Dual Peerless 12" XLS in 60L enclosure

muhy3 · 17th December 2004, 03:12 AM

I am wondering if I put two (2) 830500 in the same enclosure (sealed), and double the volume specified by DST will be fair for moderate listening levels. Two drivers means an overall 3dB gain, and at 25Hz the subwoofer is predicted to produce ~103dB using a 60L enclosure and the two identical drivers (as said).

I have attempted single woofer sealed, and i wasnt very happy with the results. I have tried vented, but even the specifications by peerless and calculations I have made, the subwoofer still doesn't sound up to scratch with what I want. I like the tight feel of bass, especially as it blends in well with my style of music in the lower mid section, but I also want to have the headroom for audible bass during movie time, not exuberant SPL... but moderate.

Maximum SPL is estimated at 115dB. The vented simulation for two drivers in one enclosure is quite impressive from a technical point of view, but it would be too complicated for me to build such an enclosure accurately.

morbo · 17th December 2004, 03:20 AM

What was the Q of your sealed sub? And what specifically was it that you weren't happy with?

joe carrow · 17th December 2004, 03:28 AM

Placing two drivers in a single enclosure is in many ways "OK"- but it gives you more to worry about.

I'd suggest two enclosures, and here's why:

-smaller spans of cabinet to worry about for bracing
-smaller internal measurements pushes the first internal standing wave up in frequency
-subs in different areas of the room start to act as a line source, and excite room modes more evenly

just my two cents, and why you might want to consider two boxes instead of two in one. If you really want two in one, then my suggestion is just to pay attention to the issues I mentioned.

Joe

simon5 · 17th December 2004, 04:09 AM

You could try a Push-Pull enclosure, might be very interesting!

Also, 60L is quite small, so you could try Isobaric with that 60L box to flatten the frequency response, but then it's a bit more power hungry.

You could even do a vented push-pull or vented isobaric if you are a bit crazy.

gjo · 18th December 2004, 06:26 AM

Do a google search for the site for Bamberg Engineering and Sound Labs, owned by Phil Bamberg. He makes subs/ offers designs using single and two Peerless drivers.

George

Javaman · 12th January 2005, 07:45 PM

Here's the URL for Phil's site:

http://www.bamberglab.com/

He had a nice looking sub design using the XLS drivers and a passive radiator.

17th December 2004, 03:12 AM	#1
muhy3 diyAudio Member Join Date: Jul 2004 Location: Sydney, Australia	Dual Peerless 12" XLS in 60L enclosure I am wondering if I put two (2) 830500 in the same enclosure (sealed), and double the volume specified by DST will be fair for moderate listening levels. Two drivers means an overall 3dB gain, and at 25Hz the subwoofer is predicted to produce ~103dB using a 60L enclosure and the two identical drivers (as said). I have attempted single woofer sealed, and i wasnt very happy with the results. I have tried vented, but even the specifications by peerless and calculations I have made, the subwoofer still doesn't sound up to scratch with what I want. I like the tight feel of bass, especially as it blends in well with my style of music in the lower mid section, but I also want to have the headroom for audible bass during movie time, not exuberant SPL... but moderate. Maximum SPL is estimated at 115dB. The vented simulation for two drivers in one enclosure is quite impressive from a technical point of view, but it would be too complicated for me to build such an enclosure accurately. __________________ There used to be a time, when penguins filled the sky!

17th December 2004, 04:09 AM	#4
simon5 diyAudio Member Join Date: Nov 2004 Location: Québec, Québec	You could try a Push-Pull enclosure, might be very interesting! Also, 60L is quite small, so you could try Isobaric with that 60L box to flatten the frequency response, but then it's a bit more power hungry. You could even do a vented push-pull or vented isobaric if you are a bit crazy. __________________ DIYaudio for President !

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
Peerless XXSL 10" Small enclosure	KI	Subwoofers	20	4th October 2009 01:54 AM
Charcoal "Supreem" hi-density foam "enclosure"	IG81	Multi-Way	0	23rd April 2009 01:34 PM
Enclosure - 10" Peerless XXLS	Guy Incognito	Subwoofers	4	23rd November 2007 07:50 AM
Peerless Dual PR 12" XLS Sub	HTRookie	Subwoofers	7	18th January 2007 06:14 AM
Dual 8 ohm Peerless XXLS for car?	Jexx	Car Audio	3	19th July 2006 03:53 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

17th December 2004, 03:20 AM	#2
morbo diyAudio Member Join Date: Sep 2004 Location: Guelph, Ontario	What was the Q of your sealed sub? And what specifically was it that you weren't happy with?

17th December 2004, 03:28 AM	#3
joe carrow diyAudio Member Join Date: May 2004 Location: San Francisco	Placing two drivers in a single enclosure is in many ways "OK"- but it gives you more to worry about. I'd suggest two enclosures, and here's why: -smaller spans of cabinet to worry about for bracing -smaller internal measurements pushes the first internal standing wave up in frequency -subs in different areas of the room start to act as a line source, and excite room modes more evenly just my two cents, and why you might want to consider two boxes instead of two in one. If you really want two in one, then my suggestion is just to pay attention to the issues I mentioned. Joe

18th December 2004, 06:26 AM	#5
gjo diyAudio Member Join Date: May 2003 Location: Bangalore, India	Do a google search for the site for Bamberg Engineering and Sound Labs, owned by Phil Bamberg. He makes subs/ offers designs using single and two Peerless drivers. George

12th January 2005, 07:45 PM	#6
Javaman diyAudio Member Join Date: Nov 2001 Location: Virginia USA	Here's the URL for Phil's site: http://www.bamberglab.com/ He had a nice looking sub design using the XLS drivers and a passive radiator.