Could a rack box hold the weigt of a cab?

[john]

As some of you may know i run two 1 15s .
i kind of want the top speaker a bit closer to head height.
so i was thinking i could have 1 15 on the ground (as usual ) with my amp on it, then the other cab on top. the cabs weigh about 15-20kg i guess .
my amp is in a rack . do you think it could take the weight?

cheers for any thoughts

[nzsimon]

yes

[beagle]

First question... are you wearing high heels or flats? ha ha nah just jokes
Yep those rack boxes are v strong so you'd be sweet.
You could also put some casters on the bottom 1x15" if it hasn't already.

[john]

Thanks for the replies Simon and Steve .
As for the heels, do platforms count .
No I don't have casters , I like the extra bass (ground coupling ) you get when the cab is on the ground .
So my rig is going to look stupid from now on. yeah!

[Crazykiwi]

my answer would be yes but tempered with 'how long for'? For the long term I wouldn't recommend it. Having your amp sandwiched between the cab and the floor might shake a few things loose inside.

[john]

No it is sandwiched between two 1x15s . I don't do it any more as I have a bigger cab and the whole thing is higher. but I guess it could still rattle some solder joints being on top of the cabs?

[sonicfantom]

Will the rack hold the weight? Probably. Those things are built pretty solidly.

I'm interested to know what sort of intense vibes that thing's going to have to put up with, though.

[bassnut14]

looks like it could hold the weight of a tank.

[model.citizen]

yr not running tubes in that head, so it should be fine in a sandwich, vibration-wise.

[john]

Yeah no tubes, and yeah she is a tank. The guy who designed the amp told me

One fell out of a van on the motorway and all that needed replacing was two of the plastic corners.

Pretty crazy

[ryanmaiden]

I wouldn't be too concerned with the vibrations, the rack case and chassis of the amp should dampen things sufficiently. As somebody who tests electronics while they are strapped to a vibration table, I can tell you that it takes A LOT of vibration before anything serious starts happening.

[BluesBass]

i kind of want the top speaker a bit closer to head height

This may be a silly question, but... why?

[john]

So I can hear it better without having to turn up and have the sound go past my legs. Which would just get into everyone else in the bands ears and not mine, If you know what I mean

[BluesBass]

So I can hear it better without having to turn up and have the sound go past my legs. Which would just get into everyone else in the bands ears and not mine, If you know what I mean

Sure.
I was wondering if it was a "stage sound issue".
I had a similar problem a while back and cleverer and more knowledgeable people than I gave me some good advice on the subject, which may or may not apply.

Before lifting your cab up (or going for the more power/volume route), have you considered that it may be an EQ issue?
Mine was... I had too much bass dialled in and not enough mids (eh... Steve?)

Also where you stand in relation to the cab is a factor.
Apparently a good rule of thumb is that the size of the speakers in your bass cabinet dictate how far away you should be.
If you have a single 15″ speaker then 15 feet (about 4.5 meters) in front of that speaker should be the ‘sweet spot’ where you can hear it best.
This works for any size speaker – a 10″ speaker will throw sound about ten feet ahead, and having multiples doesn’t change this (i.e. a 2 x 10″ cabinet will still sound better about 10 feet away, not five or 20 feet away).
Harley or any of the other cab builders might be able to confirm this.

Of course, you won’t always have the luxury of standing in the perfect spot.
Where you place your amp is also very important, due to the fact that bass frequencies are omni-directional and when reflected cause frequency cancellation.
So always put your amp close to wall but not touching it... about a foot away.

Too much low end thud means that you can’t even distinguish the notes you’re playing. Rather than boost HIGHS or MIDS to compensate try reducing the amount of bass.

I apologise if this is all stuff you know and I don't want to appear patronising, but lift your speaker to ear height seems a rather drastic solution IMHO.

[john]

Thanks for your reply. I don't think it is patronizing . It's all good info.
I'm not sure if you realize but I am using two cabs. (2x15 times 2)
I do not scoop the mids out of my eq and boost the bass. I run it pretty flat. But when the cab was to low(physically) the the low end is easy for me to hear but the mids and definition get lost, as you said.
Unfortunately I can't stand 15 feet away from my rig at practice more like 4 to 5 feet away. And this is the main problem really
So having one of the cabs higher makes it easier to hear.
But it is all sorted now since I got the other cab off Brent, The whole rig stands higher now