Like the M-130, the M-165X has a curvilinear shaped treated paper cone, allowing a smooth extension into the higher frequency ranges.
This woofer has incredibly smooth midrange and very good low bass extension. -3db down point in a 1.2 cubic foot ported enclosure is 37.5Hz.
The XBL2 Motor structure lowers low frequency distortion by keeping a linear BL even at high output levels. X-max is significantly increased as well.
It also uses a polymer frame featuring venting beneath the spider plus a vent pole piece.
This driver also works great as a mid-bass woofer in an open baffle design.
The diameter of the driver frame is 7.25" and mounting depth is 2.9375".
RE 5.6 ohms
Xmax 7.8 mm each way
L (1k) .86 mH
L (10k) .36 mH
Ms 11.9 grams
Cms 1.3183 mm/newt
Bl 5.66 Tesla-M
SPL 88.3 db
Area 137.07 sq cm