I will be upgrading my sub this month. I will be sending back my ep350 v3 and getting the ep500. For anyone who has done this.. Do you have to send in the speaker you are trading up first or after you get the replacement?

Thanks.

PeachTree 65se, PeachTree D5 and SVS SB1000 - Stereo
M80s, M22s, SVS PB3000