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Alesis M1-ACTIVE-MKII (PAIR)
Professional Accuracy, Clarity and Performance in an Affordable Powered Monitor
By combining our expertise in reference monitor design with our proven track record
in studio amplification, Alesis' new M1 Active"! Biamplified Reference Monitor offers
the incredibly accurate response that perfectly translates to every playback system.
Its internal active crossover and custom-designed dual amplifiers ensure an extremely
consistent performance under a variety of different studio conditions and program
material. The result is a broad, extremely flat frequency response, clear imaging
with a wide sweet spot, high power handling and detailed high- and mid-frequency
response that only a professional powered monitor can deliver.
Custom Drivers Designed For Active Monitoring
The M1 Active's woofer and tweeter were specifically designed for the most linear,
low distortion response in powered monitoring applications. Its 6.5" woofer cone
is formulated from non-woven carbon fiber. It's a material that has been used for
the skins of combat aircraft wings, since it offers high tensile strength and low
weight. In fact, carbon fiber is 25% lighter than polypropylene (the most common
driver material) and hence provides quicker transient response in the low frequency
range for superb bass response as well as a vast improvement in the detail of critical
upper-mid frequencies. The M1 Active's 1" tweeter dome is made of pure silk, which
offers a natural response that aids in preventing ear fatigue during long mix sessions.
It also features an internal pole piece mounted phasing plug and is ferrofluid cooled
to maintain the best balance of transient response to power handling.
Active Bi-Amplifiers and Electronic Crossovers
Two audiophile-quality amplifiers-a 75 watt woofer amp and a 25 watt tweeter amp-were
developed for the M1 Active, along with 8th order high- and low-pass electronic crossover
filters. The crossover point was carefully chosen at a low 1500Hz, and produces an
extremely wide dispersion zone as well as low midrange coloration. Also, the special
time alignment circuitry that's been added to the tweeter section of this crossover
allows the output of frequencies from the high and low drivers to occur in perfect
synchronization, avoiding the time smear that's typical in less advanced powered
speakers.
Attractive Cabinet Design with Dual Ports and Offset Tweeter
In developing the M1 Active, the Alesis engineering team discovered that dual font-mounted
ports provided the fastest, most coherent and extended low frequency augmentation.
Also, the unique offset design of the high frequency driver allows for the flattest
frequency and power response in a speaker that offers such wide dispersion. The M1
Active's attractive mirror-imaged, charcoal- toned cabinet and magnetically-shielded
drivers allow for placement in close proximity with computer or video monitors, and
offers the added benefit of blending beautifully into your studio's decor without
being obtrusive. They may be mounted in either a horizontal or vertical placement
to best fit your studio's requirements.
The Alesis M1 Active"!
With the lineage of our TEC Award-winning Monitor Onet Studio Reference Monitor,
Alesis speakers have already become a standard in project and professional studios
around the world. If you're looking for the same great accuracy and detailed response
in a powered system that's truly affordable, the answer is clear: the new M1 Active
from Alesis.
Specifications:
- Low Frequency Driver: 6.5" non-woven carbon fiberwith Santoprene surround and dual
magnet shielded configuration
- High Frequency Driver: 1" silk dome with mediumviscosity ferrofluid coolant and dual
magnet shielded configuration
- Crossover: 1500Hz, 8th-order, 48dB/octave filters
- Input Impedance: 20k ohm balanced, 10k ohm unbalanced
- LF Filter: 2nd order, "optimal Q" high pass, +1dBboost @ 50Hz
- LF Amplifier: 75 watts, 8 ohm load
- LF Amp Distortion: less than 0.03% thd @ 30w
- LF amp slew rate: >19V/µsec
- LF Amp S/N Ratio: >110dB, ref. 60W @ 8 ohm,A-wtg., 1kHz
- HF Amplifier: 25 watts, 4 ohm load
- HF Amp Distortion: less than 0.06% thd @ rated power
- LF amp slew rate less than 9V/µsec
- HF Amp S/N Ratio: >112dB @ rated output
- Frequency Range: 38 Hz - 23.5 kHz (-10dB point)
- Connectors: Combination XLR-1/4" jack with inputlevel control
- Dimensions: (W x H x D) 8.5" x 15" x 9.75" (381 x216 x 248mm)
- Weight: 19.5 lbs. (8.9 kg) each
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