Vertical stacking is there a limit?

[Thumpin6string]

I believe the sky's the limit.

 

[telecopy]

What is considered overkill for example two 410s stacked vertically sounds louder than side-by-side. Now my question is let's say we have an 810, would eight individual 10" drivers stacked vertically sound louder than your standard 810?

For those who already know me on this forum, as you can see I am sober and clearly ready to learn some theory on speaker amplification and sound waves, for the next 15 minutes at least lol

Awesome stackable little fella..

 

[ThinCrappyTone]

And possibly dangerous!

so rock n roll!

 

[wunderola]

Lat year, the band Lamb of God toured with four sets of two 8x10 cabs stacked vertically, and eight sets of three 4x12 cabs stacked for guitar. It was overkill at its best, who knows if they even had all those speakers on ... But it looked cool!

 

[J-Bassomatic]

Your mind is actually in the right place for certain things. A lot of people want to have microphones or loudspeakers that focus, like a lens on a camera. In theory, that's possible, but...(I've done the calculations*) to get a loudspeaker array to focus as well as a cheap camera does for visible light (1 cm lens) at 20 Hz, you'd need a loudspeaker array that's circular, and...200 miles in diameter - which is larger than the atmosphere. As you've pointed out - by 8 or 10 miles up, you're running out of gas (literally).

*One of the hazards of being a Physicist is you calculate these kinds of things - for fun.

OUT OF GAS???? I can only hope!

 

[swarfrat]

What if it's an outdoor gig?

I believe the sky's the limit.

Definitely in the outdoor case, they sky is the limit. Both literally and figuratively.

 

[telecopy]

Lat year, the band Lamb of God toured with four sets of two 8x10 cabs stacked vertically, and eight sets of three 4x12 cabs stacked for guitar. It was overkill at its best, who knows if they even had all those speakers on ... But it looked cool!
View attachment 2806716

 

[JWH91]

I’m not going to add much in the way of theory, but from a subjective point of view I have a few thoughts. I’m going to assume that with that much horse power, you are playing larger venues with a FOH system. That being the case, and you are having trouble hearing yourself, take a look at your EQ. If you are scooping the low mids and boosting the super lows that may be your issue. I use 2 210 cabs stacked and power each with 300 watts and I have zero problems hearing myself, and also find I have an agreeable amount of low end thump. That’s playing outdoors and concert hall venues. What else I found is that the sound guys are always really happy with me not creating problems for them.

If you are playing ambiently with guitar turds, and a drummer that plays with telephone poles, maybe a 2nd cab is needed, but you will also need hearing aids soon, so try stacking the the 2 810 cabs lying on their sides ( max floor contact is great for bass).

Also, you will get more sound having your cab flush on a wall, and or in a corner.

I have a lh1000 my mids are scooped no matter what. I'm steadily solving that with my line 6 pod though. Been dialing in the sound for the past week

 

[JWH91]

Awesome stackable little fella..
View attachment 2806685

Sweet Jesus if I had 10 grand I'd stack 8 of those no problem

 

[JWH91]

Lat year, the band Lamb of God toured with four sets of two 8x10 cabs stacked vertically, and eight sets of three 4x12 cabs stacked for guitar. It was overkill at its best, who knows if they even had all those speakers on ... But it looked cool!
View attachment 2806716

Lamb of god is overkill in every sense, I'm partial to screams myself and being a vocalist who can do gutterals and kvlt screams I gotta say, this whole band is talented asf. Underrated, but metal isn't Katy perry so you won't hear them on the radio

 

[FunkyD]

View attachment 2806732

I assume you've used this photo with Gene's permission.

 

[JWH91]

I assume you've used this photo with Gene's permission.

Hahaha that's funny coz he's jewish

 

[agedhorse]

There's lots of disinformation in the replies here. None of the claimed negatives about line sources are true, if the array is correctly engineered. This paper explains how to engineer them: http://www.audioroundtable.com/misc/nflawp.pdf

Where bass cabs are concerned true line arrays operating in the nearfield would be way too high to be practical. The Dead Wall of Sound worked well enough, but it wasn't at all practical. They needed two of them, one for the gig they were playing, the other leap frogged ahead to the next gig, because it took two days at least to set it up. We still use the same tech, but just with the PA.

Rick, this is simply not true in the real world.

The effects of different vertical path length interference is very real and is even addressed in that paper BUT the paper is for domestic stereo system type applications and a concave baffle is not a suitable solution because it affects necessary coverage in the vertical plane. In live audio (this forum generally deals with live amplification of bass guitar), listeners are not located in a single ideal listening point, therefore the problems absolutely remain.

I spent about 10 years working on commercial line array products, I know very well first hand the challenges that line arrays present and the types of venues the work/don't work well in and why. Many line array products have been sold based on buzz words, when a horizontal array, exploded array or even point source might have resulted in better results.

 

[Jeff Scott]

I think the logic of the wall of sound bass column was that its a high as the lowest notes fundament wave is long. IE 28 feet?

I thought that concept, as far as the real world goes, had been dispelled a long time ago.

...The Dead Wall of Sound ..... They needed two of them, one for the gig they were playing, the other leap frogged ahead to the next gig, because it took two days at least to set it up.

IIRC, there were four systems on the road.

...Sounds like just the kind of thing Owsley and his buddies would have thought about...

Have you read Blair Jackson's book Grateful Dead Gear? I am not a deadhead at all, yet I found the book fascinating on many levels.

It's dawned on me that the limit would be where the atmosphere would be so thin that sound waves wouldn't carry very well, maybe 8 or 10 miles high...

I can't remember which band it was that was so loud they had their amps in orbit pointing back at the Earth.

*One of the hazards of being a Physicist is you calculate these kinds of things - for fun.

I bet your bedmate(s) love you for that.

 

[Jeff Scott]

Hahaha that's funny coz he's jewish

Your point?

 

[FunkyD]

Hahaha that's funny coz he's jewish

Ummmm....no.

But please...tell us all how you arrived at that conclusion.

 

[Downunderwonder]

I believe the sky's the limit.

Us bassists should get into the space elevator business. Stack up all the 810's and 2x15's in a giant heap and just walk up to space. So easy. I don't know why nobody thought of it before.

 

[Ric5]

Vertical stacking is there a limit?

YES ... THE CEILING

 

[BtaylorTheRogue]

If the top of the next-to-top speaker is lower than your ear, stack it up! If you’re 7 foot tall, an 8-10 foot stack is totally okay.

 

[JWH91]

Ummmm....no.

But please...tell us all how you arrived at that conclusion.

Really? Sheesh maybe it's because I grew up with my best friend being from a Jewish family lol his parents always joked about how their lawyer was their best friend and that I better not use something without permission or they'll sue, I don't want to bring up the ass end of our society here, but it's this kinda "politically correct" bs that made us all so sensitive to crude humor and honestly has ruined today's music. I hate it. Activism has been replaced by safe zones and words that "hurt". Rant over, let's continue with the speaker shizz