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Markbass CMD 121P speaker stand mod…

skipsinclair

skipsinclair

Feb 7, 2009
54
7
Brookline, NH
#1
Anyone ever consider trying to cut into their CMD 121P in order to integrate a speaker stand pole mount to the bottom, for running it up a standard speaker stand tripod? Would it throw off the acoustics by having a pole mount sticking into the speaker enclosure? Trying to find a good way to get it up to standing level… or am I just overthinking this, and a standard tilting amp stand is enough? Thinking back to my high school days when I had a GK on a bracket attached to a very heavy duty cymbal stand…
 
#5
Yes, I did it once. It worked really well.
IMG_0155.jpeg
 
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#7
May be good for monitoring, but you are going to lose a great deal of floor coupling and bottom end.

Since bass frequencies are non-directional, this is the worst possible configuration as the low end goes in all directions - you lose what is not pointing at the audience. On the pole, the amp is trying to play to a complete sphere (all directions) . On the floor it is only a half-sphere, and in a corner it is a 1/8 sphere - the most efficient.
 
#8
It can be done. Remove the speaker to strategically position the mount as far foretaste possible to keep the amp’s mass directly over the pole. I’ve done this with many speakers without any audible degradation.
I use a Markbass 112 combo often. My solution to elevate that amp is to use a matching 112 extension speaker. My stage footprint is smaller than using a tripod.
The option to plug it in is always there and often welcomed.
 
#9
skipsinclair said:
Anyone ever consider trying to cut into their CMD 121P in order to integrate a speaker stand pole mount to the bottom, for running it up a standard speaker stand tripod? Would it throw off the acoustics by having a pole mount sticking into the speaker enclosure? Trying to find a good way to get it up to standing level… or am I just overthinking this, and a standard tilting amp stand is enough? Thinking back to my high school days when I had a GK on a bracket attached to a very heavy duty cymbal stand…
Click to expand...
There are amp stands. You don't need to put it on a pa tripod.
 
#13
Bassamatic said:
May be good for monitoring, but you are going to lose a great deal of floor coupling and bottom end.

Since bass frequencies are non-directional, this is the worst possible configuration as the low end goes in all directions - you lose what is not pointing at the audience. On the pole, the amp is trying to play to a complete sphere (all directions) . On the floor it is only a half-sphere, and in a corner it is a 1/8 sphere - the most efficient.
Click to expand...

@Bassamatic brings up a really important point about how much you lose by de-coupling the amp from the floor. But the fact remains that if you keep your amp on the floor, it's hard to hear yourself. If there's a perfect solution for this, I'm not aware of it. Is anyone?
 
#16
dreamadream99 said:
I mounted my combo on a speaker stand using an external mount such as this:
View attachment 5235326
The nice thing is no hole necessary. Only four tiny holes for the screws.
Click to expand...
External brackets are good if you're not keen on punching a large diameter hole in your cab, but there is the issue of not being able to set the cab on that face when transporting it or when not using the tripod. A sort-of solution is to mount two 1/4-20 T-nuts inside the cab and attaching the bracket using thumbscrews through the two elongated slots. Then it's fairly easy to remove the bracket to get it out of the way when that's called for.
 
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