Speaker plinths.....

Just ordered --



2 off, for use as speaker plinths for the kestrels.

They are granite engineers surface blocks.
230x300x50mm for the sum of 34.95 each.
Ill let you know how i get on with them

 

Nice

 

oops
not 14.95, but 34.95 each
Chris, i hope they are nice!

 

Penance, where did you get that bad boy from?

 

Looking good. I need to do something like that with mine. Because I've got a stone floor they're very hard to keep stable. Not sure what I'd put between that and the floor though

 

Mr C, I ordered from axminster tools, should be here soon.

Lord, adjustable spikes should do the trick, well thats my plan

 

Are you planning to bolt it to the base of your speakers ?

 

no.

 

I wondered about bouncy balls cut in half...........

 

Use three spikes. No matter how uneven the surface, you will get a stable platform. Use adjustable spikes and then you can level it.

 

Wouldn't three be inherently unstable, like if one of the dogs stood on the unsupported corner?
Had also wondered about a semi inflated inner tube

 

not got a dog

 

If you use the spike threaded holes you can bolt the block to the base of the speakers [bugger drilling the holes] this would lower the centre of gravity and stiffen up the cabinet. There was a company in North Notts doing this with some very good sonic results. I saw them at Chantry Audio in Tuxford a couple of years back.

 

Penance, I use granite meself and I find it works best without any spikes. Try with and without to see what you think. Putting spikes between granite and floor somewhat defeats what the granite does (ie, reduce vibration).

 

Whenever i have used 3 'self levelling type spikes or cones in the past i have also fitted 2 rubber stick on 'Hi-Fi feet from the likes of B&Q etc onto the two 'unused' corners. Basically you need to find feet that are just short enough so that they don't actually touch the floor themselves whilst in normal use, but will contact the floor almost instantly if the support should be tilted or toppled and therfore hopefully prvent a total disaster.

Like this here

 

S & C - I have been looking at your photos and wondered what the air bladder was in your diy platforms. I have tried inner tubes, but found the whole assembly to be a bit wobbly.

I have the same speakers as yours and find the bass drones on my suspended wooden floor. I also have some meadowlarks that are not so bad at driving the floor, but they are collecting dust in the spare room (a bit too big)

How does the Mana compare with your diy bases?

 

The theory behind using three-spikes is to control what is termed 'micro-rocking'. However, where more weight being placed on the spikes is an issue and you may be worried about stability, I have seen a 5-point spike formation used to contain the 'micro-rocking'.

 

The only reason for three spikes is the ease of levelling, providing the surface is either level or the spikes adjustable.
4,5 or more spikes will achieve the same result, but be harder to set up.

 

Sounds like HNE, based in Retford. I had some Celestion A3 plinths off them in the past which bolted on as you describe and worked well. They also manaufacture speakers, and seem to take the trouble to get to know speakers and design plinths to suit them rather than just make to measurements. Actually I've just bought two granite amp plinths and a granite equipment rack off HNE; the finish is superb.

 

Especially with 50mm granite, but same with the 30mm granite I use, the density of the material is such that it's difficult to topple it. Especially with 25kg of speaker on it, it will take a lot more than a 30kg dog to upset the balance of the thing.

Everyone knows that if you have a table with 4 legs on an uneven surface it will rock. 5 legs won't help... it's just even more difficult still to get a good contact on all the feet. It is for the same reason that camera tripods, artist's easels, music stands, and particularly surveyor's theodolites and total stations have 3 legs.