Bogen A2 Operation Manual

www.bogen.com

SPECIFICATIONS

54-2033-02G 1503

MODEL NUMBER A2 / A2T A6 / A6T A8 / A8T

LF Driver 6" MDT 6" MDT 8" MDT

HF Driver

1/2" Polycarbonate 1-1/8" Titanium 1-1/8" Titanium

Freq. Response (-10 dB)

58 Hz to 17 kHz 55 Hz to 17 kHz 45 Hz to 17 kHz

Impedance 8 ohm / 70V 8 ohm / 70V 8 ohm / 70V

Power Handling

(8-ohm/70V)

100W / 16W

150W / 32W 175W / 64W

Sensitivity (1M/1 W, 8-ohm) 88 dBspl 89 dBspl 91 dBspl

Additional Taps (70V) 8W, 4W (A2T)

16W, 8W (A6T)

32W, 16W (A8T)

Dispersion Angles

Horiz. 80°

Vert. 80°

Horiz. 110°

Vert. 45° (up), 35° (down)

Horiz. 100°

Vert. 35° (up), 45° (down)

Speaker Dimensions

9" W x 8" dia. x 8 1/4" D 13 7/8" W x 7 1/8" H x 7 3/4" D 17 7/8" W x 10 1/4" H x 10" D

Shipping Weight

10 lb. / 12 lb. 14 lb. / 15 lb. 21 lb. / 24 lb.

Terminations Gold Plated, Rust Proof Barrier Strip

Cabinet Color Black or White

Half-Space Response

All Dimensions are with Knobs & Brackets attached

MODELS

A2, A6, A8, & VARIATIONS

A-SERIES ENVIRONMENT-PROOF

INDOOR/OUTDOOR LOUDSPEAKERS

MOUNTING THE SPEAKER ON THE YOKE

The speakerʼs yoke allows the speaker to be slipped onto it with the locking knobs attached. First, both knobs need to be removed and the supplied rubber friction disks applied to the speaker enclosure where the knobs clamp. Do not apply the friction disks directly to the mounting knobs. Next, screw the knobs back onto the enclosure about two turns and simply slide the knob shafts down the slots in the yoke. Now tighten the knobs making sure that the shoulder of the knob seats properly through the large hole at the end of the yoke.

SOME FACTORS TO CONSIDER

Distance is not the only factor affecting sound intensity. Also consider what adjacent surfaces may affect the sound (including but not limited to buildings, walls, and overhangs). These structures may provide positive effects (low frequency reinforcement) or negative effects (high-frequency reflections that will degrade intelligibility).

TOP-DOWN

VIEW

The Bogen A-Series Loudpeakers are warranted to be free from defects in material or workmanship for five (5) years from the date of sale to the original purchaser. This warranty does not extend to any of our products that have been subjected to abuse, misuse, improper storage, neglect, accident, improper installation or have been modified or repaired or altered in any manner whatsoever, or where the serial number or date code has been removed or defaced. Other exclusions apply.

LIMITED WARRANTY; EXCLUSION OF CERTAIN DAMAGES

WARNING: Mounting brackets must be secured in accordance with local codes. If in doubt, consult

a professional contractor to determine the integrity of the structure to which the bracket will be attached. When required, a user-supplied safety strap can be secured to the back of the speaker cabinet using the threaded brass insert and the forged steel safety bolt (included).

MULTIPLE SPEAKERS AND SOUND COVERAGE

Placement is critical when the goal is smooth, even sound coverage of an area. Horizontal and vertical dispersion usually vary with 2-way speakers, so installation orientation should be consistent. Models A6 and A8 deliver about 110 and 100 degrees of horizontal sound coverage, respectively, while the coaxial A2 provides about 80 degrees. Too great a distance between any 2 speakers will create a dead spot in the coverage. When in doubt, use more speakers to ensure adequate coverage.

OTHER FACTORS TO CONSIDER

Distance is not the only factor affecting sound intensity. Others that should be considered in the planning phase are adjacent surface reinforcement and environmental effects such as temperature extremes and humidity (mainly in outdoor installations).

LOW FREQUENCY OUTPUT

Bass output level depends on a speakerʼs location. The more reflecting surfaces in proximity to the speakers (walls, ceilings, floors), the greater the bass output. Therefore, speakers mounted in free space (e.g., hanging from an overhead support) will produce comparatively less bass output.

UNDERPOWERING VS. OVERPOWERING

Most speaker damage is caused by amplifiers with too little power. An overdriven amp sends clipping distortion to the speakers. Clipping is usually audible; it may vary from a harsh sound to a fuzzy or blurry sound. If you hear clipping at loud volume levels, turn down the volume until the distortion is no longer present. Damage caused by operating the speakers at distorted volume levels is not covered by the warranty.

PAINTING

The speaker cabinet and grille can be painted with a thin coat of spray paint. Remove the grille and mask the speaker assembly so that only the cabinet gets painted. Then, if desired, spray the grille lightly to avoid plugging the holes.

MAINTENANCE

None required. Speaker cabinets can be wiped clean with a soft, damp cloth.

NOTE: The total number of speakers multiplied by the tap value cannot exceed the output power (in watts) of the 70V amplifier. The above example shows 5 speakers. Using the 16W taps, you need an amplifier with at least (5) x (16) = 80W. A good rule of thumb is to select an amplifier with 20% greater power; in this case, an amplifier that delivers about 100W.

Observe correct polarity for maximum bass performance.

BACK PANEL OF 70V MODELS

EXAMPLE OF 70V SYSTEM CONFIGURATION

EXAMPLE OF 8Ω SYSTEM CONFIGURATION

BACK-PANEL CONNECTIONS

BRACKET INSTALLATION

BACK PANEL OF 8Ω MODELS

A-SERIES ENVIRONMENT-PROOF INDOOR/OUTDOOR LOUDSPEAKERS