JBL 4312M II 日本版木紋色 Studio Monitor 喇叭,監聽級三音路,書架型,靚仔,99%新,100% Work
機頂有小小花,新淨,99%新,有單,有Manual,用左半年,仲有半年有償保養(天倫影音),無盒,原價$5999。
只在鑽石山 MTR 交收。
尺寸與上一代的4312M相同,但效率更為提升,從原本的89dB變為90dB,阻抗從4歐姆變為6甌姆。低音單體為133mm的純紙盆製品搭配上鋁製外框,並使用強化磁鐵。中音單體亦為50mm的純紙盆製品,高音單體大小為19mm,加入了鈦元素的應用,表面並處理為金色。分音器為一階分音(-6dB/oct)設計。
各方面的改良除了讓4312M II更容易驅動外,頻率響應從60Hz~40kHz擴大為55Hz~50kHz。4312M II依然有中、高音音量調整的功能,方便用家針對不同的環境進行調整,箱體的結構也重新進行調整,除了容積更大外,更為堅固,箱音也進一步減少。
Audio Specifications
Low-Frequency Transducer 133mm (5-1/4") white pure pulp cone driver with pleated cloth surround
Midrange Transducer 50mm (2") pure pulp cone driver with pleated cloth surround
High-Frequency Transducer 19mm (3/4") tempered pure titanium dome
Maximum Recommended Amplifier Power 75 W
Frequency Response 55Hz - 50kHz (-6dB)
Nominal Impedance 6 ohms
Sensitivity (2.83V @1m) 90 dB
Crossover Frequencies 7kHz, 12kHz
Controls Attenuators for MF and HF drivers
General Specifications
Finish Walnut lacquer veneer
Grille Color Monitor Blue
Dimensions (H x W x D – Metric, English) 300mm x 181mm x 180mm
Weight (Metric, English) 4.0 kg