Tri-amping, driver time alignment, and carbon fibre cones
 

On Mon, 23 May 2005 16:55:26 GMT, "Wally" wrote:

Stewart Pinkerton wrote:

Don't believe everything you read about ported speakers - it mostly
refers to 30 year-old pre-CD boomboxes. Consider that the B&W N800
series are all reflex designs, as are all the bigger ATC speakers, and
you'll see that there are no simple answers in this game.

Plus of course if you have a sub, you can stuff the ports and get a
tighter but less extended bass response from the small speakers.

Doesn't that take me straight back to the problems I might face in starting
from scratch? IOW, stuffing the ports changes the characteristics of the
box, thus releasing possible demons that were compensated for in the ported
version?

What 'demons'? Stuffing the port will lower system Qts, raise F3, and
reduce any internal noises that might have been escaping through the
port. The only disadvantage is the raising of F3, and that's not an
issue if you have a sub.

I'm not averse to doing a bit of box building.

Fair enough - just don't expect your efforts to result in something
superior to a speaker backed by several million quid's worth of R&D by
top designers.

I don't, but I do feel that some 'good practice' in the box building
department should yield something decent, in the sense that, if I avoid the
bad practice (eg, a cube made of thin cardboard), I'm half-way there.

Make that about 10%....................
--

Stewart Pinkerton | Music is Art - Audio is Engineering

Tri-amping, driver time alignment, and carbon fibre cones
 

By the way, here's one person's method.

http://www.duffroomcorrection.com

He uses tri-amping, with digital signal processing on a PC to provide
digital filtering and EQ.

He also positioned his subwoofers under the floor; those whose listening
room is on the ground floor of a house with floorboards might be
interested. It's one way to provide a large subwoofer enclosure without
taking up room space!

Tim

Tri-amping, driver time alignment, and carbon fibre cones
 

"Tony Gartshore" wrote in message
...
In article ,
says...
Unlss you've got a 32 foot organ pipe I'm not sure you can! All the
speaker software predicts problems getting much output below about
40 Hz even with a wardrobe.

Cue Nath..


T.
--
Please Tony, NO!! You'd look dreadful in a basque and fishnets..

Making comments like that really hertz

Peter Scott