Brush up with interior and exterior maintenance! JBL's 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 a nice low range. The exterior is generally clean due to maintenance. Serial 28196A 31365A (Asaine Tomonori)
Maintenance information: 2023.1.27 Maintained (all exterior paint exterior cleaning/repair plate cleaning/gloss adjustment paint
Saran Frame Reinforcement Paint Net Replacement All Units Cone Paper Coating Woofer Maintenance (Cleaning/Dump Agent Application Frame Polish) Mid Maintenance (1 Terminal Replacement, Frame Polish) Tweeter Maintenance (New Urethane Ring Creation) Unit Detachable Internal Connection Terminal (FASTON) Brand New Replacement ATT contact cleaning contact grease application frequency characteristic measurement check (~ approx. 42 kHz) was performed, and the original capacitor was continuously used for good results. Input/output waveform and balance confirmation sound output check)
Accessories: saran net
Main specifications: 3-way 3-speaker bass reflex system bookshelf type usage unit/30cm cone type for low range (2213) /13cm cone type for mid range (LE5-2) /3.6cm cone type for high range (LE25) frequency characteristics 45Hz to 15kHz allowable input 40W (RMS) 8Ω crossover frequency 1.5kHz, 6kHz output sound pressure level 91 dB Dimensions W362 x H597 x D298 mm weight 198 mm