Altec Lansing FM912-8A SPEAKER SYSTEM Benutzerhandbuch
FREQUENCY RESPONSE 1, 2
120 Hz - 15 kHz (±3 dB)
USABLE LOW FREQUENCY LIMIT (-10 dB) 1, 2
80 Hz
SENSITIVITY 3
100 dB SPL
POWER HANDLING 4
125 W continuous; 500 W peak
MAXIMUM OUTPUT (1 m) 5
121 dB SPL continuous; 127 dB SPL peak
COVERAGE ANGLES 6
95o(horizontal) x 95o(vertical)
DIRECTIVITY FACTOR, Q 6
9.30
DIRECTIVITY INDEX, Di 6
9.68 dB
TRANSDUCER COMPONENTS
LF: 1x 12 in. Woofer in a Sealed Enclosure (CD912-8B)
HF: 1x 1.5 in. Phenolic Dome Tweeter (CD912-8B)
IMPEDANCE 7
Nominal: 8.0 Ohms
Minimum: 5.0 Ohms at 5,500 Hz
CROSSOVER FREQUENCY
Passive LF-HF: 2,200 Hz
HARMONIC DISTORTION 8
1% rated power 10% rated power
2nd Harmonic 0.24% 2nd Harmonic 0.74%
3rd Harmonic 0.38% 3rd Harmonic 0.62%
THD 0.63% THD 1.47%
INPUT CONNECTIONS
2x 1/4 inch phone jacks and 2x NL4
ENCLOSURE MATERIALS & FINISH
18 mm, 13 ply Poplar Plywood Finished with
Charcoal Grey or White Catalyzed Polyurethane
SUSPENSION SYSTEM 9
This loudspeaker is not designed for overhead suspension
DIMENSIONS
12.40 in. (H) x 16.00 in. (W) x 15.5 in. (D)
315 mm (H) x 406 mm (W) x 394 mm (D)
WEIGHT
Net: 30 lbs. (13.6 kg)
Shipping: 36 lbs. (16.4 kg)
FM912-8A
FEATURES - THE ALTEC LANSING DIFFERENCE
• High Fidelity 12” / 300 mm Duplex®Speaker
• High Performance 125 W AES / 500 W Peak Power Handling
• Flexible Dual Aiming Angle (30°/60°) 18 mm/13-Ply Poplar
Cabinet Fills A Wide Variety Of Needs
• Cloth Covered Perforated Steel Grille
• Neutral Grille Cloth Included For Custom Color Matching
• Dual Neutrik®Speakon®and 1/4” Phone Jack Input Connectors
• Internal Steel Stand Adaptor
• Available in Charcoal Grey Or White Finishes
GENERAL PRODUCT DESCRIPTION
Based on Altec Lansing’s popular CD912-8B 12 inch / 300 mm
Duplex®speaker component, the FM912-8A offers superior
performance in a compact, easy-to-install package. The FM912-
8A is well-suited for a variety of floor monitor applications in
Auditoria and Houses of Worship.
Altec Lansing’s high performance model CD912-8B Duplex®is a
point-source 12 inch / 300 mm speaker with a robust corrosion-
resistant die-cast frame and weather-resistant low frequency
speaker cone mated to a 1.5 inch phenolic tweeter assembly.
The extended frequency response insures that both voice and
music program material will be faithfully reproduced.
The unique dual aiming angles for 30° or 60° allows for
maximum versatility as a floor monitor. The internal stand-
mount makes the FM912-8A an excellent choice for portable
applications. The charcoal grey or white painted cabinet blends
into most backgrounds, or it can be easily painted to match any
décor. Altec Lansing includes neutral grille cloth with each
speaker, allowing you to dye the cloth to integrate the speaker
into most surroundings.
To extend the low-frequency performance of the FM912-8A,
Altec Lansing offers the accessory model LF115-8A subwoofer.
The LF115-8A features a single 15 inch / 370 mm low frequency
speaker in a rectangular enclosure.
