BLH w/ High Xmax Driver???

goody75 · 16th December 2011, 02:00 AM

Back-Loaded Horn Question:
Is there anything wrong with using a driver that has a mid to high Xmax for a BLH design - (around 7mm / 3inches)?

What about a speaker with a mediocre sensitivity (~90 db) and higher power handling?

AllenB · 16th December 2011, 03:52 AM

When you use a driver in a horn, using a front horn as the example as this is the standard method, you place the rear of the driver into a box which you use to balance it against the pressure caused by the horn. Drivers for a back loaded horn need to be chosen carefully as you don't have this option.

This process is often referred to as 'reactance annulling' if you wanted to read up on it.

goody75 · 18th December 2011, 02:49 PM

Thanks, AllenB. I haven't gotten to it yet but I will do some reading.

whgeiger · 18th December 2011, 07:48 PM

See Rog Mogale's Design (example)
Speakerplans.com
Use the PD1850 for best results.
Precision Devices International Limited
Regards,
WHG

16th December 2011, 02:00 AM	#1
goody75 diyAudio Member Join Date: Apr 2010 Location: Motown (area)	BLH w/ High Xmax Driver??? Back-Loaded Horn Question: Is there anything wrong with using a driver that has a mid to high Xmax for a BLH design - (around 7mm / 3inches)? What about a speaker with a mediocre sensitivity (~90 db) and higher power handling?

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
Woofer "Speed," high Xmax vs. low Xmax in Uframe and Sealed Enclosures	jarvissound	Subwoofers	33	24th February 2011 02:59 AM
What is the most durable 8" high xmax woofer?	sardonx	Multi-Way	14	24th July 2005 07:18 PM
High Xmax is Great But.................	OMNIFEX	Multi-Way	48	8th April 2003 06:06 PM
12" driver with big Xmax,low Fs, & high efficiency?	WolfmanX	Multi-Way	18	26th November 2002 11:10 PM

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

16th December 2011, 03:52 AM	#2
AllenB diyAudio Member Join Date: Oct 2008	When you use a driver in a horn, using a front horn as the example as this is the standard method, you place the rear of the driver into a box which you use to balance it against the pressure caused by the horn. Drivers for a back loaded horn need to be chosen carefully as you don't have this option. This process is often referred to as 'reactance annulling' if you wanted to read up on it.

18th December 2011, 02:49 PM	#3
goody75 diyAudio Member Join Date: Apr 2010 Location: Motown (area)	Thanks, AllenB. I haven't gotten to it yet but I will do some reading.

18th December 2011, 07:48 PM	#4
whgeiger diyAudio Member Join Date: May 2004 Location: Pensacola, Florida	See Rog Mogale's Design (example) Speakerplans.com Use the PD1850 for best results. Precision Devices International Limited Regards, WHG

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