Toa PC-671R, PC-671RV Specification Sheet

TOA PC SERIES

FLUSH MOUNT

SPEAKER ASSEMBLIES

PC-671R

FEATURES

l 8" loudspeaker assembly with integral 25V/70V transformer and round baffle.
l Only 2.5" depth allows mounting in partitions and other shallow spaces.
l Multi-tap transformer with heavy duty silicon steel core to prevent saturation at maximum power.

l Available with a rugged baffle mounted volume control. [PC-671RV]

l Contaminant and corrosion resistant baffle and volume control.

PC-671RV

DESCRIPTION

Both models in this PC Series are completely factory assembled
utilizing an eight inch (15 watt program) driver specifically designed
for low level (0.5 to 6 watt) distributed sound systems. This driver in
conjunction with its associated baffle (grille) will provide uniform
dispersion characteristics over a broad frequency range.

The dual (25 and 70 volt) line transformer has a high saturation
factor due to its heavy duty silicon steel core. In usual applications
of 0.5 to 2.0 watts or in extreme 6 watt situations, frequency
response characteristics will not be impaired by saturation. The dual
voltage feature allows the convenience of one model for all line
voltage applications.

The ‘V’ suffix model has a center baffle mounted, screw driver
adjustable Volume Control. TOA design engineers devised this
control to withstand heat, fumes and contaminants that are
associated with ceiling mount installations. This durable,
conservatively designed volume control will provide a long, noise
free service life. The control shaft is provided without a knob to
prevent unauthorized tampering. Its slotted end allows the
technician to quickly balance system levels without high labor costs.

Both PC models have a nominal 2½ inch (behind the grille) depth
which will allow mounting in most partitions, walls and other
shallow spaces. Mounting holes conform to most standard back
boxes. Assembly components are not separately available.

PC-671 ASSEMBLIES
The PC-671 group consists of two models. The baffles

are CRS with a white paint finish specially formulated
to resist corrosion and provide excellent undercoat
bonding.

Specifications

Driver Size, lmpedance
Power Handling
Magnet Material, Weight Ferrite, 5.3 oz.
Flux Density
Frequency Range
Sensitivity
Transformer
Transformer Power Taos
Insertion loss
Volume Control Contaminant Resistant, Screwdriver adjust
Nominal Assembly Depth
Size/Diameter
Assembly Weight

Specifications are subject to change without notice

Nominal 8", 8Ω
15 Watts Program

10,300 Gauss
90 Hz-16k Hz
96dB
Dual Secondary winding, 25 or 70V

0.5W, 1.0W, 2.0W, 3W and 6W
<1.5dB

2.5" Behind Baffle
Round: 13.4" O.D.

3.5 Ibs

ARCHITECT’S AND ENGINEER’S SPECIFICATIONS
The ceiling/wall mount loudspeaker shall be an integrated cone

driver, line transformer and baffle (grille) assembly. The driver shall
be an 8" diameter cone type with an 8 Ohm nominal impedance
and a 5.3 oz ferrite magnet. Power handling shall be 6 watts RMS
(15 watts program) with a frequency response from 90HZ - 16KHZ
and sensitivity of 96 dB SPL at 1 watt input measured at a distance
of 1 meter. The line transformer shall accept 25V and 70V inputs
with taps for 0.5W, 1W, 2W, 3W and 6W with an output
impedance of 8 Ohms with less than a 1.5 dB insertion loss. The
baffle shall be made of CRS with a white, corrosion resistant paint

finish. [A screwdriver adjustable, noise free volume control shall
be mounted in the center of the baffle easily accessible for
adjustment when the assembly is installed. The volume control
shall withstand heat, fumes and other airborne contaminants].

The baffle shall be 13.4" O.D. with a 2.5" depth for the assembly
behind the baffle. Holes shall be provided in the baffle for
mounting to standard loudspeaker backboxes. Weight for the
assembly shall be 3.5 lb. The ceiling/wall mount loudspeaker shall
be the TOA PC-671R [PC-671RV].

TOA Electronics, Inc., 601 Gateway Boulevard
South San Francisco, California 94080

Telephone: [phone]

FAX: [phone]

Printed in U.S.A. 10-94-C