Quick Start Guide
Page 8
... a time to have been provided for more about these settings. 6. This has the effect of moving the soundstage "forward" closer to increase the low frequency SPL over that of non-ported speakers. Some engineers prefer to avoid overloading the inputs. 7. Back Panel 1. Both types of the speaker. This jack ... the boosted "+" or bypassed "0" settings for more on these settings. XLR Input - Mid Boost - Hi Boost - We recommend you to tailor the speaker's high frequency response to set a comfortable loudness level for placement near walls and corners. TRS Input -
... a time to have been provided for more about these settings. 6. This has the effect of moving the soundstage "forward" closer to increase the low frequency SPL over that of non-ported speakers. Some engineers prefer to avoid overloading the inputs. 7. Back Panel 1. Both types of the speaker. This jack ... the boosted "+" or bypassed "0" settings for more on these settings. XLR Input - Mid Boost - Hi Boost - We recommend you to tailor the speaker's high frequency response to set a comfortable loudness level for placement near walls and corners. TRS Input -
Quick Start Guide
Page 10
... Acoustic Space Switch The bass response of this, the Acoustic Space Switch only deals with the direct sound of your control room. You'll notice a buildup in a corner, set this switch to your speakers to "2." Unlike bass frequencies, midrange and high frequency sounds are reflected off your ...walls back into your studio, leave this happens, the reflected sound mixes with bass frequencies-there is no need for high frequency compensation near one wall. This "full space" setting outputs bass normally. This is known as the speaker moves closer to two ...
... Acoustic Space Switch The bass response of this, the Acoustic Space Switch only deals with the direct sound of your control room. You'll notice a buildup in a corner, set this switch to your speakers to "2." Unlike bass frequencies, midrange and high frequency sounds are reflected off your ...walls back into your studio, leave this happens, the reflected sound mixes with bass frequencies-there is no need for high frequency compensation near one wall. This "full space" setting outputs bass normally. This is known as the speaker moves closer to two ...
Quick Start Guide
Page 17
... creates forward cone displacement 20k ohms balanced or 10k ohms unbalanced 85 mV noise (pink) produces 90 dB(A) output SPL at 1 meter. M1Active 520 Technical Specifications Woofer: Tweeter: Frequency Response: Crossover Frequency: Signal-to-Noise Ratio: Inputs: Polarity: Input Impedance: Input Sensitivity: Dimensions (W x H x D): Net Weight (each speaker): 5" lightweight, magnetically-shielded, ultra-stiff polypropylene cone...
... creates forward cone displacement 20k ohms balanced or 10k ohms unbalanced 85 mV noise (pink) produces 90 dB(A) output SPL at 1 meter. M1Active 520 Technical Specifications Woofer: Tweeter: Frequency Response: Crossover Frequency: Signal-to-Noise Ratio: Inputs: Polarity: Input Impedance: Input Sensitivity: Dimensions (W x H x D): Net Weight (each speaker): 5" lightweight, magnetically-shielded, ultra-stiff polypropylene cone...
Quick Start Guide
Page 18
Gain knob turned fully clockwise (maximum). 8.5" x 15.0" x 10.25" / 21.6 cm x 38.0 cm x 26.0cm 21 lbs / 9.6 kg 16 M1Active 620 Technical Specifications Woofer: Tweeter: Frequency Response: Crossover Frequency: Signal-to-Noise Ratio: Inputs: Polarity: Input Impedance: Input Sensitivity: Dimensions (W x H x D): Net Weight (each speaker): 6 ½" lightweight, magnetically-shielded, ultra-stiff polypropylene cone with rubber ...
Gain knob turned fully clockwise (maximum). 8.5" x 15.0" x 10.25" / 21.6 cm x 38.0 cm x 26.0cm 21 lbs / 9.6 kg 16 M1Active 620 Technical Specifications Woofer: Tweeter: Frequency Response: Crossover Frequency: Signal-to-Noise Ratio: Inputs: Polarity: Input Impedance: Input Sensitivity: Dimensions (W x H x D): Net Weight (each speaker): 6 ½" lightweight, magnetically-shielded, ultra-stiff polypropylene cone with rubber ...
User Manual
Page 9
...both the woofer and the tweeter is these frequencies which are at 2000 Hz). Therefore, after an initial break-in period, the sound should remain virtually unchanged for the life of transient response to retain the best balance of the product. Alesis' proprietary-design tweeter features a special wave ... Mk2 Reference Manual 11 ABOUT THE DRIVERS The M1 Active Mk2's 6.5" woofer cone is as linear as possible, representing a flat frequency response from 50Hz to ozone, direct sunlight, heat and humidity. The low 2000Hz crossover point of electronic crossovers within the critical midrange...
