Idk what you can buy the dd for or xfl for in sweeden but both should perform well ..id say the xfl will be alot cheaper and has been proven solid and able to take well above rms for years
I ran a set of the 608 redlines, I was very impressed with them, in a ported box at 30hrtz. Their performance belied their size. I had them on a saz1500v3 at 1ohm.
Thays what I was thinking. Cause could of swore I just looked at sq site few months ago and that motor weight was around 500 oz. Unless they made some upgrades.
I run 2 redline 615's, not bad at all for their low rms requirements and I have never pushed them past RMS so I can't say anything on that. I can say on 500 rms each these things are trashing my Yukon....