The Spheres 2.0

[Hybrid fourdoor]

Well after living with the first versions, I decided to try again. Although I am quite satisfied with version 1.0, these ones should be a lot more robust with a 2 way design.

Read about it on my page.

Enjoy

[Rocky]

Nice!! What midbass driver do you have in mind? Magnesium coned SEAS?

[Hybrid fourdoor]

Sorry, for whatever reason my first page didn't save after I was done.

So I retyped it...heres what I added

Well I was pretty impressed with my first version. So I decided to try it again, and make something a little different (although the first ones were different to say the least J.
This version will be a little more versatile. I plan on making a two way with a tear drop enclosure for the tweeter and a traditional enclosure for a 4"-7" woofer.

So far I've narrowed the tweeter selection down a bit. Most likely a Vifa. Due to cost I've narrowed it to D27TG-35-06, MG27TG39-04, or DX25TG05-04. I like the last two, especially the last one. However they are both 4 ohm drivers, so I may go with the first one. I would really like to use the XT (ring radiator) line, but those sorta expensive. The PL27TG-35-06 also looks good too.

Woofer selection is still out, but most likely it will go into a 0.55 CuFt enclosure, so that at least gets me down the right track.

Crossover will most likely be a 2K-2500 12db or 24db affair.

[navin]

if i were you i'd email micheal barnes at www.norh.com. he has been working on this idea for a while and is very helpful.

[Hybrid fourdoor]

To add flair to the thread heres a design along the same lines, his came out very nice.

[kingdaddy]

Very Nice!, Good finishing skills, how does it sound?.

[PooJou]

Those look nice. Just a question, don't the drivers you're using care about the ammount of air or similar inside the housings? i just assumed that that mattered a lot, because of the ammount of discussion etc. about actual speaker design and volume and what not. (just looks like really small volume that's all )

[Hybrid fourdoor]

Well my previous version had around 1.1L of air space, with the 3" driver I used there it goes down to about 150Hz. Certainly not alot of bass, but I never claimer other wise.

This new enclosure has probably a little more than double that volume, however it will be used for a tweeter this time. So it doesn't matter nearly as much.

As far as physical limitations, no ones been able to give me a clear idea of baffle step characteristics in a zero baffle situation. I think some have compared it to mounting on the end of a cylinder.

So far the first versions sound pretty good to me (for what they are).

[5th element]

Because baffle step is a rather messy thing because its not just the speaker but the speaker room interaction normal bafflestep comp for a box probaby isnt perfect.
Either way it cannot be more then a 6dB drop unless some cancellation occurs which I doubt would.

Id make a line level bafflestep compensation circuit thats variable and adjust things till it sounded the best. I think id just choose 3 or 6db depending on room placement and "tune" it like you would for a box. For a perfectly flat anechoic situation this may not give flat results, but in a room where the interactions are messed up anyway I doubt that its as important.

At the end of the day BSC is applied to stop a speaker sounding thin and unpleasent to listen to.

Either way they look great I think that other speaker uses a scan speak tweeter and a visaton titanium midbass. LOL i bet ill find that out if i click the link.

Nice work Matt

[5th element]

Its not a scan tweeter is something else, I dont know what else though haha.