Best €2500 sub purely for music?


I recently was lucky enough to try a demo between a two rel 9tx and one s510, and I though the s510 was vastly superior. My only hesitation for being one was that the EU pricing of rels are kinda steep, and maybe im not someone best suited to use them? To explain, I use a minidsp shd preamp to control my entire system. With that I always use a high-pass filter with a extremely sharp roll off of -48db. Anything above 60hz is given to the speakers. I found this to sound night and day better than trying to cross any speaker with their natural cutoff. This is antithetical to how rel designs their subs. Lastly, it only has phase adjustments of 0 and 180. Its for these reasons why im asking you if there are any alternatives to the s510 you recommend between €2k and €3k IN EUROPE (so no svs or rhythmic or any other US brand of any sort) that might be more appropriate for a purely hifi application?

My speakers are German physiks hrs-130's. They're omnidirectional, but what is important here is they a sealed design that is extremely precise and fast, but its not enough SPL for synthetic music. The lesser rel's arnt as fast as it, so I ask for something equivalent to the s series. I only want one, and my room is 30m^2. I will be using the full Dirac calibration of the shd to integrate it, so subs with on-board dsp is completely irrelevant, and I'd rather not spend on a feature that's useless to me. What other options are available here? 

endymion_joshi-godrez

@ronboco 

My Rockport Avior ii speakers give me all the bass I need in my room. No subs.

Counter-argument -- https://youtu.be/tGeNwgT18bA?t=39

You can reply, "I have a specially designed room."

That may defeat Paul's point -- for your room.

But, most people don't have a specially designed room.

Therefore, they might need subs even if they have full range speakers.

@hilde45 

Good point I did neglect to mention my room which helps negate the need for subs but I stand by my comment that towers can do well below 60hz. 

Regards 

Ron 

Damn, my heel, Mr hilde coming in cluch the facts, too bad he still can’t read. On a serious note, the main point of a sub is so you can high-pass problematic frequenies at the positioning of your speakers in the room. It could well be the best positioning for other frequencies has a bass node. Doing what rel suggests by just blending the two full range is objectively inferior in evey single provable way and from a subjective standpoint, sounds significantly worse from all the Rels I’ve had previously. Get a SHD or anything else that can blend the two flawlessly like JL crossover unit (though, I don’t think you can set it to have anything more than 24db drop off which would still mean its audible at 80hz (-8db) with a 60hz crossover. Thats not acceptable for music).

@hilde45 cool video. Not 100% compelling, doesn't say why you can't have good enough bass from your speakers but pretty convincing that having a sub is better :) 

is attacking people's reading skills some kind of medical condition?

if you are new here: the OP usually asks a question, and then people write whatever they feel, relevant or not. It's not an SAT.