Originally Posted by chrapladm
Nice to see the finished product. And great to see more pics of your theater again.
I have always liked your theater because it seemed like something I could do verse what others and more money can do.
Thanks! It's been a labor of love for a while now, but as you mentioned, I've been trying to keep the budget in check by nearly DIY everything.
Here's my very sophisticated port blockers: It's a piece of pool noodle noodle (the kind that flares like a q-tip at both ends), PL'd to a piece of plywood. It is a perfect, VERY snug fit into a piece of 4" port (4" S&D pipe). Works like a charm. I may actually spray paint the wood black so that it matches the rest of the box, but right now I'm using one au natural.
So, 16hz tune right now - like it! My schedule of balancing/EQing went like this:
1) Balance both amps/subs independently to the same SPL across the listening positions with just the SPL meter
2) Adjust phase for best frequency response with REW (both subs together)
3) Adjust crossover to mains in my receiver to best freq response in REW (both subs together)
4) Adjust sub "distance" in REW for best freq response in REW (both subs together).
5) All the above done with Audyssey EQ OFF.
6) Rerun Audyssey.
7) Go back and readjust what Audyssey did to the crossover and distance settings that gave be the best response in 3) and 4) above.
Listening impressions so far: The short of it is - LOVE IT. There is no downside relative to just having the one sub. There is more subsonic bass (likely secondary to the increase in 10-20hz content from the 16hz tuned Maelstrom). More couch shaking.
The seat to seat bass is smoother with less holes in the frequency response. And as importantly, the bass sounds more "effortless". I know that's mentioned a lot when people add a second sub, and it's true. It's better for music, better for movies, just plain better.
Now, I haven't cranked it to find it's limits. It won't win any SPL contests, and it won't play reference bass, BUT, it's just GREAT for my theater room. It'll play to -12 easily, which is flat out loud. Louder than I want to listen to for any length of time and keep my hearing intact.
The reason it won't play reference, is I only have a 500w plate amp hooked up to each sub. The Mal-x has an Oaudio 500w amp, so I have the choice of difference filter/eq settings, none of which should come close to crushing the driver as it's very "underpowered" - unless I do something stupid like pair the 12hz x-over with a 20hz port tune. I won't squeeze every ounce of output by any means out of the subs, and I think at full power they're loafing along at about 1/2 xmax. I'm hoping the low stress on the Maelstrom driver will allow it (the shortening ring glue in particular) to hold for the long term.
Also, the entire A/V setup is run off 1 dedicated 15a circuit - by design. It's a good example of not needing 4 dedicated circuits to have a whole lot of fun!
I'll update more as I continue to listen! So far no buzzing/rattling or other bad noises! Keeping my fingers crossed.