Read JBL J 820M (serv.man2) User Guide / Operation Manual online
J SERIES LOUDSPEAKERS
7
Specifications
J Center
J50
J520M
J620M
Application
Center Bookshelf
Bookshelf
Bookshelf
Channel
High Frequency
10mm Ti
2" Paper
10mm Ti
10mm Ti
Dome Transducer
Composite
(Cone)
Composite
Composite
Midrange Transducer
n/a
n/a
n/a
n/a
(Nitrile Polymer Fibre Cone)
Low Frequency Transducer
2 x 3.5"
5"
5"
6
1
⁄
2
"
(Nitrile Polymer Fibre Cone)
(Neo Magnet)
Crossover Frequency
4.5kHz
2.2kHz
4.5kHz
4.5kHz
Frequency
80 Hz to
75 Hz to
70 Hz to
55 Hz to
Response (– 6 dB)
20 kHz
20 kHz
20 kHz
20 kHz
Sensitivity (1 Watt/1 Meter)
87 dB
86 dB
87 dB
88 dB
Nominal Impedance
8 ohms
8 ohms
8 ohms
8 ohms
Recommended
10 to 80
10 to 50
10 to 75
10 to 100
Amplifier Power*
Watts
Watts
Watts
Watts
External Dimensions
Height 5
Height 5
3
⁄
16
"
11"
12"
15"
Width
14
1
⁄
4
"
6
1
⁄
2
"
7
1
⁄
2
"
8
1
⁄
2
"
Depth
6
5
⁄
8
"
7
1
⁄
4
"
8
1
⁄
2
"
10"
External Dimensions
Height
Height
132 mm
280 mm
305 mm
381 mm
Width
362 mm
165 mm
190 mm
216 mm
Depth
168 mm
184 mm
216 mm
254 mm
Weight (each)
7 lbs
7 lbs
8 lbs
12 lbs
3.2 kg
3.2 kg
3.6 kg
5.5 kg
Shipping Weight
10 lbs
18 lbs
20 lbs
28 lbs
4.5 kg
8.2 kg
9.1 kg
12.7 kg
*The maximum recommended amplifier power rating will insure proper system headroom to allow
for occasional program peaks. We do not recommend sustained operation at these maximum
power Levels.
power Levels.
J Series OM 7/28/98 10:20 AM Page 7
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