PR OFE S S IONA L
909-8B/16B
1” Exit High Frequency Compression Driver
21216B
1” Throat To 1.4” Throat Adaptor
MR II 564B
Medium Throw 60º x 40º
MantarayTM 1.4” Throat
High Frequency Horn
FEATURES - THE ALTEC LANSING DIFFERENCE
•Superior Bandwidth
•High Performance 30W AES / 120W Peak Power Handling
•Smooth and Transparent
909-8B/16B GENERAL PRODUCT DESCRIPTION
Altec Lansing’s 909-8B and 909-16B small format, high frequency, compression drivers are designed for use in professional sound reinforcement systems where both wide bandwidth and high 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 to the highest threshold of human hearing. 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 2.5 lbs. (1.1 kg) ferrite magnet, provides a 1.8 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 small to medium size sound systems when premium dynamic reproduction is required.
MR II 564B GENERAL PRODUCT DESCRIPTION
Altec Lansing's MR II 564B MantarayTM constant-directivity horn features efficient mid and high frequency response with proper loading down to 500 Hz, plus excellent directivity control over its 60°H x 40°V coverage pattern.
The geometry of the MR II 564B 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’s 21216B adapter is constructed of heavy gauge aluminum. This adapter is the perfect choice for coupling the 909-8B and 909-16B to our MANTARAYTM series horns.
FREQUENCY RESPONSE 1, 2
909-8B with MR II 564B: 500 Hz – 20 kHz (flat 500 Hz – 6 kHz)
USABLE LOW FREQUENCY LIMIT 1, 2
500 Hz
USABLE HIGH FREQUENCY LIMIT 1, 2
20 kHz
SENSITIVITY 3
909-8B with MR II 564B: 110 dB SPL
POWER HANDLING 4
>500 Hz: 30 W continuous; 120 W peak
>1 kHz: 60 W continuous; 240 W peak
MAXIMUM OUTPUT (1 m) 5
909-8B with MR II 564B: 130 dB SPL
COVERAGE ANGLES 6
MR II 564B: 60º (horizontal) by 40º (vertical)
DIRECTIVITY FACTOR, Q 6
MR II 564B: 23.0
DIRECTIVITY INDEX, DI 6
MR II 564B: 13.6 dB
IMPEDANCE 7
Nominal: |
8.0 |
Ohms or 16.0 |
Ohms |
Minimum: |
8.0 |
Ohms or 16.0 |
Ohms at 6 kHz |
HARMONIC DISTORTION 8
THD: 1.59%
INPUT CONNECTIONS
1 x 2 position barrier strip with 0.250 in. blade type terminals
FINISH
Dark gray enamel
REPLACEMENT HF DIAPHRAGM ASSEMBLY
26420: 8 Ohms
26421: 16 Ohms
MOUNTING DATA (DRIVERS)
Two 3/8-24 studs on a 3.0 in. diameter bolt circle (Altec Lansing Standard)
DIMENSIONS |
|
909-8B/16B |
Diameter: 5.5 in. (140 mm) |
|
Depth: 2.7 in. (69 mm) |
MR II 564B |
Height: 12.75 in. (324 mm) |
|
Width: 12.75 in. (324 mm) |
|
Depth: 12.50 in. (318 mm) |
21216B |
Height: 3.25 in. (83 mm) |
|
Maximum Diameter: 5.5 in. (140 mm) |
NET WEIGHT |
|
909-8B/16B: |
6.4 lbs. (2.9 kg) |
MR II 564B: |
5 lbs. (2.3 kg) |
21216B: |
1 lbs. (0.5 kg) |
SHIPPING WEIGHT
909-8B/16B: 7.2 lbs. (3.3 kg) MR II 564B: 7 lbs. (3.2 kg) 21216B: 1.6 lbs. (0.7 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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