Helmet speakers

[vwboomer]

I ordered these

Code Select Expand

http://cgi.ebay.com/ebaymotors/Iasus-XSound-2-Motorcycle-ATV-Helmet-Speakers-HS24_W0QQcmdZViewItemQQcategoryZ6749QQihZ012QQitemZ220248650238QQrdZ1QQsspagenameZWDVW


They work well, sound decent. The problem is after less than an hour my ears were killing me. Too much pressure. I don't want to cut out the inside of my helmet to fit them. With one in I think it would be ok, but what do I do with the other?
Would it be ok to notch out the plastic inside the helmet to get 1 of them to recess more?

Tomorrow I"m going 250 miles and need my GPS. The day after I'm going another 400-600 so I definitely need them. Just dont want to velcro the spare speaker to the back of my helmet