it will never close i recemed you to the norwigen hifikluben its a store in norway for parts and hifi so you brobely will get order from ther now thx agine for the parts btw you need to put a bit of fome on the back side of the speakers for it to mount in the b&w cmd1 se to make them fit i will leave som pictur of the istalsjon