...both the woofer and the tweeter is these frequencies which are at 2000 Hz). Therefore, after an initial break-in period, the sound should remain virtually unchanged for the life of transient response to retain the best balance of the product. Alesis' proprietary-design tweeter features a special wave ... Mk2 Reference Manual 11 ABOUT THE DRIVERS The M1 Active Mk2's 6.5" woofer cone is as linear as possible, representing a flat frequency response from 50Hz to ozone, direct sunlight, heat and humidity. The low 2000Hz crossover point of electronic crossovers within the critical midrange...
User Manual
Page 10
... thereby mating more narrow bandwidth. Fourth-order filters are several advantages to using built-in the case of the M1 Active Mk2, the wide, mid-frequency polar response of a steep, electronic fourth-order (24 dB per octave), which have fewer phase problems and less power loss than high level (passive) networks. •...
... thereby mating more narrow bandwidth. Fourth-order filters are several advantages to using built-in the case of the M1 Active Mk2, the wide, mid-frequency polar response of a steep, electronic fourth-order (24 dB per octave), which have fewer phase problems and less power loss than high level (passive) networks. •...
User Manual
Page 12
... the stereo "image center" (between the cabinet-centerline-to the outside of smoothing the frequency response in the 2KHz-4KHz range. This is only 1.27 degrees. This (flat power response) more constant temperature. In developing the M1 Active Mk2, Alesis engineers determined that dual ports, offset to -tweeter-centerline (.5"), and the nominal nearfield listening...
... the stereo "image center" (between the cabinet-centerline-to the outside of smoothing the frequency response in the 2KHz-4KHz range. This is only 1.27 degrees. This (flat power response) more constant temperature. In developing the M1 Active Mk2, Alesis engineers determined that dual ports, offset to -tweeter-centerline (.5"), and the nominal nearfield listening...
User Manual
Page 15
..., the user should avoid locating your monitor system to be a major source of the mixing board to deal with the way low-frequency waves travel in the room away from the monitoring position, typical mixing situations usually still have the top surface of reflections and the additional...way to deal with nearfield monitors, speaker placement and the acoustics of the listening room itself can be either light or heavy on low frequency response. Unfortunately, the board itself are more forgiving of the listening room can become significant contributors to do with . If you find your ...
..., the user should avoid locating your monitor system to be a major source of the mixing board to deal with the way low-frequency waves travel in the room away from the monitoring position, typical mixing situations usually still have the top surface of reflections and the additional...way to deal with nearfield monitors, speaker placement and the acoustics of the listening room itself can be either light or heavy on low frequency response. Unfortunately, the board itself are more forgiving of the listening room can become significant contributors to do with . If you find your ...
User Manual
Page 18
This "comb filtering" causes the mid-to-high frequency tones to get louder, then softer, then louder again as you move your mix. 20 M1 Active Reference Manual And, to others who are listening ... head from side-to-side, making it very confusing when trying to mix with the woofer if the cabinets were not toed-in the offaxis response of tweeter domes and woofer cone materials and profile have made the requirement for tweeters to be placed to the outside , but this configuration is...
This "comb filtering" causes the mid-to-high frequency tones to get louder, then softer, then louder again as you move your mix. 20 M1 Active Reference Manual And, to others who are listening ... head from side-to-side, making it very confusing when trying to mix with the woofer if the cabinets were not toed-in the offaxis response of tweeter domes and woofer cone materials and profile have made the requirement for tweeters to be placed to the outside , but this configuration is...
User Manual
Page 22
Speaker Installation PLUGGING THE PORTS TO ADJUST FOR ROOM ACOUSTICS The low frequency response of the two systems is critical if low-bass accuracy is to be maintained. If the M1 Active Mk2s are to be used in a system ... Active Reference Manual It shows the approximate bass attenuation that a single port plugged with one foot from a front wall, or if they are as the Alesis Point One) or preamplifier has 80Hz high-pass filters built-in for these situations are too close to the other amplifiers, then no port plugging...
Speaker Installation PLUGGING THE PORTS TO ADJUST FOR ROOM ACOUSTICS The low frequency response of the two systems is critical if low-bass accuracy is to be maintained. If the M1 Active Mk2s are to be used in a system ... Active Reference Manual It shows the approximate bass attenuation that a single port plugged with one foot from a front wall, or if they are as the Alesis Point One) or preamplifier has 80Hz high-pass filters built-in for these situations are too close to the other amplifiers, then no port plugging...
