Alesis M1Active MKII User Manual

Alesis M1Active MKII Manual

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  • Alesis M1Active MKII | User Manual - Page 1
  • Alesis M1Active MKII | User Manual - Page 2
  • Alesis M1Active MKII | User Manual - Page 3
    ™ REFERENCE MANUAL © 2001-2005 ALESIS CORPORATION
  • Alesis M1Active MKII | User Manual - Page 4
    Alesis M1 Active Mk2 Reference Manual © Copyright 2001-2005, Alesis Studio Electronics, Inc. All rights reserved. Reproduction in whole or in part is prohibited. "M1 Active Mk2" and "Superport" are trademarks of Alesis Studio Electronics, Inc. ALESIS CONTACT INFORMATION Alesis Studio Electronics,
  • Alesis M1Active MKII | User Manual - Page 5
    reproduction: matched vs. specialized speakers 37 TROUBLESHOOTING 39 Troubleshooting Index 39 Maintenance 40 SPECIFICATIONS 42 Enclosure 42 Transducers 42 Crossover section 43 Amplifier Section 43 Acoustic Section 43 General 43 INDEX 44 M1 Active Mk2 Reference Manual 1
  • Alesis M1Active MKII | User Manual - Page 6
    Active Mk2 Biamplified Reference Monitors. To take full advantage of the M1 Active Mk2's operation, and to enjoy long and trouble-free use, please read this user's manual carefully. We value any comments you may have about this monitor system, this manual, your Alesis dealer or our factory service
  • Alesis M1Active MKII | User Manual - Page 7
    you need to return the speakers for servicing. The shipping carton should contain the following items: • This instruction manual • M1 Actives with the same serial numbers as shown on the shipping cartons • Two AC power cords (NEMA to CEE type) • Alesis warranty card ✪ It is important to register
  • Alesis M1Active MKII | User Manual - Page 8
    weight or size gain. Since the M1 Active Mk2s are self-powered, DO NOT connect them to the speaker output of another amplifier (such as a powered mixer or hifi receiver). Connect them only to the line-level outputs of such devices (+4 dBu nominal, +24 dBu maximum). 10 M1 Active Reference Manual
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    About the M1 Active Mk2 TONE Tonally, every effort has been made to create a powered monitor that is as linear as possible, representing a flat frequency response from 50Hz to 20KHz ±2dB. (see p. 21) Additionally, the use of electronic crossovers within the critical upper midrange frequencies has
  • Alesis M1Active MKII | User Manual - Page 10
    CROSSOVERS The M1 Active Mk2 uses a 75W woofer amp and a 25W tweeter amp along with 4th order high and low pass electronic crossover filters centered at 2000Hz. Electronic crossovers, which separate the frequencies before being sent to the amplifiers, have fewer phase problems and less power loss
  • Alesis M1Active MKII | User Manual - Page 11
    M1 Active Mk2 THE M1 ACTIVE MK2 POWER SUPPLY The M1 Active Mk2 employs a regulated switching power supply. This type of supply has previously only been available in amplifiers sold at the very high end of the Pro Audio market. Most power intramodal vibration. M1 Active Mk2 Reference Manual 13
  • Alesis M1Active MKII | User Manual - Page 12
    frequency and power response. This (flat power response) more closely characterizes the way humans hear. On a horizontal polar response curve of the M1 Active Mk2, with the cabinet placed vertically, the tweeter response angle increases the port's air entry efficiency. 14 M1 Active Reference Manual
  • Alesis M1Active MKII | User Manual - Page 13
    engineers carry their own speakers around because they know how they will sound in almost any room. Now, even the big studios use smaller speakers to augment their big monitoring systems, and nearfield monitors have become proven tools in the recording business. M1 Active Mk2 Reference Manual 15
  • Alesis M1Active MKII | User Manual - Page 14
    About the M1 Active Mk2 16 M1 Active Reference Manual
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    frequency waves travel in closed spaces. If you find your monitor system to be either light or heavy on the bottom, try moving them around within your listening room. You should avoid locating your M1 Active Mk2s via a reflection off the mixer main control panel: M1 Active Mk2 Reference Manual 17
  • Alesis M1Active MKII | User Manual - Page 16
