Alpair 7P Gen.1 !Extended Full Range Audio Driver!

!The Alpair 7P is a audiophile grade paper and glass strand re-enforced coned driver. Along with its sisters drivers, 6P,10P and 12P, the Alpair 7P is designed for the Serious music listener. The 7P’s relatively flat-wide response is designed to deliver a neutral sound. The high range lift response is moved to begin its elevation above 17kHz. !!Particular attention is paid to the stability of the light-thin cone with bonding re-enforcement being deployed on the inner contour of its profile. The 7P’s moving mass is a light-weight 3grams, yet it retains a long throw operation @ 4mm (1 way limited by Arrestor). !!An all-new computer controlled assembly bonding process is deployed on this driver, delivering ultra tight tolerances in critical parts of the 7P’s power-train assembly. !!The 7P can be used as a single-point source driver in purist Full-Range applications, or to partner with the Alpair 12PW, a bass-wide version of the Alpair 12P. The marriage between 7P and 12PW promises much in the way of deep rich bass and fine mid-high range detail.

©markimage Ltd. Hong Kong. All rights reserved. !www.markaudio.com

©markimage Ltd. Hong Kong. All rights reserved. !www.markaudio.com

Revc= 5.400 Ohm

Fo= 73.412 Hz

Sd= 50.270 cm²

Vas= 5.587 Ltr

Cms= 1.557m M/N

Mmd= 2.814m Kg

Mms= 3.019 g

BL= 3.525 TM

Qms= 2.824

Qes= 0.605

Qts= 0.498

Levc= 16.780u H

No= 0.353 %

SPLo= 87.500 dB

Pwr= 20 watt Nom.

Xmax= 4mm 1way

Running In: First 100 hours low volume background mixed music, no heavy bass. Gradually increase to normal operating levels from 100 hours onwards. !!The 7P is a “light duty” driver. Max throw = 4mm (1 way) limited by Arrestor. !!Keep the cone surface away from direct sun-light or any UV source.

©markimage Ltd. Hong Kong. All rights reserved. !www.markaudio.com

5 5/16[135]

2 15/16[75]

4 1/16[103]

Alpair 7.3All Partsdriver dimensionsdrawn by dld | 23-june-2011

11/32[8.5]

3/8[9.9]

2 3/8[60]

5 1/8[130]

2 5/16[58.6]

2 29/32[73.6]

includessuper-gasket

thickness

includessuper-gasket

thickness

4 17/32[115]

Notes:

This driver comes as 3 separate pieces1 /driver2/ second magnet with magnet cover3/ bezel cover

These can be assembled into 4 configurations of the driver. Individual drawings of each possible configuration are on the next sheet

Drivers come with second magnet attached and bezel cover fitted but not glues/

bezel cover

built-in gasket compresses to ~1.5mm with appropriate pressure

use with single magnet or added a 2nd with magnet cover