hi and welcome to the forum
any sub will interfere with the speakers in the rear shelf if you don't have a small box for them.
if your sub works in small sealed boxes, the db will make it shine.
some of the best info you can get on the db is on the old db forum, where steve used to reply rather often.
imo stick to the plans if your sub won't use up a lot of space from the sealed part.

Hi Adrian and 60,

Thanks for you suggestions. I'd like to keep my rear shelf speakers if possible as I don't want to have to spend another $200+ on new speakers. They weren't 'cheapies' when I purchased them 3 years ago and I doubt they'd fetch much on ebay. I'm going to be up for around $600 to build the DB10 inclduing a decent amp and its starting to get expensive if I have to get new front speakers as well. I dont think I can fit the 7x10s in the doors!

I notice the prices in the US are a lot cheaper than here in Australia  - the result of a much bigger market due to a lot more people! I would get stuff from the US but when weight starts getting uo there, shipping can cost as much as the product which then brings it on par with Australian prices. For example, from a store, I can get the Infinity ref1040w for AUD$165 which is about AUD$65 below RRP. On Australian ebay, you can get it shipped for $180. On us ebay, you can get it shipped (within the US) for around USD$70 which is about AUD$92. I saw it online in the US for around USD$60. You get the picture!

So I think I will keep the 7x10s for now and as you suggest 60, I'll suck it and see, and go from there. I am anticipating an excellent sound from the DB10 as I have read what people are saying. It's like a good steak cooking on the BBQ, making my mouth water waiting for that steak to finally arrive on my plate!

keeping the 7x10s and not houding them will most likely mess up the sound from them and probably kill them.
i know how it is to see such low prices in the us and wonder why stuff is so expensive locally. check al the rules. maybe it'll be cheaper ordering directly from the us.

[quote author=J_Rock  link=1156065344/0#6 date=1156170697]I have built some WOs, Several DB1 and DB2, and like to think I have experience with Steve's best designs.
[/quote]

build a wo32

Hey thanks for eveyones 2 cents. If I could fit the 7x10's in the front, I would, but they are just too big for the doors. Putting then in the dash might obstruct some of that all important road view. However, this may only be a problem when actually driving...

J_Rock - about the box design for the 7x10's. Considering I wont be caring about the bottom end from these, can I just make the smallest possible enclosure needed? I'm guessing yes as enclosures a purely there for the lower end of the sound spectrum?

My first experience with going beyond a speakers xmax was about 9 years ago on stage doing a gig in a local pub in Melbourne (of whcih I did around 1250 in 6 years - sorry, I'm getting toward 40 and I think I'm hagning on to any piece of a simpler time I can!). Anyways, it was the last song of the night and the song called for the use of an envelope filter. We were doing that rock end-of-song muso thing when we all play as fast and hard as we can and finish on a final big note. Just before the final big one, I lost the bottom end on my biamped system (4x10 Hartke top, single 15 EV bottom). Since it was the end of the night I didn't care too much. The next day I checked it out. There were no visible signs of damage and when I pushed on the cone, there was no evidence of a melted coil at all - smooth as a babies backside. I plugged it in and it sounded like a transistor radio speaker! I couldn't for the life of me work out what was wrong. Eventually, I turned it over and noticed a faint line that ran the entire way around the cone near the suspension and below the dust cover. So the thing had maxed out and the small part of the cone  still attached to the motor, decide it was parting ways with the rest of the cone and just pushed straight on through and said hello to the back of the dust cover! time for a JBL E140!

Thanks again for everyones posts here and throughout this site. There are nuggets everwhere to be found. I get a bit sick of usenet with the one-up-manship and off topic chatter that never comes back to the op's original question etc - can be quite unfriendly. Theres a good vibe on these forums so I commend you all and keep up the good spirit!

I would suggest building a box the entire way across the package tray of the vehicle, with enough depth to clear the magnets.  Alot of the time these boxes are really hard to make though, because the trunk torsion bars are in the mix and get in the way.  But generally- like you said- any size will work its only critical when aiming for low end extension.

Another thing you will notice is that the people on this forum thrive on pictures- so they ask for them all the time. lol.

Do you have your sub and amp picked out?  If not- give these guys a price range and your location, they should come up with a few suggestions.

only advantage of class d is, imo, is better efficiency.
you chose a good combo. infinity works really nice in the db-10.