It's common practise to turn a woofer 180 degrees, after a prolonged time of use, especially in the case of speakers mounted(or stored) vertically. Are you fameliar with this, and do you practise it?

 

It's a good point.

But, most people don't know what you are talking about.

Yes the suspension does sag under the cone's weight over time. I've been involved with warantee claims caused by this very thing. I think most people don't consider owning a driver long enough though, to have the effects of turning the driver be applicable to their installation. For a prolonged term of use, as you call it, I would recomend a 1/4 (90 deg.) a year turn to drivers mounted vertically.

BTW, I practice what I preach. Both the Focal Utopia 4W2 midranges and 6W1 midbasses that I use in my own car have been rotated periodically.

Good topic Eli47.

Adam

 

^^If I read this right you just rotate the speaker essentially one screw hole I guess or 1/4 turn each time and this protects the speakers from suspension sag? [img]graemlins/dunno.gif[/img]

 

I think many members are like me and like to spend way too much money changing out drivers to see what's new each season.

 

^^^^I can't afford it.

 

It obviously can't hurt, but I think most drivers are built well enough that it isn't an issue.

Esentially, as soon as you mount the driver there will be X amount of sag, and the only way that will increase over time would be due to changes in the materials structure and essentially it's MOE.

Once this happens it can't be reversed, and Iam not sure one section of the suspension would be effected any more then another as time goes by anyway.

My old man has speakers/woofers that have been mounted in the same cabinates for 30+ years and it has never been a problem [img]graemlins/dunno.gif[/img]