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 25123 24283 (Asaine Tomonori)
Maintenance information: 2023.1.27 Maintained (full exterior paint exterior repair, plate deposit peeling, gloss adjustment paint, saran frame repair, paint, net replacement, all units, cone paper coating, woofer maintenance (cleaning/dump agent application, frame polish), mid-maintenance (center cap gap filling, one-side magnetic circuit, rust removal, cleaning center adjustment, 1 terminal replacement, frame polish), tweeter maintenance (urethane (New ring created) Unit detachable internal connection terminal (FASTON) brand new replacement ATT brand new replacement 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