Bogen A2/T Spec

A-Series

All-Environment

Loudspeakers

Models A2, A2T

Features

• Indoor and outdoor all-weather speaker with fully-sealed cabinet

• Available versions: 8-ohm and 70V

• Available colors: black and white

• Metal-alloy MDT mid/bass speaker cone delivers natural sound with ultra-low distortion

• Extremely stable, long-lasting MDT cone structure

• High efficiency and power handling for optimum performance

• Dual-layer voice coil with separate inner and outer windings for high output with ultra-low distortion

• MLS fluid voice coil suspension replaces distortion-causing mechanical spider

• Compound rubber surrounds resist UV rays and salt spray

• Gold-plated, rust-proof connectors

• High-density, injection-molded cabinet resists chipping and scratching

• Easy-to-grasp multi-faceted mounting brackets with 180 o swivel

• Easy to grip, oversized mounting knobs

• Brackets mount with knobs attached for easier and safer installation in hard-to-reach locations

• Heavy-gauge aluminum bracket

• Corrosion-resistant driver frame & mounting hardware

• Attractive styling with “Armadillo” ridges for stiffness

• Coaxial speaker system

Description

Bogen’s A-Series "Armadillo" loudspeakers feature unique technologies that improve sound quality and operating reliability.

Attractively styled, they are engineered for both indoor and outdoor applications. The compact A2 models are designed for smaller spaces. Its high audio intelligibility and superb articulation make it ideal for music or paging applications. The A2 model also features

MDT (Metal Diaphragm Technology) and MLS (Magnetic Liquid

Suspension).

MDT (Metal Diaphragm Technology):

• High rigidity and low mass of metal versus traditional papers and plastics

• Extremely stable cone structure over long periods of time

• Fast transmission of sound through the diaphragm means low energy storage

• Special anodizing process creates a ceramic coating for increased stiffness

• Efficient heat-sinking of voice coils under long-term, high-power situations

MLS (Magnetic Liquid Suspension):

• Voice coil is constantly centered for lower distortion

• Voice coil is more efficiently heat-sinked by fluid instead of air

• Greater linearity is accomplished because the mechanical spider is eliminated

• Constant lubrication of the gap prevents oxidation from outdoor use

Specifications subject to change without notice.

© 2014-2015 Bogen Communications, Inc.

54-8008-01E 1505

* Half-Space Responses

Technical

Specifications

MODEL NUMBER

Frequency Response (-10 dB)*

LF Driver

HF Driver

Sensitivity (1W/1m, 8-ohm)

Impedance

Power Handling

Additional Taps

Product Weight

Cabinet Material

Speaker Dimensions

Terminations

Environmental

Included Accessories

Cabinet Color

A2 A2T

58 Hz to 17 kHz

6" MDT Metal-Alloy Cone

1/2" Polycarbonate

88 dBspl

8-ohm 70V

100W

-

8 lb.

16W

8W, 4W

10 lb.

Mineral-Filled Polypropylene, UV-inhibited

9" W x 8" dia. x 8-1/4" D (with knob & bracket)

Gold-Plated, Rust-Proof Barrier Strip

Designed to meet or exceed Mil-Std-810E

Color-Matched Aluminum Mounting Bracket

Black or White

Architect & Engineer

Specifications

The loudspeaker shall be a Bogen Model A2 (8-ohm) or Model A2T (70V) with a power handling capacity of

100W (8-ohm) or 16W (70V), or approved equivalent, loudspeaker consisting of one 6-inch nominal low frequency transducer, one 1/2-inch nominal high frequency transducer mounted coaxially, 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 injectionmolded, 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 transfer 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 corrosion from occurring in the magnet gap.

The high frequency driver shall utilize an environmentally stable polycarbonate 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 any 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 angulation is required. An integral safety strap mounting point shall be included. The loudspeaker shall rotate, on its axis, a minimum of 180 o . The bracket shall be formed from heavy-gauge aluminum (minimum 3mm thick), and finished with a scratch-resistant paint (colormatched 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

9" Wide x 8" Diameter x 8-1/4" Deep (with knob & bracket). Product weight shall not exceed 8 lb. (A2), or

10 lb. (A2T).

Frequency Response

(Half-space @ 1m)

16W

8W

4W

1W/8-ohm

(dBspl)

110

105

100

95

90

85

80

75

50 100 1000 10000 (Hz)

Off-Axis Response

Because the A2 has a co-axial design, all off-axis responses, horizontal & vertical, are the same.

(dB)

+10

0

40 deg

30 deg

20 deg

10 deg

0 deg

-10

-20

50 100

Polar

Response

330

300

0

-6

-12

-18

-24

-30

-36

270

1000

30

60

90 270

300

330

0

-6

-12

-18

-24

-30

-36

10000

30

60

90

500 Hz

1 kHz

2 kHz

240

210

180

150

120

4 kHz

8 kHz

16 kHz

240

210

180

150

120

Mechanical Drawings

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