Lowell JR410-T470 Specifications
Lowell Manufacturing Company • 100 Integram Drive • Pacific, Missouri 63069 U.S.A.
Call 800.325.9660, 636.257.3400 • Fax 636.257.6606 • Click www.lowellmfg.com
Lowell makes every effort to provide accurate information and reserves the right to change specifications and/or improve manufacturing methods.
Download and print this spec from www.lowellmfg.com to insure that you have the most current information
2d-203
pg 1 of 4
Printed in U.S.A. © 9-02-08
JR410
15-Watt 4" High Compliance Driver with 10oz. Magnet
Quality Features
Industry standard 15W 4" (EIA 5") speaker provides
clear and accurate reproduction of music and voice
communications.
Engineered for wide response and wide dispersion to
provide even coverage with fewer drivers.
Available with a factory-wired transformer for fast
installation using color-coded leads.
Compatible with Lowell's extensive selection of 4"
architectural grilles, backboxes, and surface baffles
(see page 4).
Description
Lowell high compliance Model JR410 is a commercial industry standard 4" (EIA 5") speaker. Model JR410 features a
10oz magnet for high power handling and sensitivity. It also
includes a 1" copper voice coil, plated steel basket, and high
compliance treated cloth surround. It is specifically engineered to provide wide frequency response and wide dispersion for solid performance in both paging and background
music systems. The driver's small size and broad
beamwidth of 170 degrees make it especially useful in
rooms with low ceilings. For versatile application, the speaker is available with a selection of factory wired 70V or dual
voltage 70/25V transformers and will fit all standard 4"
ceiling grilles and backboxes.
Lowell Model JR410 provides wide and even coverage for
paging and background music with the advantage of using
smaller and fewer speakers. It is often specified for reliable
performance in commercial, industrial, and institutional applications including offices, public buildings, airport corridors,
educational and medical facilities.
The loudspeaker frame is stamped 20 gauge steel with a
zinc plated finish to prevent corrosion. Models with factorywired transformer feature the transformer mounted directly to
the top of the magnet. See speaker/transformer assemblies
on page 2.
Model JR410 is manufactured in the United States of America and meets or
exceeds all applicable EIA standards. Lowell also manufactures a complete
selection of architectural ceiling grilles, acoustic, protective, and special application
backboxes and baffles to facilitate speaker installation wherever
audio communications are desired.
JR410
15-Watt 4" High Compliance Driver with 10oz. Magnet
Lowell Manufacturing Company • 100 Integram Drive • Pacific, Missouri 63069 U.S.A.
Call 800.325.9660, 636.257.3400 • Fax 636.257.6606 • Click www.lowellmfg.com
Lowell makes every effort to provide accurate information and reserves the right to change specifications and/or improve manufacturing methods.
Download and print this spec from www.lowellmfg.com to insure that you have the most current information
2d-203
pg 2 of 4
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Specifications: Lowell Model JR410 High Compliance Driver
PERFORMANCE
Power Handling 15 watts RMS (nominal) measured per EIA Standard RS-426B
Sensitivity 97dB SPL (peak), 91dB SPL (avg) measured 2.83V @ 1m
Impedance 8 ohms (nominal), 8.4 ohms @480Hz (minimum)
Frequency Response 100Hz-16kHz (nominal), 100Hz-14kHz (+
6dB)
Dispersion Angle 170° @ 2000Hz octave (-6dB)
PHYSICAL - WOOFER
Magnet Weight, Material 10oz. (264g), strontium ferrite ceramic
Voice Coil Diameter, Material 1 inch (26mm), copper wire
Cone Material Paper with treated cloth surround
Terminals Quick disconnect type - spade lugs
MECHANICAL
Basket 20 gauge stamped steel with zinc plating
Outside Diameter 5.03 inch (128mm)
Mounting Bolt Circle 4.72 inch (120mm) with 4 round holes equally spaced at 90 degrees.
Cutout Diameter 4.125 inch (105mm)
Mounting Depth 2.08 inch (53mm)
Net Weight 1.7 lbs. (0.76kg)
THIELE-SMALL PARAMETERS
Pe....................15W Qts ......................0.59 BL ..........................4.7Tm Sd ....................10.2 in
2
, 65.8cm
2
Fs....................109Hz Qes ....................0.69 Efficiency, η ..........0.8% Mms ................3.1g
Xmax ..............0.04 in., 1mm Qms ....................3.9 Vas ..........................4.2 liters, 255 cu.in. Cms..................0.68mm/N
Re ..................7.2Ω
JR410 Factory-Wired Loudspeaker / Transformer Assemblies
Assembly Mounted ‘A’ Assembly Xfmr Xfmr Xfmr Xfmr Xfmr
Model Xfmr Assembly Depth* Weight Power Rating Primary Voltage Primary Taps Response Insertion Loss
JR410-T72 TLM572 3.52" 2.1 lb 5 Watts 70/25V 0.25, 0.5, 1, 2, 5W 40Hz - 20kHz +1dB < 0.5dB
JR410-T470 TLM470 3.71" 2.4 lb 4 Watts 70V 0.5, 1, 2, 4W 60Hz - 15kHz +1dB 0.8dB
JR410-T870 TLM870 4.45" 2.8 lb 8 Watts 70V 1, 2, 4, 8W 50Hz - 15kHz +1dB 0.8dB
* Minimum depth required for the speaker transformer assembly to be rear mounted in an enclosure.
Drivers
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