Two Inuke's won't do you much better than one Inuke.
Reason being the JTR Captivator driver is a dual 4ohm voice coils sub meaning you can wire the voicecoils either to 2 or 8 ohms total resistance.
A single Inuke DSP amp can't run run a 2 ohm load bridged, but it can run a 2 ohm load in stereo or 8 ohm bridged. Stereo 2ohm gets you 1500 watts x 2, and 8ohm bridged gets you 1500 wattts x 1. So unfortunately you get pretty much the same results if you buy two InukeDSP 3000's and couple them with a pair of 8ohm Captivators, or 1 Inuke DSP and couple with with a pair of 2 ohm captivators.
Sadly the big brother Inuke DSP 6000 can't even run in 2ohm stereo nor 8ohm bridged. The Inuke DSP 6000 can run 1500watts by 2 into 8ohm stereo, and can't run anything bridged at all. So basically all Inukes are going to get you the same thing and so the only rational outcome to ordering an Inuke for these particular 2 or 8 ohm configuration options subs is to go with a single Inuke DSP 3000. If you had a four ohm sub the Inuke DSP 6000 would be fantastic.
I love the INuke DSP 3000, but it is a bit underpowered for the Captivator pair. (though it is still no slouch - http://www.youtube.com/watch?v=XlpqBoQ1hoQ
) The Crown XLS-5000 is signifcantly more powerful. (the Cerwin Vega cv-5000 would be as well).
The Inuke DSP 3000 will start clipping and actually shutting off at -4dB from reference. It did so three times during the 2012 blind audition on my captivator pair (before I had purchased the crown amp) The Crown XLS-5000 will go beyond reference by a few dB on the most demanding of ULF movie material and much higher on music. It'll never shut off, and never ramp up the fans, and never get hot. (that I've found anyway through personal experience).
I'd keep an eye out on the Peavy IPR 7500, but at current it is vaporware. It is going to support 3750 watts x 2 into 2 ohm. When it comes out I might be picking one up. I LOVE these new DSPs, they make short work of realtime eq'ing with something like the omnimic. The IPR series amps are better than the Inuke series, but the IPR3000 isn't going to best these old battle tank 5000 watt amps either --- The IPR 7500 should however.
If I had to choose between the Inuke DSP 3000 and a EP4000, I'd recommend the Inuke DSP 3000 everytime. I've had two EP4000, units, and the INuke is pretty similar in power capability (with a slight edge to the EP4000) but the Inuke DSP just flat out rocks and more than makes up for a slight power shortage. However, the Crown XLS-5000 is in a whole other league as far as true power output. If you want the extra headroom to take the caps to their full potential you need something like the crown or the cerwin vega. --- 5000 watts or so. 2500 x2. It's more than just 3dB in this case, because the crown xls-5000 rating seems to be more realworld wattage figures than the Inuke or behringer amps. For example I've blown up an EP4000 amp pushing it too hard into two ohms on my cap pair. It died. it got hot, fans went into overdrive, and it died (silent low CFM fan mod likely responsible for the loss). The cap pair didn't need a HPF, and never bottomed out on the EP4000 on any material I ever played or demoed including all the WOW, FOTP, KFP, IM, Hulk, movie clips etc. I engaged the Crown XLS-5000 on sub duty and it can bottom out the cap driver on these same clips, thus I do need to engage a HPF, which protects the driver below port tune. The crown will give quite a bit more volume up to reference with the subs a few dB hot fairly easily. Gorilla83 took a video showing his XLS-5000 put out about 5-7dB more than his EP4000. The wattage numbers on paper don't show that to be possible, but his SPL meter did, and I've experienced similar. When you are talking 5dB more at max volume that's VERY significant. Almost a doubling of sound. So I'd recommend the Cerwin Vega, or Crown XLS-5000 over the Inuke DSP3000 for the Cap pair. Do plan on buying an HPF, like the MIC2200. For $80-$90 it's cheap, (about $50 on ebay used) and it works great as a two band parametric EQ to help tailor the sound a bit to your room. (assuming you have something to measure with.)Edited by Archaea - 8/18/12 at 11:05am