with access panels on both sides it's not too bad, about a 5 minute job with a ratchet. with only one access panel though it's a nightmare

yep, this is the tuba 60 "slim" version at 15" wide with eminence lab 12 driver

you can: happens in hydrogen- or helium-atmosphere and even when apllying damping material (about 10%).

i had ended up building a total of 4 of these, we went with a melded array for the bottom two for better horizontal dispersion (two stacks of tweeters glued together at a 90 degree angle), but the upper two speakers were just a straight line array, much easier to build. i didn't manage to get video of the melded array assembly... if you were only planning to build 2 of the dr280 i'd probably start with the melded array and any additional speakers to stack on top just go with the single line array. good luck with the build! shoot me a line if you need any help troubleshooting

@@jjzamo thanks man ill look into the melded array. Any idea on the make of the best quality melded array speaker? Or the one you used? Cheers!

@@finnclark8026 these were stacks of goldwood piezo GT-1016 tweeters. they took a little bit of EQ'ing to get the right sound but i think they do the job plenty well

@@jjzamo thanks jz

thank you! the wood bending was by far the hardest part for me, fair warning! if you ever do get to building drop me a line if you need any help troubleshooting

@@jjzamo I appreciate it. I built a few Otop12s and some Tuba45s with relative success. Those DR cabinets are so cool though, some day!

it does take a while! about 2 weeks each

i think mdf on a cabinet this size would have made it too heavy for me but i am interested in an A/B test when i make more. I made sure to get void free plywood and while cutting it down to pieces it seemed to be true to what was advertised

No, there's several reasons not to use MDF for P.A. systems. MDF doesn't hold up very well to constantly being moved around and can fall apart with moisture. It's also extremely heavy, especially in a design such as this. Acoustically cabinet resonance in a horn loaded design is not as crucial to the sound because of the way it transforms electrical energy to acoustic energy. Most professional sound system cabinets are built out of Baltic Birch which has excellent build qualities. Also, notice how well braced this design is. All of the panel resonances are well above the passband.

@@jjzamo BB ply is the way to go but it's pretty expensive and hard to find right now. But I'm sure you know that....

nice! how did you design? hornresp?

@@jjzamo Thank you. No, I designed it with AJHorn. That worked very well 👍

@@mahatma_manett good find - thanks for the tip. you gotta get a video up of your sub in action

@@jjzamo Unfortunately I only have photos of the building process and as it is being installed with its wall mounted satellites. Configured with the SEAS 18TV2 coaxes.

Hey that's fair, I just threw this together for the folks I was building these for and never expected the video to gain any traction. These are bill fitzmaurice tuba-60's, 15" wide with eminence lab 12 drivers. We've built 16 of these to date so it's safe to say we love them. you can run 4 of them off a QSC PLX3102 amp. They are a bit boomy above 100hz, 80-100hz has been the preferred crossover area. We roll them off around 30hz to protect the drivers and they confidently hit down there. the horn is close to 12 ft so your drive rack needs a big time delay range. even if I posted sound it just wouldn't translate well. But one or two of these subs can crush my 2 car garage and would be more than enough for a little club. hope that helps have a good one

@@jjzamo Use the Crown K2 amp. you will get much better results. No kidding.

@@jjzamo This came up as a random suggestion in my feed. It might be good to give some love to BFM in the title. There's nothing wrong with T60s. From personal experience I can tell you they hold their own in sound quality to any of the other big names.

@@bwtaudio hey i agree, i tried to change the title of the video once it gained some traction but my youtube creator studio seems like it's not fully functional with my browser. i really had just made this video for fun for the folks i was building these cabinets for, never expected anyone else to tune in

@@jjzamo hey you mentioned you were building them for people, out of curiosity, what did you charge them per box (not including materials)

I usually cutoff between 80-100 on these. they're a little boomy at 120

I gave you a dislike. “Show how it sounds”. First: Ears cannot hear! Second: If you ment a recorded test, unnecessary on KZbin, don’t you think?

@@mahatma_manett calm down Its a Sarcasm

thank you! these really challenged me

@@jjzamo Are you satisfied with the way they sound?

@@gustavoramirez-rangel5773 They do sound good! we EQ'ed to taste to even out some frequencies, and high passed at 80hz when paired with tuba60, but overall impressed with the output

@@jjzamo I will build 4 of them. Thanks

@@gustavoramirez-rangel5773 nice! i do think it's worth doing the melded array for the bottom of the stack, great horizontal dispersion but twice as much soldering. let me know if you need anyone to troubleshoot with

Is this not a bill fitzmaurice design? tuba 60

good eye, yes it is

@@jjzamo :), how they perform?, I'm building 4, 2 20" Lab12 and 2 27" Lab15

@@flashero they're great! it's a mobile setup so the single wide makes it easier to move. would love to hear some with the lab15

@@jjzamo Nice, how much people you cover outdoors?, I waiting to finish the build and test and meausure them.