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 don't think OP started this discussion for you guys to come in and bash his system or his choice of equipment, or for you to argue with each other.  Really, this forum has become such a slug-fest it's unbelievable!  If some of you actually knew as much as you think you know, you could save the world!  You even have him believing that you know more than the engineers and designers at REL, who designed these subs!

OP has nice equipment!  His choice of Mac is great, and it's not underpowered.  75 tube watts from a Mac is a lot of power.  They use excellent transformers and excellent design.  They will power those 86db speakers just fine.  The RELs are good subs.  No, they don't go to 10 Hz, but neither does the music!  

Sure, a new amp, 4 big subs (or is it 5 now, MC?), new, more efficient speakers, and tweaky fuses, cones and power cords would make it sound different (not necessarily better).  But, that's not what he asked.  His question for you guys was whether or not he will see improvement by adding the RELs to his system.  He isn't living in an anechoic chamber, and isn't looking for perfect, world class sound, and he isn't building a studio or trying to spend tens of thousands of dollars!

The answer to the question, @ricmci is YES!  It will definitely improve things for you, and I think you have already discovered that.  IME the RELs are very musical.  They integrate very well with your speakers if you take your time in tuning them, and I recommend following the OE instructions to connect using the high inputs.  Are they the best available?  No.  Are they junk?  Far from it.  In my case, I have Primaluna HP Integrated with Revel F208 speakers and a pair of REL t/9i subs.  The SQ is fantastic!  

Some of the forum regulars need to grow up.  It's like OP came in asking if he should paint the walls blue.  And, then this group gets hold of him and tries to convince him blue is wrong, and he should move walls, raise the roof, and move to Colorado where the power grid is more reliable.  If he's happy with what he's got, then let him be happy!  He is taking a journey, as we all are.  Instead of encouraging his walk up the hill, you want him to go to the moon.  Sheesh.
You have a point Sounder. Just pointing out cheaper and better options.
Chaz, it’s not fake news. Try listening to a simple acoustic recording then a complicated classical piece and see which seems more detailed.
Tweak, any quality sub can be integrated into a system if setup correctly.
any quality sub can be integrated into a system if setup correctly
define integrated

More ≠ Better.

Without multiple slopes, phase, polarity and optimally delay integration will suffer except for a very small subset of mains.

IMO, some units are jewelry aimed at the ignorant. From where they were 20 years ago, REL has definitely moved in that direction. Chrome feet w logo. PuLeease!
rwwear2,722 posts03-27-2020 9:09amChaz, it’s not fake news.
It is fake news.
A single Rel 812 se is -6dbs at 19hz.

https://rel.net/shop/powered-subwoofers/serie-s/s-812/

What REL's do better is reproduce the subtle mid bass sonics and details and integrate that with the mains.
define integrated

Integrated means of one piece, whole. Its a fact. You could look it up. Bass is integrated when its impossible to tell there are subs, or even any speakers at all. Integrated is when the bass is so clean and clear and extended you are enveloped to the point where the walls of the room dissolve and you feel you are within a holographic acoustic space.

This is impossible to achieve with any one sub. The more subs you use the easier this becomes. With four or five subs it is trivially easy. Virtually any four subs located virtually anywhere in the room will get you there. No single sub located anywhere will. Not even two. More is better.

https://systems.audiogon.com/systems/8367

Would be very interested to hear ieales tell us all how many four and five sub setups he has tried, in order to fully evaluate his credibility on the subject.