Altec Lansing CD408-32T, CD408-4T, CD408-8A, CD408-16T, CD408-8T User Manual

FEATURES – THE ALTEC LANSING DIFFERENCE

P ROFESSIONAl

®

• High Fidelity Duplex

• Designed to maximize music program reproduction

• High output 32 W EIA / 128 W peak power handling

• Point-Source design for excellent speech intelligibility

• Available with four factory-mounted 70 V / 100 V
transformers

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

• Corrosion-resistant speaker frame

• Special moisture resistant cone material

GENERAL PRODUCT DESCRIPTION

8 inch / 200 mm Premium Loudspeaker

CD408 SERIES

8” Ceiling Speakers

CD408-8A
CD408-4T
CD408-8T

CD408-16T

CD408-32T

The Altec Lansing Professional CD408 series uses Duplex
technology to maximize the reproduction of high output music
program material. The CD408 is an excellent choice for clubs,
restaurants, performance and transportation venues and all
applications requiring high output and high fidelity performance.
The loudspeaker consists of an 8 inch / 200 mm special moisture
resistant cone woofer, a broad dispersion cone tweeter with heat
resistant voice coils and a corrosion-resistant speaker frame. A
2,500 Hz first order crossover provides smooth high fidelity
transitions. The double magnet design allows physical, electrical,
and magnetic isolation. The optional 70 V / 100 V transformers
(4, 8, 16, 32 Watts) feature a low < 0.6 dB insertion loss.

SPECIFICATIONS

Frequency Response

82 – 16,000 Hz +/- 5dB

Low frequency limit (-10 dB)

66 Hz

Power Handling

32 W EIA, 128 W peak

Sensitivity (SPL - 1 W 1 m)

98 dB

Maximum Output (Peak SPL)

119 dB

Magnet Weight

0.62 lb (0.29 Kg)

Impedance

Nominal - 8 Ohms
Minimum - 7.8 Ohms

Crossover

2,500 Hz

Dimensions

CD408-8A

Height: 3.11 in (79.6 mm)
Diameter: 8.07 in (205 mm)

CD408-4T

Height: 3.68 in (94.1 mm)
Diameter: 8.07 in (205 mm)

CD408-8T

Height: 3.68 in (94.1 mm)
Diameter: 8.07 in (205 mm)

CD408-16T

Height: 4.06 in (104.1 mm)
Diameter: 8.07 in (205 mm)

CD408-32T

Height: 4.41 in (113.1 mm)
Diameter: 8.07 in (205 mm)

Net Weight

CD408-8A

2 lbs 8 oz (1.1 kg)

CD408-4T

3 lbs 13 oz (1.7 kg)

CD408-8T

4 lbs 1 oz (1.8 kg)

CD408-16T

4 lbs 10 oz (2.1 Kg)

CD408-32T

4 lbs 14 oz (2.2 kg)

Shipping weight

CD408-8A

3 lbs 4 oz (1.4 kg)

®

CD408-4T

4 lbs 9 oz (2.1 kg)

CD408-8T

4 lbs 14 oz (2.2 kg)

CD408-16T

5 lbs 7 oz (2.5 kg)

CD408-32T

5 lbs 13 oz (2.6 kg)

Transformer

CD408-4T

4 Watt 70 V/100 V transformer
with 70 V taps @ 4 W, 2 W, 1 W
and 0.5 W

CD408-8T

8 Watt 70 V/100 V transformer
with 70 V taps @ 8 W, 4 W, 2 W
and 1.0W

CD408-16T

16 Watt 70 V/100 V transformer
with 70 V taps @ 16 W, 8 W, 4 W
and 2.0 W

CD408-32T

32 Watt 70 V/100 V transformer
with 70 V taps @ 32 W, 16 W, 8 W
and 4.0 W

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

ARCHITECTS & ENGINEERS SPECIFICATION

The loudspeaker shall be an Altec Lansing Professional CD408
series Duplex®with an 8 inch (200 mm) diameter moisture
resistant woofer and a broad dispersion tweeter with heat
resistant voice coils. The speaker shall have a power rating
of 32 W EIA / 128 W peak, a double magnet assembly and
corrosion-resistant frame. The frequency response shall be 82
to 16,000 Hz +/- 5 dB with a sensitivity of 98 dB @ 1 W 1 m.
All transformers shall have a low < 0.6 dB insertion loss. The
model numbers shall be Altec Lansing Professional CD408-8A
for 8 Ohms impedance, CD408-4T with a 4 Watt 70 V/100 V
transformer, CD408-8T with an 8 Watt 70 V/100 V transformer,
CD408-16T with a 16 Watt 70 V/100 V transformer, and a CD408­32T with a 32 Watt 70 V/100 V transformer.

ENCLOSURES AND BAFFLES

The CD408-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.

ACCESSORIES

Altec Lansing recommends use of our 8 inch (200 mm) round and
square metal enclosures, grilles and tile bridge. The CD408 Series
will also fit on standard industry ceiling speaker hardware.

Frequency Response (1 W 1 m on-axis)

Impedance

MOUNTING DIMENSIONS

Beamwidth

Q&Directivity index

AB

CD408-8A 8.07 in (205 mm) 3.11 in (79 mm)

CD408-4T 8.07 in (205 mm) 3.68 in (94 mm)

CD408-8T 8.07 in (205 mm) 3.68 in (94 mm)

CD408-16T 8.07 in (205 mm) 4.06 in (103 mm)

CD408-32T 8.07 in (205 mm) 4.41 in (112 mm)

A

B