Altec Lansing CD308-16T User Manual

Size:
252.64 Kb
Download

P R OF E S S I ON A L

FEATURES – THE ALTEC LANSING DIFFERENCE

Premium 8 inch / 200 mm Duplex® design

Point-sourcedesign maximizes speech intelligibility

16 W EIA / 64 W peak power handling

Available with three factory-mounted70 V / 100 V transformers

All transformers have a low < .6dB insertion loss

Corrosion resistant speaker frame

Special moisture resistant speaker cone

GENERAL PRODUCT DESCRIPTION

The Altec Lansing Professional CD308 series is a premium-gradeDuplex® component designed to faithfully reproduce music program and the human voice. The CD308 family is an excellent choice for meeting spaces,under-balconyapplications, A/V presentation facilities, shops & restaurants and other high quality general paging applications. The loudspeaker consists of an

8 inch / 200 mm special moisture resistant cone woofer and broad dispersion cone tweeter with heat resistant voice coils. The speaker frame has been treated for rust prevention. A 3,000 Hz first-ordercrossover provides smooth high frequency transitions. The double magnet design allows physical, electrical, and magnetic isolation. The optional 70 V/100 V transformers (4, 8, and 16 Watts) feature a low < 0.6 dB insertion loss.

CD308 SERIES

8” Ceiling Speakers

CD308-8A

CD308-4T

CD308-8T

CD308-16T

 

SPECIFICATIONS

 

 

 

 

NET WEIGHT

 

 

 

 

Frequency Response

 

 

 

 

CD308-8A

 

 

 

 

 

 

 

 

CD308-8T

 

78 – 20,000 Hz +/- 5 dB

 

 

 

 

2 lbs 7 oz (1.1 kg)

4 lbs 1 oz (1.8 kg)

 

 

Low frequency limit (-10dB)

 

 

 

 

CD308-4T

CD308-16T

 

 

63 Hz

 

 

 

 

3 lbs 13 oz (1.7 kg)

4 lbs 10 oz (2.1 kg)

 

 

Power Handling

 

 

 

 

SHIPPING WEIGHT

 

 

 

 

 

 

 

 

 

 

 

 

16 W EIA, 64 W peak

 

 

 

 

 

 

 

 

Sensitivity (SPL - 1 W 1 m)

 

 

 

 

CD308-8A

CD308-8T

 

 

97 dB

 

 

 

 

2 lbs 6 oz (1.4 kg)

4 lbs 13 oz (2.2 kg)

 

 

Maximum Output (Peak SPL)

 

 

 

 

CD308-4T

CD308-16T

 

 

115 dB

 

 

 

 

4 lbs 9 oz (2.1 kg)

5 lbs 7 oz (2.5 kg)

 

 

Magnet Weight

 

 

 

 

TRANSFORMER

 

 

 

 

 

 

 

 

 

 

 

 

0.63 lb (0.29 Kg)

 

 

 

 

 

 

 

 

Impedance

 

 

 

 

CD308-4T

 

 

 

 

Nominal - 8 Ohms

 

 

 

 

4 W 70 V/100 V transformer

 

Minimal - 7.3 Ohms

 

 

 

 

with 70 V taps @ 4 W, 2 W, 1 W and 0.5 W

 

Crossover

 

 

 

 

CD308-8T

 

 

 

 

3,000 Hz

 

 

 

 

8 W 70 V/100 V transformer

 

 

 

 

 

 

with 70 V taps @ 8W, 4W, 2W and 1.0W

 

DIMENSIONS

 

 

 

 

CD308-16T

 

 

 

 

CD308-8A

CD308-8T

 

 

 

16 W 70 V/100 V transformer

 

Height: 3.11 in (79.6 mm)

Height:

3.68 in (94.1 mm)

with 70 V taps @ 16W, 8W, 4W and 2.0W

 

Diameter: 8.07 in (205 mm)

Diameter:

8.07 in (205 mm)

 

 

 

 

 

CD308-4T

CD308-16T

 

 

 

 

 

 

 

 

Height: 3.68 in (94.1 mm)

Height:

4.11 in (104.1 mm)

 

 

 

 

 

Diameter: 8.07 in (205 mm)

Diameter:

8.07 in (205 mm)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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 shall be an Altec Lansing Professional CD308 series Duplex® with an 8 inch (200 mm) diameter moistureresistant woofer and broad dispersion tweeter with heat resistantvoice-coils.The speaker shall have a power rating of 16 W EIA / 64 W peak, a double magnet assembly andcorrosion-resistantframe. The frequency response shall be 78 to 20,000 Hz +/- 5 dB with a sensitivity of 97 dB @ 1 W 1 m. All transformers shall have a low < 0.6 dB insertion loss. The model numbers shall be Altec Lansing ProfessionalCD308-8Afor 8 Ohms impedance,CD308-4Twith a 4 Watt 70 V/100 V

transformer, CD308-8Twith an 8 Watt 70 V/100 V transformer, and aCD308-16Twith a 16 Watt 70 V/100 V transformer.

ENCLOSURES AND BAFFLES

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.SORIES

ACCESSORIES

The CD308-seriesceiling speakers will fit on standard 8 inch (200 mm) baffles, enclosures and back boxes.

All measurements were made in a standard AES baffle for a 12 inch driver. The driver was housed in a 1.0 ft3 (0.028 m3) enclosure.

Frequency Response (1 W 1 m on-axis)

Impedance

MOUNTING DIMENSIONS

Altec Lansing recommends use of our 8 inch (200 mm) round and square metal enclosures, grilles and tile bridge. The CD308 Series will also fit on standard industry ceiling speaker hardware.

Beamwidth

Q & Directivity Index

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A

B

 

 

 

 

 

CD308-8A

8.07 in (205 mm)

3.11 in (79 mm)

 

 

 

 

CD308-4T

8.07 in (205 mm)

3.68 in (94 mm)

 

 

 

 

CD308-8T

8.07 in (205 mm)

3.68 in (94 mm)

 

 

 

 

CD308-16T

8.07 in (205 mm)

4.11 in (105 mm)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

B

A

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

One Octave Polar Response Charts 6 dB/Division

 

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.

TRANSFORMER CHART

CD308

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Premium 4 W

Premium 8 W

 

Premium 16 W

70.7 V

100 V

 

 

 

 

Transformer

Transformer

 

Transformer

Primary Tap

Primary Tap

 

 

 

 

(T504-71)

(T508-71)

 

(T516-71)

Color Code

Color Code

 

 

 

 

Primary

Primary

 

Primary

 

 

 

 

 

 

 

 

4.0 W

8.0 W

 

16.0 W

Brown

Red

 

 

 

 

 

2.0 W

4.0 W

 

8.0 W

Red

Orange

 

 

 

 

 

1.0 W

2.0 W

 

4.0 W

Orange

Yellow

 

 

 

 

 

0.5 W

1.0 W

 

2.0 W

Yellow

N/A

 

 

 

 

 

 

Primary Common

 

Black

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

WIRING DIAGRAM

 

 

 

 

 

 

 

 

 

 

 

 

YELLOW

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ORANGE

 

1.0 dB

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RED

 

0.5 dB

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BROWN

 

 

 

 

 

 

 

+

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

8 Ω

 

 

BLACK/WHITE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

COMMON

 

 

 

 

 

 

 

 

 

 

 

 

 

BLACK LEAD

 

 

-

 

 

 

 

 

 

 

 

COMMON

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

P R OF E S S I ON A L

© 2002 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: proinfo@alteclansing.com

CD308-SSREV06