Full maintenance has been completed from unit maintenance and ATT cleaning to exterior repairs! Starting with the 4310, which was manufactured in the 70s, it is a JBL masterpiece monitor speaker that continues to the present day. It has a mid-low range full of energy typical of JBL, and plays jazz and rock well. Using a dome-shaped tweeter molded from pure titanium, it is a speaker that can withstand playback of modern sources (Daiki Goto)
Maintenance information: 2026.4.17 Maintained (exterior repair/polishing/oil finish. Front and rear baffle repair and painting. Saran net replacement/frame repair. Woofer midcone paper coating. ATT wash. (Detachable unit)
Accessories: none
Main specifications: 3-way 3-speaker bass reflex crossover 1.1 kHz, 4.2 kHz impedance 8 Ω output sound pressure level 93 dB W362 x H597 x D298 mm 20 kg