Specifications MR28 MR38 MR308II MR310II
Application Bookshelf Bookshelf Tower Tower
High Frequency 14mm" Ti 14mm Ti 14mm Ti 14mm Ti 14mm Ti
Dome Transducer Composite Composite Composite Composite
Midrange Transducer n/a 6
1
⁄2"6
1
⁄2"6
1
⁄2"
(Nitrile Polymer Fibre Cone)
Low Frequency Transducer 8" 8" 8" 10"
(Nitrile Polymer Fibre Cone)
Crossover Frequency 3.5kHz 3.5kHz 3.5kHz 3.5kHz
Frequency 50 Hz to 45 Hz to 42 Hz to 40 Hz to
Response (– 6 dB) 20 kHz 20 kHz 20 kHz 20 kHz
Sensitivity (1 Watt/1 Meter) 90 dB 92 dB 92 dB 92 dB
Nominal Impedance 8 ohms 8 ohms 8 ohms 8 ohms
Recommended 10 to 125 10 to 150 10 to 150 10 to 175
Amplifier Power* Watts Watts Watts Watts
External Dimensions
Height 19
1
⁄4" 24" 32
3
⁄16" 36"
Width 10" 10" 10" 11
3
⁄4"
Depth 10" 12" 12" 12"
External Dimensions
Height 489 mm 610 mm 818mm 915 mm
Width 254 mm 254 mm 254 mm 298 mm
Depth 254 mm 305 mm 305 mm 305 mm
Weight (each) 18 lbs 25 lbs 28 lbs 32 lbs
8.2 kg 11.3 kg 12.7 kg 14.5 kg
Shipping Weight 40 lbs 29 lbs 32 lbs 36 lbs
18.2 kg 13.2 kg 14.5 kg 16.4 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.
JBL continually strives to improve its products. New materials, production methods and design refinements are
introduced into existing models without notice as a routine expression of our design philosophy. For this reason,
JBL MR Series Loudspeakers may differ in some respect from their published specifications and descriptions, but
will always equal or exceed the original specifications unless otherwise stated.
250 Crossways Park Drive, Woodbury, NY 11797
8500 Balboa Blvd., Northridge, CA 91329
A Harman International Company
Part No. 332408-001
Printed in Taiwan
MR SERIES LOUDSPEAKERS
MR Series OM 7/28/98 10:32 AM Page 8