Refresh yourself 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 28342 28679 (Hiroki Aso)
Maintenance information: 2023.3.27 Maintained (full exterior paint, exterior repair, terminal board gap correction plate adjustment paint, saran frame repair, reinforcement paint, net replacement, woofer maintenance (cone paper paint, edge dump agent application, frame polish), mid maintenance (frame polish, cone paper paint), tweeter maintenance (new sponge ring installation, center cap repair, cone paper coating), unit detachment) internal connection (New terminal (FASTON) replacement ATT replacement frequency characteristic measurement check (~ approx. 42 kHz), continue using the original capacitor for good results, input/output waveform and balance confirmation sound 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 middle 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