Has anyone tried the LM4940?

dedick · 7th April 2009, 12:30 AM

I'm looking to build a small amp for use in a car. I was thinking about the LM4940. Has anyone tried it? If so, what do you think of it? What did you do for heat sinking?

Thanks in advance.

sasmit · 10th April 2009, 05:09 AM

it's too puny ... 6Watts with 10% distortion isn't going to be up to the job especially in a car. It's probably less than 3watts at 1% or less distortion.It might be fine for small computer speakers ..

dedick · 11th April 2009, 08:30 AM

I probably shouldn't have said it was for car use. It isn't for a traditional car stereo. I mentioned it so people would realize I'm powering it from 12 volts, which eliminates a lot of the traditional chip amp choices. The output is exactly what I'm looking for. I just wanted to see if this chip had good sonic performance.

AndrewT · 12th April 2009, 09:37 AM

power from 24V will be better.

7th April 2009, 12:30 AM	#1
dedick diyAudio Member Join Date: Apr 2009	Has anyone tried the LM4940? I'm looking to build a small amp for use in a car. I was thinking about the LM4940. Has anyone tried it? If so, what do you think of it? What did you do for heat sinking? Thanks in advance.

12th April 2009, 09:37 AM	#4
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	power from 24V will be better. __________________ regards Andrew T.

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

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

10th April 2009, 05:09 AM	#2
sasmit diyAudio Member Join Date: May 2006	it's too puny ... 6Watts with 10% distortion isn't going to be up to the job especially in a car. It's probably less than 3watts at 1% or less distortion.It might be fine for small computer speakers ..

11th April 2009, 08:30 AM	#3
dedick diyAudio Member Join Date: Apr 2009	I probably shouldn't have said it was for car use. It isn't for a traditional car stereo. I mentioned it so people would realize I'm powering it from 12 volts, which eliminates a lot of the traditional chip amp choices. The output is exactly what I'm looking for. I just wanted to see if this chip had good sonic performance.

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