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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 ft
3
(0.028 m
3
)
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