Sony ss-125 (1983)

Name: Sony ss-125
Brand: Sony

A two-way bookshelf speaker system from Sony’s first high-end audio push, designed to rival American classics.

Overview

The Sony SS-125 is a two-way bookshelf speaker system released in 1983 as part of Sony’s first serious entry into the high-end audio market. Designed to compete with respected American brands like AR, KLH, and Advent, the SS-125 was positioned as Sony’s flagship speaker effort at the time. It features a 20 cm woofer and 7.5 cm tweeter in an acoustic suspension cabinet with a 45° inclined baffle plate, housed in a walnut veneer enclosure with a walnut-finished frame and beige cloth grille.

Specifications

System type	2-way / 2-speaker / bookshelf type
Woofer	20 cm cone type
Tweeter	7.5 cm cone type
Playback frequency band	100 Hz to 16000 Hz
Sensitivity	93dB/W/m
Impedance	8 ohms
Power Handling	50 watts
External dimensions	Width 200 x Height 460 x Depth 355 mm
Weight	7.7kg
Cabinet Material	Walnut veneer
Grille	Walnut-finished frame with beige cloth

Design

The SS-125 uses an acoustic suspension cabinet design with a 45° inclined baffle plate to reduce standing waves and improve imaging. The crossover network incorporates air-core inductors and film capacitors for clean signal transmission.

Context

Sony developed the SS-125 to challenge dominant American speaker brands of the early 1980s, aiming to deliver a balanced, detailed sound that could stand alongside the best from AR, KLH, and Advent. It represented a significant step in Sony’s ambition to be taken seriously in high-fidelity audio.

Market

A recent eBay listing showed a pair selling for $450. Common issues include deteriorating foam surrounds on the woofers and aged capacitors in the crossover network, which may require replacement for optimal performance. Original drivers are difficult to source, making restoration of existing units essential.