4 ETY in different case
Jun 6, 2004 at 12:07 PM Post #61 of 62
er-4 driver inside!

er-4_drv.jpg

er-4_drv2.jpg
 
Sep 30, 2004 at 8:31 PM Post #62 of 62
This is an interesting thread!
Transplant surgery no less
eek.gif

The transducer looks like something from Knowles Electronics, I would guess
a bespoke product?

My own ER4 sonic mods have been strictly of the passive filter type.
No doubt I will have a play with different 'acoustic resistors' when replacement time comes,but I am loathe to replace those robust modules with little pieces of fly away paper...


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