CF108 Series
8” Ceiling Speakers
PROFE S S IONA l
CF108-4T
CF108-4T-71
CF108-4TWG CF108-4TWG-71
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.
SPECIFICATION
Dimensions
SHIPPING Weight:
Frequency Response
CF108-4T/CF108-4T-71
CF108-4T
82 – 17,000 Hz +/- 5dB
Height: 3.31 in (87.5 mm)
Diameter: 8.07 in (205 mm)
3 lbs 15 oz (1.8 kg)
CF108-4TWG
5 lbs 15 oz (2.7 kg)
CF108-4T-71
Low frequency limit (-10 dB)
65 Hz
CF108-4TWG/CF108-4TWG-71
Height: 3.39 in (88.5 mm)
Diameter: 12.87 in (327 mm)
Power Handling
8 W EIA, 32 W peak
4 lbs 5 oz (2.0 kg)
Net Weight
Sensitivity (SPL - 1 W 1 m)
CF108-4TWG-71
98 dB
CF108-4T
6 lbs 5 oz (2.9 kg)
3 lbs 8 oz (1.6 kg)
Maximum Output (Maximum SPL)
Transformer:
113 dB
CF108-4TWG
CF108-4T/CF108-4TWG
4 lbs 12 oz (2.2 kg)
Magnet Weight
4 Watt 25 V/70 V with taps @
4 W, 2 W, 1 W and 0.5 W
0.63 lb (0.29 kg)
CF108-4T-71
3 lbs 12 oz (1.7 kg)
Impedance
CF108-4T-71/CF108-4TWG-71
4 Watt 70 V/100 V with taps @
4 W, 2 W, 1 W and 0.5 W
Nominal - 8 Ohms
Minimal - 8.7 Ohms
CF108-4TWG-71
5 lbs (2.3 kg)
1000 W. Wilshire Blvd., Suite 362 • Oklahoma City, Oklahoma 73116 • Phone: 1-405-848-3108 • Fax: 1-405-848-3217 • www.altecpro.com
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One Octave Polar Response Charts
6 dB/Division
500 Hz
2 kHz
8 kHz
250 Hz
1 kHz
4 kHz
As we are continually striving to improve Altec Lansing products, specifications are subject to change without notice.
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TRANSFORMER CHART
CF108
Utility 4 W
Transformer
(T404-27)
Utility 8 W
Transformer
(T408-27)
25 V
Primary Tap
Color Code
70 V
Primary Tap
Color Code
100 V
Primary Tap
Color Code
Primary Taps
Primary Taps
4.0 W
2.0 W
1.0 W
0.5 W
8.0 W
4.0 W
2.0 W
1.0 W
Brown
Red
Yellow
Green
Blue
Green
Blue
Orange
Yellow
Violet
N/A
Violet
Black
Primary Common
WIRING DIAGRAM (CF108-4T/CF108-4TWG)
VIOLET
WHITE LEAD
BLUE
GREEN
YELLOW
ORANGE
RED
+
-
8 Ω
BROWN
GRAY LEAD
COMMON
COMMON
TRANSFORMER CHART
CF108-71
70 V Primary Tap
4 W(T504-71)
100 V Primary Tap
4 W(T504-71)
Premium 8 W(T508-71) /
4 W (T504-71) Transformer
Primary Tap Color Code
Common
4.0 W
Common
N/A
Black
Brown
Red
2.0 W
4.0 W
2.0 W
1.0 W
1.0 W
Orange
Yellow
0.5 W
WIRING DIAGRAM (CF108-4T 71/CF108-4TWG-71)
YELLOW
1.0 dB
ORANGE
0.5 dB
RED
+
BROWN
BLACK/WHITE
BLACK LEAD
8 Ω
COMMON
COMMON
-
PROFESS IONA 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
CF108-SS REV05
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