399-8B/16B
1.4” Exit High Frequency
Compression Driver
FEATURES - THE ALTEC LANSING DIFFERENCE
• Superior Acoustic Output Level
•
High Performance 40W AES / 160W Peak Power Handling
• Smooth and Transparent
399-8B/16B GENERAL PRODUCT DESCRIPTION
Altec Lansing’s 399-8B and 399-16B compact, high frequency,
compression drivers have been designed for use in high level sound
reinforcement systems where both wide bandwidth and substantial
acoustic output level are essential. When used with Altec Lansing
Mantaray
TM
high frequency horns, the energy produced by these drivers
can be directed to cover an audience accurately and completely. Their
wide range response, when complemented by Altec Lansing low
frequency loudspeaker systems, will provide smooth reproduction of
speech and music for installations in auditoriums, churches, stadiums, and
arenas.
The robust Pascalite diaphragm extends the driver’s power handling
capability, while maintaining superior high frequency bandwidth. The
compact magnetic motor-structure, utilizing a 6.7 lbs. (3.0 kg) ferrite
magnet, provides a 2.05 T gap flux density. An exclusive Tangerine
TM
radial phasing-plug assures a smooth upper range response.
The excellent performance characteristics of these drivers make them the
high frequency component of choice for all large sound systems when
premium dynamic reproduction is required.
MR II 564B/594B GENERAL PRODUCT DESCRIPTION
Altec Lansing's MR II 564B and MR II 594B Mantaray
TM
constant-directivity
horns feature efficient mid and high frequency response with proper
loading down to 500 Hz, plus excellent directivity control over their
respective 60°Horizontal x 40°Vertical and 90°Horizontal x 40°Vertical
coverage patterns.
The geometry of the MR II 564B and MR II 594B reduces the problem of
high frequency beaming and maintains uniform dispersion at all
frequencies within the rated frequency range. Therefore, the same
quality sound will be heard by listeners sitting off-axis and on-axis to the
MANTAR
A
Y
TM
horn.
Altec Lansing MANTAR
A
Y
TM
horns are constructed of heavy-duty, weather
resistant fiberglass. This construction technique results in a horn design
that is surprisingly lightweight, yet extremely rugged and non-resonant.
P
R O F E S S I O N A l
1000 W. Wilshire Blvd., Suite 362 • Oklahoma City, Oklahoma 73116 • Phone: 1-405-848-3108 • Fax: 1-405-848-3217 • www.altecpro.com
MR II 564B
Medium Throw 60º x 40º
Mantaray
TM
1.4” Throat
High Frequency Horn
MR II 594B
Medium Throw 90º x 40º
Mantar
a
y
TM
1.4” Throat
High Frequency Horn
FREQUENCY RESPONSE
1, 2
399-8B/16B with MR II 564B: 500 Hz – 16 kHz
399-8B/16B with MR II 594B: 500 Hz – 16 kHz
(flat 500 Hz – 6 kHz, with 6 dB/octave roll-off to 16 kHz)
USABLE LOW FREQUENCY LIMIT (-10 dB)
1, 2
500 Hz
USABLE HIGH FREQUENCY LIMIT (-10 dB)
1, 2
16
k
Hz
SENSITIVITY
3
399-8B/16B with MR II 564B: 112 dB SPL
399-8B/16B with MR II 594B: 110 dB SPL
POWER HANDLING
4
>
500 Hz: 40 W continuous; 160 W peak
>
1 kHz: 80 W continuous; 320 W peak
PEAK OUTPUT (1 m)
5
399-8B/16B with MR II 564B: 135 dB SPL
399-8B/16B with MR II 594B: 133 dB SPL
COVERAGE ANGLES
6
MR II 564B: 60º (horizontal) x 40º (vertical)
MR II 594B: 90º (horizontal) x 40º (vertical)
DIRECTIVITY FACTOR, Q
6
MR II 564B: 23.0
MR II 594B: 12.9
DIRECTIVITY INDEX, DI
6
MR II 564B: 13.6 dB
MR II 594B: 11.1 dB
IMPEDANCE
7
Nominal:
8.0 Ohms or 16.0 Ohms
Minimum: 8.0 Ohms or 16.0 Ohms between 4 kHz and 5 kHz
HARMONIC DISTORTION
8
THD: 1.47%
INPUT CONNECTIONS
1 x 2 position barrier strip with 0.250 in.
blade type terminals
FINISH
Dark gray enamel
REPLACEMENT HF DIAPHRAGM ASSEMBLY
25884: 8 Ohms
25885: 16 Ohms
MOUNTING DATA (DRIVERS)
Three 3/8-24 studs on a 3.25 in. diameter bolt circle
(Altec Lansing Standard)
Four 3/8-24 studs on a 4.75 in. diameter bolt circle
DIMENSIONS
399-8B/16B
Diameter: 7.7 in. (196 mm)
Depth: 3.88 in. (99 mm)
MR II 564B
Height: 12.75 in. (324 mm)
Width: 12.75 in. (324 mm)
Depth: 12.50 in. (318 mm)
MR II 594B
Height: 14.13 in. (359 mm)
Width: 24.00 in. (610 mm)
Depth: 12.00 in. (305 mm)
NET
WEIGHT
399-8B/16B: 20.6
lbs.
(9.3
kg
)
MR II 564B: 5
lbs.
(2.3
kg
)
MR II 594B: 5
lbs.
(2.3
kg
)
SHIPPING WEIGHT
399-8B/16B: 22
lbs.
(10.0
kg
)
MR II 564B: 7
lbs.
(3.2
kg
)
MR II 594B: 7
lbs.
(3.2
kg
)
