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 appreciate the advice. I will try and play around a bit this weekend there just isn’t a lot of room to move stuff. It’s a very small space.

@sgordon1 - thanks, I was unaware, I will check it out.

As much as I love the ML Balance Force subs, I'd go with 2 of the Kef's rather than just 1 ML.  

a few bass tracks that you might enjoy and help you figure something out.

I just moved my Sumiko Talisman S Cartridge with it’d stiff Sapphire tube cantilever to my ’fixed’ long arm.

I’m gonna listen again to ascertain if it has a speck tighter bass than my AT33PTG/II playing Cecil, Mila, Niels/Sam

https://en.wikipedia.org/wiki/Alternate_Spaces

mila drumke, my funny valentine

https://www.youtube.com/watch?v=ukrNpHCDSjc

double bass, niels and sam

https://www.youtube.com/watch?v=-Jvz_hcTZ9k

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I am big on Imaging, and would try a stereo pair of subs, front firing, located next to the FL and FR, knowing that the fundamental notes begin mono, however the overtones become directional. I am not a fan of ports, if so, front firing only, and try stuffing them.

audiophile1 mentions the historic difficulty matching subs with electrostatics. I think I might try and find a high quality crossover dedicated to the job, one I could return for full refund. when you take the low bass job away from the panels, both location and seamless blend become even harder.

I’ve never heard a Swarm, but aren’t they for larger spaces? Use with speakers that have large woofers, that already give low bass/overtones directionality, the swarm for ’missing’ very low foundation?

I think of my 15" woofers as built-in stereo subs, I get the advantage of 6.83 cubic feet by using the same/larger cabinet as the horns.

@elliottbnewcombjr thank you for your advice and the bass tracks. I’ll hunt them down on Tidal later today!

I am not much of a techie, so could you explain to me more or attach a link regarding what to look for in the way of a "Dedicated Crossover"? How does it work?

You also mention a stereo pair of subs, do you have a recommendation? Would the KEF KC92s work for this? And would they be on the inside or the outside on the FL/FR speakers?