Lowell 810-T870 Specifications

Heard Everywhere Since 1947

Model No.

810-T870

8" Dual Cone Driver & 70V Transformer

Dual cone driver with mounted 70V transformer provides solid per­formance for basic paging and background music.

Features

• 8" dual cone driver with 10 oz. ceramic magnet , 3/4" hard fiber
whizzer cone, 1" voice coil, and 20-ga. steel frame with zinc­plated finish

• Power rating 15W

• Mounted and wired 70V transformer (No. TLM-870) has primary
taps at 1, 2, 4, and 8W

• Meets or exceeds all applicable EIA standards

pec No. 1443 | Rev. 04.22.15 | pg. 1/1

S

with domestic and

global components.

A&E Specifications

The dual cone 8-inch speaker shall be Lowell Model No. 810-T870
which shall be of the permanent magnet type having a seamless
molded fiber cone with a hard fiber whizzer cone mechanically
coupled to a voice coil for extended high frequency response.
Power rating shall be 15 watts RMS. The voice coil shall have a
1-in. dia. and shall operate in a magnetic field derived from a
strontium ferrite (ceramic) magnet having a nominal weight of 10
oz. Voice coil impedance shall be 8ohms. The driver shall have a
round, structurally reinforced stamped 20-ga. steel frame with

8.062" overall diameter and eight obround holes equally spaced at

45 degrees on a 7.625" dia. mounting bolt circle. Overall depth
shall not exceed 3.0" for the assembly. External metal parts shall
be zinc-plated to resist rust and corrosion. The mounted trans­former shall be 70V with selectable taps at 1, 2, 4, and 8W. The
assembly shall be capable of producing a uniform audible fre­quency response over the range of 50Hz-11.6kHz (+
20kHz (+
@2000Hz-6dB. Average sensitivity shall measure 97.9dB (SPL at
1W/1M).

6.4dB) with dispersion angle of 95 degrees conical

6dB), 50Hz-

Driver + Transformer Specifications

Driver + Xfmr. Driver Driver Driver Transformer Assembly Assembly Dispersion Assembly Assembly Max
No's. Type Power Rating Magnet Wt. Taps Frequency Response @2000Hz Octave (-6dB) Sensitivity Mtg. Depth SPL

810 + TLM-870 Dual cone 15W 10 oz. 1, 2, 4, 8W 50Hz-11.6kHz (+6dB) 95 degrees 97.9dB 3.0" 106.9 **

* Minimum depth required for assembly to be rear-mounted to grille in an enclosure.
** Calculated based on 8W maximum transformer power tap and measured sensitivity.
Additional information available on specification sheet for Driver No. 810.

8ohm @70V 50Hz-20kHz (+6.4dB) conical Avg SPL

Lowell makes every effort to provide accurate information while reserving the right to change specifications and/or improve manufacturing methods without notification.
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