Kolumny:

Quad ESL 57

Dane techniczne:

• Country:  Great Britain (UK)
• Manufacturer / Brand:  Acoustical Manufacturing Co. Ltd, The; Huntingdon
• Brand Quad
• Year: 1956–1981 perfect model Category: Loudspeaker, headphone or earphone
• Wave bands - without
• Details
• Power type and voltage Alternating Current supply (AC) / 220 Volt
• Loudspeaker Electrostatic Loudspeaker (high bias DC voltage)
• Power out 15 W (unknown quality)
• Material Various materials
• Shape Console, Lowboy (legs < 50 %).
• Dimensions (WHD) 867 x 787 x 266 mm / 34.1 x 31 x 10.5 inch
• Notes
• The Quad ESL 57 was manufactured for a long period because it was not easy surpassed for real quality sound. 93 dB/Wm. Impedance 15-30 ohms, frequency response 40 - 20 000 Hz (other source tells 45 - 18 000 Hz). Max. 33 Volts. Built-in DC-supply for polarization. The follower was ESL 63, followed by ESL-989. "Quad" is still producing and offers a homepage: quad-hifi.co.uk
• Price given is for 1967/68.
• Net weight (2.2 lb = 1 kg) 17.7 kg / 38 lb 15.8 oz (38.987 lb)

Stan:

- wizualny: patrz sekcja zdjęć;

- techniczny: Uszkodzone.

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