stacking speakers cabs and stereo

[mikes vintage service]

the advantages of stacking speakers vertical is very cool.
I am working with an old organ at my church with five 3 way cabs all lined up on the loft floor. to lay them on there sides and stack all five could be done. would that preserve the stereo imaging? or would two stacks with about 8 feet between them be better? or any more understanding concerning how close stacks can be before the advantages are lost?
thanks mike

[billfitzmaurice]

the advantages of stacking speakers vertical is very cool.
I am working with an old organ at my church with five 3 way cabs all lined up on the loft floor. to lay them on there sides and stack all five could be done. would that preserve the stereo imaging? or would two stacks with about 8 feet between them be better? or any more understanding concerning how close stacks can be before the advantages are lost?
thanks mike

Vertical stacking won't work well with any speaker, only those specifically designed to be vertically arrayed. Most are not.

[mikes vintage service]

i am going to just try some different arangments and hear what sounds best.
thanks
mike

[Randy L]

Probably the reason against vertical stacking is that the physical distance between the compression horns (tweeters) will introduce a lot of comb filtering and uneven dispersion.

If vertical placement is a must, try placing the top speaker upside down on the bottom one.

Though it make look unusual, the tweeters will be much closer together for a smoother sound. If you place them side by side, sit them upright next to each other, or or on their sides with the cabinet tops against each other

[billfitzmaurice]

Probably the reason against vertical stacking is that the physical distance between the compression horns (tweeters) will introduce a lot of comb filtering and uneven dispersion.

Only on the vertical plane, which is moot.

If vertical placement is a must, try placing the top speaker upside down on the bottom one.

Though it make look unusual, the tweeters will be much closer together for a smoother sound.

Correct.

If you place them side by side, sit them upright next to each other, or or on their sides with the cabinet tops against each other

Side by side is when you get combing on the horizontal plane, and there's no cure. And that's why cluster arrays have completely disappeared from pro-touring sound use.