<style> .wpb_animate_when_almost_visible { opacity: 1; }</style> 4A30-T870 | 4-inch Speaker, 30W Coaxial Driver, 8W Transformer | Lowell Manufacturing Co. | ATR/Treehouse

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Lowell Manufacturing Co. - 4A30-T870
Lowell Manufacturing Co. - 4A30-T870 Lowell Manufacturing Co. - 4A30-T870 Lowell Manufacturing Co. - 4A30-T870
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4-inch Speaker, 30W Coaxial Driver, 8W Transformer

Series: 4A30

Model: 4A30-T870

  • Frame: 20-gauge stamped steel with black enamel finish and zinc-plated back-plate.
  • Mounting Bolt Circle: 4.688 in.
  • Transformer: 70V with taps at 1, 2, 4, 8W
  • Assembly Frequency Response: 70Hz-20kHz (±6dB) and 50Hz-20kHz (±8.8dB)
  • Assembly Mounting Depth: 3.80 in.
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4 in. (EIA 5 in.) 30W coaxial driver delivers a wide angle of sound distribution at 2kHz with uniform response and clear audibility, ensuring complete coverage with minimum units. Includes 10 oz. magnet with 1 in. copper voice coil and polypropylene cone with half-roll rubber surround for long cone travel and good edge damping. Post-mounted liquid-cooled tweeter is a 1-inch diameter balanced drive dome with first order high-pass filter.

  • Frame: 20-gauge stamped steel with black enamel finish and zinc-plated back-plate.
  • Mounting Bolt Circle: 4.688 in.
  • Transformer: 70V with taps at 1, 2, 4, 8W
  • Assembly Frequency Response: 70Hz-20kHz (±6dB) and 50Hz-20kHz (±8.8dB)
  • Assembly Mounting Depth: 3.80 in.
  • Assembly Dispersion Angle: 135 degrees conical
  • Assembly Average Sensitivity: 88.0dB
 
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