Older vs. newer REL subs

Neither my original Q150e or the Q108MK2 have managed to "shake themselves apart" and are unlikely to do so since I check and tighten the screws once in a while...highly recommended. It’s more likely some cap will get funky or something, but these things are built to last...at least so far anyway. I can't imagine any newer sub being "faster" as that term is meaningless to me and seems more of a lazy audio catchphrase, especially with a sub.

@wolf_garcia  Thanks. I'll check my springs (and my neck bolt, while I'm at it).

Others here -- same experience? Subs don't have any issues due to vibration over time? Good to confirm, especially if I'm looking at a used sub.

There's a Q150e like the one I own (and the other one I just bought) on Ebay currently...I can enthusiastically recommend it. (no connection to seller, I simply noticed it)

@wolf_garcia wolf_garcia
"...The bad news is that REL won’t service them. If one dies I would try to find somebody to fix it,..."

Good point to bring up for others to see.  This is the problem with buying older -2 prior generation used subs, and when the factory no longer stocks the replacement boards, amps, parts, drivers any more. It becomes a best effort self-fix situation.   Helped many friends rip out stock amps and drivers to replace with generic Dayton 250/500 amps and other drivers to keep them going. Got two DA 500s sitting her right now in fact.    So what's left, a cabinet? Rather build a new Rythmik or Dayton kit sub with a good driver than buy a 5+ year old factory sub that you can't get parts for any more because they've moved on to different designs. Just something else to be aware of when buying used vs. new subs.  And they DO rattle themselves apart after 5 years, and less so when when used more sparingly.  They want you to buy the new model when it happens, fwiw.   

"I'm not in the market to buy two $2500 subs to replace a single older $2k sub; I would entertain two newer $1500 subs, however" .......you can buy the S510 for 2 grand brand new delivered...if you would buy (2)1500.00 subs and not entertain (2)2000 subs which are much much better your wasting everyone's time here with this post as thats just stooopid