The Celestion FTR15-4080HDX 15" woofer is an extreme-duty woofer intended for the most demanding pro audio applications. It features a 1" long by 4" diameter copper wire Inside/Outside voice coil; by winding the layers on both sides of the fiberglass former, greater stability under thermal stress is achieved. The die cast aluminum chassis supports a massive, high-BL 110 oz. ceramic ferrite motor structure, and the dual spider design and multi-roll cone termination ensure maximum control.
Thiele-Small Parameters
Resonant Frequency (Fs) 40Hz
Voice Coil Inductance (Le) 1.8mH
Mechanical Q (Qms) 3.98
Electromagnetic Q (Qes) 0.36
Total Q (Qts) 0.33
Compliance Equivalent Volume (Vas) 3.68ft³
Mechanical Compliance of Suspension (Cms) 0.1mm/N
BL Product (BL) 23.53T·m
Maximum Linear Excursion (Xmax) 8mm
Materials of Construction
Cone MaterialPaper / Glass Fiber
Surround Material Cloth
Voice Coil Wire Material Copper
Voice Coil Former Fiberglass
Basket / Frame Material Cast Aluminum
Magnet Material Ferrite
Mounting Information
Overall Outside Diameter 15.16"
Baffle Cutout Diameter 13.82"
Depth 7.1"
# Mounting Holes 8
Optimum Cabinet Size (determined using BassBox 6 Pro High Fidelity suggestion)
