Highlights

• 1" (25 mm) Dome Tweeter
• Custom tooled cast housing
• 1" (25mm) voice coil for extreme power handling and motor force
• Patented split gap motor with multiple copper shorting rings for an extended response with world class open and natural sound
• Industry leading +/- 1.6mm of linear excursion
• Triple fabric dome with proprietary unifying compound for world class damping
• Large roll surround for higher stroke and full range down to 1500Hz
• Chemically etched, friction fit, steel grille featuring artistic hole pattern design
• 250 Watts RMS power handling*

* All power ratings are figured using an electronic high pass crossover with a minimum crossover point of 3kHz at 24dB/Octave, 3.5kHz at 18dB/Octave, or 4kHz at 12dB/Octave.

Description

Description

Overview

The Master Series M1 tweeter is a high stroke, low distortion multilayer fabric dome 25mm tweeter. This tweeter features exceptionally high stroke to allow lower crossover points without compression.

The M1 tweeter features a split-gap design which provides ±1.6mm of linear excursion, approximately 5 to 6 times that of most other tweeters. The result is a wider operational bandwidth - as low at 1500 Hz - and distortion reduced by up to a factor of 4.

The M1 use a specially developed dome material. The dome's fabric is a lamination of silk, polyester, and cotton and treated with a proprietary compound to unify the layers but allow each to provide their own unique benefits. Silk adds the stretch/pull basic mechanical strength; polyester provides rigidity of shape; cotton provides improved damping.

The M1 does not use a rear chamber to lower its resonance; instead, a larger roll surround provides a lower resonance of the driver. This design allows for higher stroke as well, for full-range output down to 1500 Hz. And by removing the rear chamber, resonances from that chamber are eliminated. The elimination of the rear chamber results in an 11.7mm (15/32") mounting depth for freedom of positioning.

The M1 comes with a chemically etched steel grille featuring an anti-resonant hole-pattern with size of opening optimized for dispersion. The grille is mounted to the main tweeter with a friction-fit gasket ensuring vibration-free operation and eliminating visible screws.

Crossover Frequency and power handling

The M1 Tweeter is a wideband, high stroke tweeter. This gives it quite a bit of flexibility in operation. The following table summarizes general guidelines. As noted above, this is not a hard-and-fast set of limits, and the final installation needs to be considered when setting actual crossover values and gains.

Not that with lower power applications, these frequencies may be adjusted down; with higher power, you may need to adjust the frequencies up. Again, the actual implementation of the entire system needs to be considered when installing these products.

Thiele Small Parameters