High Efficiency Speaker Asylum

you cannot make a 78 gram cone driver into a sub woofer.

71.168.92.136

Bill Fitzmaurice

In Reply to: RE: Help Needed Selecting The Right Hi-Efficiency Subwoofer posted by moray james on May 02, 2017 at 20:01:51

Yes, you can. One of the properties of horns is that they can extend response well below the driver Fs. In fact, they tend to work best when the driver Fs is higher than the horn Fc. Realizing a 20Hz Fc using a driver with 40Hz Fs and 78g Mms isn't at all difficult.

Follow Ups:

RE: you cannot make a 78 gram cone driver into a sub woofer. - moray james 08:17:46 05/03/17 (1)
Ok I got caught short not providing enough information. I was referring to a direct radiator where the woofer needs to be heavier to reach very low frequencies. This is supposed to be a sub woofer not a woofer. Horn loading the 78 gram fifteen inch woofer is not going to make it into sub woofer territory either. A true horn loaded sub woofer is going to be massive in physical size,that was why I recommended Tom Danley as his tapped horn designs can be reasonably compact.
moray james
- A true horn loaded sub woofer is going to be massive in physical size, - Bill Fitzmaurice 08:55:54 05/03/17 (0)
  The THT mentioned above by Don is a 22Hz horn in 18 cubic feet. That's not 'massive' in my book. I've seen reflex that are larger, not to mention IB.

Post a Followup:

FAQ

Post a Message!

Forgot Password?

Moniker (Username):
Password (Optional):
	Remember my Moniker & Password (What's this?) Eat Me
E-Mail (Optional):
Subject:

Message:	(Posts are subject to Content Rules)

Optional Link URL:
Optional Link Title:
Optional Image URL:
Upload Image:
E-mail Replies:	Automagically notify you when someone responds.

To view your new posting or follow-up, click on the RELOAD or REFRESH button on your browser.

This post is made possible by the generous support of people like you and our sponsors:

Signature Sound

[ Signature Sound Lounge ]