Heres a render of one tower idea. . .

Hey everyone! I’ve been reading and posting in this forum for about a month and I couldn’t think of another place with so much helpful info Anyways, I wanted to share my idea with everyone so I could get some feedback and helpful criticism as well. I already have all the drivers but the subs which I plan to order with a couple weeks. The mids and highs consist of two Focal 8V5411’s, two NV 4242’s and one TC90TDXB tweeter per speaker. I haven’t decided on crossover points yet, but I know the 8’s will go down to about 70 Hz with maybe 3rd or 4th order crossovers. All crossovers will be Linkwitz Rileys. Each BPD 1201 will be run by a PE 250w plate amp. I just ordered those on sale The mains will be run with about 100 watts rms. The tweeter will be flush mounted. What do you think? Should the 8’s be included in the D’Apollito configuration, or should they just sit below everything else? I’d like to keep the tweeter about 3.5 feet from the base.

 

I made them in 3D Studio Max 4. They one on the left is just a burl oak bitmap. I doubt I would actually use oak burl though.

 

I dont know how it would be done, but the JMLabs look may have its advantages.

 

Yeah you can say that, im trying to keep the whole project under $2000 which shouldn't be a problem. The Focals ran almost $700 and the BPD's are $91 each. I know the kind of sound im looking for and I know how to it. In the end, I'm confident that they will sound like they cost 3 times as much as I payed for them. Ill end up spending the next two or three months playing with ideas and experimenting before I actually have a finished product. I have give myself something to do over the summer other than work

 

Well I know how the drivers sound already. Thats why I picked them. The tweeter should be pretty much level wich the listener's ears. In this case right where they are at 42 inches high is just right IMO. Just remember how tall these are, they are about 5 1/2 feet tall. They are monsters man. The scale is very close. But yeah my plan is to build a number of test boxes and woofer boxes, some separate and some in the same encloser to get something satisfactory. As far as sound stage is concerned, I just want to maintain the point source illusion through the tweeter in the middle configuration. My main goal is LOTS of sound. I want it well balanced with a wide dynamic range, and very articulated. These drivers are very capable of that.

 

For the subs, I plan to to have the low pass around 60-70 hz. I have considered the satellite sub route, but I will be putting these a small room. Yeah these things will be way too big for the room in the first place to get full potential out of them. I wouldn't be able to to have the satellite subs and towers on the same side of the room. As far as the dimensions is concerned, this should give you a good idea of there size, that guy is 6ft tall. I'll render a semi satellite sub idea.

 

I figured something sort of like this for the interior...

I plan on doing pretty much the entire box with a 1" + .75" MDF with an extra thick baffle. The interior dividers will be 1"MDF I may put some cross bracing in the sub side, I'll make it up as I go along, as with most other things. All the walls will be lined with Dynamat and acoustic foam. I will just play with Polyfill until it sounds right. The sub/port placement could be played with as well when the time comes I guess. And as far as the tweeter baffle goes, the Focals have an inverted dome and don't display the same diffraction, and baffle step characteristics as most other tweeters, so it will do ok as is. But I guess I could expirement with it alittle with some scrap wood. Speaking of drafting, I have a drafting final in 5 minutes!

 

The more I think about it, the more I lean closer to the idea of using satellite woofers for the flexibility and ease of design.

 

Thanks for all the comments guys. When it comes to size and weight, I'm not too concerned, I have friends I would make help me out I think what I will end up doing, is playing with the numbers and some test enclosures until i get a desirable performance. I'll then draw up an isometric view in Microstation or AutoCAD of the real thing and re-post it to see what everyone thinks.