Atlas Sound BIA-100 User Manual

Specifications subject to change without notice

© 2001 Atlas Sound LP Printed in U.S.A. 000501 SL2-1411

149

TWO

1601 JACK MCKAY BLVD. / ENNIS, TEXAS 75119 U.S.A. / TELEPHONE: [phone] / FAX [phone]

BI-AXIAL HORN WITH GIMBAL-MOUNT

BIA-100

FEATURES

• High-Efficiency Bi-Axial Horn Provides 130˚ x 60˚ Wide-Angle
Sound Coverage

• Combine with PD Series Drivers

• Nominal Frequency Response of 350-8,000 Hz for High-Intelligibility
Voice, Signaling and Full-Range Music in Indoor/Outdoor Applications

• Patented 180˚ Gimbal-Mount for Installation Flexibility

• Accepts All Atlas Sound and 1

3

⁄8" - 18 Thread Compression Drivers

with Throat Openings of 0.7" Dia.

APPLICATIONS

Bi-axial horn Model BIA-100 delivers outstanding sound dispersion
and audio efficiency when used with medium or high powered
compression drivers. Unit features exponentially-flared projectors
which eliminate phase cancellation, control low-frequency roll off
and offers maximum results in professionally-applied voice, music
and signaling systems. It can be surface or flange-mounted and is
ideal for use as a mid-range component for two and three-way,
high-fidelity loudspeaker systems. Weather-resistant construction is
suitable for permanent or portable installation in church, recrea­tion/sport centers, mass transit terminals, industrial, commercial,
educational and institutional facilities.

GENERAL DESCRIPTION

Model BIA-100 is the original reflex horn featuring a bi-axial design
with twin air columns and exponential bell for wide-angle coverage
with a linear frequency response. The horn provides excellent
acoustic loading maintained to a 350 Hz low-frequency roll-off and
optimizes delivery of high and mid-range signal levels. BIA-100 is
designed for use with Atlas Sound PD Series compression drivers
and models having 1

3

⁄8

" -18 male threads and 0.707" dia. throat
openings. Refer to PD Series compression driver specification
sheets for high-pass filter requirements. Transformer-equipped
drivers are available (power-tap information is outlined on individual
compression driver specification sheets). The easily-mounted horn
features the labor-saving patented gimbal-mount bracket assembly
(U.S. Patent # 4,325,529) which allows for directional positioning
up to 180˚ vertically and horizontally. It includes a steel bracket,
cast-mounting base and provisions for flange installation. The
weather-resistant, non-glare matte black foam horn is resistant to
resonance. Bracket assembly is finished in durable epoxy. Overall
dimensions are 21"W x 10

1

⁄4"H x 191⁄4"D (533 x 260 x 489 mm).

Weight is 16 lbs.

POWER SOUND LEVEL **DISPERSION IMPEDANCE

MODEL RA TING PEAK *RP / 1 M,1W / 1 M

BIA-100 w/ PD-30 30 125dB 121dB, 107dB, 400-5200 Hz 8 ohm
BIA-100 w/ PD-5VH 40 126dB 121dB, 106dB, 300-6300 Hz 130

˚ x 60˚ 16 ohm

BIA-100 w/ PD-60A 60 128dB 125dB, 108dB, 300-6000 Hz 16 oh m

* Measured at Rated Power, 1 Meter (avg)
**Angle Shown for -6dB, 2 kHz Octave Band

BIA-100

Specifications subject to change without notice

© 2001 Atlas Sound LP Printed in U.S.A. 000501 SL2-1411

1601 JACK MCKAY BLVD. / ENNIS, TEXAS 75119 U.S.A. / TELEPHONE: [phone] / FAX [phone]

ARCHITECT AND ENGINEER SPECIFICATIONS

Horn shall be Atlas Sound __________(Model BIA-100) or approved
equal incorporating a unitized, bi-axial, twin-reflex air-column assem­bly for wide-angle coverage pattern. Low-frequency roll off shall be
350 Hz, air column length 2

3

⁄4' (838mm) and sound-dispersion angle
130˚ in the plane of narrower horn dimension and 60˚ in the wider di­mension. The horn shall accommodate compression driver units with

standard 1

3

⁄8" - 18 thread, and measure 21"W x 101⁄4" H x 191⁄4" D.
The horn bell shall be weatherproof and constructed of non-resonant
molded foam textured in black. Asteel mounting bracket and cast
installation base shall provide adjustable flexibility in sound focusing
up to 180

o

vertically and horizontally. The gimbal-mount shall include

provisions for surface installation, banding and strapping.

Horizontal Polars Are Normalized To Zero On Axis

Harmonic Distortion

Measured with 60-watt driver Model PD-60A

Frequency Response (60 watts at 1 meter)

Measured with 60-watt driver Model PD-60A

Impedance

Measured with 60-watt driver Model PD-60A

1 W

60 W

MODEL BIA-100 with PD60A

Frequency Q Di Beamwidth

Horizontal Vertical

500 4 7 95 165
1000 8 9 75 105
2000 14 11 50 55
4000 25 14 25 35
8000 48 17 25 25

Vertical Polars Are Normalized To Zero On Axis