PL 50
CEILING SPEAKER
DESCRIPTION
PL 50 is a flush-mount ceiling 6” (dual-cone) loudspeaker.
It has an internal transformer that allows direct connection to 100 V constant
voltage lines.
The transformer has 2 inputs for power tapping: 6 – 3 W.
The false-ceiling installation is made through its 2 spring clamps without
using tools and other additional attachment components.
MAIN APPLICATIONS
MAIN FEATURES
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Shopping centres
Sport centres
Corridors
PA systems in general
SPECIFICATIONS
Input voltage
Power
Frequency response
Sensitivity
Max. sound pressure level
Transducer
Body material
Body colour
Grille material
Dimensions
Net weight
100 V
6–3W
100 Hz ÷ 20 kHz
90 dB dB (1 m / 1 W)
98 dB (1 m / 6 W)
6” dual-cone
UL94 H-B auto-extinguishing plastic, UV resistant
‘Signal white’ RAL 9003
plastic
ø 186 mm, 65 mm deep
0.49 kg
For paging and background music
Music power / RMS: 6 / 3 W
6” dual cone wide band loudspeaker
Sound pressure level at music power: 90 dB/1 m
100V
Built-in multi-tapped transformer for 100 constant voltage connection
Body in self-extinguishing plastic UL-94-H-B
Front plastic grille
PL 50
Response 1W/1m
Beamwidth vs. Frequency
110
360
Horizontal Beamwidth (1/3 Octave)
Vertical Beamwidth (1/3 Octave)
330
300
100
Coverage Angle (Deg.)
270
dB SPL
90
80
240
210
180
150
120
90
70
60
30
60
20
PL50
100
1000
Frequency (Hz)
0
100
10000
Directivity Index and Q
1000
Frequency (Hz)
10000
Normalized Horizontal off-axis Response
100
20
5
18
0
16
-5
Total Q
10
8
6
Directivity index Di, dB
12
10
Attenuation in dB
14
-10
-15
-20
4
2
1
100
1000
Frequency (Hz)
10000
0
-25
-30
100
Horizontal ±10 degrees
Horizontal ±20 degrees
Horizontal ±30 degrees
Horizontal ±40 degrees
Horizontal ±50 degrees
Horizontal ±60 degrees
1000
Frequency (Hz)
10000
PL 50
HORIZONTAL 1/3 POLAR PLOT
Horizontal 1/3 Octave Polars
315
250
200
0°
330°
30°
300°
270°
0
Horizontal 1/3 Octave Polars
60°
-6 -12 -18 -24 -30 -36 -42 -48
-48 -42 -36 -30 -24 -18 -12 -6
0
240°
270°
90°
0
-6 -12 -18 -24 -30 -36 -42 -48
2500
2000
1600
30°
0
Horizontal 1/3 Octave Polars
60°
-6 -12 -18 -24 -30 -36 -42 -48
-48 -42 -36 -30 -24 -18 -12 -6
240°
0
120°
150°
210°
180°
270°
90°
0
60°
-6 -12 -18 -24 -30 -36 -42 -48
270°
0
5000
4000
3150
0°
30°
-48 -42 -36 -30 -24 -18 -12 -6
240°
0
120°
150°
210°
180°
90°
150°
180°
Horizontal 1/3 Octave Polars
10000
8000
6300
0°
330°
30°
300°
60°
-6 -12 -18 -24 -30 -36 -42 -48
0
120°
210°
300°
90°
-48 -42 -36 -30 -24 -18 -12 -6
240°
150°
330°
30°
300°
180°
300°
270°
0
1250
1000
800
0°
330°
120°
210°
0°
330°
-48 -42 -36 -30 -24 -18 -12 -6
240°
150°
Horizontal 1/3 Octave Polars
60°
180°
Horizontal 1/3 Octave Polars
30°
300°
120°
210°
630
500
400
0°
330°
90°
270°
0
60°
-6 -12 -18 -24 -30 -36 -42 -48
-48 -42 -36 -30 -24 -18 -12 -6
240°
0
120°
150°
210°
180°
90°
0
4
0
note: if the line is 70 V instead, the power will be halVed.
Connect the amplifier output marked with ‘0’, ‘b’ or ‘COM’ to the loudspeaker
black wire (common).
According to the chosen power, connect the amplifier 100 V output (terminal
marked with ‘100 V’ or ‘a’) to either the red wire (6 W) or the white one (3 W).
Insulate the unused wire.
PART NUMBERS
6W
3W
COM
1.0-J-E
PL 50
NOTES ABOUT CONSTANT VOLTAGE SYSTEMS
13133060
DimensionS (All data are in
PL 60 - 23
6
164
- The loudspeaker input voltage (Vd) shall correspond to the amplifier
output voltage (Va).
- The sum of nominal power values (Pd x n) of all loudspeakers connected to
the line shall not exceed the amplifier power (Pa).
- Make sure all loudspeakers are connected
in phase to ensure a correct
SCHEMATICS
mm)
sound reproduction.
- Always use cables having wires
with an adequate cross-section,
+ Va
considering the cable length and the
total loudspeaker power.
–
- Loudspeaker lines must be kept
Pa > Pd x n
separated from mains cable,
PL80/A -24
microphone cables or others, in order
– Vd = Va +
to avoid inductive phenomena may
cause hum or noises.
3
- Use loudspeaker cables having
twisted wires to reduce hum caused
by inductive effects due to coupling
with electromagnetic
186 fields.
244
65
– Vd = Va +
– Vd = Va +
266
7
INSTALLATION 100
NOTES
PL 8X - 26
8
224
247
1. Drill a hole with a diameter of 164 (±2) mm in the ceiling in the exact spot
PL 81/A
- 27
selected
for installation.
2. Connect the loudspeaker (read the next manual section).
3. The loudspeaker has
3 2 spring clamps (picture A) for fixing without using
tools. Push hard the 2 spring clamps up (and keep them in position), at the
same time insert the loudspeaker into the ceiling hole (picture B).
4. Release the 2 spring clamps (note: pay attention to your fingers!) to let the
244 be lifted and fixed to the ceiling (picture C).266
loudspeaker
88
112
PL 70BS - 29
DS 313/WT - 30
16
12
200
230
156
127
189
73
DM 41 - 32
DM 61 - 33
200
150
4
289
197
115
130
177
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RCF products are continually improved. All specifications are therefore subject to change without notice.
216