most powerful class D for car without inverter

jaya000 · 16th July 2007, 03:58 PM

I will like to make sub amp around 80~100W class D for car. But i need without inverter. It should work on 13.2V Dc. I am ready to hv it @1 ohm load.

Saturnus · 16th July 2007, 04:07 PM

A www.41hz.com amp9 with all 4 channels parallelled should give you around 100 watts into 1 Ohm on a 13.2 volts supply.

jaya000 · 17th July 2007, 12:03 PM

Yes. But cost will be too high.
I am looking 4 solution previously offered by probably IRF chip solution. It was giving 80W@.75 ohms. It was simple, cheap.
waiting for more solutions like this.

dmfraser · 17th July 2007, 06:57 PM

If it was easy everyone would do it. Seriously, you just cannot get enough voltage for that power level without an inverter.

There is a development concept circuit on my web site at www.schematicsforfree.mattsoft.net for what you want in the Audio section. But it is not a finished design.

Arx · 17th July 2007, 07:40 PM

it should be doable with a low enough impedance, though your cables will all need to be ridiculously huge.

-Nick

dmfraser · 17th July 2007, 10:50 PM

And you'll need to find some 1/2 ohm speakers.

Arx · 17th July 2007, 11:17 PM

probably 4 dvc woofers in parallel.

I'm not saying it makes a lot of sense, just that it's doable.

From 12v you're going to have to choose between not enough power into one speaker, or not enough power into 4 speakers.

It's probably as cheap to buy 2 speakers and build an inverter to drive them properly.

jaya000 · 19th July 2007, 06:27 PM

Dual voice coil car woofers r easily available. by just buying two speakers i can get 1 ohm impedance. Hence looking for above solution.

Arx · 19th July 2007, 06:46 PM

It does seem a tad silly though getting 4 woofers and then having under 100W to drive them.

-Nick

jaya000 · 20th July 2007, 05:00 AM

arx,
i think u hv not understood.
I am talking of buying two woofers of dual voice coil. This can be 8 ". So i think the power 80~100W@1 ohm i require is ok for my car.

16th July 2007, 03:58 PM	#1
jaya000 diyAudio Member Join Date: Dec 2006	most powerful class D for car without inverter I will like to make sub amp around 80~100W class D for car. But i need without inverter. It should work on 13.2V Dc. I am ready to hv it @1 ohm load.

17th July 2007, 06:57 PM	#4
dmfraser diyAudio Member Join Date: Dec 2003 Location: Orange County, CA	Inverterless car amp If it was easy everyone would do it. Seriously, you just cannot get enough voltage for that power level without an inverter. There is a development concept circuit on my web site at www.schematicsforfree.mattsoft.net for what you want in the Audio section. But it is not a finished design. __________________ Dan Fraser

17th July 2007, 10:50 PM	#6
dmfraser diyAudio Member Join Date: Dec 2003 Location: Orange County, CA	No inverter amp And you'll need to find some 1/2 ohm speakers. __________________ Dan Fraser

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
Anyone know of some ridiculously powerful triodes for class A useage?	Test Electrix	Tubes / Valves	71	30th June 2009 01:11 PM
Serach for a real powerful Class D with SMPS and PFC and DSP	Calvin	Class D	9	24th October 2008 07:08 AM
Is a Differential Pair (CCS tail) phase inverter suitable for a Class AB outputstage?	stigla	Tubes / Valves	7	27th March 2007 01:57 PM
simple but powerful	sr2002	Chip Amps	19	1st August 2005 06:20 PM


	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 July 2007, 04:07 PM	#2
Saturnus diyAudio Member Join Date: Jun 2005 Location: Copenhagen, Denmark	A www.41hz.com amp9 with all 4 channels parallelled should give you around 100 watts into 1 Ohm on a 13.2 volts supply.

17th July 2007, 12:03 PM	#3
jaya000 diyAudio Member Join Date: Dec 2006	Yes. But cost will be too high. I am looking 4 solution previously offered by probably IRF chip solution. It was giving 80W@.75 ohms. It was simple, cheap. waiting for more solutions like this.

17th July 2007, 07:40 PM	#5
Arx diyAudio Member Join Date: Aug 2003 Location: North Vancouver, B.C.	it should be doable with a low enough impedance, though your cables will all need to be ridiculously huge. -Nick

17th July 2007, 11:17 PM	#7
Arx diyAudio Member Join Date: Aug 2003 Location: North Vancouver, B.C.	probably 4 dvc woofers in parallel. I'm not saying it makes a lot of sense, just that it's doable. From 12v you're going to have to choose between not enough power into one speaker, or not enough power into 4 speakers. It's probably as cheap to buy 2 speakers and build an inverter to drive them properly.

19th July 2007, 06:27 PM	#8
jaya000 diyAudio Member Join Date: Dec 2006	Dual voice coil car woofers r easily available. by just buying two speakers i can get 1 ohm impedance. Hence looking for above solution.

19th July 2007, 06:46 PM	#9
Arx diyAudio Member Join Date: Aug 2003 Location: North Vancouver, B.C.	It does seem a tad silly though getting 4 woofers and then having under 100W to drive them. -Nick

20th July 2007, 05:00 AM	#10
jaya000 diyAudio Member Join Date: Dec 2006	arx, i think u hv not understood. I am talking of buying two woofers of dual voice coil. This can be 8 ". So i think the power 80~100W@1 ohm i require is ok for my car.

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

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read