Bob,

I'm not Costa Rican, I bleed red white and blue.

Yes, +6db.  If you have them in the front corners, you should also get some mutual coupling in the lower frequencies, which offset the added distance.  Same tuning would require a shorter port due to the increase volume, so less port noise, but response would fall off a bit faster below tuning.  Try first by just taking the top driver off.  Then try it with your current port and just one driver in the top cap, which will tune you about 2hz lower.  That should get you pretty close to 100db at the listening position, maybe more, at those lowest frequencies with the second box.  The wave expansion from the front should sound better and blend easier, plus you should get some small gain due to placement at the end of your L shaped area instead of projecting from the corner into both sections of the L.

Nothing about the Xbox remote hack at RemoteCentral.  It's only $9 + a USB connector and a little solder, so I'll be the forum guinea pig.

Looks like you have a big advantage being in the US.  I paid $60 for 2 sheets of mdf and I thought that was pretty good.  I paid $150 for my 15" Quatro (lists $15 cheaper than your Series II's) and I thought that was reasonable too.

It appears Canadians are paying roughly 2x the cost for the same materials.  With this in mind, I think you owe it to yourself to make 3 more and get 12 db more output.  So there.

No Bob, I'm no gamer, although I did play Resident Evil 2 for the PS1 until I got Tofu (no memory card help).  The remote is just to control my PC (movies and music) instead of using my cordless keyboard as a remote control.  It's just a simple cheap conversion.

Regarding your sub, you'd don't need another amp.  Your current one is powering both, so it's the same thing, just 2 different boxes.  Same power needed, etc.

I'm just making one prototype to start, but if it works out well you can bet there will be at least one more in the other corner as time and money permit.

Depending on how serious you are about really low bass, it might be worth considering tl's.  My Quatro models about 6 db louder at the same tuning in a tl vs. ported enclosure.  The Series II doesn't model nearly as well in tl (down about 5 db compared to my driver), that's why I didn't buy one of those.

By the way, my box is under 16 cubic feet, outside dimensions, and takes up just over 2 square feet of floor space, how big is yours?

Full report in about T minus two weeks or so, lots of graphs and comparisons between different boxes and my Quatro 15.  There's even a comparison between Quatro and Series II in a tl.

Well, I started my journey down the OB road this weekend despite the fact my receiver 'shot craps'. I felt like I was installing new tires on a totaled car.  ::) Building speakers for a receiver that's broke.

Made some nice progress. I didn't have cardboard large enough, But I did have some leftover counter top (formica veneered particle board.)

Since I'm using "real material" as opposed to a temporary setup, I figured I'd do it right with symmetry, neatness, ect..ect..
I got the 2 front baffles made, routered resseses for the drivers. Drivers are complements from 2 donor Niles OS-10 surrounds that were originally part of my system.

The wind has been let out of sails with no audio in my house, so I'm like a little kid who's favorite toy has been taken away.
Not much enthusiasm.

Bob

Whoa Nelly!!!

Bob,

Please don't go hacking your speakers up.  We have no idea what those drivers are and they may not be suitable for OB.  I didn't even want you to take them off of the existing baffle, just tape some small additions on to what was already there.  You could have used some wood scraps or whatever.  Then leave everything connected, original box behind the baffle, and give it a listen, a 5 or 10 miinute process to get an idea of what OB sounds like.

I think it's time for me to stop throwing out ideas and let you explore away.  Feel free to ask questions any time.  The reason I  jumped in to begin with was that I hated to see you scrap a perfectly good cab, when I knew you could make some minor changes and achieve something closer to what you were looking for.  If my new sub works out, I'll run the numbers with your drivers and see if something similar makes any sense for you.

John, No speakers were harmed during the making of the baffle.
The Niles screws were turned to the left, No damage done. Empty plastic enclosures complete with stuffing and screws are safely tucked away from the sawdust. If it all goes to hell, They can be reassembled. No harm done.

Please DON'T EVER STOP throwing ideas my way. Never, Never, Never.

When I build something, I don't take the time to make written plans. Because I'd probably change something anyway which would make the plans null and void. That goes for outdoor decks, indoor speakers, or entire finished basements. No plans. Ideas are generated and stored in the noggin.
So when I set out to try OB, I did a quick inventory of my building materials and found that the Formica was some pretty cool lookin' stuff (the counter top is leftover from the bar in my pics.) Thought it would be cool if OB's matched the bar.
Yea, I got carried away, took your idea to an extreme.
My ideas sometimes get extravagant, but an audio noob with radical ideas can be a dangerous thing. John, I like your ideas, keep 'em comin'!  ;D I'd rather build your ideas instead of mine. Granted, 'play time' in the workshop is a good learning experience for me, BUT, I'd rather build something with a more proven track record than what my brain can come up with.

By the way John, the drivers cones are plastic.
The tweet's domes appear to be a synthetic fabric type material, VERY soft material, the dome deflects with very little pressure from a finger tip. They've also got one heckuva large magnet for a tweeter (IMHO).

Early Saturday morning I stopped by the local pawn shop to check for orphaned drivers. All they had were large car subs, and guitar amps.
A couple local flea markets (huge one's) may be a good place to explore. Havn't been in years.
Unfortunately being a noob, I wouldn't have a clue what I'm looking at a far as what is acceptable for what type of enclosure (unless of course is says Visaton B200  ;D). And I'm sure the drivers sitting on a table at a flea market arn't going to have T/S numbers.

Bob