Greetings and many, many, many well deserved thanks to the members and sponsors of the AVS forums.
I've been a lurker here for 12 years. I've use the vast knowledge and DIY determination here to guide me through HT purchase, projector purchase (twice) 2 HTPC builds, Windows Home Server build, and even reference on the ELK M1 Gold alarm system. Amazing!
We recently moved into a new house, it's take a few months of various other priorities to get the HT room ready to go. It's actually our living room and not a dedicated home theater, just ask my wife
. I setup my deftecs BP2004 mains, 2300 CLR and BPX2's. Connected to my Denon AVR-3806 (this is ready for an upgrade). We had direct tv put a new Genie box in and we swapped the PS3 for a dedicated Sony Blue-ray player. I ran my Audyssey as normal and then watched some HBO, Man of Steel, listened to some music and thought man do these speakers always impress me.
Then we watch Desolation of Smaug .... the dragon's roar/voice in the end made the BP's built in subs feel muddy and unclear (very few times has this happened, I've been very pleased with the setup for years). I knew then I had to do something... this led me on a journey of reading 85 pages of Marty Sub goodness, stone henge, parts express, etc, etc ,etc. Thanks to Donny, Eric and LTDO2, your work in this area is appreciated by this poster and sub crafting noob.
So since I lost a side wall in the new living room I put the BPX2's on the back wall and will be putting some in ceiling surrounds up, to go to 7.1. That is just more background.
I'm committed to a DIY sub. I have the tools (table saw, various routers, biscuit joiner, clamps, etc). I like the idea of making value from my sweat. I'm not an audiophile, I learned some and glossed over some in the last 2 weeks of research. I have tried several box calculators and am left with more questions. I even fell down the small cabinet passive radiator hole for a few days.
I was almost sold on the idea of a Ultimax 18" in a sealed cabinet, but all the talk of music being the the main focus for sealed subs drew me back to ported, well ported with a trip through passive radiator land. The Mary Box is pretty easy to construct if not design, this brought me back. The WAF is going to keep the form factor small (smallish for the normal people, just plain small for the AVS crowd). Along the way I am sold on the idea of the iNuke 3k/6k, the flexibility and quality soar over the plate amps I have seen.
Room is 14'x18'x12' the 18' side is the one missing the wall. listening position is at 15ft center.
So on with the questions.
Can I plan a sub(s) that will pair with the subs in the towers?
With subs in the towers upfront already, were would the new ones make the most impact, still upfront or side and rear?
Downfiring? Originally ruled out due to ridiculously thick carpet and pad, but then saw one with a plate built into the bottom. So if this is good practice, it's back on again.
Would I remove the LFE from the DT's and change the crossover? Or split the signal and put a filter on the DT's to keep them out of the <30hz range?
If tuning with the existing ins't an issue then what drivers in the 15" or 18" range are best suited for the smaller cabinets? (max is 30"x30"x30" - I would like to keep it a little smaller.)
Do I need a Rolls MB15b ProMatch to boost the Denon's signal?
What combination of driver and box design will get me down in the 19hz range?
Is there a drawback to using the light weight MDF?
Is there a sound or performance change to recessing the face so that a grille cover can be applied?
Is there a worry about grille cover resonance ( rattling )?
Does the self leveling 2 part finish have issues on the verticals, could I use it and let it self level on the top and roller the sides at the same time?
I know that's a lot of questions, and I don't expect the oracle to descend and enlighten me in a single post. But I wanted to get it all down.
I will do a build log on the ultimate selection and hopefully someone will benefit from my journey.
Thanks a ton!
General Mayhem (rt)