Altec Lansing CF108-4TWG User Manual

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CF108 SERIES

8” Ceiling Speakers

P R O F E S S I O N A L

FEATURES – THE ALTEC LANSING DIFFERENCE

Superior entry level 8 inch/ 200 mm loudspeaker

8 W EIA / 32 W peak power handling

Corrosion-resistantframe

Special moisture resistant cone material

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

International versions with factory-mounted70 V/100 V transformers

The “WG” model comes with factory-installedcorrosion-resistantround 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-resistantspeaker frame. To aid in the dispersion of higher frequencies, the loudspeaker employs an acoustically isolatedfree-edgeHF 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-installedcorrosion-resistantgrille.

CF108-4TCF108-4T-71CF108-4TWGCF108-4TWG-71

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)

 

3 lbs 15 oz (1.8 kg)

Low frequency limit (-10dB)

 

Diameter: 8.07 in (205 mm)

 

CF108-4TWG

 

 

 

65 Hz

 

CF108-4TWG/CF108-4TWG-71

 

5 lbs 15 oz (2.7 kg)

Power Handling

 

Height: 3.39 in (88.5 mm)

 

CF108-4T-71

 

Diameter: 12.87 in (327 mm)

 

8 W EIA, 32 W peak

 

 

4 lbs 5 oz (2.0 kg)

 

 

 

Sensitivity (SPL - 1 W 1 m)

 

NET WEIGHT

 

CF108-4TWG-71

 

 

 

98 dB

 

CF108-4T

 

6 lbs 5 oz (2.9 kg)

Maximum Output (Maximum SPL)

 

3 lbs 8 oz (1.6 kg)

 

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 @

 

 

 

0.63 lb (0.29 kg)

 

CF108-4T-71

 

4 W, 2 W, 1 W and 0.5 W

Impedance

 

3 lbs 12 oz (1.7 kg)

 

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

 

 

 

Nominal - 8 Ohms

 

CF108-4TWG-71

 

4 Watt 70 V/100 V with taps @

Minimal - 8.7 Ohms

 

5 lbs (2.3 kg)

 

4 W, 2 W, 1 W and 0.5 W

1000 W. Wilshire Blvd., Suite 362 • Oklahoma City, Oklahoma 73116 • Phone: 1-405-848-3108• Fax:1-405-848-3217• www.altecpro.com

ARCHITECTS & ENGINEERS SPECIFICATION

The loudspeaker shall be an Altec Lansing Professional CF108-4T /CF108-4TWGwith an 8 inch (200 mm)full-rangespeaker with acoustically isolatedfree-edgeHF cone andcorrosion-resistantframe. 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 ProfessionalCF108-4Twith a 4 Watt 25 V/70 Vfactory-installedtransformer, and aCF108-4TWGwith

a 4 Watt 25 V/70 V transformer and factory-installedcorrosion resistant round, white metal grille. All transformers shall have a low < 1.0 dB insertion loss.

ENCLOSURES AND BAFFLES

The CF108-seriesceiling 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)

Impedance

MOUNTING DIMENSIONS

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.

Beamwidth

Q & Directivity Index

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A

B

 

 

 

 

 

 

 

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)

 

 

 

 

 

 

 

 

 

 

 

 

AB

One Octave Polar Response Charts 6 dB/Division

250 Hz

500 Hz

1 kHz

2 kHz

4 kHz

8 kHz

As we are continually striving to improve Altec Lansing products, specifications are subject to change without notice.

TRANSFORMER CHART

CF108

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

WIRING DIAGRAM (CF108-4T/CF108-4TWG)

 

 

 

 

 

 

 

 

 

 

 

 

 

VIOLET

 

 

 

 

 

 

 

 

WHITE LEAD

 

 

 

 

 

 

 

 

 

 

 

 

 

BLUE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

GREEN

 

 

 

 

 

 

 

 

 

 

 

+

 

 

 

 

 

 

 

 

 

 

YELLOW

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

8 Ω

 

 

 

 

 

 

 

 

 

 

 

 

 

ORANGE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RED

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

-

 

 

 

 

 

 

 

 

 

 

 

BROWN

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

COMMON

 

 

 

 

 

 

 

 

GRAY LEAD

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

COMMON

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TRANSFORMER CHART

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CF108-71

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Premium 8 W(T508-71) /

70 V Primary Tap

100 V Primary Tap

 

 

 

 

 

 

4 W (T504-71)

Transformer

4 W(T504-71)

4 W(T504-71)

 

 

 

 

 

 

 

 

 

Primary Tap Color Code

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Black

 

 

 

 

 

Common

Common

 

 

 

 

 

 

 

 

 

Brown

 

 

 

 

 

4.0 W

N/A

 

 

 

 

 

 

 

 

 

Red

 

 

 

 

 

2.0 W

4.0 W

 

 

 

 

 

 

 

 

 

Orange

 

 

 

 

 

1.0 W

2.0 W

 

 

 

 

 

 

 

 

 

Yellow

 

 

 

 

 

0.5 W

1.0 W

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

WIRING DIAGRAM (CF108-4T71/CF108-4TWG-71)

 

 

 

 

 

 

 

 

 

 

YELLOW

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ORANGE

 

1.0 dB

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RED

 

 

0.5 dB

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BROWN

 

 

 

 

 

 

+

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

8 Ω

 

 

 

 

BLACK/WHITE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

COMMON

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BLACK LEAD

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

COMMON

 

 

 

 

 

 

-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

P R OF E S S I O N A 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

Web: www.altecpro.com • Email: proinfo@alteclansing.com

CF108-SSREV05