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Sub to complement KEF LS50s: SVS vs. Rythmik

Hi all. I'm considering adding a subwoofer to my current set up: Bluesound NODE2i (Tidal MQA) to Cronus Magnum II to KEF LS50s. I'd like to supplement the KEF's on the lower ranges.

I'm considering 2 subs and have located a few deals:

  1. Salk Sound Rythmik F12 in white for ~$1100 
  2. SVS SB4000 for ~$1200

I particularly like the room control on the SB4000, but am not wed to it. Any thoughts between the two? Anything else you'd recommend in this price range?

A few other notes: room is 12 x 30 feet, with a wall of windows (NYC condo). Acoustic paneling is next! Likely don't need all the size/wattage that either of these subs provide. Perhaps getting a MartinLogan "X" with the room correction could suffice, but would rather buy top notch and be done with it.

I'll utilize this for 75% music / 25% movies. Music tends to be bluesrock/jam bands/jazz

jdtalv
mcreyn
293 posts
 
M-db

I owned 6 different subs from that manufacture, starting with their original 80s design. My  Rythmiks represent a step forward.  
m-db's avatar
m-db
933 posts
 
mcreyn, 

As I said, I've never even seen one.  

Nice to hear of your satisfaction though.
sharbatgula
19 posts
 
My 2 cents from the 4 years of listening and enjoying experience with this magnificent speakers.

Buy a pair of competent subs that can go clean and flat as high as 100-120 Hz, because LS50’s response starts to weaken at these frequencues especially if you have them far from the back walls. If possible, cross them over at 100-120 to further relax them and improve the mids. Keep the subs close to the ls50 and you will enjoy. 
You can leave them full range as well just dial the sub volume adequatelly.
I enjoy them with a single b&w asw608 sub and the bass is adequate at the listwning position and very clean and articulate.
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