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Topic: Stacking amps on top of each other |
Gerald Shaw
From:
Florida, USA
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Posted 16 Jun 2017 1:02 pm |
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Aside from having the top amp falling off, is there any reason why I shouldn't put 1 amp on top of another. Looking to save floor space. Thinking maybe the vibrations from one of the amps might not be good for the other one?
I know 2 amps on at the same time can cause a hum but I've got a hum-x thing to defeat that. Sometimes I will have 1 or the other on, and sometimes both. Thanks. |
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Mike Brown
From:
Meridian, Mississippi USA
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Posted 16 Jun 2017 1:13 pm Two amps
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| Nothing that I can think of until there is a problem. |
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Lane Gray
From:
Topeka, KS
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Posted 16 Jun 2017 1:34 pm
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Unless you either have tall feet on the top amp or turn the bottom amp on its side, there can be a stability issue with the handle of the bottom amp sticking up.
That's the only issue I've seen. And it's easily addressed.
_________________
2 pedal steels, a lapStrat, and an 8-string Dobro (and 3 ukes)
More amps than guitars, and not many effects |
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Jack Hanson
From:
San Luis Valley, USA
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Posted 16 Jun 2017 1:42 pm
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Works fine for me:
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Butch Mullen
From:
North Carolina, USA 28681
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Posted 16 Jun 2017 1:52 pm
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| Mike Brown said it's not a problem until it's a problem. Put my session 500 on my cube 30, now the cube is only 6" tall!!! |
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Pete McAvity
From:
St. Louis, Missouri USA
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Posted 21 Jun 2017 11:10 am
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Someone w/ actual knowlege should chime in and correct me, but you may actually get more bass response and increased sum volume by placing one atop the other vs. side by side. It may be a nominal (but measurable) difference. I've read that this is the case when using 4x12 cabinets stacked vs. side by side due to the combined resonance of the two- so the same theory may apply here. Then again, I could just be fabricating this.
_________________
Excel Superb D10, Sarno Black Box or Freeloader, Goodrich L120, Boss DD5, Baby Bloomer, 1965 Super Reverb chopped to a head, feeding a mystery PA cab w/ a K130.
They say "thats how it goes". I say "that ain't the way it stays!" |
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Jim Cohen
From:
Philadelphia, PA
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Posted 21 Jun 2017 11:21 am
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Some amps have vents on the top to discharge heat. You wouldn't want to block those vents with another amp stacked on top.
Then, of course, some amps have the controls on the top, but you already know that...
_________________
www.JimCohen.com
www.RonstadtRevue.com
www.BeatsWalkin.com |
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Chris Boyd
From:
Leonia,N.J./Charlestown,R.I.
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Ed Boyd
From:
Illinois, USA
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Posted 21 Jun 2017 1:12 pm
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| Pete McAvity wrote: |
| Someone w/ actual knowlege should chime in and correct me, but you may actually get more bass response and increased sum volume by placing one atop the other vs. side by side. It may be a nominal (but measurable) difference. I've read that this is the case when using 4x12 cabinets stacked vs. side by side due to the combined resonance of the two- so the same theory may apply here. Then again, I could just be fabricating this. |
This is true. You could really tell the difference in the bass response of a Leslie if it was lifted off a floor. I elevate my guitar amps using the roadcases as amp stands and do not mind the loss of bass response because everything is mic'd and the PA does all the heavy lifting with what comes off the speaker. |
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Steven Paris
From:
Los Angeles
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Posted 21 Jun 2017 4:22 pm
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| Jack Hanson wrote: |
| Works fine for me: |
Nice Stack, Jack
_________________
Emmons & Peavey |
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Chris Walke
From:
St Charles, IL
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Posted 22 Jun 2017 6:03 am
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| As for top vents/handles/knobs....Stack both on their sides? |
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Eric Dahlhoff
From:
Point Arena, California
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Posted 22 Jun 2017 7:39 am Hum from bottom amp
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When I put my Blues Jr. on top of my Steel King, the reverb circuit on the BJ was overwhelmed with 60 cycle hum from the massive transformer in the SK.
_________________
"To live outside the law you must be honest." (Bob Dylan) |
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Mike Brown
From:
Meridian, Mississippi USA
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Posted 22 Jun 2017 8:35 am Stacking....
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| Butch(Houston), we have a problem then. Ha ha! |
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Scott Denniston
From:
Hahns Peak, Colorado, USA
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Posted 24 Jun 2017 9:27 am
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| Long ago in a previous incarnation I would stack a Vegas 400 on top of my Session 500. I didn't really use it for that "stereo" effect but ran any fx through the top amp and the bottom amp was clean & dry. I had tried a bunch of different configurations at the time and it seemed that this one maintained the most punch and clarity while being able to dial in just the right amount of fx. I never had any problems with stability or anything. This was probably one of the best sounding and simplest rigs I've used. Although I'm diggin the Kemper quite a bit now. Still don't have it quite nailed in yet but it's getting better as I get time to mess with it. |
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Ken Metcalf
From:
San Antonio Texas USA
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Posted 24 Jun 2017 3:25 pm
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The Twin Deluxe set up ^_^
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Gary Meixner
From:
New York, USA
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Posted 24 Jun 2017 4:29 pm
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Gerald,
Are you running the same signal through both amps - using them at the same time? When driving two speakers from the same source there is a definite difference in angle of dispersion between speakers set side by side vs. one stacked over the other. Surprisingly stacking will give a wider dispersion angle and I think more even tone response. I am not sure if this will be true when running the same signal through two different amps. Of course if you are running different signals through the amps at the same time either stacked or side by side there may be other issues such as comb filtering etc. If the amps are being used one at a time I can't think of anything other than what has already been discussed.
G. Meixner |
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b0b
From:
Cloverdale, CA, USA
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Posted 25 Jun 2017 8:46 am
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Back when we had to get loud on stage, I routinely stacked a Mesa/Boogie on top of a Webb. It was a great sound. I never had a problem with that setup.
Nowadays I don't have a compelling reason to haul two amps to a gig. Any big venue, and even many small ones, are miking the amps. Having two amps just confuses the sound man, especially when the amps have different tones. They don't want to deal with two channels for the steel player.
_________________
-𝕓𝕆𝕓- (admin) - Robert P. Lee - Recordings - Breathe - D6th - Video |
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Terry Barnett
From:
Winnipeg Manitoba, Canada
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Posted 26 Jun 2017 5:18 am
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Compelling reason...right bOb. Get in and get out and definitely don't confuse the sound guy 
What I see are amps that have open backs. You can stack them up but don't have them right against the wall or should I say too close to the wall. Obviously the sound will better and fuller when they're out a tad.
One small problem might be reverb springs rattling. That can drive you nuts. |
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Edward Rhea
From:
Medford Oklahoma, USA
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Posted 26 Jun 2017 9:40 am
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I'm diggin your setup there, Ken!! 
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“TONESNOB” |
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John Billings
From:
Ohio, USA
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Posted 26 Jun 2017 10:09 am
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Dr. Z uses large diameter rubber feet. Much more stable. Don't know where he gets them, but they shouldn't be hard to find. I use them on my Johmson-cabbed split Twin.
_________________
Dr. Z Surgical Steel amp, amazing!
"74 Bud S-10 3&6
'73 Bud S-10 3&5(under construction)
'63 Fingertip S-10, at James awaiting 6 knees
'57 Strat, LP Blue
'91 Tele with 60's Maple neck
Dozen more guitars!
Dozens of amps, but SF Quad reverb, Rick Johnson cabs. JBL 15, '64 Vibroverb for at home.
'52 and '56 Pro Amps |
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