Yup, smoother frequency response because one Gotham functions like two co-located subs, while two separately located F 113's have less room effect.

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Randy - Wilson Sophia 2; BAT VK-600SE, BAT VK-52SE, BAT VK-5DSE; JL Audio F113 x2; Exact Power EP-15 and SP-15; Oppo BDP-83 SE; Emotiva MPS-1 and DMC-1; Marantz VP-15S front projector; 92" Stewart Firehawk; Rocket 200, 300, 750; ASC Tube Traps; SMS-1; WireWorld Silver Electra 5^2 PC's, Silver Eclipse 6 IC's and Silver Eclipse 6 SC's; Shunyata Hydra 6/Black Mamba CX-HC; Symposium Svelte Plus and RollerBlock Series 2+; Clear Audio Concept (MC); PS Audio GCPH

That sounds plausible but what about the f212?

Stereophile: JL Audio Fathom f212 powered subwoofer

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What I used to have... MCD/MDA1000, Pass Labs XVR1, 501x4, Magnepan 20.1,, JL 212 X 2, Equitech 3Q
- Long Live Two Channel -

Serge,

I have two F112's in my home theater now and have them dialed way down to around 9 o'clock, my home theater room opens up into a very large area behind the rear seats. Unless your theater is really huge you should be good with the two F112's.

The article makes my same point in the conclusion - two subs, not co-located, have a smoother frequency response than a single sub. Do not be fooled by the Velodyne curve - I have a lot of experience with the SMS-1 (the Velodyne stand alone unit) and I can get a table top flat frequency response for you, so long as I can clamp your head in the exact same listening position each time. Moving the mic even one inch produces a hugely different curve. Don't get me wrong, it is a very useful tool within certain limits, but you really have to trust your ears over the graph. And, frequency response tells you nothing about decay time, which is the real bane of subwoofer performance. Two subs in two locations helps with decay time as well.

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Randy - Wilson Sophia 2; BAT VK-600SE, BAT VK-52SE, BAT VK-5DSE; JL Audio F113 x2; Exact Power EP-15 and SP-15; Oppo BDP-83 SE; Emotiva MPS-1 and DMC-1; Marantz VP-15S front projector; 92" Stewart Firehawk; Rocket 200, 300, 750; ASC Tube Traps; SMS-1; WireWorld Silver Electra 5^2 PC's, Silver Eclipse 6 IC's and Silver Eclipse 6 SC's; Shunyata Hydra 6/Black Mamba CX-HC; Symposium Svelte Plus and RollerBlock Series 2+; Clear Audio Concept (MC); PS Audio GCPH

I hear ya buddy. But I still wouldn't mind hearing a Gotham one of these days. In the end, the Gotham was just too much weight for me to deal with.

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MX136, MC501s, MC402, MCD500
RtR 300Ds, JL Fathom F112, Mirage OM-C3, JBL 2600s
Dual CS 606, Ortofon 2M Black
Tandberg TD20A, Harmon Kardon HK 400xM
PPP, Power Port, WW Ag Eclipse IC's & Speaker Cables, WW Ag Electra PC's