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Chip Amps Amplifiers based on integrated circuits

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Old 26th May 2004, 09:11 AM   #1
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Join Date: May 2004
Location: Magdeburg
Smile Stk-chips

Hello, to all users.

I am new here and have only times a question:
Why not STK412-170 with 2x180W power H-Class ?
Thanks for the answers!

Best Regards

Mike
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Old 26th May 2004, 05:36 PM   #2
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Join Date: Apr 2004
Location: Varna,Bulgaria
Well i think STK is a good choice at all but not this one...
This one haves 0,7%THD ..
This is too much.
Look at this one:
http://www.electronics-lab.com/downl.../STK4048XI.pdf

If you make 2 channels whith this one you will be comletly satisfied...

it have 150W @65V - 0,008%THD.
IT is a HibrydIC Clas AB.

I`m currently searching for a bridging technik for 4048XI..
If someone have one pls tell me.
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Old 27th May 2004, 05:22 AM   #3
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Join Date: Feb 2004
Location: Vancouver
I just built the example circuit for the STK4122 II , but only the left channel for now.

Tested it out and its not working at all. Do I need some sort of pre amp? just a pot?

Or do I just have to finish off the right channel

btw my Velodyne subwoofer uses STK chips as well, so they must be alright. (although your right, THD is a little high).


thanks


edit: I think my problem is I have no ground on the transformer. Only V+ and V-. hm
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