Hi Scott
I have a MY14 with the Meridan audio as well, however my gripe is the lack of punch from the sub, now given that its minuscule in size & sits in a swallow recess in the lower tailgate its probably no surprise. I have an Alpine S type sub & matching mono bloc amp I want to fit but I have been told by a few audio installers that I can't.
They say because the LR system is active, external subs & amps won't work, but I'm open to some one who may now more, but anyway, I have had mine to 45 & the middle/high end sound is beautiful, better then the HK system I heard in '13 model, just the sub doesn't really do what a sub should.
But if yours is as bad as you say, maybe a second opinion before heading back to the dealers...or better still take the USB to the dealers and stick in in one of their cars and see if you get the same result.
Cheers
tiddy