    , the reflective path off the console's control panel is now blocked by the meter bridge. Direct Path Direct Path Avoids Console Random Reflections Moving the monitors to a position behind the meter bridge causes the bridge to block the offending reflective path 18 M1 Active Reference Manual
  • Alesis M1Active MKII | User Manual - Page 17
    Monitor Right Monitor The speakers and listener should be at the three corners of a triangle having equal length sides Prime Listening Position NOTE: On some mounting surfaces the vinyl finish of the M1 Active Mk2's cabinet may cause it to slip too easily. Included with this reference manual
  • Alesis M1Active MKII | User Manual - Page 18
    Speaker Installation STEREO NEARFIELD PLACEMENT OF THE M1 ACTIVE MK2 NOTE: We recommend that the M1 Active Mk2 speakers be placed with the tweeters to the inside, not the outside, of the listening triangle. The "classic" studio monitor layout used to be that the tweeters be placed to the outside of
  • Alesis M1Active MKII | User Manual - Page 19
    the recording engineer to see over the speakers and into the studio. Horizontal placement is a recommended arrangement with the M1 Active Mk2 because the left and right mirror-imaged pair permits a symmetrical either sidewalls or the console coloring your mix. M1 Active Mk2 Reference Manual 21
  • Alesis M1Active MKII | User Manual - Page 20
    possible drawbacks to vertical placement of a nearfield monitor relating mostly to room interaction effects. Vertical placement allows the M1 Active Mk2s to portray your mix with the widest and recording space would work well with the M1 Active Mk2s set up vertically. 22 M1 Active Reference Manual
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    expertly designed car audio system can approach the imaging and soundstaging capabilities of an optimally setup studio or living room, but most times this is NOT the case. The inherent limitations of an other) car audio systems, and evaluate your mix accordingly. M1 Active Mk2 Reference Manual 23
  • Alesis M1Active MKII | User Manual - Page 22
    Speaker Installation PLUGGING THE PORTS TO ADJUST FOR ROOM ACOUSTICS The low frequency response of the M1 Active Mk2s can be custom tailored by plugging the ports. If the speakers must be the approximate bass attenuation that can be expected with one port plugged. 24 M1 Active Reference Manual
  • Alesis M1Active MKII | User Manual - Page 23
    Speaker Installation M1 Active Mk2 Reference Manual 25
  • Alesis M1Active MKII | User Manual - Page 24
    as simple as possible to set up and use. However, please follow the instructions to ensure that you get the best possible performance from your monitors. Before connecting the speakers, make sure the power switches of the M1 Active Mk2s and any equipment they will be connected to are turned OFF. AC
  • Alesis M1Active MKII | User Manual - Page 25
    panel. A blue power indicator lamp is on the front panel. INPUT CONNECTIONS Almost any conventional line-level source may be plugged into the M1 Active Mk2's LINE INPUT jack. "RCA phono" type. These may be plugged directly into the M1 Active Mk2's LINE IN jacks. M1 Active Mk2 Reference Manual 27
  • Alesis M1Active MKII | User Manual - Page 26
    cable. Many consoles (such as the Alesis Studio series) feature balanced outputs on 1/4" M1 Active Mk2 should be as loud as possible. The M1 Active Mk2s' INPUT LEVEL control, being last in the signal chain, is the worst place to make up gain lost earlier in the system. 28 M1 Active Reference Manual
  • Alesis M1Active MKII | User Manual - Page 27
    Note that the numbers on the back panel are only a rough guide; for precise left/right imaging, use pink noise or test tones and will produce full amplifier output (102 dB SPL "A" weighted from two speakers at 1 meter). For the technically-minded control room use M1 Active Mk2 Reference Manual 29
  • Alesis M1Active MKII | User Manual - Page 28
    . For extremely loud mid-field and far-field monitoring, we recommend the Alesis Monitor Two speaker with a 300-watt per channel amplifier. Many studios will check recordings on both systems, alternating to avoid ear fatigue and to gain perspective on the mix. 30 M1 Active Reference Manual
  • Alesis M1Active MKII | User Manual - Page 29
    music on surround systems, even if they're not working for film or video applications. Powered monitors like the Alesis M1 Active Mk2 Biamplified Reference Monitor have proven to be a simple, cost-effective way to add five-channel surround to control rooms. M1 Active Mk2 Reference Manual 31
