[geoff]

On 27/09/2014 6:32 p.m., Trevor wrote:
On 25/09/2014 5:41 PM, geoff wrote:
On 25/09/2014 6:46 a.m., David Platt wrote:

On the down side: it wears out tool-steel saw blades quickly (use
carbide!), it's heavy, it's not all that rigid (you're right, good
bracing is very important), and it can crumble at the corners if
struck. And, of course, Stradivarius didn't ever mill any of his
better violins out of it :-)


That's what makes MDF *great* for speakers. You DON'T WANT your cabinet
resonating and radiating sound - you want it as insert as possible,
exactly the opposite of the case with violins, guitars, pianos, drums,
etc.

Right, which makes MDF a good *compromise* for speaker boxes only.
Hardly best in any single parameter however.

Trevor.




I wasn't suggesting making speaker chassis, cones, or magnets out of MDF
.....

geoff

[Trevor]

On 7/10/2014 6:30 AM, geoff wrote:
On 27/09/2014 6:32 p.m., Trevor wrote:
On 25/09/2014 5:41 PM, geoff wrote:
On 25/09/2014 6:46 a.m., David Platt wrote:
On the down side: it wears out tool-steel saw blades quickly (use
carbide!), it's heavy, it's not all that rigid (you're right, good
bracing is very important), and it can crumble at the corners if
struck. And, of course, Stradivarius didn't ever mill any of his
better violins out of it :-)

Or any at all for that matter, since it hadn't been invented when he
died. :-)


That's what makes MDF *great* for speakers. You DON'T WANT your cabinet
resonating and radiating sound - you want it as insert as possible,
exactly the opposite of the case with violins, guitars, pianos, drums,
etc.

Right, which makes MDF a good *compromise* for speaker boxes only.
Hardly best in any single parameter however.


I wasn't suggesting making speaker chassis, cones, or magnets out of MDF

Just as well or you would appear even sillier!!!

Trevor.