So It`s Ok To Mix and Match Ported and Sealed Subwoofers ??

Hello scm,

    I'm guessing you're using something like the Revel Gems as your main speakers but, as I stated earlier, it really doesn't matter. You didn't answer my question about your budget, so I'm guessing that means your looking to spend as little as possible.
    If you're mainly concerned with very good bass performance at your listening seat and want to spend as little as possible, One option would be buying another Revel Ultima15 pre-owned passive sub, use the crawl method to position each sub optimally and power them both with your Dayton amp.  
      Another fairly low cost new option is to sell your Revel sub and Dayton SA-1000 amp, buy a new or used pair of the good quality SVS self-amplified PB/SB 1000 subs (SVS may still have a pair of new SB-1000 subs on sale for $950) and optimally position both using the crawl method. With either of these options you could add another pair of subs later if you wanted to. I can describe how to connect 4 passive subs to your Dayton amp in series/parallel when and if you want to in the future.
    The only downsides of using self-amplified subs is that you need to make sure the subs have separate controls for volume, crossover frequency and continuously variable phase(I know the SVS SB-1000 subs do) and you need to set these controls individually on each sub, rather than once for both/all 4 subs when powered by the Dayton amp.
    A third option is to deploy 3 subs, which Dr. Earl Geddes claims can be as effective as 4 subs if properly positioned and configured. This may be best for your system since the subs don't need to match in brand, model or size and you can mix self-amplified subs with passive subs.

Tim

millercarbon...I can believe what you say wholeheartedly.
I sometimes wonder if the same effect of a DBA setup can be had with way lesser priced subs !?
I mean your just pressurizing the room right ?

When you think about it in the simplest way the swarm is just 4 passive boxes with a relatively inexpensive 10'' woofer in each one.  
Makes me wonder

rego..thanks, that`s a common idea no doubt.

Tim..My main speakers are Revel F52`s and I REALLY want to keep the Revel sub in play.
The SVS SB/PB 1000 are the ones I`m seriously considering.
45 days to see if they are a good fit and free shipping both ways (If not)
The 3 sub idea sounds good....and as to budget, the cheaper the better !


Steve

I sometimes wonder if the same effect of a DBA setup can be had with way lesser priced subs !?

Yes. For example, Tim has the Audiokinesis Swarm system with one Dayton amp. Read his comments, how awesome it is. Based on his and others info I built my own Swarm using 10" Morel drivers and cabinets from Parts Express. Same size drivers only somewhat higher quality, which is not my opinion, Duke himself told me mine will blow his away. I don't know about that, but they are awesome. Even with real Rosewood veneer and 2 Dayton amps mine came in under $3k.  But based on my experience plus everything I read learning how to build mine I'd say yes you can get remarkably close with much less expensive subs.

I mean your just pressurizing the room right ?

Yes that's pretty much the idea. I'm kicking myself because I noticed this years ago but failed to make the connection. For a while long ago I followed the Home Theater mantra with full range surrounds. The one really positive thing about that was the impressive bass. Which I now understand why. But didn't make the connection back then. Live and learn.

When you think about it in the simplest way the swarm is just 4 passive boxes with a relatively inexpensive 10'' woofer in each one.

 
Right. Parts Express was running a deal when I got mine, free sealed cabinet when you buy the driver. If low cost had been a higher priority mine could have been built for under $2k. In light of how good it performs, that is freaking amazing.

If you want to see what DIY with freebie cabs can look like, my system is now posted.