In this video, we replace the speaker horn diaphragm on the Foster horn. Foster, Fostex H025 and Cerwin Vega H025 models are nearly identical but with a longer shaft.

Speaker diaphragm used in this video:
D-420
https://www.simplyspeakers.com/foster...

Cerwin Vega H025 style diaphragm:
D-420L
https://www.simplyspeakers.com/cerwin...

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