Amp vibrating off cab....any cures..?

[jonnythenotes]

What sort of amp and cab do you use Chris....?

[chris_b]

I'm using a Bergantino CN212 and before that I had 2 AE112's and 2 AE210's.

No vibrations at all.

For amps these days I'm usually playing my Aguilar TH500 or the Thunderfunk 750.

We're not quiet.

[jonnythenotes]

Sounds reeeaaaallly nice..... The vibration I get is not like a fifties washing machine on a spin cycle...Think Uncle Buck..., more like a very fast dentists drill type thing. The main problem is a light weight amp....Epifani PS 6000, which has sort of small hard rubber feet which does not have the weight to hold itself in place. The cabs I use are 2 Ashdown ABM Neo 4x8's, stacked, which are the best I have ever owned... and can handle anything I throw at them as they are rated at 1000 watts each. It's just the small surface contact area of the feet, and the weight of the amp, (or lack of ) that cause this problem, which has been fixed for £1.

[Count Bassy]

Shallow depressions to match the amp feet in the top of the cab?

[Count Bassy]

or weigh your amp down with a few pints of beer on top.

[jonnythenotes]

Great idea Count Bassy, but what do I weigh down the continually emptying pint glasses with...?

[JTUK]

I just use a heavy amp...

[JTUK]

But seriously, I've not known my light TH500 to move, tbh, when I use it.

[stevie]

The problem really is with the cab. A properly designed cab shouldn't vibrate that much. It's definitely not good for the sound.

[jonnythenotes]

I must be missing something here.... How can you have a bass cab that picks up no vibration from the speaker it contains. Unless you float the speaker, and completely isolate it from contacting the cab, you will transfer vibration to the speaker enclosure. Every cab I have ever owned has vibrated.... How else would you explain the 'boomy stage' we have all experienced, or the reasoning behind a Gramma Pad. Give me an example of a speaker cab that I could put my hand on top of, when it is being driven at gigging volume, and not feel any vibration, and I will eat my hat.... There is no such thing....

[chris_b]

Not saying there will be no vibration at all, but it is unusual to have so much that it will rattle the amp off the top of the cab. As you say the feet not gripping could be the actual problem.

Anyway, you've fixed the problem, so all's good.

[stevie]

[quote name='jonnythenotes' timestamp='1432066271' post='2777886']
I must be missing something here.... How can you have a bass cab that picks up no vibration from the speaker it contains. Unless you float the speaker, and completely isolate it from contacting the cab, you will transfer vibration to the speaker enclosure. Every cab I have ever owned has vibrated.... How else would you explain the 'boomy stage' we have all experienced, or the reasoning behind a Gramma Pad. Give me an example of a speaker cab that I could put my hand on top of, when it is being driven at gigging volume, and not feel any vibration, and I will eat my hat.... There is no such thing....
[/quote]

You might like to look at Chris's earlier post. I have a (modified) Ashdown ABM Mini 15 that hardly vibrates at all even with a 500-watt driver fitted. You're right that you can't completely get rid of vibration, but you can get it down to negligible levels.

[mcnach]

[quote name='jonnythenotes' timestamp='1432047745' post='2777551']
Sounds reeeaaaallly nice..... The vibration I get is not like a fifties washing machine on a spin cycle...Think Uncle Buck..., more like a very fast dentists drill type thing. The main problem is a light weight amp....Epifani PS 6000, [color=#0000cd][b]which has sort of small hard rubber feet[/b][/color] which does not have the weight to hold itself in place. The cabs I use are 2 Ashdown ABM Neo 4x8's, stacked, which are the best I have ever owned... and can handle anything I throw at them as they are rated at 1000 watts each. It's just the small surface contact area of the feet, and the weight of the amp, (or lack of ) that cause this problem, which has been fixed for £1.
[/quote]


change the feet!!!

easy, cheap, and profer long term solution, no "oh, where's teh mat?" or "man, this mat is getting disgusting"

[jonnythenotes]

Because the amp is so light, I think even Spider-Man/ super grip octopus sucker feet would not keep it on.....I will check it out though...thanks.

[mcnach]

[quote name='jonnythenotes' timestamp='1432197726' post='2779019']
Because the amp is so light, I think even Spider-Man/ super grip octopus sucker feet would not keep it on.....I will check it out though...thanks.
[/quote]

Don't know, that's what I did for my very very light GB Shuttle 9.2... it had hard plastic feet and if you brush it it would slide about. You had to make sure you secure the cable around a handle or something or it would move all over the place too easily. Rubber grippy feet, and no more trouble. They cost me pennies each.

[oldmanrock]

[quote name='ahpook' timestamp='1429886535' post='2756023']
Strapping the head to the cab with some bungee cords ?
[/quote]

I did this - cab handle, up and over the amp and down to the cab handle on the other side!

Edited May 23, 2015 by oldmanrock

[Guest bassman7755]

[quote name='JapanAxe' timestamp='1429887196' post='2756034']
£2 with free delivery from [url="http://www.amazon.co.uk/New-Multipurpose-Non-Slip-Mat-Furniture/dp/B00AVJ9GBY/ref=sr_1_1?ie=UTF8&qid=1429887121&sr=8-1&keywords=non+slip+mat"]Amazon[/url]:


[/quote]

Seriously dont bother with elaborate solutions, just use this stuff.

[jonnythenotes]

Bumped for 'Itsmedunc' to have a look at...

[Slipperydick]

My old Bassman vibrates around the top of the cab, but only at some venues and not others.

Simple answer, lay a bar towel between the top of the cab and the amp - always carry a few anyway, theyre cheap enough.

[bassace]

[quote name='bassman7755' timestamp='1432458487' post='2781558']


Seriously dont bother with elaborate solutions, just use this stuff.
[/quote]

I've just bought a Puma 500, as light as, and some of that was included in the packaging.

[itsmedunc]

[quote name='jonnythenotes' timestamp='1440235253' post='2849221']
Bumped for 'Itsmedunc' to have a look at...
[/quote]

Thanks for the info, some great solutions. I'll wait until I get it then decide on either the rubber mat or some non slip feet, then put the lead through the cab handle. What could possibly go wrong?

[steve-bbb]

[quote name='karlfer' timestamp='1429885082' post='2755998']
Mouse mat has worked for me for years.
[/quote]

But what happens when the mouse comes asking for it back?