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Pair of Klangfilm Eurodyn class L431 field coil speakers - $5,759 (Fall River)
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The cinema speaker systems type Kl.L431 are a directly successor of the Kl.L430 - both systems were produced in the early 50's.
The Kl.L431 speaker systems are virtually identical to the Kl.L430, differing only the diameter of the bass speaker.
The Kl.L430 systems feature the original 36 cm/14-inch KL401 speakers, while the Kl.L431 system features the original 38 cm/15-inch KL402 speakers.
All speakers are field coil constructions. For operation they need 200V - 220V DC voltage to supply the field coils. The input impedance of the systems is 200 Ohm as usual with old Klangfilm cinema systems.
The speakers will be delivered with a power supply in solid state technology from Klangfilm Austria that delivers 2x 220V DC / 200mA which is sufficient to supply both speaker systems at the same time.
Both speaker systems are in perfect technical and optical condition. They have been overhauled, only the capacitors has been replaced with original Siemens MP type. All remain parts are fully original. The voice coils were inspected, professionally cleaned and centred.
I have tested exactly these speaker systems with an SONY amplifier with output power approx. 2x 20 watts
The low-impedance outputs of the amplifier were connected to the Klangfilm loudspeaker systems through match transformers with 8 ohms / 200 ohms