MarkAudio Alpair 12P 8" Paper Cone Full Range

Price: $157.00


Manufacturer: Markaudio
Product ID : alpair12p
Weight: 7.00 lbs
Manufacturer: Markaudio
E-mail to a friend


Markaudio Alpair 12P Full Range 8" Paper Cone

High Efficiency Paper Cone - Generation 2 Audio Driver

Link to MarkAudio PDF Enclosure Plans

The Alpair 12P is the largest full-range driver produced by Markaudio. This driver is a development unit following on from the original metal coned Alpair 12 produced in 2009/2010. Several major design changes make this Alpair radically different from the original in terms of its operation and performance.

Markaudio Alpair series drivers are completely custom designed and built. All components (apart from the magnet) are individually designed and engineered with their own tooling and mould making sets. Alpair drivers are made by highly skilled engineers; they are not “mass produced”.

Key Features
The change to a custom paper cone with a more shallow profile reduces mass and increases dispersion performance. The new cone is only 21-mm deep compared to the metal unit at 26- mm. The 12P employs a new custom CCAW coil with an aluminum/paper wrap, vented, low mass thin-walled body. The spider is particularly special. Designed by Matsubara San, it employs a new long throw profile set together with a ribbed body to maintain linearity. The front suspension remains the same as the previous model; designed by Lu Yi Ping, its ultra thin wall doesn't support the cone. In terms of mechanical load performance, the 12P remains a single semi-free to air driver, possibly a unique design in its class (see description and picture below).

The 12P remains pure to designer Mark Fenlon's current criterion which is to make purist, single cone drivers that are full-range capable without the use of phase plugs, co-axial centre tweeters or whizzers. The 12P is 92dB efficient (1w/m2), operating to 22-kHz (-3dB) and having a resonance frequency of 42Hz (+/- 2Hz). The 12Pʼs power-train (cone, cap, coil and suspensions) is mechanically efficient and linear, requiring only modest powered amps to make it perform well. This driver is aimed strictly at the “audiophile” end of the market. Its cone is highly-resonance sensitive so clean low-distortion amplification and source components are advised.

For those listeners who value absolute detail, dynamics and clarity, the Alpair 12P is an excellent candidate. I'd like to thank all those who assisted in the design and development process, especially existing Markaudio driver users, whose feedback was instrumental in the 12Pʼs final incarnation.

Alpair 12.2P Small Reflex Enclosure Plans (PDF)

Alpair 12.2P Pensil & Super Pensil Enclosure Plans (PDF)

Follow this link to Alpair 12P discussion at

The recommended Max usable excursion = 5.4mm (non linear bass load) and Max power handling = 30 Watts (Nom).

Running in: Carefully run the drivers at low volume using light music (NO artificial signal generation of any-kind) for the first 100 hours. After this period, gradually increase to normal listening volumes with the introduction of music that contains some bass. The driver will reach optimal performance at around 800 hours of play time.

Take great care not to touch the cones, or use any cleaning agents on their surface. Keep the drivers away from strong light as the UV may damage the cone's structure.

Comment on Facebook

Product Reviews

Login or Register to write a review.
Reviewed by Slapshot
01/31/2015 - 06:15:01 PM
Pleasant surprise
I'm using these on an open baffle; actively crossed to an H Frame subwoofer.
These are smooth detailed transducers. Very revealing- an @2000 hertz whining sound was coming out of them, unnoticed previously in my Neo10/ Neo3 pairing.
The Altairs 12P ought to be considered to be bargain priced.
These play as loud and well as I wish, running with a 300B SET, equally well with a single end wired 6CA7, even with a home made EL84 SET (my first try at amp building .
It plays well with a first generation NAIT 5, Flatcapped, and easily reveals differences between CD players and a NOS DAC, so choose your sources wisely.
Vinyl is fantastic, even with my modest rig.
Having made and sold 5 or six dozen speakers the last few years , as a hobby, I can hardly recommend this driver highly enough.
Very very easy to attain great results.