Originally Posted by Of sound mind
finding it very easy to go over budget
Welcome to AVS; that's how it works.
In another question I asked , someone suggested I upgrade my subwoofer
Pretty common advice, especially for HT applications.
I have read those with smaller drivers have a quicker response better for fast music classical
Subwoofer speed is not determined solely by driver size, it's also how it's engineered. Ported vs. sealed is another concern.
As for subs and classical music, to be honest, generally speaking classical music doesn't really tax a subwoofer a lot, with one major exception: organ music. If you listen to a lot of organ music and want to really feel it, a good big sub is great. I listen to a fair amount of classical but I don't like organ music, so other than a few odd pieces (1812 Overture), the sub doesn't get involved much.
I've read that buying two subs and hooking them up to right and left stereo will increase imaging
Unless your mains are really small and you're making the sub do a lot of work over 100Hz, not so much. The main reasons for going to a multiple-sub configuration are total output level and room issues; some rooms have nulls such that a single sub can't really get the whole room adequately.
And then I read that hooking them up right in the stereo can be very confusing and hard to do
Depends on your AVR. Most recent AVRs have more than one sub out, so it's a snap.
So what are the rules?
Come on, it's AVS. There's only one rule: more is better!
Is there a price range equals quality? Like low-quality being between $200 and $300 and then the next class being between $300 and $700 ???
Generally speaking, around here, there's very little love for most subwoofers under $400. $400 is where you hit the entry-level Hsu and the RSL Speedwoofer and the Emotiva S12. The only exception to the $400 point is probably the smaller Emotivas, the S8 and the S10. The S8 is really more of a small-room solution and really only a little below 30Hz so not ideal for HT.
Is it better to have two $400 subs than one $800 ?
Opinions vary widely on this so I won't even attempt to be definitive. I think a lot of people will agree that it depends a lot on your room. If there's a good spot in the room where you can put the sub that doesn't result in any nulls near your listening position, probably one $800 sub will be better—you'll almost certainly get better bass extension from an $800 sub than any $400 sub.
I started this journey a month ago with buying two Klipsch rp280f speakers . I am 47 years old and I had never experienced stereo imaging before . It blew me away and started and addiction.
Yep. It's like crack, particularly in the rate that it will drain your bank account.
I would like to stay somewhere around $800 for the subs or sub
Depends on your room and what your placement options are. Personally, I'd buy something in the $800 range and see whether you can get good coverage for your listening position, and if so, just stay with it. Hsu VTF-3.5 and Rythmik LVX12 and SVS PB-2000 are probably the most recommended at that price point here. I'd probably go with the Rythmik because I like the idea of the servo, but that's just me.