Well, I went ahead and tried level matching, with just the subs running and none of the other speakers, and DAMN!
Before when I had checked the levels, I had basically played the plow scene from The Crazies, cuz it's got a TON of bass and it just hits you hard and gets right to it and seems like a good scene to see how good your sub is.
So previously I had all my speakers running as I normally do, and would run 1 sub by itself and check the levels with my rat shack SL meter, and then make a note of what a good average DB was, then I would turn that subs volume all the way down, and then go do the other sub and just adjust levels on both subs till I got around the same DB reading on both subs. I had the meter positioned from the primary seating area which just happens to be the same distance to each sub, I actually measured.
I know not the most scientific and accurate way to do this, but in real life it should more or less kind of suffice.
Anyways, I had to really crank the v3 as I said before, to get the output in DB as the same as my v2.
I took my rat shack meter and put it within a foot of the v2. Left the gain at its normal, 11:30 position. I turned off my amps to all my speakers so just the v2 was outputting sound. Replayed the plow scene from The Crazies. The DB was reading around 115 DB!!! I was like WOW!
It's really kind of fun just to have your sub going so that you can actually see, and feel what that sucker's doing.
So I turned down the v2, and then go over to the v3, and put the meter about a foot away from that, and then turn the volume up on that, to around the 11:30 position, the same as the v2, I replay the plow scene, and HOLY BLEEP! I was hitting a tad bit lower than the v2, an average of around 112 or so. I then turn the gain up a tiny bit more and am able to achieve the same 115 or so that I was getting from the v2!
I now feel like a complete and total idiot because in reality the v3 does seem to perform just about the same as my v2.
I now realize the importance of level matching each sub without any other speakers going.
So I am also relieved that all is well. The v3 amp gets a thumbs up from me.
So I guess from here, my next step is to just level match them both up to be at the same DB level from a foot away. Even though when watching movies the volume may actually not seem as high on the v3, as it is on the v2. And then just leave it that way. Right?
Just seems weird to me that in a real world situation, watching movies, my v3 was so much quieter than the v2.
Can't wait till my other v3 gets here in a few days.
EDIT : Quick question, now that I think about it, when I was running each sub by itself, with the rat shack meter only a foot away from each sub, I was getting an average of 115 DB's at it's normal gain setting. And that's with the AVR receiver at it's normal gain setting that I would have it at if I were actually just watching this movie. I play my movies pretty loud. In my experience, when playing movies, I usually get peaks of around 105 DB's. Am I at a safe setting if I were to keep it this way? I can push the subs a lot harder, and my v2 at least has never bottomed out.