A8 Series-Data Shee

Technical
Specifications
The loudspeaker shall be a Bogen Model A8 (8-ohm) or
Model A8T (70V) with a power handling capacity of 175W
(8-ohm) or 64W (70V), or approved equivalent, consisting
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 density (30% or greater) mineral-
filled polypropylene material compounded with UV
inhibitors.
Two molded-in colors shall be made available (Black and
White). 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 meet or 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 17-7/8" W x
10-1/4" H x 10" D (with bracket). Product weight shall not
exceed 18 lb. (A8), or 20 lb. (A8T).
Architect & Engineer
Specifications
MODEL NUMBER A8 A8T
Frequency Response (-10 dB)* 45 Hz to 17 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 17-7/8" W x 10-1/4" H x 10" D (with bracket)
Terminations Gold-Plated, Rust-Proof Barrier Strip
Environmental Designed to meet or exceed Mil-Std-810E
Included Accessories Color-Matched Stainless Steel Mounting Bracket
Cabinet Color Black or White
* Half-Space Responses