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Subwoofer Choice

I am in the process of building out my system. I have the end goal in mind, and ticking off the equipment as I get them. I do need some advice in the subwoofer category.

I am currently driving Monitor Audio Silver 500s with a Michi X5 integrated amp (600w @ 4Ohms RMS). This is way overkill for these speakers. But my purchase (coming in August) will be the Focal Sopra No. 3s.

That being said, I am looking also to add a subwoofer and I’ve settled between two (2) REL T/9x’s or one (1) REL S/510. T/9X is $1,249 vs S/510 at $2,749.

There is a REL youtube video from their chief designer comparing (briefly) the two and actually stating that "just because one S/510 costs twice as much as 2 T/9x don’t think you can equate them with 2 vs 1". I paraphrased a bit.

But the below is only 3min long please watch and let me know!

What are your thoughts. Obviously 2 subs are better balanced than 1, I get that. But given the specs here am I better at buying up for the better 10"?

Listening room is carpet, 16’ x 24’. 384sqft. 8ft ceilings. What info did I leave out?

 

bound4h
pootytang127
8 posts
 

Monoprice monolith.Don’t sleep on them.

kraftwerkturbo
310 posts
 

Just guts feeling: size matters. Even if 2x xx diameter might have the same surface area (or moved air volume) than 1x yy (or to show my point, 20x 5 inch woofers same as (haven't done the math) 1x 18" woofer), I just don't think a bunch of 5" can naturally produce the 50 Hz and below (down to 20) that an 18" can. Therefor IMO, 1 big is better than 2 small.  

This is coming from years of listening to towers with sidefiring 10", plus 2 active 12". Then I got my first REAL SUB (in a humongous vented box, driven by an ICE sub amp), and the world changed. I ran the towers as 'small' speakers in my 5.1 system, and now the tiny (5x80W) receiver sounded SO much better. 

I am now using an 18" in a sealed 4.5ft3 enclosure, driven by the same B&O ICE design amp. Just LOVE it. Once you heard real SUB (the stuff "down there") there is no going back. My Nautilus 804 are said to have great lows. And they do. But so much better if aided by the 18 incher. 

 

cfa88's avatar
Ag insider logo xs@2x
cfa88
98 posts
 

@bound4h Congrats on the S/812 purchase, Bassline Blue high level connection is an upgrade from stock cable.

hartf36's avatar
hartf36
200 posts
 

+1 for looking at Rythmik.  Several years ago I went with the servo-controlled, sealed F12G with the paper driver for the speed/musicality components listed above.  It marries seamlessly with my Magnepan MMGs when dialed in properly.  I think anyone looking for a sub is doing themselves a disservice by not looking at the Rythmik line.  

bound4h OP
25 posts
 

@james633 

No, unfortunately the Michi X5 does not contain any sort of crossover controls but does allow for some simple tone controls (treble, bass and that's it).  Not sure if those controls apply to the high level outs only?  

So, as a more general question, is it true that because i have an integrated that I cannot use a separate crossover at all?  I believe yes is this answer, but wasn't sure if your comment was in response to the CR-1 specifically.

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