Altec Lansing FM912-8A SPEAKER SYSTEM Guide de l'utilisateur

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

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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