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Old 9th December 2017, 04:55 AM   #11
PRR is offline PRR  United States
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Originally Posted by diy1995 View Post
... original samsung wb-650. ...on the back of samsung was writen 150w...
Is it this product?

I know the series. The "150W" is the total input power, before amplifier losses, and including the snazzy CD round-about. The actual audio power output was more like 40 Watts in the main channels, and into an odd impedance load.

And our experience was that these units would overheat and shut-down in heavy use. We had to retire them from classroom use.

If you are trying to salvage the transformer and heat sinks, you need to figure out just what DC voltages are on the main power supply. Then we can back-think to what chips can work and what power can be made.
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Last edited by PRR; 9th December 2017 at 04:59 AM.
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Old 9th December 2017, 02:34 PM   #12
diy1995 is offline diy1995
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Join Date: Jan 2017
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Originally Posted by PRR View Post
Is it this product?

I know the series. The "150W" is the total input power, before amplifier losses, and including the snazzy CD round-about. The actual audio power output was more like 40 Watts in the main channels, and into an odd impedance load.

And our experience was that these units would overheat and shut-down in heavy use. We had to retire them from classroom use.

If you are trying to salvage the transformer and heat sinks, you need to figure out just what DC voltages are on the main power supply. Then we can back-think to what chips can work and what power can be made.
Hello, i have stk 442-090 from it and I already ordered all the parts for it.
Stk442-090 was not for main channels, but for subwoofers. Main channel used alot smaller stk that I trow away because it was defective and I can't remember the exact model.

I also have 200va transformer that will output 32vdc so I will use that one if original won't be strong enought and I think that overhitting shouldnt be the problem because in the samsung there were 2 stks on one heatsink and now it will be only one. If not I will upgrade heatsink or install the fan.
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Old 9th December 2017, 03:39 PM   #13
diy1995 is offline diy1995
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Join Date: Jan 2017
Location: Slovenia
Quote:
Originally Posted by PRR View Post
Is it this product?

I know the series. The "150W" is the total input power, before amplifier losses, and including the snazzy CD round-about. The actual audio power output was more like 40 Watts in the main channels, and into an odd impedance load.

And our experience was that these units would overheat and shut-down in heavy use. We had to retire them from classroom use.

If you are trying to salvage the transformer and heat sinks, you need to figure out just what DC voltages are on the main power supply. Then we can back-think to what chips can work and what power can be made.
Yes this is the product.
I had 250rms 4ohm car sub connected to it blasting at max for some time and there were no problems.
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