Lowell JR410-T72 4in Cone Speaker w xfmr

The Lowell JR410-T72 is a high compliance 4-inch cone driver with mounted transformer. Lowell publishes construction of 20-gauge steel, frame of 20-gauge stamped steel, zinc-plated and driver of 4 in. 15W high compliance single cone driver with 10 oz. ceramic magnet, paper cone, treated cloth surround.

Ordered as Lowell part number JR410-T72. Specifications as published by Lowell Manufacturing.

Construction	20-gauge steel
Frame	20-gauge stamped steel, zinc-plated
Driver	4 in. 15W high compliance single cone driver with 10 oz. ceramic magnet, paper cone, treated cloth surround
Transformer	25V/70V with taps at 0.25, 0.5, 1, 2, 5W
Assembly Frequency Response	67Hz-16kHz (±6dB) and 57Hz-20kHz (±7.4dB)
Assembly Average Sensitivity	90.8dB
Assembly Dispersion Angle	170 degrees conical
Assembly Mounting Depth	3.56 in