Hello i got new pait of sennheiser hd 439 and i want to do bass mod on them opening only 1 hole,but i would like to know from some1 who did it will this mess up other frequencys? Thanks
Hello i got new pait of sennheiser hd 439 and i want to do bass mod on them opening only 1 hole,but i would like to know from some1 who did it will this mess up other frequencys? Thanks
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