
CS 6940EN is a compact and elegant twoway column speaker providing highly
intelligible voice reproduction, and suitable
for installation into places of worship,
stations, subways and many other
environments. The terminal connection
blocks, for input and output flameproof
cables, are made of ceramic material. A
thermal fuse protects the integrity of the line
in case of heat affecting the speaker. Ground
screw available (if needed). Thanks to its IP66
protection grade, it can be installed both
indoor and outdoor.
• 8 x 3" fullrange transducers with 0.75" dome tweeter.
• Power selectable (100 V): 40 W – 20 W – 10 W – 5 W – 2.5 W.
• 95 dB sensitivity.
• Colour white RAL 9003.
• Aluminium body, grille and bracket.
• In/out ceramic terminal block.
• Thermal fuse protection.
• Protection grade IP66.
DATASHEET
Rev. L

Acoustical specifications
Frequency Response (-10dB):
Horizontal coverage angle:
System Sensitivity 1W @ 4m:
Constant Voltage Transformer:
Power selection 1 (100 V):
Power selection 2 (100 V):
Power selection 3 (100 V):
Power selection 4 (100 V):
Power selection 5 (100 V):
DATASHEET
RCF products are continually improved. All specifications are therefore subject to change without notice.

DATASHEET
RCF products are continually improved. All specifications are therefore subject to change without notice.

100 1000 10000
Frequency (Hz)
80
90
100
110
120
dB SPL
Response 1W/1m
100 1000 10000
Frequency (Hz)
1
10
100
Total Q
0
2
4
6
8
10
12
14
16
18
20
Directivity index Di, dB
Directivity Index and Q
100 1000 10000
Frequency (Hz)
-30
-25
-20
-15
-10
-5
0
5
Attenuation in dB
Vertical +10 degrees
Vertical +20 degrees
Vertical +30 degrees
Vertical +40 degrees
Vertical +50 degrees
Vertical +60 degrees
Normalized Vertical off-axis Response
100 1000 10000
0
30
60
90
120
150
180
210
240
270
300
330
360
Coverage Angle (Deg.)
Horizontal Beamwidth (1/3 Octave)
Vertical Beamwidth (1/3 Octave)
Beamwidth vs. Frequency
100 1000 10000
Frequency (Hz)
-30
-25
-20
-15
-10
-5
0
5
Attenuation in dB
Horizontal ±10 degrees
Horizontal ±20 degrees
Horizontal ±30 degrees
Horizontal ±40 degrees
Horizontal ±50 degrees
Horizontal ±60 degrees
Normalized Horizontal off-axis Response
DATASHEET

-48-48 -42-42 -36-36 -30-30 -24-24 -18-18 -12-12 -6-6 00
300°
330°
270°
240°
210°
180°
150°
120°
90°
60°
30°
0°
630
500
400
Horizontal 1/3 Octave Polars
-48-48 -42-42 -36-36 -30-3 0 -24-24 -18-18 -12-12 -6-6 00
300°
330°
270°
240°
210°
180°
150°
120°
90°
60°
30°
0°
5000
4000
3150
Horizontal 1/3 Octave Polars
-48-48 -42-42 -36-36 -30-30 -24-24 -18-18 -12-12 -6-6 00
150°
120°
180°
210°
240°
270°
300°
330°
0°
30°
60°
90°
630
500
400
Vertical 1/3 Octave Polars
-48-48 -42-42 -36-36 -30-3 0 -24-24 -18-18 -12-12 -6-6 00
150°
120°
180°
210°
240°
270°
300°
330°
0°
30°
60°
90°
5000
4000
3150
Vertical 1/3 Octave Polars
-48-48 -42-42 -36-36 -30-3 0 -24-24 -18-18 -12-12 -6-6 00
300°
330°
270°
240°
210°
180°
150°
120°
90°
60°
30°
0°
1250
1000
800
Horizontal 1/3 Octave Polars
-48-48 -42- 42 -36-36 -30-30 -24-24 -18-18 -12-12 -6-6 00
300°
330°
270°
240°
210°
180°
150°
120°
90°
60°
30°
0°
10000
8000
6300
Horizontal 1/3 Octave Polars
-48-48 -42-42 -36-36 -30-3 0 -24-24 -18-18 -12-12 -6-6 00
150°
120°
180°
210°
240°
270°
300°
330°
0°
30°
60°
90°
1250
1000
800
Vertical 1/3 Octave Polars
-48-48 -42- 42 -36-36 -30-30 -24-24 -18-18 -12-12 -6-6 00
150°
120°
180°
210°
240°
270°
300°
330°
0°
30°
60°
90°
10000
8000
6300
Vertical 1/3 Octave Polars
-48-48 -42-42 -36-36 -30-3 0 -24-24 -18-18 -12-12 -6-6 00
300°
330°
270°
240°
210°
180°
150°
120°
90°
60°
30°
0°
2500
2000
1600
Horizontal 1/3 Octave Polars
-48-48 -42-42 -36-36 -30-3 0 -24-24 -18-18 -12-12 -6-6 00
150°
120°
180°
210°
240°
270°
300°
330°
0°
30°
60°
90°
2500
2000
1600
Vertical 1/3 Octave Polars
DATASHEET

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DATASHEET

NO CAUTION is NECESSARY in case of ALERTED PERSON for AUDIO voltages up to 120V, when warning symbols are present near the connection
terminals. In the case of AUDIO voltages up to 71V, it is not even necessary to put warning symbols.
No need of linking to earth metal parts of speakers equipped with transformers and connected to 70.7 V / 100 V outputs of power amplifiers that do
not have any reference to earth (ref. EN 62368-1 item 4.3.2.2 ), unless specific local requirements.
DATASHEET