Active crossed mini monitor sugestions

[G4ME]

I am upon my next project. I am looking to build a pair of mini monitors, two way actively crossed. I am looking for extension on the lowend but nothing to big for the enclosure, I know I am asking for best of both worlds but I know there a some ideas out there. I was looking at the Adire Extremis 6.8 kit and thought I could just buy the drivers separately and build the active crossover.

I am just looking for something similar, in cab size (1 cuft max) and extension. Price limit on the drivers is around 350 for all of them.

Let me know if you guys know of any plans, and attach the links.


Thanks

Oh and for power i am using 4 LM3886 so nothing that has to horrible of sensitivity, that Extremis is pretty bad.

[G4ME]

Anyone have a suggestion?

[mike.e]

Originally posted by G4ME
I am upon my next project. I am looking to build a pair of mini monitors, two way actively crossed. I am looking for extension on the lowend but nothing to big for the enclosure, I know I am asking for best of both worlds but I know there a some ideas out there. I was looking at the Adire Extremis 6.8 kit and thought I could just buy the drivers separately and build the active crossover.

I am just looking for something similar, in cab size (1 cuft max) and extension. Price limit on the drivers is around 350 for all of them.

Let me know if you guys know of any plans, and attach the links.


Thanks

Oh and for power i am using 4 LM3886 so nothing that has to horrible of sensitivity, that Extremis is pretty bad.

If your looking for extension from a tiny box that has sensitive drivers,your not going to get it. [hoffmans iron law]

Id get something that is proven. MONITORS are meant to be a reference,so youd better make em pretty good..

[G4ME]

Well mostly i am looking for something that has big displacement, and can handle power.
With the active cross over i am toying with the idea of adding a linkwitz transform to the low pass, to bring out the low end.

But this is all speculation right now. Before even start thinking what cross over points to use, i need to at least get the drivers figured out.

[Bare]

OR.. you copuld go to a P{ro Audio shop and ..Gasp!
Buy a Set .. complete with built in Amplification and active crossover.

Not free.. but you can Audtion them first..and they come with a Waranty!

[DJNUBZ]

Good plan but if you are going through the whole trouble of activly crossing over your speakers may I suggest that you spend the money for a little nicer drivers? Within the $350 I would look at the adire extrimis. If you are willing to spend a bit more I would have you look at the seas exel line for your drivers. The nice thing about going active is you can use steep crossover slopes without a large cost and without the phase problems. With the steeper slopes you can use a larger midbass and play your tweet lower to meet it.

[G4ME]

Originally posted by Bare
OR.. you copuld go to a P{ro Audio shop and ..Gasp!
Buy a Set .. complete with built in Amplification and active crossover.

Not free.. but you can Audtion them first..and they come with a Waranty!

whats the fun in going into a store and buying something?

[BobEllis]

Originally posted by DJNUBZ
<snip> The nice thing about going active is you can use steep crossover slopes without a large cost and without the phase problems. With the steeper slopes you can use a larger midbass and play your tweet lower to meet it.

Not quite - analg fliters is analog filters - you get pahse shift. You can use steep slopes without the insertion loss of a passive, and phase shifts are fairly easy to correct for actively, but they are still there.

Another option would be Focal 6W4254 and T120-TD5. I'm very happy with that combo, although at .8 cf it's not exactly mini. Great resolution and imaging, extension to low 50s. Limited bass level if you don't use a sub, though. (96 db@ 80 Hz.) The 6W4311 would be a good choice if you are willing to give up some extension for the ability to play louder. Just a hair over your budget with either woofer at zalytron. I xo at 2400 hz 4th order LR with a 7 db Q=3 notch at 4500, sloped baffle for phase alignment. I haven't heard the Seas excel or extremis, although both look like they'd need more work in the XO

[DJNUBZ]

Sorry I'm used to digital crossovers (they do have less phase problems right?). Could you point me to a site on how to correct phase problems on analog active crossovers.

[BobEllis]

some forms of digital filters can have virtually no phase shift, others that merely copy analog filters have the same issues.

www.Linkwitzlab.com is a good, practical site, covering much more than just phase issues. When I made my first active XO I made it so that I could bypass phase correction. I was amazed at the difference it made, for the better, of course. It really made the leading edge of cymbal crashes and other transients really come together.