Little help with REL subwoofers, please?


I'm not especially knowledgeable about subwoofers and I'd appreciate some advice. I've got a pair of Magnepan 1.7i placed in a small (long, rectangular) room. I had a hefty JL sub that shook the house but that I could never fully integrate. On a whim, I switched it out for a pair of the diminutive REL Tzero subs and the sound is vastly better. On some music, though, such as classical organ, I miss the growl and thunder. I don't feel like I need to boost the "upper bass" and I definitely don't want to muddy things up; it's really the deep rumble that I occasionally want.

If it helps, I'm thinking of a piece of music like Max Richter's "On the Nature of Daylight," which about halfway through delivers a broad, deep sweep of musical sound that I want to *feel.*

I'm mostly pleased with the setup and I don't want to reinvent my room's wheel or break the bank. And I'd like to stay with at least two subs and likely stay with REL. So I'm thinking I might: 1) add a T/9X or maybe a T/7X and perhaps keep the crossover low; or 2) swap out the Tzeros and replace them with a pair of T/7Xs. For now, a pair of T/9Xs is a budgetary stretch that I'd like to avoid (and it is a small room).

Would it be weird having two Tzeros combined with the much bigger T/9X? Would the T/7X produce that deep, enveloping bass? I'm not particularly good at reading specs but -6dB at 30Hz doesn't sound especially deep to me. (The JL was -3dB at 23Hz.) Or am I misunderstanding how bass works and would a T/7X go plenty deep in a small room?

Thanks and Happy New Year!

 

northman

Your post made me laugh because I have the exact same issue with the exact same track!  On the Nature of Daylight is one of my favorite test tracks along with Final Ascent from Hans Zimmer's No Time to Die soundtrack.  Right at 1:45 on Nature of Daylight, a wonderful deep musical bass comes in that you can feel in your bones. It's so so good.

I was using a Rel T/7X with my Dynaudio Confidence 50's, but on the recommendation of several people, I switched to dual Dynaudio Sub 6's which have presets that integrate perfectly with Confidence 50's.  Everything sounded much better except for On the Nature of Daylight. I tried a lot of tweaks including placement, boosting the volume on the subs, changing crossover frequency etc. Nothing worked. On a whim, I added back in the T/7X, and that same 'feeling' was back. I have both dials on the back of the T/7X set pretty low (in the 9 or 10 oclock position). I don't know why I didn't try it sooner - I guess I thought dual subs would be enough. But running the T/7X along with the dual Sub 6's makes such a difference to me that I'm going to keep it in the system. I might upgrade the T/7X down the line to a carbon special or No.31 but for now, I'm enjoying it.

For context my setup:
Electronics: Burmester 911 MK3/ 088 preamp/ 151 MK2 Musiccenter/ 948 pc/ Lyngdorf TDAI-3400.
Speakers: Dynaudio Confidence 50 with dual Sub 6's (and now the Rel T/7X)
Room: approx 240 sf

@jeenam -- Great stuff. A few others have also recommended Rythmik subs. I'm going to take a look and, ideally, a listen. It means opening the search up rather than narrowing it down, but that's a good thing (until it's not). Thank you.

@ronboco and @drlou77 -- thank you both. The S series could be just the ticket but it's quite a bit more expensive. I imagine it's brilliant.

@sslbun -- I loved your (first!) post. That Richter track is one of my favorites as well, and that moment when the bass comes in always makes me smile. It's something that needs to be felt. You have a major-league system and I appreciate that you stayed with the challenge until you got it right. I bet it sounds AMAZING.

@northman 

REL was having a sale on the S/510 when I bought it.  I think it was $2,200 plus 0% financing until 1/25.  The T/9x is $1,500.  I'm not trying to spend your money, but I got a great deal and a sub that's just perfect in my system.

Good luck.0

I have 2 T/9x's and believe in matched stereo pairs or quads for 2 channel systems.

In your case, I'd get 2 T/7s if you can't swing 2 T/9's.

@northman 

The MiniDSP uses Dirac Live which is pretty idiot proof. The SHD is their full function preamp but the DACs are substandard. The SHD Studio is the same unit without DACs. Two Benchmark DACs and you are in business big time. The improvement in your systems performance will be nothing less than stunning.