12" woofer upgrade - sealed or ported?

Sparhawk · 26th February 2006, 11:01 PM

I have some old DIY speakers that I'm thinking about upgrading. I started another post about the mid/tweeter replacement here . I've pretty much decided on the Peerless HDS 152 and Seas 27TDC for the mid and tweeter, with the crossover described here .

But now I'm thinking about replacing the woofers too. Currently these
cabinets are 100 litre sealed boxes.

I'm looking at the NHT1259 and the Dayton RSS315HS. The NHT looks very good in a 100 litre sealed box. The Dayton looks okay, but looks much better in a vented box. But the port (tuned to 21Hz) is very large, and would decrease the box volume.

Any thoughts? Any other drivers I should be considering?

tungsten · 6th March 2006, 06:34 PM

Most programs and recommendations for port diameter exaggerates the necessary dimensions. You´ll be fine with two 3" ports. Also, standard port calculations will give you a too low tuning. See http://www.troelsgravesen.dk/vent_tuning.htm

BTW, I´d go for the NHT in a closed box..

Kittle · 6th March 2006, 07:32 PM

Tha NHT driver is good stuff

In a closed box (3.5^3 ft) yeilds neighbors asking you to turn the bass down

26th February 2006, 11:01 PM	#1
Sparhawk diyAudio Member Join Date: Sep 2002 Location: Ontario, Canada	12" woofer upgrade - sealed or ported? I have some old DIY speakers that I'm thinking about upgrading. I started another post about the mid/tweeter replacement here . I've pretty much decided on the Peerless HDS 152 and Seas 27TDC for the mid and tweeter, with the crossover described here . But now I'm thinking about replacing the woofers too. Currently these cabinets are 100 litre sealed boxes. I'm looking at the NHT1259 and the Dayton RSS315HS. The NHT looks very good in a 100 litre sealed box. The Dayton looks okay, but looks much better in a vented box. But the port (tuned to 21Hz) is very large, and would decrease the box volume. Any thoughts? Any other drivers I should be considering?

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
15" woofer in sealed enclosure	KCCT82	Multi-Way	23	18th January 2008 03:45 PM
22W/4851T Revelator 8" woofer an upgrade for 21w-8554?	Daveis	Multi-Way	0	9th October 2007 02:14 AM
what size sealed or ported box can this woofer use ?	zuki	Multi-Way	2	23rd November 2004 02:20 AM
Woofer Towers, front-ported or rear-ported?	Goldenboy	Multi-Way	6	15th June 2004 06:44 PM
suggestions; looking for shallow 10 or 12" woofer to work in small sealed box	zuki	Multi-Way	6	1st April 2004 06:21 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

6th March 2006, 06:34 PM	#2
tungsten diyAudio Member Join Date: Apr 2005 Location: Aarhus	Most programs and recommendations for port diameter exaggerates the necessary dimensions. You´ll be fine with two 3" ports. Also, standard port calculations will give you a too low tuning. See http://www.troelsgravesen.dk/vent_tuning.htm BTW, I´d go for the NHT in a closed box..

6th March 2006, 07:32 PM	#3
Kittle diyAudio Member Join Date: Jun 2004 Location: KC	Tha NHT driver is good stuff In a closed box (3.5^3 ft) yeilds neighbors asking you to turn the bass down

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