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RF31-EZ-T Raw Frame Speaker Technical Information for System Engineers
© 2012 SoundTube Entertainment. All rights reserved. RF31-EZ-T REV 03.07.12
Speci�cations: RF31-EZ-T
System Type
Impedance (nominal) 1
Sensitivity dB @ 2.83 V/1 mSensitivity dB @ 1 W/1 m 2
Frequency Response (- 3 dB) 3
Frequency Response (-10 dB) 3
Max. Program Power 4
Max. Continuous Power RMS 5
Max. Power SPL @ 1 m 6
Coverage Angle (-6 dB @ 2 kHz)Coverage Angle (-6 dB @ 10 kHz)Coverage Angle (averaged from 2 to 10 kHz)Directivity Factor (Q) Directivity Index (DI) Transducer - Full-Range DriverLow Frequency Voice CoilTap SelectorEnclosure MaterialGrilleInputsColorsDepthVisible HeightVisible WidthWeightShipping WeightPackaging Included Accessories
Optional Accesories
Regulatory - CERegulatory - ULRoHS
3-inch, full-range, in-wall, raw frame (10 watt transformer with 25-, 70.7-, 100-volt input options)8 ohm 85.0 dB 85.0 dB 170 Hz - 14 kHz 82 Hz - 22 kHz 20 W 10 W 95 dB 180° 50° 120° 4.3 (averaged 100 Hz - 10 kHz); 2.4 (2 kHz) 5.4 (averaged 100 Hz - 10 kHz); 3.8 dB (2 kHz)76.1 mm (3.0 in.) Polypropylene driver with butyl rubber surround19.0 mm (0.75 in.)Five-position terminal block inputABS baf�e ABS bezel with perforated aluminum grilleFive-position terminal blockWhite (paintable grille) 53.6 mm (2.1 in.)120.7 mm (4.8 in.)120.7 mm (4.8 in.)0.9 kg (2.0 lbs.)1.1 kg (2.4 lbs.)One per boxWhite snap-on aluminum grille, paint mask, and four stainless steel mounting screws Black replacement grille (GRL-RF31-BK), theft-resistant stainless steel grille (AC-RF31-TRG)ApprovedUL 1480 (UEAY) approvedApprovedTransformer Taps
Impedance listed per IEC 60268-5 with a minimum less than 80% the nominal impedance
1 W 1 m sensitivity determined using nominal impedance
Frequency response measured in half or full space as dictated by speaker mounting con�guration
Max program power is 3 dB above max continuous power
Continuous power rating, EIA-426-B test
Max output based on max continuous power
1
2
3
4
5
6
70.7 V Output 100 V Output 25 V Output
10 W 95.0 dB 5 W 92.0 dB 2.5 W 89.0 dB 1.3 W 86.0 dB
10 W 95.0 dB 5 W 92.0 dB 2.5 W 89.0 dB
1.3 W 86.0 dB 0.7 W 83.5 dB 0.4 W 81.0 dB 0.2 W 78.0 dB
.
SoundTube Entertainment13720 W. 109th St. Lenexa, KS 66215Phone 913.663.5600 Fax 913.663.3200 Toll Free 800.647.TUBEwww.soundtube.com
All SoundTube products come
with a 5-year limited warranty.
Patented SoundTube Technologies
Technical Data and Speci�cation ToolsTechnical Data
Data Acquisition
Architectural Speci�cations
RF31-EZ-T In-Wall Speaker Technical Information for System Engineers
Raw Frame Speaker
Phase/Impedance ResponseFrequency Response
Vertical Beamwidth (-6 dB) Directivity Index (DI)
Graphs and Plots
RF31-EZ-T In-Wall Speaker Technical Information for System EngineersRaw Frame Speaker
100
1000
1000
020 50 200
500
2000
5000
2000
0
Hertz
0
30
60
90
120
150
180
Deg
rees
Vertical Beamwidth (- 6dB)
-3dB-6dB-9dB
100
1000
1000
020 50 200
500
2000
5000
2000
0
Hertz
-10
-5
0
5
10
15
20
dB
Directivity Index (DI)
100
1000
1000
020 50 200
500
2000
5000
2000
0
Hertz
0
10
20
30
40
50
60
70
80
90
100
110
dBSP
L
Frequency Response
100
1000
1000
020 50 200
500
2000
5000
2000
0
Hertz
0
8
16
24
32
40
48
56
64
Ohm
s
-180
-135
-90
-45
0
45
90
135
180
Phas
e(D
egre
es)
Impedance/PhaseImpedancePhase
SoundTube Entertainment manufactures a complete line of speakers for:
All SoundTube products are designed and engineered in the USA.
Polar Plots HorizontalVertical
10,000 Hz8,000 Hz2,000 Hz
500 Hz250 Hz125 Hz
Technical data, EASE™ plots, SoundTubeSPEC™ software and product downloads available at www.soundtube.com
Mechanical Drawings
116.84 mm(4.60 in.)
116.84 mm(4.60 in.)
53.34 mm(2.10 in.)
120.73 mm(4.75 in.)
120.73 mm(4.75 in.)
RF31-EZ-T In-Wall Speaker Technical Information for System EngineersRaw Frame Speaker
4,000 Hz
1,000 Hz0
30
60
90
120
150
180
210
240
270
300
330
-36
-30
-24
-18
-12
-6
0
1KHz 1/3 OctHoriz PolarVert Polar
0
30
60
90
120
150
180
210
240
270
300
330
-36
-30
-24
-18
-12
-6
0
500Hz 1/3 OctHoriz PolarVert Polar
0
30
60
90
120
150
180
210
240
270
300
330
-36
-30
-24
-18
-12
-6
0
250Hz 1/3 OctHoriz PolarVert Polar
0
30
60
90
120
150
180
210
240
270
300
330
-36
-30
-24
-18
-12
-6
0
125Hz 1/3 OctHoriz PolarVert Polar
0
30
60
90
120
150
180
210
240
270
300
330
-36
-30
-24
-18
-12
-6
0
10KHz 1/3 OctHoriz PolarVert Polar
0
30
60
90
120
150
180
210
240
270
300
330
-36
-30
-24
-18
-12
-6
0
4KHz 1/3 OctHoriz PolarVert Polar
0
30
60
90
120
150
180
210
240
270
300
330
-36
-30
-24
-18
-12
-6
0
2KHz 1/3 OctHoriz PolarVert Polar
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