Amp for passive subwoofer

Leo0716 · 18th September 2011, 04:16 PM

Hi, Im new in this forum, but not complete new in electronics.

I got passive subwoofer (24-25W). Maybe some of you guys have DIY aplifier schematics wicth would fit for this subwoofer? Or any ideas how to power it on?

Alfonz · 18th September 2011, 04:38 PM

Hi!
You can use LM1875 or TDA2050. Take a look datasheets of the IC's with schematics and PCB.

Leo0716 · 05:50 PM

I will go with tda2050. On schematics in datasheet I should add low pass filter, right?

Joris · 18th September 2011, 06:09 PM

If you want sub out of your sub, you should

Can be a very simple passive or slightly more complicated active filter.

Leo0716 · 18th September 2011, 06:13 PM

Sorry, but I didnt get what you ment "sub out"

Minion · 18th September 2011, 07:10 PM

I believe he means that if you want your sub to sound like a sub you would need a low pass filter ......

! · 18th September 2011, 08:50 PM

I think I would upgrade the sub to something > 25W, long before going to the trouble of building a custom amp for it.

18th September 2011, 04:16 PM	#1
Leo0716 diyAudio Member Join Date: Sep 2011	Amp for passive subwoofer Hi, Im new in this forum, but not complete new in electronics. I got passive subwoofer (24-25W). Maybe some of you guys have DIY aplifier schematics wicth would fit for this subwoofer? Or any ideas how to power it on?

18th September 2011, 05:40 PM	#3
Leo0716 diyAudio Member Join Date: Sep 2011	I will go with tda2050. On schematics in datasheet I should add low pass filter, right? Last edited by Leo0716; 18th September 2011 at 05:50 PM.

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18th September 2011, 04:38 PM	#2
Alfonz diyAudio Member Join Date: Jul 2008	Hi! You can use LM1875 or TDA2050. Take a look datasheets of the IC's with schematics and PCB.

18th September 2011, 06:09 PM	#4
Joris diyAudio Member Join Date: Aug 2009 Location: Noord-Holland	If you want sub out of your sub, you should Can be a very simple passive or slightly more complicated active filter.

18th September 2011, 06:13 PM	#5
Leo0716 diyAudio Member Join Date: Sep 2011	Sorry, but I didnt get what you ment "sub out"

18th September 2011, 07:10 PM	#6
Minion diyAudio Member Join Date: May 2006	I believe he means that if you want your sub to sound like a sub you would need a low pass filter ......

18th September 2011, 08:50 PM	#7
! diyAudio Member Join Date: Jun 2005 Location: Midwest	I think I would upgrade the sub to something > 25W, long before going to the trouble of building a custom amp for it.

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