OPA549 GC for Car

[rehanabid]

Hi guys:
I have lots of OPA549 chips lying around and was thinking of designing a GC for subwoofer to be used in my car, OPA549 data sheet suggests that it could be operated via single supply, as I am a usual lamer, therefore i was looking forward if anyone in this forum could guide me as how to make a GC with OPA549 with single supply of 12Volts?
Any help will be appreciated.

 

[bigmike216]

it can certainly be done, but at 12v single supply, you're not going to get more than a few watts..

 

[mod_evil]

Hi friend, how i found rms in my OPA549T amp?

 

[Sashi]

Hi friend, how i found rms in my OPA549T amp?

Hi Friend,look here
http://www.diyaudio.com/forums/showthread.php?threadid=14768

 

[mod_evil]

Ohhh friend, thanks for the link! When i paraleling 2 OPA549 the W drouble?

 

[bigmike216]

the wattage won't double when you parllel, unless you're driving low loads. Bridging will though.

 

[rehanabid]

OPA549

Well I was planning to use three OPA549s in bridge parallel mode as mentioned in data sheet, and it will deliver some nice output, but my question remains the same
HOW TO USE 12volt supply?
any ideas/ suggestions?

 

[mod_evil]

http://www.diyaudio.com/forums/showthread.php?s=&threadid=53501&highlight=

You need connect the V- to the GROUND...


Thanks.

 

[rehanabid]

thanks

thanks mod_evil , link that u have posted is of great help, let me work out the schematics for bridged parallel woofer for car and i ll post the same here.
Rehan

 

[mod_evil]

Okay... Can you post in here the schematic of your bridged parallel OPA549?

 

[mod_evil]

The Schematic of single supply : OPA549 http://www.diyaudio.com/forums/attachment.php?postid=598098&stamp=1110921201&

 

[rehanabid]

sure i will post the schematics here.