Altec Lansing CF108-4T User manual

CF108-4T
CF108-4TWG
CF108-4T-71
CF108-4TWG-71
8” Ceiling Speakers
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
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
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
CF108 Series
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.
PROFESSIONAl
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 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.
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 CF108
Series will also fit on standard industry ceiling speaker
hardware.
MOUNTING DIMENSIONS
Frequency Response (1 W 1 m on-axis)
Q & Directivity Index
Beamwidth
Impedance
A
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

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

CF108-SS REV05
TRANSFORMER CHART
WIRING DIAGRAM (CF108-4T/CF108-4TWG)
CF108
VIOLET WHITE LEAD
GRAY LEAD
COMMON
8 Ω
BLUE
GREEN
YELLOW
ORANGE
RED
BROWN
COMMON
+
-
WIRING DIAGRAM (CF108-4T 71/CF108-4TWG-71)
YELLOW
0.5 dB
1.0 dB
8 Ω
ORANGE
RED
BROWN
COMMON
BLACK/WHITE
BLACK LEAD
COMMON
+
-
Utility 4 W Utility 8 W 25 V 70 V 100 V
Transformer Transformer Primary Tap Primary Tap Primary Tap
(T404-27) (T408-27) Color Code Color Code Color Code
Primary Taps Primary Taps
4.0 W 8.0 W Brown Yellow Green
2.0 W 4.0 W Red Green Blue
1.0 W 2.0 W Orange Blue Violet
0.5 W 1.0 W Yellow Violet N/A
Primary Common Black
CF108-71
Premium 8 W(T508-71) /
4 W (T504-71) Transformer
Primary Tap Color Code
Black
Brown
Red
Orange
Yellow
70 V Primary Tap
4 W(T504-71)
Common
4.0 W
2.0 W
1.0 W
0.5 W
100 V Primary Tap
4 W(T504-71)
Common
N/A
4.0 W
2.0 W
1.0 W
© 2002 Altec Lansing Professional
1000 W. Wilshire Blvd., Suite 362
Oklahoma City, Oklahoma 73116
Phone: [phone] • Fax: [phone]
Web: www.altecpro.com • Email: [email protected]
PROFESSIONAl
TRANSFORMER CHART