Older vs. newer REL subs


Looking for any reports about older vs. newer REL subs.

I have a REL 328 (ca. 2013) which I bought used. It's a good sub.

https://www.hifiplus.com/articles/rel-r-328-subwoofer/

I would like to upgrade to stereo subs and I've found (finally) another REL 328 which would match mine. But, before I drop coin on that, I'm wondering if anyone has had experience comparing their older REL with a newer one. What's changed? What's better, worse, or the same? I'm considering the T7x and T9x lines.

Hoping for apples to apples comparisons, vis a vis driver size, type of sub (e.g. level of product line, sealed vs. ported, music vs. HT etc.) but whatever old vs. newer comparison you have much appreciated. 

Thanks.
hilde45

Showing 1 response by gsdye

I'm torn on what to upgrade with.

One of my R218's broke and I haven't had much luck fixing or finding a 2nd used one.  In my haste I bought two T5x and for 2 channel music and it's pretty good and is satisfying enough.  I compared it to my one working R218 and the R218 definitely hits harder.  Not trying to chase bass for music hence going with the T5x pair (for cost and enough dynamics)

I decide to hook up the R218 for my centre channel after seeing a Youtube on Rel 3D.  WOW!  

One thing I miss is having more HT impact so I'm on the lookout for a pair of S3 SHO (22Hz) which on paper hit lower than the R218 pair (25Hz).  The T5x  can be used for the rear surrounds or in another system.    The new  S/510 (20Hz) is just out of my price range.  The T9x (27Hz) may not be enough.