Show your Bill Fitzmaurice cab

[bassbrock]

All of the piezo tweeter options pretty much sound the same sonically. Each array, from four to sixteen tweeters in a Jack 12 is series/parallel wired to have similar sensitivity with the woofer. Neither overpowers the other. The high pass and low pass filter network also helps to balance things out.

In my opinion, the piezo arrays sound best versus the diffraction horn. More drivers doing less work just sounds better to my ears. The diffuser on the melded array does help to smooth off axis response even more. And yes, the Omni 12 and 15 plans include piezo options.

It is my understanding that Bill began including a diffraction horn option to satisfy those who have a stigma about piezos. Often they have never heard them, or they have only heard them in poorly designed cabs.

Bill is a bass player by the way and has previously commented that the Jack 12 comes close to "the best bass cab" he has ever designed. Paraphrasing of course.

 

[Proton Lenny]

Thanks again Brock. I'll continue to research. Where would you fit the piezo array on a normal sized Omni 12? Having a hard time imagining it.

 

[dhomer]

Built last summer, Delta 12LFA's, covered w/Rust-Oleum truck bed liner sprayed. Very impressive..

 

[Ben B]

Thanks again Brock. I'll continue to research. Where would you fit the piezo array on a normal sized Omni 12? Having a hard time imagining it.

The omni 12 has a piezo tweeter option, but it's not an array. You just put 2 piezos in the same location as you would put the compression driver tweeter.

 

[Jazzdogg]

The Acoustics were reasonably efficient but lacked midrange response.

Amen!

 

[newbold]

what a popular thread!

 

[billfitzmaurice]

what a popular thread!

Compared to this one, not so much:
http://www.djforums.com/forums/showthread.php?t=38107

 

[spongebob1981]

Those questions perhaps would be better answered in the BFM forum; swing by, its a great community.

I can only talk for Jack10s. Picture this: every other cab you've heard was covered with a blanket. When you hear this, you cant come back.

Mid heavy, Low on bass, piezos are bad and piercing... MYTH!

Bass on such a small cab is up to par at least.

Middle freq response is tamable with very small adjustments (talking about bass cab use) and tone just vomits out of the cab, no kidding.

And I cant talk about piezos as I couldnt find them yet, but given the overall performance of the cab, I do believe they sound great.

If you want kind of big sound and dont mind kind of big cabs, go for 2xJack12. You can go way bigger (DR250+T39) and smaller (2xJack10) from that but its a great starting point.
See ya!

 

[Philonius]

Recently finished up a pair of Jack 10s. I can't say I've used them extensively yet, but they sound great so far; very balanced and full.
I've been looking for a smallish, light, modular rig that will fill a coffeehouse or hang with a rock drummer, and think I've finally found that sweet spot. Two boxes that come in under 25 lbs. and sound great.

 

[gregoire1]

very nice!

 

[sixway]

Wow! Those look great! Let us know what you think of the sound after you've gigged them....

 

[dcodym]

Very handsome indeed. The more I think about the Jack, the more I think I'm going to build 2 1x12s instead of an O15 TB.

Those look really great. Clean and crisp.

 

[BassGreaser]

WOW they do look amazing! congrats on some great cabs

 

[gregoire1]

shouldn't the phase plug extension be on the otherside of the baffle?

 

[lelandcrooks]

Nice. Glad to find this thread. I'd been keeping an eye out for it.

 

[dcodym]

JoeVictim-

Purchased Tolex, grille cloth, corners, and feet from Gary at speaker builder's supply:

[Invalid or Expired Link Removed]

...

Gary has a nice tutorial on Tolex-ing and grille cloth application at his site's storefront.

Followed the instructions there and have no rattle or vibration from the frame.

Let me know if you have any questions.

Thanks.

Hey good call on the site, there. I'd been there just searching out hardware and finishing options. After reading your comment here, though, I went and looked at the tutorials and joined the forum. Loads of helpful info.

Thanks,
Cody

 

[mikell128]

Here is my Jack 12 and Omni15TB (as well as my own composite cab). The Jack has seen a bunch of rock gigs and proved to handle them well. Not really a huge bottom but the mids cut through the mix very well.

The Omni has only seen a few gigs so far but it is LOUD with tons of bottom, as well as crisp highs (if I want them) and a great tone overall. I've been playing around with my tone at the few gigs I've played with it and it responds very well to slight changes in EQ so I've been getting closer and closer to where I want it to be

 

[father of fires]

Here is my Jack 12 and Omni15TB (as well as my own composite cab). The Jack has seen a bunch of rock gigs and proved to handle them well. Not really a huge bottom but the mids cut through the mix very well.

The Omni has only seen a few gigs so far but it is LOUD with tons of bottom, as well as crisp highs (if I want them) and a great tone overall. I've been playing around with my tone at the few gigs I've played with it and it responds very well to slight changes in EQ so I've been getting closer and closer to where I want it to be

I understand that bass is omnidirectional and all but I have a hard time with the look of the omni cabs.

I know the sound is there but my brain can't figure out where the it's coming from.

I miked an Acoustic Sound Corp folded horn cab one time by basically putting the mic on the wood bracing that is exposed at the top. It sounded good. It was really woody and organic!

Where would you mic a cab like this?

I'm not trying to start a fight. I love horn loaded cabs. I played that Acoustic cab for 3 years and it was a monster!

I have wanted to build a BFM cab for years but I'm still a little confused by his designs.

I guess I need to stop over thinking it and just believe in them.

 

[melarson]

I understand that bass is omnidirectional and all but I have a hard time with the look of the omni cabs.

I know the sound is there but my brain can't figure out where the it's coming from.

I miked an Acoustic Sound Corp folded horn cab one time by basically putting the mic on the wood bracing that is exposed at the top. It sounded good. It was really woody and organic!

Where would you mic a cab like this?

I'm not trying to start a fight. I love horn loaded cabs. I played that Acoustic cab for 3 years and it was a monster!

I have wanted to build a BFM cab for years but I'm still a little confused by his designs.

I guess I need to stop over thinking it and just believe in them.

Keep in mind the Omni's are a full range cab that are capable of being used as a PA cab as well as bass or keyboard. That might be why they don't make total sense when you physically look at it or think of it as a bass cab. The large openings are the folded horn mouth. The smaller opening in the middle is the midrange driver and top center is the tweeter.

 

[billfitzmaurice]

The large openings are the folded horn mouth.

That's actually a flared duct. It does work as a horn above 250Hz or so, but it isn't folded.