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The Alpair 12PW is a audiophile grade paper and glass strand re-enforced coned bass-middriver. Along with its Full-Range sisters drivers, 6P,10P and 12P, the Alpair 12PW is designedfor the Serious music listener. The 12PW’s relatively flat response is designed to deliver aneutral sound. The mid-high range gradually falls away above 10kHz.
The development of this driver follows its Full-Range sister unit, the Alpair 12P. Both drivers areSemi-Free-To-Air designs, relying solely on their rear suspensions for mechanical operation. TheAlpair 12PW has a re-enforced rear suspension and a new coil to enable handling of typicalaudiophile low frequency loads (not constant low frequency loads).The 12PW has a long mechanical throw, limited by its Arrestor to 8.5mm (1 way). This driver is alow-mass design, its power-train has a moving mass of 11.7 grams yet delivers a Vas of 45 litreswith a total Q of 0.39, making it ideal for larger scale purist box designs.!An all-new computer controlled bonding process is deployed on this driver, delivering ultra tighttolerances in critical parts of the 12PW’s power-train assembly. !!The 12PW is primarily designed to be partnered with the Alpair 7P yet will also be a excellentpartner for many tweeters. The marriage between 7P and 12PW promises much in the way ofdeep rich bass and fine mid-high range detail.
Revc= 5.400 OhmFo= 38.426 HzSd= 147.411 cmVas= 45.292 LtrCms= 1.468m M/NMmd= 10.658 gMms= 11.687 gBL= 5.308 TMQms= 1.440Qes= 0.541Qts= 0.393Levc= 49.302u HNo= 0.460 %SPLo= 88.641 dBPwr=40 watts Nom.X max= 8.5mm (1 way)
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