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Sony 4" Woofer 1-544-237-21

Published 16 February 2019

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Unofficial description of the Sony 4" woofer used in many personal Hi-fi systems. This particular part came from a Sony Speaker model SS-H311. This page contains photos and measurements taken on the part. No responsibility is taken for any claims made about the performance of this product.

Sony 4 inch woofer model 1-544-237-21

This Sony 4" woofer is manufactured in Singapore and is rated at 6Ω, f(s)=77Hz. This speaker was installed in the Sony 2-way loudspeaker model SS-H311. Modelling suggests that a tuned vented box could satisfactorily play down to 50Hz, however the practical usable frequency range may more likely be 100Hz to 1,500Hz. This may be suitable in a mass manufactured small-box midi-Hifi system. However, our labs will normally use woofers of a different profile in our experimental loudspeakers.

Visual Description

Sony 100mm (4 inch) woofer 1-544-237-21 top view
top view
Sony 100mm (4 inch) woofer 1-544-237-21 side top view
top view
Sony 100mm (4 inch) woofer 1-544-237-21 rear face view
rear face view
Sony 100mm (4 inch) woofer 1-544-237-21 side view
side view showing magnet
Sony 100mm (4 inch) woofer 1-544-237-21 printed details
rear panel showing product details
Sony 100mm (4 inch) woofer 1-544-237-21 measured response
driver measurement

Parts description

Sony SS-H311 2-way loudspeaker

Sony SS-H311
Loudspeaker

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