Lowell JR410-T870

Lowell JR410-T870

Lowell JR410-T870
Item# JR410-T870

Product Description


Speaker Driver #JR410-T870 (4? 15W single cone, xfmr)


High compliance 4-inch single cone driver with mounted 70V transformer provides wide frequency response and wide dispersion for paging and background music.



  • Background music and paging


  • Driver:  4 in. 15W single cone driver with 10 oz. ceramic magnet, paper cone, treated cloth surround.
  • Frame:  20-gauge stamped steel, zinc-plated.
  • Mounting Bolt Circle:  4.69 in.
  • Transformer:   70V with taps at 1, 2, 4, 8W
  • Assembly Frequency Response:  75Hz–15.7kHz (±6dB) and 57Hz–20kHz (±7.4dB)
  • Assembly Mounting Depth:  3.9 in.
  • Assembly Dispersion Angle:  170 degrees conical
  • Assembly Average Sensitivity:  91.4dB


  • Made in U.S.A. with global components
  • Meets or exceeds industry standards


  • The high compliance 4-inch cone driver with mounted transformer shall be Lowell Model No. JR410-T870. The driver shall be of the permanent magnet type with a paper cone, treated cloth surround, and dispersion angle of 170 degrees @ 2000Hz (-6dB). Average sensitivity shall measure 90.8dB (SPL at 1W/1M) and power rating shall be 15 watts RMS. The driver shall feature 1 inch diameter voice coil (8ohm impedance), 10 oz. ceramic magnet, 20-gauge steel frame with 5.03 inch diameter and four holes spaced at 90 degrees on 4.69 in. diameter mounting bolt circle. Assembly frequency response shall be 75Hz–15.7kHz (±6dB) and 57Hz-20kHz (±7.4dB). External metal parts shall be zinc-plated. The mounted transformer shall be 70V with selectable taps at 1, 2 4, 8W. Transformer response shall be 50Hz–15kHz (+1dB) with insertion loss of 0.8dB. The driver-transformer assembly shall have an overall depth of 3.9 in.

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