Alpair 11 MS

110mm   Fullrange drive unit
7.2ohm    Ferrite magnet

  • State of the art full range drive unit with Mono Suspension and Negative Camber technologies
  • 6in  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

The advanced design Alpair 11MS (mono suspension) is a radical departure from previous models. The 11MS 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 11MS 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 repositioning 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 11MS 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-on connectors or light-soldering for cables up to 1.5mm diameter.

Other features. The run-in time for the 11MS 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 MS11 is a bass capable audio driver with comparable performance to light-medium load traditional mid bass units. The11MS 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.

COLOURGold, Grey
RE7.2 Ohm
SD111.22 cm²
VAS17.709 L
CMS0.008 M/N
MMD11.331m KG
MMS12.005 g
BL7.812 TM
LE63.087 uH
X MAX8mm one way

3 reviews for Alpair 11 MS

  1. Michel Valbonesi


    I am Michel from Geneva / Switzerland. I am 60 years old, and I have done many DIY speakers.
    Congratulations to Mark Fenlon and his team !
    This really full-range driver is a gem !
    Well packaged and very well built speaker.
    I use it in a vented box of about 14 liters.
    Too many FR speakers are lacking basses, have too much front faced agressive mediums, and needs tweeters.
    This is not the case with the 11 MS !
    All what you need is there : articulate and consistent basses; present but not fatiguing mediums, and fine trebles.
    As Mark says in its vid., the the 2D (and 3D) soundstage is very nice and precise.
    The sound pressure is remarkable too, for the size of the 11 MS.
    So, for domestic audiophile music listening, these are wonderfull.

    Happy new year 2021, and best regards.
    Michel Valbonesi

  2. Leif Brandt

    My drivers are starting to be recorded now. Are overwhelmed by what they can accomplish.
    I can associate that they sound a bit like mine hornspeakers in the 80’s (3-way). So detailed and seductive without sounding hard in any way.
    I am very happy with these drivers. I really recommend these.
    Mark you are the KING
    I have found home …

  3. Berly

    Excellent driver for music

    Its been 2 years since i started listening to alpair 11ms.
    Its the most free of compromise full range driver i have ever seen given that you follow a few set of rules.

    Use it primarily for music .
    Dont expect it to blast your roof off with hardrock type of genres and hollywood movies with high dynamic range.
    Understand that its not made for sheer volume but instead for exceptional soundstage and accuracy of articulation at moderate volume.

    The bass extension generated from these drivers in a bigger cabinet like pensil or FHXL is unbelievable. But to experience that bass you need to place it properly around 20cm from backwall 30cm from corners facing length wise in a rectangular room.

    Accuracy of fast articulated bass like (my bass-brian bromberg) is exceptional.

    Apart from accuracy the bass is deep and very clean in nature like something from a servo-subwoofer

    Mids are smooth and neutral

    Treble when kept without toe-in sounds a bit less. So I resorted for around 10to 15 degrees toe-in which gave a smooth warm treble (around 3 to 5db below midrange)

    Sound stage is one of the best ive heard from any speaker. Speakers disappear into the background and vocals comes from dead centre.

    If you are using it for movies use dynamic range compression in your system. A typical example where this will save your driver from cone over-excursion is when playing movies from christofer nolan in which dialogue is very low. Due to this people tend to keep volume high to hear the dialogue and then when an action scene hits the speaker cone will just hit over excursion damaging it permanently. So use it with care for movies.

    Overall for the size and cost of the driver i dont think there is any full range driver which does what Alpair 11ms does.

    Its the FR driver with the least compromises with alot of excellence in itself

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