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Old 10-24-2019, 04:10 PM
wrtner wrtner is offline
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Join Date: Oct 2008
Posts: 950
What about this item? One pcb with an unfamiliar look and two transducers:

https://www.ebay.co.uk/itm/2X-50W-40...AAAOSwrFxbbP8L

Putting 13913887466 100W into Google Images gets a number of circuit diagrams which may or may not be correct - to enable the circuit to be tuned.
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