PROFESSIONAl
1000 W. Wilshire Blvd., Suite 362 • Oklahoma City, Oklahoma 73116 • Phone: 1-405-848-3108 • Fax: 1-405-848-3217 • www.altecpro.com
ARCHITECTS & ENGINEERS SPECIFICATION
The loudspeaker system shall be a two-way multi-purpose
type consisting of a 12 inch / 300 mm Duplex®loudspeaker
component with a wide-dispersion dome tweeter. The
crossover network shall be a dual-section, 12 dB/octave
slope low pass and 12 dB/octave slope high pass with an
electro-acoustic crossover frequency of 2,200 Hz. The
loudspeaker system shall have an operating bandwidth of
120 Hz - 15 kHz with a sensitivity of 100 dB when
measured at a distance of one meter. The power handling
capability shall be 125 W AES (500 W peak). Nominal
impedance shall be 8.0 Ohms with a minimum impedance
of 5.0 Ohms at 5,500 Hz. The loudspeaker shall have
nominal coverage angles of 95 degrees in the horizontal
plane and 95 degrees in the vertical plane. The unit shall
be a Sealed Enclosure, constructed of 18 mm Poplar
plywood painted charcoal grey or white with a cloth
covered metal grille. The cabinet shall include a steel
stand mount adapter. The dimensions shall be 12.40
inches (315 mm) high by 16.00 inches (406 mm) wide by
15.50 inches (394 mm) deep. The loudspeaker system shall
weigh 30 pounds (13.6 kg). The loudspeaker system shall
be the Altec Lansing Professional model FM912-8A.
As we are continually striving to improve Altec Lansing products, specifications are subject to change without notice.
Please visit www.altecpro.com for the lastest information on Altec Lansing Professional products.
ONE-THIRD OCTAVE POLAR RESPONSE CHARTS
6 dB / DIVISION
Horizontal
Vertical
E5471 REV03
© 2003 Altec Lansing Professional
1000 W. Wilshire Blvd., Suite 362
Oklahoma City, Oklahoma 73116
Phone: 1-405-848-3108 • Fax: 1-405-848-3217
Web: www.altecpro.com • Email: [email protected]
PROFESSIONAl
DIMENSIONS ARE IN INCHES.
DIMENSIONS SHOWN IN ( ) PARENTHESES ARE IN MILLIMETERS.
60º
30º
4.98 [126.60]
13.02 [330.64]
9.82 [249.32]
2.99 [76.00]
15.87 [403.00]
16.18 [411.00]
15.51 [393.94]
12.41 [315.14]
MOUNTING DIMENSIONS
SPECIFICATION NOTES
1 The frequency response of the loudspeaker system is measured at a distance of no less than 3 meters to obtain full range data. The level is
then corrected to be equivalent to a 2.83 V 1 m measurement. A near field measurement of the loudspeaker system is performed for
frequencies below 500 Hz. This data is then combined with the full range measurement to give an accurate composite frequency response
curve.
2 The limits of the frequency response are referenced to -3 dB of the systems rated sensitivity.
3 The sensitivity of the loudspeaker system is the log based average SPL taken over the intended bandwidth of operation for the system with a
2.83 V swept sine stimulus. The data is measured and level corrected in a manner consistent with note 1.
4 The power handling capacity of the loudspeaker system is tested using a full range form of AES Standard 2-1984. The test stimulus is band
limited (40 Hz – 16 kHz) pink noise with a 6 dB crest factor. The applied RMS voltage is determined using the minimum impedance of the
system. The amplifier used to drive the system has a minimum operating headroom of 6 dB referenced to the RMS voltage.
5 The maximum output level of the loudspeaker system is calculated based on the sensitivity and the power handling capabilities of the
system.
6 The coverage angles for the loudspeaker system are taken as the -6 dB points of the directivity response and averaged from 500 Hz – 16 kHz.
7 The minimum impedance of the loudspeaker system is taken over its intended band of operation.
8 The distortion measurements of the loudspeaker system are performed at a distance of 1 m with RMS input voltages corresponding to 1%
and 10% of rated system power handling calculated using minimum system impedance. The distortion percentages are log based averages
from 300 Hz – 3 kHz.
9 This loudspeaker system is not designed for overhead suspension.
VISIT WWW.ALTECPRO.COM FOR
• Authorized EASE®data on Altec Lansing Professional speakers.
• Specification sheets in .pdf format. Download page 1 of the specification sheet for your submittals.
• One paragraph A & E Specifications in .doc format
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