OK or NOT for amps to be on a Sub box??? & Small size Amp sugestions

[Roland 10+ year member]

Is it Ok to mount a amp on top of a SUB box? (10" sub for Sound Quality, no real thumping stuff)

Not sure if the vibration will hurt the amp.

The reason I ask is space concerns.

If i can mount the amp on top of the sub box amp size opens up to 20" X 11 footprint. (this sub box will be built to fit between the front seats)

If not, the space under my Honda odyssey power seats is tight (there is a bar that breaks up the space) The max opening is 14" by 8"-9"ish.

I want a 5 channel amp, but if I have to fit it under the seat/ seats i will have to do 2 separate amps, one under each seats. I don't know of any good 5 channel amps that are shorter than 14". (qualify that, Under $300-ish with 100 watts RMS)

My Amps in consideration are the

5 channel - Massive Audio NX5 (15" long to mount on the sub box)

4 Channel - Precision Power P900.4 (under 1 seat the highs and mid driver & another small PPI to drive the 10" sub)

Any other suggestions on Amp options would be aperciated

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[gckless 5,000+ posts]

This has been discussed a bunch before. You should do a search for it.

 

[Chriszle 10+ year member]

It is best not to.

 

[Full Tilt 10+ year member]

This has been discussed a bunch before. You should do a search for it.

x2. The search function is in the upper-right hand corner of the page. Just search 'Amp on box' or something along those lines, you'll get plenty of results for what you're looking for. I personally don't think it does too much damage, but it'd safer to just put it somewhere else.

EDIT: Here ya' go! Let me google that for you

 

[Roland 10+ year member]

This has been discussed a bunch before. You should do a search for it.

I guess your talking about the mounting question. I did searched back 5 pages and found nothing about amplifiers mounted to sub boxes. At least not in the thread tittles. Key word searches did not narrow down anything ether. A Google search did work, I should have checked there first, Thanks.

I listed the amps to be specific, as if maybe the Small Class D are less susceptible to damage from small vibrations. That may have been naive on my part.

 

[-01limited- 10+ year member]

All the threads like this go back and forth. Some people say it works for them, others, like myself, have had amps **** up and had them mounted on the box. If you have too and need if for the space find some soft rubber to put under the mounting feet to try to take some of the vibration out. I've even thought about a sponge, dont know if it would do good or not though.

 

[gckless 5,000+ posts]

All the threads like this go back and forth. Some people say it works for them, others, like myself, have had amps **** up and had them mounted on the box. If you have too and need if for the space find some soft rubber to put under the mounting feet to try to take some of the vibration out. I've even thought about a sponge, dont know if it would do good or not though.

People say this all the time, and I find it absolutely rediculous. Your amp is directly coupled to the box via the screw/bolt that you mounted it on there with. Those rubber feet are hard, and if they're soft enough to actually absorb anything, then your amp will be chattering between the rubber washer and the screw, which is even worse.

 

[-01limited- 10+ year member]

People say this all the time, and I find it absolutely rediculous. Your amp is directly coupled to the box via the screw/bolt that you mounted it on there with. Those rubber feet are hard, and if they're soft enough to actually absorb anything, then your amp will be chattering between the rubber washer and the screw, which is even worse.

Ok. Vibrations through 4 single screw's/bolt's is going to be a lot less than the vibrations if the whole amp was touching. You ever see the little foam squares or pieces they put on say cabinet doors to keep them from hitting? Those are ideal to put between any metal you think will rattle. And I didnt say put a rock between it, I said something soft enough to absorb it. Its actually worked good for people. //content.invisioncic.com/y282845/emoticons/fyi.gif.9f1f679348da7204ce960cfc74bca8e0.gif

 

[gckless 5,000+ posts]

Ok. Vibrations through 4 single screw's/bolt's is going to be a lot less than the vibrations if the whole amp was touching. You ever see the little foam squares or pieces they put on say cabinet doors to keep them from hitting? Those are ideal to put between any metal you think will rattle. And I didnt say put a rock between it, I said something soft enough to absorb it. Its actually worked good for people. //content.invisioncic.com/y282845/emoticons/fyi.gif.9f1f679348da7204ce960cfc74bca8e0.gif

I see what you're saying, but you can't really compare it to the foam in between cabinets or metal. The pieces in there are meant to reduce chatter against each other, not necessarily the vibrations that are transferred. And like I said, I'm pretty sure if the rubber is soft enough to actually absorb vibrations, then the amp is going to be bouncing between the rubber and the screw. Otherwise, you need to have it screwed down hard enough to make the rubber virtually obsolete. I don't doubt it's worked for people, and I have used it in the past, but how do you know they wouldn't have had the same results with just some metal washers? I don't know, I'm not saying it's complete stupidity, I'm just saying it's not everything people chalk it up to be.

 

[Roland 10+ year member]

Thanks, For the feedback on the sub mounting.

I guess the answer to second part of my question is no.

On weather they make a good 5 channel 100 RMS amp that could fit under my set 13" X 9" or smaller footprint $300ish