What sub under a grand?


Looking to replace my rel t1 which is having problems. My current setup is Parasound a21 amp and the Parasound p5 pre amp,Marantz sr 5007 avr and the Marantz sa8001 sacd. Main speakers Vienna Acoustics Mozart grand. 70% is for music and 30% movies, gaming and tv.
jughead
Wolfie is telling his bullshit again. When you compare
subwoofers in timing and speed there are clear differences.
The subwoofers with a faster response, better amps and better
magnets can be used to a much higher freq. response against
those who are slower and are less controlled.

Wolfie is using a more than 10 years old Rel Q150 subwoofer.
When it came out, It was a very nice subwoofer. I sold a lot
of them. ( I prefer closed subwoofers with frontfiring) But we
are now living in 2014. The quality has changed a lot. There
are now different rules and possibilities compared to the
past.
A subs job is to go BOOM! right? iv'e only owned 2 subs the rel and a b&w, and with the b&w sub I never noticed any lag. In fact I had it in a spot that was outta sight and others would compliment my main speakers on having such good bass response, they didn't know I had a sub in the mix. as long as i'm running low pass and start at 80hz threw my pre amp I think it'll blend in just fine.
Speakers and subs can function and sound differently of course, but "timing" and "speed" are useless terms often used by technically challenged gasbags like Bo, who seems to lack the ability or actual knowledge to explain himself. I'm not sure what Bo means by his use of the term "speed" in the context of subs having a "higher frequency response", and I seriously doubt anybody else understands him either...subs shouldn't generally be required to produce a midrange frequency response as that can lead to phase and other issues (and generally sounds like crap), and is absolutely not necessary in the real world to reproduce musical low frequencies to blend with most "main" speakers...My little REL works perfectly reproducing the frequencies I require of it (when it doesn't I'll replace it), happens to be as technically modern as pretty much anything new (according to what I've heard from newer designs in various systems as well as in shops like nearby Goodwin's, as well as comments from some of their sales dudes who do have some expertise from years of selling sophisticated gear), and all sorts of "paper" cone drivers are utilized in newer speaker designs that sound fabulous, although perhaps not in Bo's seriously narrow little world.
I should have the psa sub today,and i'm sure it'll give me what I need "speed, timing" and everything in between.I think for ht it'll give me that thunder i'm looking for, and that punch i'm looking for in music to make it sound live and alive.tell you what I think this pm wolf, though it may take a few days to get it set up. and of course so called breakin?
Jughead, subs do a lot more than just go boom. Really good subs can be crossed over very high as long as they are integrated well. They can add unbelievable stage depth and realism. Gun shots in movies can have a startling effect and really fill the room. The timing of the high passed sub relative to the front mains is critical. So moving subs around the room,setting delays, eq,s, room correction all have a huge impact on frequency in the room which will in effect have a big impact on imaging. Bone crushing bass can start as high as 200hz and it's obvious Bo has played with these higher frequencies and room correction.
The other thing a good sub can do which is very important is take the load off your amp. 80hz is still a good load for most amps and speakers. IMO, sealed subs are the way to go.