Alesis Monitor Two (Studio reference monitor)

List-ID: 10647930022 Apr 22:48
  • Description
  • Specification
  • One pair of Alesis monitor two speakers
    For recording studio or listening pleasure
    Original price RM4000


    When it was first announced that Alesis were producing the Monitor One nearfield monitor, there was no shortage of people asking what an earth they were up to — after all, why should a company with a history built on effects units and digital recorders suddenly start messing about with loudspeakers? Loudspeaker design seems to demand both engineering expertise and more than a modicum of inspired intuition, but what the doubters didn't know was that Alesis had taken on the services of a loudspeaker design team with a view to setting up a live sound division. The Monitor One was really a toe‑in‑the‑water test of their design and manufacturing capability, and the end product was an affordable, great‑sounding nearfield monitor.

    A couple of trade shows back, I sneaked a preview of the Monitor Twos, a pair of full‑range monitors which were then still under development. Finally, the production Monitor Twos have landed in the UK, only to fall straight into my expectant clutches for review.
    3-way Design

    The Monitor One is a two‑way nearfield design, and it appears that the same design principles and concepts have been extended to the Monitor Two's 3‑way, full‑range design.

    Measuring a chunky 355 x 355 x 510mm, the cabinets, which are built as a mirrored pair, are once again fabricated from what appears to be MDF covered in a thin, slightly rubbery grey veneer. The cabinet corners are protected by simple corner mouldings, and as with the Monitor Ones, the drivers are recessed, so as to be flush with the front baffle. The bass and mid drivers have radiused rubber surrounds which cover the speaker rim, and provide a smooth acoustic transition between the cone and the cabinet.

    Connection to the cabinets is via conventional screw terminals, which also accept standard banana plugs.
    Speaker Design

    Life must be very difficult for loudspeaker designers, because they're all faced with the same set of design parameters, and all designs involve some sort of compromise. In one direction, you can go all out for acoustic efficiency, but high‑efficiency designs can suffer resonance problems, making them sound more coloured than their less efficient counterparts. At the other end of the scale, you have the ATC approach, where immensely expensive engineering combined with highly damped materials produces an extremely accurate, uncoloured sound, but apart from the high cost of the speakers, you also need plenty of amplifier power to drive them.

    Most studio monitors take the middle ground, offering reasonable efficiency combined with a sound that's as accurate as possible, especially in the mid‑range, where most of the critical audio detail resides.
    In Serious Treble

    At the treble end, Alesis have chosen to go with a soft‑dome tweeter, and from my experience, it's always been the monitors with soft‑dome tweeters that have the sweetest sound. In the case of the Monitor Twos, the tweeter uses a 1‑inch diameter, treated silk dome diaphragm driven by a ferrofluid‑cooled magnetic system, and, as far as I can see, it's the same tweeter as used in the Monitor Ones.

    A passive 2nd and 3rd order crossover with a nominal 4Ω input impedance brings the tweeter into play at 6kHz. This is rather higher than in the Monitor One design, because of the inclusion of a mid‑range driver. This means that the Monitor Two tweeter handles a narrower part of the audio spectrum than the Monitor One tweeter. One result of this is that the overall system power handling can be increased significantly without overtaxing the Monitor Two tweeter.
    Round The Middle

    Handling the mid‑range is a 5‑inch cone driver based around a mineral‑filled polypropylene cone in a soft rubber roll surround. This driver appears to be very highly damped, which would help account for the crisp mid‑range and pinpoint accurate stereo imaging — on recordings made with RSS or Q Sound 3D processing, you really can pick out those 'off‑stage' sounds as well as those hanging between the speakers. Because the mid‑range driver only handles frequencies between 1.5kHz and 6kHz, it has a relatively stress‑free life, and avoids the high cone excursions that the bass/mid drivers in two‑way systems are subjected to.
    At The Deep End

    At the bass end is a substantial 10‑inch driver using the same mineral‑filled polypropylene cone construction as the mid driver, and powered by a three‑inch voice coil. This is loaded by a ported cabinet, and as with the Monitor One, the port is rear‑facing. Another feature carried over from the Monitor One is the Superport technology, which involves using a large‑diameter, folded pipe to avoid port turbulence and to maintain consistent port loading at high sound levels. With narrow, short ports, turbulence can change the effective port size at high sound levels, so that the loading on the speaker changes.

    The result of all this advanced design is that the Monitor Twos can reproduce frequencies from 40Hz to 18kHz, yet they're efficient enough at 90dB/Watt@1m to sound good with amplifers rated from around 75 Watts per channel up to the rated maximum of 200 Watts (peak). I have heard these monitors running with an Alesis Matica amplifier, and they sound really tight. For my own tests at home, I used my venerable Yamaha 2075, and although the results were still excellent, there was a trace of ragginess that using a better and more powerful amplifier would have overcome. There is a moral here — don't simply assume that one power amplifier is much like another! It pays to spend a bit extra on something that's going to do the job properly.
    The Sound

    One of the benefits of a three‑way design is that each driver can concentrate on getting its own part of the audio spectrum right, and in the case of the Monitor Twos, that results in a deep, well‑controlled bass end that hasn't been tuned to hell just to make it sound impressive. Instead, you get a bass you can really feel, but it doesn't overpower or get in the way of mid‑range detail.

    The mid‑range and high‑frequency drivers blend seamlessly, and another advantage of the three‑way design is that the upper crossover frequency is kept well away from the vital speech area of the frequency spectrum. The outcome is a highly detailed sound, and the tonality is also very smooth, which means that you can listen for long periods without having to reach for the aspirin.
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Price
RM 1,200
Location
Selangor - Damansara Utama
Condition
Pre-owned (Used)
Private
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