Alpair 7 MS

70mm   Fullrange drive unit
double ferrite magnet

  • State of the art full range drive unit with Mono Suspension and Negative Camber technologies
  • 4in grey or gold colour magnesium alloy cone
  • Operating range to 30KHz –very linear response
  • Negative camber cone profile –extremely broad directivity pattern
  • Advanced low-distortion motor design
  • Patented long-stroke Mono-suspension technology –spiderless design
  • Aerodynamically sculpted surface-mount reinforced polymer basket

New technology Full Range audio driver.

The advanced design Alpair 7MS (mono suspension) is a radical departure from previous models. The 7MS is completely new, utilising many new design components and manufacturing processes. The two main features are the patent-pending Negative Camber Cone and Mono suspension system. Other key features include a custom designed, gas-flowed glass fibre chassis and dedicated ultra light voice coil.

Negative Camber Cone (patent-pending). The 7MS cone is an ultra shallow design affording a wide dispersion pattern. The outer section of the cone profile is angled backwards creating a +180 degrees emittance pattern to help optimise stereo imaging. Vocals from quality sources sound more natural and detailed as the central cap and cone profile are geometrically close-aligned.

Mono Suspension (patent-pending). Much technical research has been done to balance the driver’s powertrain (cone, cap, coil and suspension) between its axis of travel and the corresponding centre of gravity. The new negative-camber cone facilitates the re positioning of the coil to avoid the need for a traditional rear suspension (spider). This new mono suspension design frees the coil from having a restrictive spider bonded to it, improving the transfer of energy from the driver’s motor to its cone. The new suspension employs an all new custom mix of four synthetic materials, resulting in improved linearity under low frequency loads.

The 7MS all new chassis is optimised to enhance airflow. The various slopes and rounded angles help improve sound wave emittance. Custom extended terminals are provided for push fit connectors or light soldering for cables up to 1.5mm diameter.

Other features. The run-in time for the 7MS is significantly reduced compared to previous models. Ten hours of light music at moderate volumes is sufficient for the suspension to reach its optimal operating pattern. An Arrestor (as deployed in previous Alpair models) provides an audible warning of accidental excess excursion. The low mass coil has a vented former and the motor employs custom made copper plating to reduce distortion.

The 7MS is an audio driver designed for the dedicated music lover and High Fidelity enthusiast. Attention to design detail along with an close tolerance manufacturing standard to +/- 0.05mm on most component alignments make this new generation of Markaudio transducers stand out from the crowd.

RE7.2 Ohm
SD50.270 cm²
VAS4.968 L
CMS1.384m M/N
MMD3.072 m KG
MMS3.277 g
BL3.859 TM
LE124.716 uH
X MAX4.5mm one way

1 review for Alpair 7 MS

  1. Mike

    Really impressed with these. I bought them as a lockdown project mainly to hone my budding carpentry skills and didn’t really have high expectations on the sound quality, given the size and price.

    I’ve built some 11 litre vented boxes for them (slim classic cgr’s) and now they’ve had a chance to warm up I’m amazed at how full and natural they sound. Comparing them to my other speakers (IPL M4’s which are small 5 litre 2 way sealed boxes, but with bigger and much more expensive drivers than these Alpairs), they really hold their own and in many ways they seem to be better, specifically in bass extension and soundstage.

    Particularly pleased with how good they sound with hip-hop/rap music – closely mic’d voices come through really nicely (a couple of my test tracks that often sound muddy – ‘Buggin Out’ and ‘Verses from the Abstract’ by A Tribe Called Quest sound better than I’ve ever heard them). Marvin Gaye’s What’s Going On just sounds incredible from start to finish.

    Overall, a really good purchase and very likely the gateway to more Alpair projects…

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