PR OFE S S IONA L
399-8B/16B
1.4” Exit High Frequency Compression Driver
MR II 564B
Medium Throw 60º x 40º
MantarayTM 1.4” Throat
High Frequency Horn
MR II 594B
Medium Throw 90º x 40º
MantarayTM 1.4” Throat
High Frequency Horn
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 MantarayTM 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 TangerineTM 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 MantarayTM 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 MANTARAYTM horn.
Altec Lansing MANTARAYTM 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.
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 kHz
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)
1000 W. Wilshire Blvd., Suite 362 • Oklahoma City, Oklahoma 73116 • Phone: 1-405-848-3108 • Fax: 1-405-848-3217 • www.altecpro.com
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