TC Electronics RH750 / RS212 Stacking Options 1x1 OK, what about 1x2

[Scogman]

My TC Electronics RH750 amplifier and RS212 cabinet were delivered the other day and I must say I really like this setup. In the past I've been a 15" and 18" guy. This RH750/RS212 really has a tone I like.

I like the idea of being able to vertically stack 2 RS212's for when more oomph is needed.

So here's my goofy question: When stacking them up vertically, should they be both oriented right side up, or should the bottom be right side up and the top be upside down?

REASON I ask: I've seen a lot of discussion about mid-range dispersion with cabs, as well as fEARful discussions about mirroring a like cab and flipping it over to *vertically line up* midrange and tweeters and *to get them as close together as possible * <--- This last statement is why I'm asking this question. I understand that the tweeters will be vertically aligned regardless, my question is around the proximity of the tweeters making a difference.

On the RS212 (and the 210) the top speaker has the tweeter in the middle of the driver. Notice the picture below and see if you can tell that the middle of the lower driver is slightly larger than the middle of the upper driver. My question is around does it make sense to try to get the two drivers with the tweeters in the middle as close as possible? Will it make any noticeable difference? Or do I just turn the tweeter off of the bottom cabinet?

Don't want to get into the mixing 212 and 210 cabs here. I would go with all 212's.



Now for a more rig-of-doom-like oriented query: See the pic below, make any sense stacking 3 cabs like that? With the TC RH750 head I can put up to 3 TC cabs (or two other cabs that make 4 ohms from other manufacturers) I know I can lay them on the side and I've seen a pic on talkbass like that before. But to get max height I figure I would ask if this could be a way to go without experiencing any dispersion issues.



The upside of this config, if possible, is that it resembles the top of the Empire state building. I could then get a stuffed gorilla to sit on top and play like its a *King Kong Rig-Of-Doom* or something like that.

TC Electronics | RH450 | RH750 | RS212 | RS210 | RS410

[billfitzmaurice]

Originally Posted by Scogman

The upside of this config, if possible, is that it resembles the top of the Empire state building. I could then get a stuffed gorilla to sit on top and play like its a *King Kong Rig-Of-Doom* or something like that.

The downside is you now have drivers side by side and you can kiss your midrange dispersion goodbye. Don't do that. Besides, adding a third cab is totally unnecessary.

[jkramer5]

Originally Posted by billfitzmaurice

. Besides, adding a third cab is totally unnecessary.

Rocco says necessary lol

[llamalor2112]

So how about apply the two concepts and on one of the two cabs on the bottom, flip one upside down? No more of the side by side same drivers

[Mendry37]

Originally Posted by jkramer5

Rocco says necessary lol

Rocco must have the volume knob at 1 - 1.5. ha.

I would also like to know the answer to your questions Scog.
Chad

[Scogman]

Originally Posted by billfitzmaurice

The downside is you now have drivers side by side and you can kiss your midrange dispersion goodbye. Don't do that. Besides, adding a third cab is totally unnecessary.

@billfitzmaurice: Bill, thanks for the confirmation I was suspecting as much.

The 3 cabs was more of a whimsy/humor part of the post (KingKongRigOfDoom). The reality is I don't foresee ever needing more than a vertical 2-2x12 stack. Probably 95% of the time 1-2x12 cabinet will be plenty for what I'm doing.

Regarding the top part of the post, any difference in the upper cab being upside down to get the tweeters closer together? Or is dispersion issues more of a midrange thing and tweeters not so much?

[Scogman]

Originally Posted by jkramer5

Rocco says necessary lol

I guess if one were to add a third cab to this the 2x212 with 1x410 would be the more doomy rig-of-doom config.

[billfitzmaurice]

Originally Posted by Scogman

any difference in the upper cab being upside down to get the tweeters closer together? Or is dispersion issues more of a midrange thing and tweeters not so much?

It's not a dispersion issue, as they're on the vertical axis. But they will sound better with the top cab inverted, placing the tweeters closer together rather than further apart.

[Scogman]

Originally Posted by billfitzmaurice

It's not a dispersion issue, as they're on the vertical axis. But they will sound better with the top cab inverted, placing the tweeters closer together rather than further apart.

Thanks much Bill. I guess the folks at TC, even if they know it sounds better inverted, at shows and in photos still stack both cabs upright for looks and also so they don't have to answer questions about the acoustics of the inversion to so many, as you so patiently do here on talkbass. I appreciate your input and insight as I know many here on talkbass do as well.

[Munjibunga]

Originally Posted by Scogman

Thanks much Bill. I guess the folks at TC, even if they know it sounds better inverted, at shows and in photos still stack both cabs upright for looks and also so they don't have to answer questions about the acoustics of the inversion to so many, as you so patiently do here on talkbass. I appreciate your input and insight as I know many here on talkbass do as well.

The difference in sound probably isn't discernable in a gig situation, and certainly not discernable in a NAMM situation.

[Dekker]

The dispersion problem arises when the midrange/tweet is not vertically aligned. If they are vertically aligned (and assuming you are standing) then you will not perceive any problems. If you put two of these cabs side-by-side, then the two midrange speakers will cause interference with each other.

The fEARful speakers use flipped/mirrored stacking because their midrange/tweeter is off-center, and flipping/mirroring brings the midrange/tweeters closer together to minimize any interference. You will note that with properly stacked fEARfuls the midrange/tweet is vertically aligned, and very close together.