Major innovative break through: The new NSMT Loudspeakers reference speaker

Vandersteen has had a powered sub integrated with his speakers for many years

Hey Stringreen,

You are correct Vandersteen has models with built-in active subwoofers. Many other companies build their own subwoofers to integrate with their own speakers. 

However, one of the innovative factors in the new NSMT System Two speaker is that Erol is one of the few designers who is brilliant at designing band-pass active subwoofers, instead of port loaded or acoustic suspension that has to be controlled electrically with either the cross-over or digital shaping. I get into a lengthy explanation of why band-pass designs are rare and sound significantly sound superior in many ways to the normal designs mentioned above in the review. 

I get into a lengthy explanation of why band-pass designs are rare and sound significantly sound superior in many ways to the normal designs mentioned above in the review.

 

@teajay  please do.
I am attracted to BP designs, but thought that the transient response was generally considered to be a bit slow? (Maybe I am thinking of the higher order ones?)
And the group delay is rolled up in all that as well.

Hey Holmz,

Actually, the transient response is quite quick/accurate with Erol's band pass design. Don't quite know were you got the assumption that a band pass would be slow at all. I'm sure when the review comes out you will enjoy the extensive information on Band Pass technology.

Teajay (Terry London)

@teajay i was pretty sure that as the order goes up the group delay went up, and the things that went along with slowness, muddies, and the other subjective things.

And why people like transmission lines, infinite baffle and sealed boxes.

WinSD does give group delay for a variety of boxes and used the driver’s Theil-Small parameters.