  • Alesis M1Active MKII | User Manual - Page 30
    could lead to some drastic changes in spatial perception. In developing the M1 Active Mk2s for use as left, center and right front channel sources, we a hard center. There is no image wander, as the frequencies change, for instance. And the classic listening "sweet spot" M1 Active Reference Manual
  • Alesis M1Active MKII | User Manual - Page 31
    Surround Sound PLACEMENT OF THE CENTER M1 ACTIVE MK2 SPEAKER IN THE STUDIO The left, center and right speakers should all be placed in an arc so that the will be of little consequence since most of the dialogue will be mixed specifically into the center channel. M1 Active Mk2 Reference Manual 33
  • Alesis M1Active MKII | User Manual - Page 32
    Alesis engineers' experience fine-tuning the performance of the SMS Monitoring M1 Active Mk2s studio. If you do not have at least 3 feet to the back of your studio, then the speakers will work better if placed diagonally in the rear corner as shown on the next page. 34 M1 Active Reference Manual
  • Alesis M1Active MKII | User Manual - Page 33
    Surround Sound M1 Active Mk2 Reference Manual 35
  • Alesis M1Active MKII | User Manual - Page 34
    then attach the M1 Active Mk2s to the mount, allowing room for the rear-panel input and AC connections. The M1 Active Mk2s weigh 19.5 lbs support the speakers) and into a wooden stud using hardened screws or other fastener rated to hold at least two times that weight. 36 M1 Active Reference Manual
  • Alesis M1Active MKII | User Manual - Page 35
    wide frequency response of the M1 Active Mk2s. When mixing for film, speakers with a broad ambient, non-directional response are used to mimic the multi-speaker situation in most movie theatres. Keep this in mind when making music mixes with full-range high-power speakers like the M1 Active Mk2s as
  • Alesis M1Active MKII | User Manual - Page 36
    designed to produce an enveloping environment very similar to that of a home theater. The use of M1 Active Mk2s (or any monopolar speaker) as full-range surrounds would be useful in the following cases: , and Dolby Digital are trademarks of Dolby Laboratories, Inc. 38 M1 Active Reference Manual
  • Alesis M1Active MKII | User Manual - Page 37
    TROUBLESHOOTING INDEX If you experience problems while using the M1 Active/Surround systems, please use the following table to locate possible causes and solutions before contacting Alesis Technical Support for assistance. Symptom Hum or buzz No sound Unfocused sound, bass frequencies
  • Alesis M1Active MKII | User Manual - Page 38
    . The M1 Active Mk2/Surround speakers require no periodic maintenance. REFER ALL SERVICING TO ALESIS We believe that the M1 Active Mk2 is one of the most reliable powered monitors that can be made using current technology, and should provide years of trouble-free use. However, should problems occur
  • Alesis M1Active MKII | User Manual - Page 39
    and Canada are not covered by this Limited Warranty and may or may not be covered by an independent distributor warranty in the country of sale. Do not return products to the factory unless you have been given specific instructions to do so. M1 Active Mk2 Reference Manual 41
  • Alesis M1Active MKII | User Manual - Page 40
    FREQUENCY DRIVER: 1" silk soft-dome tweeter with special wave guide baffle. Low-viscosity ferrofluid cooling extends power handling while retaining impulse response capability. Dual magnet structure uses top magnet in opposed ("bucking") configuration for magnetic shielding. 42 M1 Active Reference
  • Alesis M1Active MKII | User Manual - Page 41
    GENERAL Power Consumption: AC Dropout Voltage: Weight: Dimensions (H x W x D): 120 watts with musical program, loud mix 12 watts quiescent (idle) 120V AC version: 80V AC 240V AC versions: 160V AC 19.5 lbs. (8.9 kg) each 15" (38.1 cm) x 8.5" (21.6 cm) x 10" (25.3 cm) M1 Active Mk2 Reference Manual
  • Alesis M1Active MKII | User Manual - Page 42
    Polarity, 27 ports, 14 plugging, 24 power supply, 13 reflections, 17, 20, 21 Safety, 3 service, 4, 40 spacing, 19 SPL, 29 subwoofer, 24 Surround sound, 31 time alignment circuit, 12 tweeter, 11, 42 mirror to inside, 20 offset, 14 warranty, 9, 45 woofer, 11, 42 XLR, 28 44 M1 Active Reference Manual
  • Alesis M1Active MKII | User Manual - Page 43
  • Alesis M1Active MKII | User Manual - Page 44
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