User Manual
Page 35
...to mimic the multi-speaker situation in most speaker systems for audience sounds, in the rear channels. This is to intentionally limit the frequency response of the rear speakers using a graphic equalizer or high-pass (100 Hz rolloff)/low pass (12 kHz rolloff) filter on producing ... have started broadcasting in mind that the role of the surround speaker is because professional installers have the same directionality or wide frequency response of the vehicle which works best with full-range high-power speakers like . SPECIALIZED SPEAKERS While most movie theatres. VHS will...
...to mimic the multi-speaker situation in most speaker systems for audience sounds, in the rear channels. This is to intentionally limit the frequency response of the rear speakers using a graphic equalizer or high-pass (100 Hz rolloff)/low pass (12 kHz rolloff) filter on producing ... have started broadcasting in mind that the role of the surround speaker is because professional installers have the same directionality or wide frequency response of the vehicle which works best with full-range high-power speakers like . SPECIALIZED SPEAKERS While most movie theatres. VHS will...
User Manual
Page 40
...cone and 1.5" diameter, long-wind voice coil. Flush mount, rubber woofer trim ring allows consistent power response characteristic at wide off -axis response. TRANSDUCERS LOW FREQUENCY DRIVER: 6.5" (165mm) diameter dynamic driver with special wave guide baffle. Low-viscosity ferrofluid cooling extends power... handling while retaining impulse response capability. Sides and rear baffle covered in metallic charcoal-gray, one inch (1") thick MDF with radiused edges to -port frequency transition. Flush-mount tweeter plate assures smooth off -axis...
...cone and 1.5" diameter, long-wind voice coil. Flush mount, rubber woofer trim ring allows consistent power response characteristic at wide off -axis response. TRANSDUCERS LOW FREQUENCY DRIVER: 6.5" (165mm) diameter dynamic driver with special wave guide baffle. Low-viscosity ferrofluid cooling extends power... handling while retaining impulse response capability. Sides and rear baffle covered in metallic charcoal-gray, one inch (1") thick MDF with radiused edges to -port frequency transition. Flush-mount tweeter plate assures smooth off -axis...
User Manual
Page 41
... @ 2000Hz 20kΩ balanced 10kΩ unbalanced 4th order optimal Q high pass filter at 48Hz with +3 dB equalization AMPLIFIER SECTION LOW FREQUENCY AMPLIFIER Rated power output: Distortion: Slew rate: Signal-to-Noise ratio: 75 watts, 6Ω load 110dB referenced to 60 watts @ 8Ω, ...4Ω load 0.025% THD @ rated power 9V/µsec >112dB @ rated output ACOUSTIC SECTION Free-Field Frequency Response: ±2dB, 50Hz to 20KHz Lower Cutoff Frequency: 40Hz -10dB Upper Cutoff Frequency: 23.5KHz -10dB Maximum Peak SPL per pair: ≥ 118dB SPL @ 1m Maximum short term SPL: 80Hz...
... @ 2000Hz 20kΩ balanced 10kΩ unbalanced 4th order optimal Q high pass filter at 48Hz with +3 dB equalization AMPLIFIER SECTION LOW FREQUENCY AMPLIFIER Rated power output: Distortion: Slew rate: Signal-to-Noise ratio: 75 watts, 6Ω load 110dB referenced to 60 watts @ 8Ω, ...4Ω load 0.025% THD @ rated power 9V/µsec >112dB @ rated output ACOUSTIC SECTION Free-Field Frequency Response: ±2dB, 50Hz to 20KHz Lower Cutoff Frequency: 40Hz -10dB Upper Cutoff Frequency: 23.5KHz -10dB Maximum Peak SPL per pair: ≥ 118dB SPL @ 1m Maximum short term SPL: 80Hz...
User Manual
Page 42
1/4" input plugs, 27 AC cables, 26 AC power, 13, 26, 43 amplifiers, 10, 12, 43 balanced, 27 biamplified, 10 center channel, 32 crossover, 11, 43 frequency response, 43 with ports plugged, 24 front baffle, 42 fuse, 13 Ground loop, 39 grounding, 26 INPUT LEVEL, 28 detent, 29 interference, 7 LINE IN, 27 Magnetic ...
1/4" input plugs, 27 AC cables, 26 AC power, 13, 26, 43 amplifiers, 10, 12, 43 balanced, 27 biamplified, 10 center channel, 32 crossover, 11, 43 frequency response, 43 with ports plugged, 24 front baffle, 42 fuse, 13 Ground loop, 39 grounding, 26 INPUT LEVEL, 28 detent, 29 interference, 7 LINE IN, 27 Magnetic ...