Altec Lansing CD912-8A CEILING SPEAKER Manual de usuario

CD912-8A

12” Ceiling Speaker

SPECIFICATION

Frequency Response

75 – 15,000 Hz +/- 5dB

Low frequency limit (-10 dB)

45 Hz

Power Handling

125 W EIA, 500 W peak

Sensitivity (SPL - 1 W 1 m)

100 dB

Maximum Output (Peak SPL)

127 dB

Magnet Weight

2.4 lb (1.1 Kg)

Impedance

Nominal - 8 Ohms

Minimal - 4.6 Ohms

Crossover

1,500 Hz

Dimensions:

CD912-8A

Height: 4.92 in (125.7 mm)

Diameter: 12.24 in (311 mm)

Net Weight:

CD912-8A

14 lbs 1 oz (6.4 kg)

SHIPPING Weight:

CD912-8A

17 lbs 3 oz (7.8 kg)

Optional Transformer:

T516-71

16 Watt, 70 V / 100 V with 70 V

taps @ 16 W, 8 W, 4 W and 2.0 W

T532-71

32 Watt, 70 V / 100 V with 70 V

taps @ 32 W, 16 W, 8 W and 4.0 W

repair parts:

Diaphragm/Voice Coil Assembly:

R-912-8HF Kit

12” Driver Recone Kit:

R-912-8LF Kit

FEATURES – THE ALTEC LANSING DIFFERENCE

• High Fidelity Duplex®12 inch / 300 mm Speaker

• High Performance 125 W EIA / 500 W peak power

handling

• Point-Source design for superior speech intelligibility

• Corrosion resistant, die-cast speaker frame

• Special moisture resistant cone material

• Two low insertion loss transformers available

CD912 Series

GENERAL PRODUCT DESCRIPTION

Twelve-inch Duplex®speakers from Altec Lansing are the

most popular hotel ballroom ceiling speakers in the world.

The new Altec Lansing Professional CD912 is an excellent

choice for hotel meeting spaces, convention centers, airports

& transportation facilities, and any high ceiling applications

that require reproduction of high fidelity music and

intelligible speech. The loudspeaker consists of a 12 inch /

300 mm moisture resistant cone woofer, a broad dispersion

dome tweeter with heat resistant voice coils and die-cast

corrosion-resistant speaker frame. A 1,500 Hz second order

crossover provides smooth high fidelity transitions. The

optional transformers (16 and 32 Watts) feature a low

< 0.6 dB insertion loss.

PROFESSIONAl

1000 W. Wilshire Blvd., Suite 362 • Oklahoma City, Oklahoma 73116 • Phone: 1-405-848-3108 • Fax: 1-405-848-3217 • www.altecpro.com

MOUNTING DIMENSIONS

Frequency Response (1 W 1 m on-axis)

Q&Directivity Index

Beamwidth

Impedance

CD912-8A 12.24 in (311 mm) 4.92 in (125 mm)

ARCHITECTS & ENGINEERS SPECIFICATION

The loudspeaker shall be an Altec Lansing Professional CD912-8A

Duplex®with a 12 inch (300 mm) diameter moisture resistant

woofer, a broad dispersion dome tweeter with heat resistant voice

coil and a die-cast corrosion-resistant speaker frame. The speaker

shall have a power rating of 125 W EIA / 500 W peak. The

frequency response shall be 75 to 15,000 Hz +/- 5 dB with a

sensitivity of 100 dB @ 1 W 1 m. The model number shall be

Altec Lansing Professional CD912-8A. Optional transformers shall

be the T516-71 (16 Watt, 70 V/100 V) or the T532/71 (32 Watt,

70 V/100 V). Transformers shall have a low < 0.6 dB insertion loss.

ENCLOSURES AND BAFFLES

The CD912-8A ceiling speaker will fit on a standard 12 inch

(300 mm) baffle, enclosures and back boxes.

The driver was housed in a 1.8 ft3(0.051 m3) enclosure.

Please note that larger volume enclosures will result

in altered low frequency performance.

SAFETY CONSIDERATION

1. Appropriate connectors with suitable ratings must be used

to make all installation connections.

2. All unused taps must be insulated with suitable insulation.

3. Transformers and speaker combinations must be supplied

by a suitable amplifier incorporating ungrounded outputs

only and reinforced insulation (as per IEC60065) from output

to mains.

ACCESSORIES

Altec Lansing recommends use of our 12 inch (300 mm) square

metal enclosures and grilles. The CD912 Series will also fit on

standard industry ceiling speaker hardware.

250 Hz 500 Hz

1 kHz 2 kHz

4 kHz 8 kHz

As we are continually striving to improve Altec Lansing products, specifications are subject to change without notice.

One Octave Polar Response Charts

6 dB/Division

CD912-SS REV06

TRANSFORMER CHART

WIRING DIAGRAM

CD912-8A

YELLOW

0.5 dB

1.0 dB

8 Ω

ORANGE

RED

BROWN

COMMON

BLACK/WHITE

BLACK LEAD

COMMON

Premium 16 W Premium 32 W 70.7 V 100 V

Transformer Transformer Primary Tap Primary Tap

(T516-71) (T532-71) Color Code Color Code

Primary Primary

16.0 W 32.0 W Brown Red

8.0 W 16.0 W Red Orange

4.0 W 8.0 W Orange Yellow

2.0 W 4.0 W Yellow N/A

Primary Common Black

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

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