Altec Lansing CD308-16T Manuale utente

CD308-8A

CD308-4T

CD308-8T

CD308-16T

8” Ceiling Speakers

SPECIFICATIONS

Frequency Response

78 – 20,000 Hz +/- 5 dB

Low frequency limit (-10 dB)

63 Hz

Power Handling

16 W EIA, 64 W peak

Sensitivity (SPL - 1 W 1 m)

97 dB

Maximum Output (Peak SPL)

115 dB

Magnet Weight

0.63 lb (0.29 Kg)

Impedance

Nominal - 8 Ohms

Minimal - 7.3 Ohms

Crossover

3,000 Hz

DIMENSIONS

CD308-8A

Height: 3.11 in (79.6 mm)

Diameter: 8.07 in (205 mm)

CD308-4T

Height: 3.68 in (94.1 mm)

Diameter: 8.07 in (205 mm)

NET WEIGHT

CD308-8A

2 lbs 7 oz (1.1 kg)

CD308-4T

3 lbs 13 oz (1.7 kg)

SHIPPING WEIGHT

CD308-8A

2 lbs 6 oz (1.4 kg)

CD308-4T

4 lbs 9 oz (2.1 kg)

TRANSFORMER

CD308-4T

4 W 70 V/100 V transformer

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

CD308-8T

8 W 70 V/100 V transformer

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

CD308-16T

16 W 70 V/100 V transformer

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

FEATURES – THE ALTEC LANSING DIFFERENCE

• Premium 8 inch / 200 mm Duplex®design

• Point-source design maximizes speech intelligibility

• 16 W EIA / 64 W peak power handling

• Available with three factory-mounted 70 V / 100 V

transformers

• All transformers have a low < .6dB insertion loss

• Corrosion resistant speaker frame

• Special moisture resistant speaker cone

CD308 Series

GENERAL PRODUCT DESCRIPTION

The Altec Lansing Professional CD308 series is a premium-grade

Duplex®component designed to faithfully reproduce music

program and the human voice. The CD308 family is an excellent

choice for meeting spaces, under-balcony applications, 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-order crossover 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.

CD308-8T

Height: 3.68 in (94.1 mm)

Diameter: 8.07 in (205 mm)

CD308-16T

Height: 4.11 in (104.1 mm)

Diameter: 8.07 in (205 mm)

CD308-8T

4 lbs 1 oz (1.8 kg)

CD308-16T

4 lbs 10 oz (2.1 kg)

CD308-8T

4 lbs 13 oz (2.2 kg)

CD308-16T

5 lbs 7 oz (2.5 kg)

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 shall be an Altec Lansing Professional CD308

series Duplex®with an 8 inch (200 mm) diameter moisture-

resistant woofer and broad dispersion tweeter with heat

resistant voice-coils. The speaker shall have a power rating

of 16 W EIA / 64 W peak, a double magnet assembly and

corrosion-resistant frame. 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 Professional CD308-8A

for 8 Ohms impedance, CD308-4T with a 4 Watt 70 V/100 V

transformer, CD308-8T with an 8 Watt 70 V/100 V transformer,

and a CD308-16T with a 16 Watt 70 V/100 V transformer.

ENCLOSURES AND BAFFLES

The CD308-series ceiling 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.

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

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.

MOUNTING DIMENSIONS

Frequency Response (1 W 1 m on-axis)

Impedance Q&Directivity Index

Beamwidth

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)

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

250 Hz 500 Hz

1 kHz 2 kHz

4 kHz 8 kHz

One Octave Polar Response Charts

6 dB/Division

CD308-SS REV06

TRANSFORMER CHART

WIRING DIAGRAM

CD308

YELLOW

0.5 dB

1.0 dB

8 Ω

ORANGE

RED

BROWN

COMMON

BLACK/WHITE

BLACK LEAD

COMMON

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

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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