Spec No. 1710
Model No.
[REV. 02.23.16] Page 1/2
us steel
WB86-6A40-T870
Speaker Assembly
• Includes 6.5” driver, transformer, grille
This speaker assembly features a 6.5” 40W coaxial driver that’s engineered as
a step up in sound quality and performance over most standard commercial
coaxial drivers, for very high quality music and paging.
Construction & Features
• 40W coaxial 6.5 inch driver (Model No. 6A40) has a wide angle of sound dis-
tribution (120 degrees conical) over a large area with uniform response and
clear audibility ensures complete coverage with minimum units. Features 10
oz. magnet coupled with 1 in. copper voice coil driving a polypropylene cone
with half-roll rubber surround for long cone travel and good edge damping.
Post-mounted tweeter is a 1in. balanced drive dome protected by Ferrofluid
and a first order high-pass filter. Stamped 20 gauge steel frame with black
enamel paint finish and zinc-plated backplate. Meets or exceeds all applicable E.I.A. standards.
• Factory-wired transformer (Model No. TLM-870) has tap selections at 1, 2,
4, 8W (70V) and includes a bracket mounted to top of magnet for secure
support.
• The grille (Model No. WB-8-6) is precision formed from a single piece of
22-gauge steel with a perforated center and contoured edge. It features
8-32 x 1” welded studs with nuts for concealed mounting of an E.I.A.
6.5” speaker. It is equipped with four white 8-32 x 1-1/2” Phillips-head
screws for attaching the speaker-grille assembly to the backbox or mounting
ring (order separately). Finished in white powder epoxy.
A&E Specifications
The driver shall be Lowell Model No. _______ (6A40-T870) which shall be of the coaxial type having electrically independent high and low frequency transducers. The
low frequency section shall have a 6.5 inch diameter polypropylene cone and the high frequency section shall have a tweeter with a 1” balanced-drive dome. A built-in
electrical crossover network shall be employed to accomplish the proper frequency division between the two drivers. The crossover frequency shall be at 4000Hz with
a first order high-pass filter. The driver shall be capable of producing a uniform audible frequency response over the range of 40Hz-20kHz+6dB with a dispersion angle
of 120 degrees conical @2000Hz-6dB. The average sensitivity shall measure 85dB (SPL at 1W/1M). Rated power handling shall be 40 watts RMS. The low frequency
voice coil shall have a diameter of 1 inch and shall operate in a magnetic field derived from a ferrite (ceramic) magnet having a nominal weight of 10 oz. The high
frequency voice coil shall have a diameter of 0.53 inches and operate in a magnetic field derived from a ferrite (ceramic) magnet having a nominal weight of 2 oz. The
voice coil impedance shall be 8 ohms. The driver shall have a round, structurally reinforced stamped 20 ga. steel frame to maintain precise mechanical alignment and
shall provide facilities for mounting a transformer. The driver shall have an overall diameter of 6.5 in. with eight obround holes equally spaced at 45 degrees on a 6.13
in. diameter mounting bolt circle. The mounting depth shall not exceed 3 in. (not including optional transformer). External metal parts shall be finished in black enamel
paint or zinc plating to resist rust and corrosion. The driver shall be equipped with a transformer, factory mounted and wired. The transformer’s primary voltage shall
be 70.7V and shall provide selectable power taps of 1, 2, 4, 8 watts. Transformer frequency response shall be 50Hz –15kHz+1dB, with maximum insertion loss of 0.8
dB. The driver/transformer shall be screw-mounted to a perforated steel grille with 12.875” dia. and white powder epoxy finish.
[ The companion backbox or mounting ring shall be Lowell Model No. ______. Companion tile bridge or channel rails for suspended installation shall be Lowell Model
No. ____. ]
Lowell makes every effort to provide accurate information while reserving the right to change specifications and/or improve manufacturing methods without notification.
©2016 Lowell Manufacturing Company, 100 Integram Dr., Pacific MO 63069 | 800.325.9660 | www.lowellmfg.com
Spec No. 1710
[REV. 02.23.16] Page 2/2
Driver + Transformer Specifications
Driver Driver
Driver
Ceramic
Driver
No.
Power Rating
Type
Magnet
Dispersion
6A40
40W
Coaxial
10 oz.
120 degrees @
2000Hz (-6dB)
Driver
Sensitivity
1W / 1M
85dB
Driver
Max SPL
Transformer
40W / 1M
Frequency Response
101dB
50Hz–15kHz (±1dB) Driver +
Transformer
Depth
5.38” Driver +
Transformer
Weight
3.15 lbs
Additional technical information is available on the specification sheet for Driver No.6A40
Technical Drawing:
Driver with factory wired
transformer features a steel
bracket mounted to the top of the
backplate to securely support the
weight of the transformer.
0.3” x 0.195” obround holes
Fits grilles with mounting bolt circle of 7.625” - 7.688”
11.25”
0.25”
0.25”
12.875”
6.50”
6.125”
3.00”
6.13”
(mounting bolt circle)
5.38”
Mounting studs
for 6.5” speaker
Compatible Components (Order Separately)
Choose one backbox or mounting ring, plus tile bridge or rails if required for suspended ceiling.
Backbox
Model CP87
CP810
DX108
RF871
XCP87
XCP810
Size
11.938”Dia. x 6.687”D
11.938”Dia. x 10.063”D
15”Dia x 10.125”D 10.063”Dia. x 6.688”D
10.063”Dia. x 6.687”D
10.063”Dia. x 10.063”D
Features
Extended lip for sheetrock + batting
Extended lip for sheetrock + batting
1 cu.ft., Extended lip + batting
Retrofit w tension brkt.
Flat flange for tile ceiling + batting
Flat flange for tile ceiling + batting
Size
13.25” Dia with ears
13.813” Dia.
Features
Extended lip for sheetrock plus mounting ears for 16” & 24” studs, steel
Plastic - use for retrofit
Size
23.75”L
23.75”L
23.75”L
Features
Requires noted backbox
8.5”SQ opening with screw or Twist n’ Lock backbox mounting
10.75”Dia opening with screw backbox mounting
Mounting Ring
Model PR8-1624
RMP8
Tile Bridge
Model LBS8-CP
LBS8
LBS8-R1
Channel Rails
Model SS-24
SS-30
SS-48
Size
23.75”L
30”L
47.75”L
Lowell makes every effort to provide accurate information while reserving the right to change specifications and/or improve manufacturing methods without notification.
©2016 Lowell Manufacturing Company, 100 Integram Dr., Pacific MO 63069 | 800.325.9660 | www.lowellmfg.com