Subwoofer insight.


This is new territory to me. Current speakers are 2 way with frequency response of 60Hz-20KHz with +/- 2dB.  Sensitivity rated as 86dB. Chance to purchase a pair of REL 7 tis. I feel like I am missing something but will have to buy the subs to try out. My basic question is this. Does this purchase sound wise? I know what I am willing to spend but do you think I will notice an appreciable improvement.  I know that no one can listen through my ears but this is my first time doing this. Source is 75 watt integrated tube amp, McIntosh MA-2275. Thoughts appreciated. I am leaning towards going forward with the deal but would appreciate some feedback. Room is large and open, 28X38 feet with 9 foot ceilings. Thanks for any feedback.
ricmci
I'm a REL S5 SHO owner. You can't go wrong with REL as long as you match correctly to your mains and room size. IMO the T series is a bit smallish for your room size. I think a stereo pair of the 812se is probably more what your room size needs. Call REL directly and they will help you match to the right sub in their lineup. 

GLHF!
I had a pair of T7i’s with my Dynaudioo Contour 60’s in a much smaller room. They really expanded the sound stage and the overall sound. Just upgraded to a pair of REL S510’s. Another big jump in SQ and now they really dig deep. I would recommend the 510’s or the 812’s for a room that big. 
When it comes to two channel music, nothing in my opinion rivals REL subs. For your room size, you need to go with a pair of S5 or newer S/812.

I switched from JL audio to REL Carbon Limited and couldn’t be any happier. You can always send an email to REL support and they will reply with best recommendation based on your main speakers.

support@relsupport.zendesk.com
using different speaker taps directly to mains and directly to subs denies a fundamental advantage of self-powered subs. the need for bass comes from the source, the main amp will still be trying to make/send all bass, the main speakers will still be trying to make all bass.

you want to remove low bass signals going to both the main amp and main speakers, especially inefficient and range limited mains, like yours. then they both can do a better job.

preamp out to crossover, or preamp to sub with adjustable crossover, self powered subs,

then signal less low bass back to main amp or integrated amp line in. main amp now doesn’t need to deal with low bass signals. low bass signals no longer seen by inefficient main speakers, those speakers no longer ’try’ to make low bass.

ideally easy ability to adjust sub’s crossover and adjust subs volume. this has to be done while they are in their intended location, again, bass is not always mono, so I advocate a pair of front firing subs near the mains. if hard to access controls, and heavy, put them on low rolling ..., pull out, adjust, slide back in place, listen.

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One of those posts that sounds really technical and plausible... only it just isn’t so. There’s more going on than is dreamt of in your simple techno world, elliott.

In the real world all these extra circuits and wires you need, they all diminish the signal to some extent. Its just a fact. Nobody ever made the perfect component that doesn’t do this and until they do simpler is better.

In the real world the more sources of low bass the better. If you want to get all technical this is one where we can go and the tech and physics are solid as can be. Each woofer creates room bass modes based on its location. The more locations the more modes. The more woofers the less output needed from each one. So the more woofers the smoother the bass. Its been researched and tested and proven. Its science.

Also happens to work in practice. To a lot of us, this means more than any number of high falutin theories. 

So when you filter bass from the stereo pair you aren’t improving you are worsening.

Keeping track, that’s two ways your idea made the system worse. There’s a third.

Money spent on this unnecessary and counterproductive crossover and amp and all is money not spent where it could actually do some good.

About the only time this might be a good idea is in the case of a very low output SET where relieving it of low bass might actually be enough of an improvement to be worth it. Except notice, no one with a SET actually does this. Why? Isn’t this the prime example of when it should be most beneficial?

Except people are drawn to SET and low output in general because they enjoy listening for the truly subtle compelling detail that carries one away with palpable presence. The very same subtle detail all your extra circuits ruins. So the one guys who according to your view really should be advocates want nothing to do with it.

Me neither. https://forum.audiogon.com/users/millercarbon