alpair 7p gen - ritlab.jp
TRANSCRIPT
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