Driving double coil woofer

cld1354 · 22nd April 2003, 10:36 AM

Hello,
I'm trying to realize a sub as a part of multiamp loudspeaker that I will cut at about 150 Hz.
I have for this a pair of Monacor SPH-380 that have 4+4 ohm 250watts double coil.
There are problems to drive each coil with an amp of, I say, 200 w
rather than with an amp of 400 w driving the parallel of coils?

Thanks
Marco

carlosfm · 23rd April 2003, 11:28 AM

Don't connect the two coils in parallel, or you'll have a 2 ohm speaker.
Make a series connection, and you'll get an 8 ohm woofer, much easier to drive.

Then you can use the 400w amp.

22nd April 2003, 10:36 AM	#1
cld1354 diyAudio Member Join Date: Apr 2003 Location: Ancona	Driving double coil woofer Hello, I'm trying to realize a sub as a part of multiamp loudspeaker that I will cut at about 150 Hz. I have for this a pair of Monacor SPH-380 that have 4+4 ohm 250watts double coil. There are problems to drive each coil with an amp of, I say, 200 w rather than with an amp of 400 w driving the parallel of coils? Thanks Marco

23rd April 2003, 11:28 AM	#2
carlosfm Banned Join Date: Mar 2003 Location: Lisbon, Portugal	Series Don't connect the two coils in parallel, or you'll have a 2 ohm speaker. Make a series connection, and you'll get an 8 ohm woofer, much easier to drive. Then you can use the 400w amp.

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
Single Voice Coil Vs Double Voice Coil Subwoofer	Workhorse	Car Audio	6	12th April 2007 06:36 AM
Where can i get a DUAL COIL WOOFER (INDIA)	rikhav	Multi-Way	1	8th October 2006 10:54 AM
amp questions for driving 'voice coil actuator'?	steve	Solid State	10	6th October 2005 12:03 AM
measurement TS in a double voice coil woofer	hiendaudio	Multi-Way	2	3rd February 2004 05:31 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