Refresh yourself with internal and external maintenance! The JBL 4311A was developed as a monitor speaker for studios, etc. I would definitely recommend this system to customers who listen to jazz and rock, with good overall sound tightness and good low frequencies. The exterior is generally clean due to maintenance. Serial 16391 16373 (Asaina Satoshi method)
Maintenance information: 2023.9.14 Maintained (full exterior paint, exterior repair, plate repair paint, screw holder repair, saran frame repair/painting/net replacement, all units, corn paper coating, ATT cleaning unit, detachable network maintenance, frequency characteristics and sound output check)
Accessories: Saran net
Main specifications: 3 way, 3 speaker, bass reflex system, bookshelf type, frequency characteristics, 45 Hz to 15 kHz, allowable input 40 W (RMS), 8 ohms, crossover frequency 1.5 kHz, 6 kHz, output sound pressure level 91 dB, dimensions W362 x H597 x D298 mm, weight 19 kg