Immerse yourself in the world of sound quality with the Alpair 7MS from Mark Audio. A high-fidelity audio driver equipped with innovative features such as the patent-pending Negative Camber Cone and the Mono suspension system. This new model offers numerous improvements, including a shortened break-in time and a machine-optimized, ultra-light voice coil. It is a full range 4" woofer designed for clear and high quality audio output. The special feature of this model is its high performance, which is comparable with traditional bass-midrange drivers of the same size. It has been developed with the dedicated music lover and high-fidelity enthusiast in mind.
The advanced design of the Alpair 7MS (mono suspension) is a radical departure from previous models. The 7MS is completely new and uses many new design components and manufacturing processes. The two main features are the patent-pending Negative Camber Cone and the Mono suspension system. Other important features include a specially developed gas-flow fiberglass chassis and a special ultra-light voice coil.
Highlights
- Latest model.
- The break-in time of the 7MS has been significantly reduced compared to previous models. Ten hours of light music at a moderate volume are sufficient for the suspension to reach its optimum operating behavior.
- An arrestor (as used in earlier Alpair models) provides an acoustic warning against accidental overdriving.
- The low-mass coil has a vented bobbin and the motor uses a custom copper plating to reduce distortion.
- The 7MS is a bass capable audio driver with comparable performance to traditional mid-bass drivers of the same size.
After the release of the Pluvia speaker series, which was very well received, Mark moved on to the next design evolution. As some of you will know, Mark's design ethos is mechanical efficiency, adding lightness and simplifying wherever possible. With these new drivers, Mark has managed to do more with much less.
The advanced design of the Alpair 7MS (mono suspension) is a radical departure from previous models. The 7MS is completely new and uses many new design components and manufacturing processes. The two main features are the patent-pending Negative Camber Cone and the mono suspension system. Other important features include a specially developed gas-flow fiberglass chassis and a special ultra-light voice coil.
The 7MS cone is an ultra-flat design that enables a wide dispersion pattern. The outer part of the cone profile is angled backwards, creating a +180 degree dispersion pattern to optimize stereo imaging. Voices from high-quality sources sound more natural and detailed as the center cap and cone profile are geometrically closely matched.
Much technical research has gone into balancing the driver's drive train (cone, cap, coil and suspension) between its axis of motion and the corresponding center of gravity. The new negative camber cone allows the coil to be repositioned to avoid the need for a traditional suspension (spider). Mark's new mono suspension design frees the coil from a restrictive spider glued to it, improving the transfer of energy from the driver's motor to the cone. The new suspension uses an all-new custom blend of four synthetic materials, resulting in improved linearity at low frequency loads.
The different pitches and rounded angles help to improve sound wave dispersion. Specially extended terminals are provided for plug-in connections or easy soldering for cables up to 1.5 mm in diameter.
The 7MS is an audio driver designed for the dedicated music lover and high-fidelity enthusiast. Attention to design detail and a tight manufacturing standard with a tolerance of +/- 0.05mm on most component alignments set this new generation of Markaudio transducers apart from the crowd.
Features
- Nominal diameter 10.16 cm
- Power handling (QMW) 15 watts
- Impedance (Z) 8 Ohm
- Sensitivity (SPL at 1m / 2.83V) 86.3 dB
- Frequency response 70 to 30,000 Hz
- DC resistance (Re) 7.2 Ohm
- Resonant frequency (Fs) 75 Hz
- Mechanical quality (Qms) 2.35
- Electrical quality (Qes) 0.74
- Total quality (Qts) 0.57
- Moving mass (Mms) 3.3g
- Compliance of the suspension (Cms)1.384 mm/N
- Diaphragm area (Sd) 50.27 cm²
- Force factor (BL) 3.9 Tm
- Equivalent volume (Vas) 4.955 liters
- Maximum deflection (Xmax) 4.5 mm
- Outer diameter 11.2 cm
- Total depth 6.19 cm
- Cut-out diameter 9.9 cm
- Fixing holes 5
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