large v small drivers - Page 2

happy.gringo · 23rd January 2008, 12:37 PM

Mark,
Why did you decide to use the Beta this time instead of continuing with the Alpha?

GM · 23rd January 2008, 02:18 PM

Quote:

Originally posted by marec
Authority...
How might you characterise that?

I find a something almost subliminal from larger loudspeakers, but there is definately a tangible component

Greets!

It's all about BW and acoustic efficiency. The CVs went lower with much greater acoustic efficiency. While our on-board computer apparently can reconstruct missing sub-harmonics, fundamentals from its harmonics, it's no substitute for the 'real deal' and the mids/HF sound more 'full'/extended when the missing tonally balanced LF BW is added even though there's no measurable difference in the mids/HF.

As acoustic efficiency rises, distortion for a given average/peak SPL falls and at some point the mids, tweeters are no longer pushed into any audible non-linearities and the top end opens up with more 'air' around the instruments with the only way to improve it at this point AFAIK is to increase the HF BW up to the 40+ kHz of some instrument's harmonics.

GM

kristleifur · 23rd January 2008, 03:02 PM

Just to chime in: There's also the issue of directionality - larger drivers "beam" more, with a smaller sweet spot.

GM · 23rd January 2008, 04:06 PM

Yes, this falls under the acoustic efficiency part.

marec · 23rd January 2008, 06:43 PM

Quote:
Mark,
Why did you decide to use the Beta this time instead of continuing with the Alpha?

Actually I didn't. I quite like the Alpha's. It may have been Dave...

Rgds
Mark

planet10 · 23rd January 2008, 08:49 PM

Quote:

Originally posted by marec
Actually I didn't. I quite like the Alpha's. It may have been Dave...

no i'm using alpha... going to work on extending Martin's work. He didn't really do anything new, but the article catylized the entire genre and gives a simple recipe and greater understanding of how things work making it a lot easier for a lot more people to appreciate OBs and small FRs.

dave

23rd January 2008, 04:06 PM	#14
GM diyAudio Member Join Date: Jun 2003 Location: Chamblee, Ga.	Yes, this falls under the acoustic efficiency part. __________________ Loud is Beautiful if it's Clean! As always though, the usual disclaimers apply to this post's contents.

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Sub: 1 large or 2 small drivers ?	Bigun	Subwoofers	52	21st February 2009 10:46 PM
Multiple small drivers for large output?	diarav	Multi-Way	15	29th October 2006 08:39 AM
Large Driver or Multiple Small Drivers ???	emailtim	Subwoofers	8	25th March 2006 10:02 PM
Using those small Creative titanium drivers (large pics)	Otherwise	Full Range	1	2nd December 2005 08:13 PM
tradeoffs in small vs. large drivers	jdybnis	Subwoofers	6	10th November 2004 12:24 AM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

23rd January 2008, 12:37 PM	#11
happy.gringo diyAudio Member Join Date: Sep 2005	Mark, Why did you decide to use the Beta this time instead of continuing with the Alpha?

23rd January 2008, 03:02 PM	#13
kristleifur diyAudio Member Join Date: Apr 2006 Location: Reykjavík	Just to chime in: There's also the issue of directionality - larger drivers "beam" more, with a smaller sweet spot.

23rd January 2008, 06:43 PM	#15
marec diyAudio Member Join Date: May 2006	Quote: Mark, Why did you decide to use the Beta this time instead of continuing with the Alpha? Actually I didn't. I quite like the Alpha's. It may have been Dave... Rgds Mark

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)