Altec Lansing CF108-4T, CF108-4T-71, CF108-4TWG-71, CF108-4TWG User Manual

CF108 Series

P ROFESSIONAl

8” Ceiling Speakers

FEATURES – THE ALTEC LANSING DIFFERENCE

• Superior entry level 8 inch/ 200 mm loudspeaker

• 8 W EIA / 32 W peak power handling

• Corrosion-resistant frame

• Special moisture resistant cone material

• 4 W 25 V / 70 V factory-mounted < 1 dB insertion loss
transformer

• International versions with factory-mounted 70 V/100 V

transformers

• The “WG” model comes with factory-installed
corrosion-resistant round white metal grille

GENERAL PRODUCT DESCRIPTION

The Altec Lansing Professional CF108 series is the result
of significant research into the applications of speech
intelligibility and high fidelity music reproduction. The
CF108 speakers are an excellent choice for standard ceiling
height applications in educational facilities, shopping malls,
restaurants, office buildings and commercial facilities. The
moisture resistant 8 inch / 200 mm speaker features a
corrosion-resistant speaker frame. To aid in the dispersion
of higher frequencies, the loudspeaker employs an
acoustically isolated free-edge HF cone. The 4 watt
25 V / 70 V transformer has a low <1 .0 dB insertion loss.
Our international versions feature a < 0.6 dB insertion loss
4 W 70 V/100 V transformer. For convenience, the WG
version features a factory-installed corrosion-resistant grille.

CF108-4T

CF108-4TWG

CF108-4T-71

CF108-4TWG-71

SPECIFICATION

Frequency Response

82 – 17,000 Hz +/- 5dB

Low frequency limit (-10 dB)

65 Hz

Power Handling

8 W EIA, 32 W peak

Sensitivity (SPL - 1 W 1 m)

98 dB

Maximum Output (Maximum SPL)

113 dB

Magnet Weight

0.63 lb (0.29 kg)

Impedance

Nominal - 8 Ohms
Minimal - 8.7 Ohms

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

Dimensions

CF108-4T/CF108-4T-71

Height: 3.31 in (87.5 mm)
Diameter: 8.07 in (205 mm)

CF108-4TWG/CF108-4TWG-71

Height: 3.39 in (88.5 mm)
Diameter: 12.87 in (327 mm)

Net Weight

CF108-4T

3 lbs 8 oz (1.6 kg)

CF108-4TWG

4 lbs 12 oz (2.2 kg)

CF108-4T-71

3 lbs 12 oz (1.7 kg)

CF108-4TWG-71

5 lbs (2.3 kg)

SHIPPING Weight:

CF108-4T

3 lbs 15 oz (1.8 kg)

CF108-4TWG

5 lbs 15 oz (2.7 kg)

CF108-4T-71

4 lbs 5 oz (2.0 kg)

CF108-4TWG-71

6 lbs 5 oz (2.9 kg)

Transformer:

CF108-4T/CF108-4TWG

4 Watt 25 V/70 V with taps @
4 W, 2 W, 1 W and 0.5 W

CF108-4T-71/CF108-4TWG-71

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

ARCHITECTS & ENGINEERS SPECIFICATION

SAFETY CONSIDERATION

The loudspeaker shall be an Altec Lansing Professional CF108-4T
/ CF108-4TWG with an 8 inch (200 mm) full-range speaker with
acoustically isolated free-edge HF cone and corrosion-resistant
frame. The speaker shall have a power rating of 8 W EIA / 32
W peak. The frequency response shall be 82 to 17,000 Hz +/­5dB with a sensitivity of 98 dB @ 1 W 1 m. The model numbers
shall be Altec Lansing Professional CF108-4T with a 4 Watt 25
V/70 V factory-installed transformer, and a CF108-4TWG with
a 4 Watt 25 V/70 V transformer and factory-installed corrosion
resistant round, white metal grille. All transformers shall have
a low < 1.0 dB insertion loss.

ENCLOSURES AND BAFFLES

The CF108-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.

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 8 inch (200 mm) round
and square metal enclosures, grilles and tile bridge. The CF108
Series will also fit on standard industry ceiling speaker
hardware.

Beamwidth

Impedance

MOUNTING DIMENSIONS

A

Q & Directivity Index

AB

CF108-4T/
CF108-4T71 8.07 in (205 mm) 3.31 in (84 mm)

CF108-4TWG/
CF108-4T71WG 12.87 in (327 mm) 3.39 in (86 mm)

B