Mundorf AMTU60W1.1-C Air Motion Tweeter

Mundorf AMTU60W1.1-C Air Motion Tweeter

Mundorf AMT U60W1.1 Data Sheet

AMT U.Series tweeters are gaining more and more popularity among discerning DIY loudspeaker builders. In order to meet their demands in terms of precise but easy baffle-front mounting and quality finish, from now on, every U.Series model will come also with an attractive black aluminum faceplate. A precisely fitting cutout in the back of the 6mm! thick plate ensures that the AMT motor unit is perfectly centered and can be integrated flush into the loudspeaker baffle with an enlarged contact surface.

Each tweeter includes an extra faceplate from the factory. This allows your choice of a 94mm round flange or 92mm x 48mm rectangular flange.

AMTU60W1.1 and AMT U80W1.1 could be described as the small and the large all-rounder of this product range. Both can be used in small or medium 2-way and 3-way systems. AMT U60W1.1 offers a slightly larger vertical radiation angle. So it‘s ideally suited for situations with a short listening distance. Both convince with the decisive quality features of the AMT U.Series with Mundorf diaphragm: Exceptionally low K3 / K5 distortion data, a truly powerful music performance within the entire application range, and, at the same time, the fine micro-dynamics and richness of music details that distinguish all Mundorf AMT’s.

AMT U-SERIES
Our goal: A ‘reduced to the maximum’ model range of AMT tweeters that cover all possible applications in the home- and studio audio. The development engineers, therefore, had the task of keeping the design as simple, straightforward, and versatile as possible without compromising the central AMT element -the diaphragm- which determines the tweeter‘s final sound quality. Rather, this should be further optimized based on the experience and knowledge gained from more than 15 years of our diaphragm development.

All of our AMT diaphragms are manufactured in-house by a unique manufacturing process of our own development. The mixture of our basic diaphragm material was optimized with a focus on its acoustic properties, hereafter the manufacturing process was tailored to ensure the very best acoustical result possible with every single diaphragm material mix.

Every detail of our diaphragm‘s geometry is based on a deep understanding of the mechanical requirements and physical properties of an AMT diaphragm. Only with this knowledge is it possible to achieve the perfect ratio of a low diaphragm weight, the highest possible diaphragm flexibility, and the most effective inner damping at a maximum of diaphragm stability. Even the slightest shift within this well-balanced ratio would lead to audibly worse results. This out-balanced ratio makes the Mundorf AMT diaphragm one of its kind. Due to its exceptionally high inner damping, it is characterized by extremely low distortion data. This applies particularly to the odd-numbered harmonic distortions K3 and K5. Embedded in a well-thought-out, optimized overall concept, this membrane technology can reproduce the highest SPL as well as the finest dynamic nuances with extremely low distortion. So, even at very high volume music performance never gets ‘annoying’.

The relatively heavyweight of the diaphragm and its structural stiffness, together with extra strong magnet systems, lead to a remarkably powerful music reproduction down to its resonance frequency! In addition to the extremely low K3 / K5 distortion data, this is another unique feature of the Mundorf AMT diaphragms.

The correct interaction of the diaphragm and damping of its rear volume was also carefully ascertained. In addition to aesthetic aspects, a simple structure easy to produce serially with utmost precision, and a robust overall finish were crucial for the final shape of the new AMT U.Series.

• Nominal Impedance, 4 Ω
• DC resistance, Re 3.9 Ω
• Effective piston area, Sd 20.1 cm²
• Free air resonance, Fs 2350 Hz
• Sensitivity (2.83 V / 1 m), 93dB
• Frequency range, 2100-34000 Hz
• Net weight, 332 g