Lowell D6410-72 Specifications
Model: D-series
4” Speaker/Xfmr/Grille Assembly: (full fidelity sound, very wide dispersion)
Description
Lowell's D-series speaker assemblies are 4” 15W systems that
provide full fidelity sound with clear intelligibility, very wide dispersion (170
includes a speaker (JR410), wired dual-voltage transformer (TLM-
572) and a mounted grille (several options to choose from). It ships
ready for installation in a variety of applications. Order backbox
and mounting accessories (T-bridge or support rails) separately.
o
) and minimal architectural visiblity. Each assembly
Model No. D1410-72
(screw-mount grille)
Features
• Speaker(JR410): 4” high compliance speaker with power rat-
ing of 15 watts RMS employs a 10 oz. ceramic magnet. Cone is
paper with a treated cloth surround for smooth, extended frequency response and a clean, natural sound.
• Transformer(TLM-572):to facilitate a variety of distributed applications the assembly includes a wired dual-voltage (70/25V)
transformer that has a 5W rating and taps at .25, .5, 1, 2, 5W.
• Grille Selection: precision-formed steel with white powder
epoxy finish for a clean presentation. Three options:
– WB-4: screw-mount, 7.25” diameter
– SG-4: screw-mount, 7” square
– CN-4:torsion spring mount for hardware-free appearance.
7.625” dia.
A&ESpecifications
The 4-inch speaker assembly shall be Lowell Model__________.
It shall include a 4" high-compliance speaker with wired transformer and mounted grille. The speaker shall have a 15 watt RMS
power rating. It shall employ a 10 oz. ceramic magnet and a paper
cone with a treated cloth surround. Frequency response shall be
100Hz -14kHz +
6dB with an average sensitivity of 91dB measured 1W/1M. The transformer shall be a factory-wired 70/25V unit
and shall have primary taps available at 0.25, 0.5, 1, 2 and 5W. The
grille shall be factory-mounted to the speaker and shall be manufactured of steel and finished in white powder epoxy.
Front view
Model No. D3410-72
(torsion grille)
Front view
Model No. D6410-72
(square screw-mount grille)
Front view
Assembly Model No. Speaker I.D. Transformer I.D. Grille I.D. Backbox (order separately) T-bridge or Rails (order separately)
D1410-72 JR410 TLM-572 WB-4 CP4 or DX104 ......................................LBS4-DX (requires backbox)
No backbox ..........................................LSS4-R
D3410-72 JR410 TLM-572 CN-4 DX104T ................................................LBS-DX (requires backbox)
D6410-72 JR410 TLM-572 SG-4 P625X...................................................SS24 (rails)
CB44 (surface-mount) ..........................None required
Spec. No. 2a-105
(rev. 03.18.13)
pg. 1 of 2
©2013 Lowell Manufacturing Company, 100 Integram Dr., Pacific MO 63069. Phone–800.325.9660
Fax—636.257.6606. Lowell makes every effort to provide accurate information while reserving the right to
change specifications and/or improve manufacturing methods without notification. (lowellmfg.com)
DRIVERSPECIFICATIONS
I.D. Rating Type Magnet Response Impedance 1W / 1M (w/o xfmr) (w/o xfmr)
JR410 15W High 10 oz. 100Hz - 14kHz +6dB 170°@ 8 Ohms 91dB Avg. 2.08" 1.7 lbs.
PERFORMANCE
Power Handling 15 watts RMS (nominal) measured per EIA Standard RS-426B
Sensitivity 91dB log average SPL (1W/1M)
Impedance 8 ohms (nominal), 8.4 ohms @480Hz (minimum)
Frequency Response 100Hz-16kHz (nominal), 100Hz-14kHz (+
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-SMALLPARAMETERS
Power Ceramic Frequency Dispersion Voice Coil Sensitivity Depth Weight
Compliance 100Hz - 16kHz Nominal 2000Hz -6dB 97dB Peak
102.8dB maximum SPL (calculated based on power rating and measured sensitivity)
6dB)
Pe....................15W Qts ......................0.59 BL ..........................4.7Tm Sd ....................10.2 in
2
, 65.8cm
Fs....................109Hz Qes ....................0.69 Efficiency,h ..........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 ..................7.2W
2
Spec. No. 2a-105
(rev. 03.18.13)
pg. 2 of 2
©2013 Lowell Manufacturing Company, 100 Integram Dr., Pacific MO 63069. Phone–800.325.9660
Fax—636.257.6606. Lowell makes every effort to provide accurate information while reserving the right to
change specifications and/or improve manufacturing methods without notification. (lowellmfg.com)
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