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Old 19th July 2007, 08:01 AM   #1
nitinbose is offline nitinbose  India
diyAudio Member
Join Date: Jul 2007
Default Stk412-170

Hello Everyone,

I'm also intersted in building a system using the STK412-170 chip.

Has anyone already built the amplifier? If yes, How do you rate the performance?

Is it possible to have a 180W+180W continous RMS output for the full dynamic audio range, or the chip is only good for a subwoofer?

I'm planning to build based on the attached data sheet. Can such datasheets be trusted, or should there be some modifications done?

How do you suggest the PCB layout?

The data sheets indicate two different power supplies to be used. I want to know if we may use a single transformer but with tappings for the two voltage outputs, and use two sets of rectifiers for the DC outputs.

awaiting your feedback,

thanks and regards,

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File Type: pdf stk412-170.pdf (61.6 KB, 237 views)
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Old 15th May 2008, 03:54 PM   #2
pcbking is offline pcbking  India
diyAudio Member
Join Date: Mar 2007

Hi Everybody,

I am also going to make this amp. I have already made many chip-amps using STK chips.

I have procured the STK412-150 chips through a friend. PCB is getting ready.

I will keep the you informed about the developments.

Thanks and regards,

Daljeet Singh
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Old 23rd February 2009, 12:08 PM   #3
shon35us is offline shon35us  United States
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Default PCB'S

Can you post the board layout, I would like to see it!
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Old 24th February 2009, 09:27 AM   #4
pacificblue is offline pacificblue  Germany
diyAudio Member
Join Date: May 2008
Default Re: Stk412-170

Originally posted by nitinbose
The data sheets indicate two different power supplies to be used. I want to know if we may use a single transformer but with tappings for the two voltage outputs, and use two sets of rectifiers for the DC outputs.
Yes, you can.
If you've always done it like that, then it's probably wrong. (Henry Ford)
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Old 29th April 2010, 02:52 AM   #5
TRANSDUCEReng is offline TRANSDUCEReng  Malaysia
diyAudio Member
Join Date: Sep 2004
Location: Malaysia
Default Good news!

Hi guys,
I have lot`s of info on this STK412-170 as i believe it`s actually the best high power AMP around.In fact it was actually used in the Sony MHC-DX9,VX99 miniHIFI`s back in 2000 (i do own one) and really delivers about 300watts RMS perchannel.
I do own a stock of this genuine Sanyo ic`s back then and hoped i would find the time build the amp modules but sadly i did not get the time, so i`m planning to sell them off.
Pls beware that new stocks on ebay of these IC`s are fake and are widely sold allover.
You can verify this by checking the below spanish link Taringa! - Por que los Equipos Reparados Vuelven al Service?
If are interested in the real thing pls drop me a mail at franbargain@yahoo.com..
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Old 19th August 2015, 06:36 PM   #6
KrishanthaSampath is offline KrishanthaSampath
diyAudio Member
Join Date: Feb 2014
Can you pls anyone let me know power supply design for STK412-170? Data sheet mentioned that it should be shift power supply. Can we use only one power supply (Vh) for this? Can you pls mention how the pin 7 would be connected?

Last edited by KrishanthaSampath; 19th August 2015 at 07:02 PM.
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