Subwoofers - Final Thoughts with Martin Logan ESL 13A


I’ve narrowed this down to 3 choices (I think) and was looking to see if anyone has had some experience with pairing these subs with ML ESLs? I can’t try and return because they are mostly secondhand purchases, so hoping to get it right the first time!

Force Cancelling subs have been highly recommended, so:

KEF KC92 (or KF92 older model) 2, 3 or possible 4 of these:

https://assets.kef.com/product-support/kc92-subwoofer/KC92_info_sheet_EN_V4_20240124.pdf

Martin Logan BalancedForced 210 - Maybe the best as they match up nicely, but I could probably only do one of these as they are HUGE. I have only one spot I could put one as far as the manual's recommendation goes. Martin Logan says these will cover 3000 sq. ft. My room is only 500 sq. ft. Two maybe overkill, but some say, "2 subs or no subs" Maybe I could put another addition on the house :-( 

https://www.martinlogan.com/en/product/balancedforce-210 - click on Specs/Lit

Lastly, The Swarm Subwoofer System - not sure how well this would work with my ESLs.

https://www.audiokinesis.com/the-swarm-subwoofer-system-1.html

Any advice would greatly be appreciated (as usual).

Thanks, and all the best of the season to you all!

 

 

 

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@audphile1 so I toed in the speakers a bit more moved the chair closer to the speakers. They are now 6’ apart, 33" off the back wall and I’m sitting about 12’ away and yes, I’m hear a tad more bass as I move closer in.

It really seems to be about the music here too. I played Deep Bas by Niels & Sam recommended by @elliottbnewcombjr and I heard good clarity and detail but not Deep Bass as the title states. Then I listen to The Hidden Camera by Photek and An Evening In Dallas by Joe Sample and you could feel the bass pound the floor.

I would like to be able to tweak the bass myself with the Genesis ARC program, but I don’t know anything about frequency response graphs and all that stuff. I have looked around the web and can’t seem to find much on this?

@m-db thanks for your input. I wouldn’t mind trying out the Swarm set-up, but it used to be $2,500 now I see it’s $4,400 and I would want white, so it’s more for a custom color. I could do a couple of used KEFs for around $1,600.

Thanks for the Audioholics article. I think I just need to "Crawl" outta this rabbit hole, maybe trade it all in for a Sonos system and call it a day!

Have you ever experimented with the rake angle of your speakers?  Lowe’s sells plastic shims that make this very easy; try a downward tilt.  You may also want to shorten the distance from your listening position to the speakers.

My CLXs are bolt upright (to within 0.1 degree using a digital level) and are with exactly zero toe-in and exactly the same distance from the front wall (5-6 feet) and the side walls, using a laser "tape" measure.  Speakers and I are set-up in an approximate equilateral triangle.  I can measure for you if you think it matters. 

FWIW-perhaps the best sound I had from my CLSs was firing down the long axis of my then living room and having the speakers in the middle of the that vector, at the suggestion of Michael Green.  It only works in some living situation and with a very easy going partner, lol