Bogen A8T A8TGRN User Manual

Product codes
A8TGRN
Page of 4
Technical
Specifications
The loudspeaker shall be a NEAR Model A8 (8-ohm) or
Model A8T (70V) with a power handling capacity of 175W
(8-ohm) or 64W (70V) or approved equivalent. The loud-
speaker shall consist of one 8-inch nominal low frequency
transducer and one 1-1/8-inch nominal titanium high
frequency transducer with a filter network for dividing
frequencies between the transducers.  A weather-tight
enclosure shall house all components. The enclosure
shall be constructed from an injection-molded, high densi-
ty (30% or greater) mineral-filled polypropylene material
compounded with UV inhibitors.
Three molded-in colors shall be made available (Black,
White, and Green). Perforated speaker grilles shall be
made from heavy-gauge PVC, color-matched to the
enclosure. 
The low frequency driver shall utilize a metal-alloy cone
with deep-anodized surface treatment for rigidity and
corrosion resistance. The cone shall provide a heat trans-
fer element for the voice coil under high-power input.
Compounded rubber cone surrounds shall be formulated
to withstand all-environment installations, including salt
spray, ultraviolet light (UV), heat, cold, and constant
humidity. The voice coil will be centered via a high gauss,
low viscosity magnetic fluid (ferrofluid), which increases
the heat transfer rate from the voice coil under long-term
high-power use. The magnetic fluid shall prevent corro-
sion from occurring in the magnet gap.
The high frequency driver shall utilize an environmentally
stable titanium diaphragm. Ferrofluid shall dampen the
voice coil and assist in the heat transfer for higher power
capability.
Environmental testing shall ensure long-term operation in
all weather. Specifications shall exceed Mil-Std-810E Test
Methods for Temperature, Humidity, Ultraviolet Light, and
Salt Spray.
The mounting bracket shall be designed with multiple
angles to facilitate installation in corners or when angula-
tion is required. An integral safety strap mounting point
shall be included. The loudspeaker shall rotate about its
axis a minimum of 180
o
. The bracket shall be formed from
heavy-gauge stainless steel (minimum 3mm thick), and
finished with a scratch-resistant paint (color-matched to
the enclosure).
The input connectors for 8-ohm and 70-volt systems shall
be gold-plated screws with integral clamping washers.
Dimensions of each speaker shall not exceed 10-1/4" H x
17-7/8" W x 10" D (with bracket).  Product weight shall not
exceed 18 lb. (A8), and 20 lb. (A8T).
Architect & Engineer
Specifications
MODEL NUMBER
A8
A8T
Frequency Response (-10 dB)*
45 Hz to 20 kHz
LF Driver
8" MDT Metal-Alloy Cone
HF Driver
1-1/8" Titanium
Sensitivity (1W/1m, 8-ohm)
91 dBspl
Impedance
8-ohm
70V
Power Handling
175W
64W
Additional Taps
-
32W, 16W
Product Weight
18 lb.
20 lb.
Cabinet Material
Mineral-Filled Polypropylene, UV-inhibited
Speaker Dimensions
10-1/4" H x 17-7/8" W x 10" D (with bracket)
Terminations
Gold-Plated, Rust-Proof Barrier Strip
Environmental
Meets or exceeds Mil-Std-810E
Included Accessories
Color-Matched Aluminum Mounting Bracket
Cabinet Color
Black, Green, or White
*
Half-Space Response