Maintained! YL Acoustics mid-range driver unit. It's an energetic, well-rounded sound typical of YL. Good condition for the model year (Fujisawa Yukishi)
Maintenance information: 2023.8.5 Maintained (magnetic circuit and diaphragm separated and disassembled. Magnetic circuit slit cleaning, rust prevention. Corrected the circular deformation of the coil bobbin. Repair the imperfect part of the diaphragm adhesion, stop the noise. (Make sure there is no scuffing or distortion of the sine wave input)
Accessories: none
Main specifications: Playback frequency band 200-7000 Hz, maximum input, 30 W, 8 ohms, output sound pressure level 102 dB, diameter 110 x D120 mm, 3.30 kg
Driver for YL acoustics mid and low frequencies. Playback is possible from 60Hz. If you combine it with a folding horn such as the MB90, you can expect soft and elongated low-frequency reproduction. The deep sound that cannot be produced by a cone-shaped woofer is attractive. There is dullness appropriate to the age (Yoichi Murakoshi)
Maintenance information: 2022.4.1 sound confirmed
Accessories: None
Main specifications: Frequency band 60 ~ 3000 Hz impedance 16Ω (measured DC value 17.4/17.6Ω) Maximum input 20W approx. 8kg (wooden box)
Midrange driver with unusual band 100-4000Hz You can build an all-horn speaker unique to YL. Appearance is dull and Slight Scratch (Kimiya Miura)
Maintenance Information: 2021.5.17 Operation confirmed
Accessories: original box
Main Specifications: 20W 106dB 100~4,000 Hz 16Ω Recommended Crossover 180Hz or higher Fit Horn MB-90 (150Hz ~) L-200 (300Hz ~) EL-250 ( 400Hz ~) Outside diameter Φ100 × D70mm 1.8 kg