Braun L 530 (c. 1976)

A 3-way sealed bookshelf speaker from Braun's 30-series. It has a soft dome midrange, a soft dome tweeter and a 17.5 cm woofer developed with Dr. Kurt Mueller.

Overview

The Braun L 530 is a 3-way, 3-speaker bookshelf system in Braun's 30-series. The enclosure is airtight (sealed). The woofer is a 17.5 cm cone with a rubber surround, developed with speaker engineer Dr. Kurt Mueller. The midrange is a 5 cm soft dome and the tweeter is a 1.9 cm soft dome. Both have Terylene diaphragms coated in liquid rubber, and both are hand-manufactured for precision. Each driver is mounted independently to keep vibration from passing between them. The front has a removable silver-anodized aluminum grille. It came in walnut and white, and the L 530 was sold individually at ¥68,000 around 1976.

Specifications

Woofer	17.5 cm cone type
Midrange	5 cm soft dome type
Tweeter	1.9 cm soft dome type
Frequency response	35 Hz to 25 kHz
Rated power	35W
Maximum power	70W
Impedance	4 Ω
Crossover frequencies	500 Hz, 4 kHz, 12dB/oct.
Internal volume	8.5 liters
External dimensions	225 mm (W) x 345 mm (H) x 180 mm (D)
Weight	6.4 kg

Design

The L 530 has a hermetically sealed enclosure, and the drivers are mounted independently to reduce vibration interference. The 17.5 cm woofer has a rubber surround and was co-developed with Dr. Kurt Mueller. The 5 cm midrange and 1.9 cm tweeter use Terylene (polyester) diaphragms with a liquid rubber coating, hand-manufactured for consistency. The front has a removable silver-anodized aluminum grille. The cabinet comes in walnut and white.

Product Family

The L 530 belongs to Braun's 30-series speaker line. Variants are the Braun L 530 F and the Braun L 530 S.

Market

The known problem with the L 530 is the foam speaker surrounds, which deteriorate over time. They often need re-foaming to restore performance.

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