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Strange MP
Posted: Mon Apr 30, 2018 10:16 am
by ohrlund
Is there any non-gimmicky reason to have these holes drilled?
https://www.ebay.com/i/142771701744?rt= ... 2771701744
Re: Strange MP
Posted: Mon Apr 30, 2018 11:41 am
by TubaDude
The holes are the connection point for a contact microphone. There's a black rubber "o" ring inside that holds the contact microphone. They pretty much sucks compared to the barcus berry system.
Re: Strange MP
Posted: Mon Apr 30, 2018 11:49 am
by Doug Elliott
Drill them out and install a spit valve.