Great Job Michael, thanks for sharing. Being a bass singer and an audio engineer it’s always awesome when the subs are just right. Subs are always the foundation. Great job on this foundation.

That is an amazing implementation, you took the opportunity to set up those “weird” configurations. I like the idea of subs on the ceiling, it looks very clean.

This is incredible, thanks so much for sharing your experience!

I’m not one to comment, but your videos are amazing. I have a huge passion for Live Audio, and I am so lucky to come across your channel to learn more and more! Thank you for your hard work!!

Hey Michael, I discovered your channel a few days ago. I just subscribed! This video was probably the 3rd video I watched. But I work as a Tech Director at local church. We have a PA system that’s 10 years old and is on its last leg. I started a design in Ease Focus 3 deploying a QSC LA112 rig. I would love to hire you look over my design. This not rush project, realistically we would probably do the upgrade in July or August.

Your work are amazing…thank you for sharing your knowledge.

Great video! Loving all your content! I see all your hard work you drive into your clients. Might have to hire you here soon also! I would love to have a system designed by you! Keep up the great work!

Wow, very impressive! Awesome job!

This was another gem, Mr. Curtis! Probably way beyond anything that I'll ever be involved in, but a total geek-out for a live audio fanboy. On related note, perchance do you have any content in which you discuss your background? I watch these vids and I find myself wondering, "how DOES he know so much at the ripe age of... I'm guessing 23??" (I jest of course, but seriously, you do look young!)

Hey Michael, first of all, thanks for another great video! It is one that raises a question I've had in my mind for quite some time regarding flown vs. ground positioned subs. There seems to be an opinion amongst many audio engineers (as well as system engineers for that matter) that flown subs should in best practice always be accompanied by at least some ground placed subs as a sort of fill, or else there will be a loss in impact and/or focus of the low end. It is a statement that I personally can't really see the logic in and on the few occasions that I have been mixing on a rig with nothing but flown subs I haven't really found an issue with it either, but rather enjoyed it since the low end I perceive at FoH is a closer representation of that perceived close to stage, in comparison to that of a classic approach with subs positioned only on the ground. In terms of SPL the low end will obviously have a lesser impact in front in relation to further back in the audience with nothing but flown subs (not in comparison to itself, but in comparison to ground placed subs), but this is the whole point of flying the subs in the first place - a more even coverage. As long as there's enough power in the subs to, by increasing their output, have them compensate for that loss in the front this should theoretically not be an issue. The only argument I myself can come to think of that supports this opinion is that one gets more direct sound from the ground placed subs before any room reflection blends in with it in comparison to the flown subs. This, however, would again only benefit a selected few first rows in the audience and not contribute to a more coherent over all soundscape in the room. Maybe I answered my own question here but if you have additional thoughts or opinions on the subject I would be glad to hear them. Cheers

Great video, as usual

Love this. What modeling software do you use for initial proof of concept? Is it manufacturer specific?

Great stuff Michael! Quick question on the dual 18s facing each other. What is the math behind the spacing between the two facing each other being 6 inches apart?

Great stuff Michael! I'm in a similar situation with subs on each side of our stage which runs the width of the room (about 100ft). We're currently running the entire system in mono and I'm getting some major power valleys near the front center of the room (just by ear). I'm working on rewiring to run stereo and thinking about running different low end sources to each side (kick-in to the left and kick-out to the right, etc.) to try and minimize these valleys without getting new gear. Thoughts on this? I think Dave Rat said he does this for some shows he's done, figured I'd give it a try.

Fire!!! 🤌🏾

LOVE learning so much about sub arrangement from your videos. I run small local shows, and I run the KS212C's, which are incredible for easy cardioid setup and mitigating stage noise. I'm curious if it would be worthwhile in smaller rooms that are longer than they are wide, if it would be beneficial to split those subs that 5.5 feet to narrow the overall pattern to minimize wall bounce? Is it worth it? Also, if I were to split them, would they need to be centered? Or can I just aim them towards center? Thanks for everything you do on here!

wow awesome

I would like to hear your live performance sounds. Not only theory 😢

At 10:30 I started to think in terms of flipping the room over so the ceiling is the floor, the subs are on the ground and the audience is on the ceiling. Usually we don't think about the fact that a ton of low frequency energy bounces off the floor and goes straight up. Did any additional calculation go into taking advantage of the ceiling reflections to focus more downwards? I can see the ceiling is pretty close, looks like 12" max from the top of the cabinet, let's say the cabinets are 26" tall, that gives a 25" distance from the center of the drivers to the ceiling. Correct me if I'm wrong but that means the reflection straight down would be delayed 1/4 wavelength at 67hz, but that difference would increase as the angle changes as you walk towards the back. I'm not sure if any of this was part of your strategy but this is where my brain went. Did any additional thought go into projecting downwards or accounting for the ceiling height?

This church is in Carrollton, TX right? Which church is it? I'd love to go visit and take a listen to the system since I'm in that area.

How did you deal with the rattling noise of the roof?

I would be scared to sit in there with those massive subs placed over my head! Weren’t you getting rattling noises? From the pictures, to me it looks like the subs will make everything shake and rattle around them.

Is there gonna be an issue with the subs close to the roof and rattling of the roof...?

Hey, thanks for this info but i cant download the spreadsheet

Is it possible and Curtis approved to use this front sub-array design and instead of flying them put the subs under the stage?

I’ve always been told, and certainly felt like, subs on the floor, coupled to that surface, made the low end more…felt, for lack of a better word. Based on this design, do you believe there is any loss in “thump”, especially that 60hz-ish kick?

Newbie here trying to understand sub arrays. Watched a few of your videos including the ones on the inline gradient array and the inverted gradient array. The delay stack looks like an inline gradient array, but what is configuration of the main stack with the boxes facing each other?

👏👏👏

So your reason for doing the subs like that was to keep the low end in one palace for a deeper low end and it doesn’t travel all over that room.

Here to confirm Michael Curtis identifies as a Pioneer 👏🏾

Very unconventional and interesting

How was rigging approved? Afaik SRX728 is not rated to be flown.

How would I array 3 jbl dual 18’s to get a cardiod pattern or can you?

RELAY? or delays

subs on the roof increase gravity? lol