Cool track!
Here's the thing about Ampeg, totally IMO, YMMV, but guys on the amp forum seem to agree.
With the sealed 8x10, your not going to hear this massive bottom end like you want to hear playing solo. The cab rolls off about 50-60hz on the low end and also rolls off about 2k on the high end. All the Spec. babys and guru's will tell you all kinds of things about how this cab goes lower and this one goes higher yada, yada..... The fact is that onstage and elseware (esp mic'd), that sealed cab sits exactly where you want it to in the mix. The good, powerful low end that is "bass" that you want is all there, esp in the 100hz range where it counts. The whole cab actually resonates a little lower but you don't really hear it until you give it some room, put it on a stage and stand 20 feet back from it. Than you go "ohhhh.....". The sealed 810 stays tight and keeps you out of the mudd.
Now, that cool sounding 30 hz tuned ported cab that sounded great in the store falls to it's knees in the mix vs the 810. All the low end that sounded killer solo (which we all love) , turns to mud in the mix and is usually so pronounced that you have to turn things down further to compensate. Believe me , been there done that, learned, and went " why does my bass sound like a beast live with this ampeg 810 cab?"
A little added bonus, the 810 has a nice sweet spot in the 800-1000 hz range, right were.....you guessed it , the Spector growl resides

. On a plus note.... if your looking at an ampeg head, stay away from the the ultra low and ultra high buttons. They will basically give you a preset EQ curve and render the rest of the EQ on the head practically useless. you'll find yourself cranking things on the graphic to get a little bit of difference. The ampeg eq knobs aren't flat when set to 12:00 either. There's a bit of a hump at 100-120 hz with them set flat. I have the svt2 ( non pro) preamp with a power amp and 810e and love it. I use the vol on the svt 2 as kind of a gain knob, and the vol on the power amp as a master. that combined with the trim pot on the tone pump to vary the output level on the bass (to not drive the input so hard but have all of my bass and treb boost avail) works out great for me. The new svt 7 pro is the most "SVT cl / SVT 2 " sounding head from ampeg. Reguardless of having one 12ax7, most guys agree. I plugged into one and set my eq like I do on my 2, and my tone was there.