Altec lansing CD912-8A User Manual

FEATURES – THE ALTEC LANSING DIFFERENCE

P ROFESSIONAl

CD912 Series

12” Ceiling Speaker

CD912-8A

• High Fidelity Duplex

• 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

GENERAL PRODUCT DESCRIPTION

Twelve-inch Duplex
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.

®

12 inch / 300 mm Speaker

®

speakers from Altec Lansing are the

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

1000 W. Wilshire Blvd., Suite 362 • Oklahoma City, Oklahoma 73116 • Phone: [phone] • Fax: [phone] • www.altecpro.com

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

ARCHITECTS & ENGINEERS SPECIFICATION

SAFETY CONSIDERATION

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.

Frequency Response (1 W 1 m on-axis)

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.

Beamwidth

Impedance

MOUNTING DIMENSIONS

Q&Directivity Index

AB

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

A

B