DIATONE DS-25B speaker 10" no cover

call / tex 09297558119 actual demo: https://www.youtube.com/watch?v=kW23ZO86JTY https://www.youtube.com/watch?v=Y4OBgymz1MM https://www.youtube.com/watch?v=5Lg2u32XXos https://www.youtube.com/watch?v=cQkSZ_DiiWI -1976 release so 46 yrs old already but still "MAGANDA TUMONOG" - tweeter a concave type dust cap -deep scratch at top, edge , ding in the corner please check picture but still presentable at front - cosmetic 7 over 10 - NO COVER PANEL di mo na kailangan mas maganda wala, dama ang sound -Still all original all parts -maganda tumunog crispy sound deep bass in low volume , any genre can play -Hindi pede sa maselan pero Maganda na ka kakalinis ko , kung sa tunog ang pag uusapan kakaiba panalo ka dito, gagamitin mo na lang I CONSIDER it FOR AUDIOPHILE, KASI MALINIS NA TUNOG pede sa sweet spot -tested too to TUBE amplifier WHICH IS easily TO drive a 90db ba naman A die-casting frame with a weight of about 1kg which made wall thickness thick enough is adopted as a Woofer. Resolution was raised except for the natural frequency of a frame. Moreover, a voice coil is equipped with the dumpling made of the special synthetic rubber, a mechanical filter is worked, and the high region characteristic is improved. The inside sound omission is prevented. In order to make internal reverberation small and to abolish the heterogeneity of reverberation time, the sub-frame which prepared the orifice in the chamber was attached to the chamber of a tweeter, and sound braking is applied to it. Moreover, the effective oscillating radius of the corn was 2cm, and the diaphragm made from titanium which was excellent in composition is adopted as a center cap. In an edgeless cabinet, a spread of directional characteristics and sound and the normal position are improved. Moreover, a reinforcement is distributed unevenly and vibration mode is decentralized. Resonance phenomena are prevented. 2 way 2 speaker bass-reflex system and a book shelf type woofer: 25cm cone type tweeter: 5cm cone type Nominal impedance: 6ohms frequency band: 45Hz - 20000Hz Crossover frequency: 1500Hz Output sound pressure level 90dB/W The maximum input: 60W Level control: Three positions (1500Hz - 20000Hz) Dimensions: WHD- 320 x 570 x 292mm Weight: 13.5kg came & made in Japan DIATONE was mainly sold in Japan and it was considered a loudspeaker specialist however several MITSUBISHI audio components were sold in Japan under the DIATONE brand name. look ed muntinlupa city