WOW!!! What a difference. I ordered some Tork Xpro speakers from Canada a couple of weeks ago to replace the tinny little originals for my SENA SMH5 helmet comms set. I got around to fitting them today. As I type this I've got my helmet on enjoying some tunes at a much higher quality than the original SENA speakers could ever hope to provide. I can hear bass guitars again and I've got more volume range to play with. I just ordered the speaker elements: Helmet Speakers Pic shows the size difference between the old SMH5 speakers and the new Tork XPro jobbies. The Torks are also about twice as thick as the SENAs and they only just fit in the space of my Bell helmet. Will road test when it cools down a bit.