what is best?

[tadiam]

what is best?

An lm1875 or an stk080 module.

For me the stk have more mid bass but less trable and the lm1875 have
more trable but the bass are more soft...the detail is best but the voices are back.
any opinion?

the two amps have quasi output.

[pacificblue]

Nobody will be able to decide, what is best for you.

The STK hybrid-ICs come in a wide variety of output powers, but I think even the smallest of them should rather compare to the LM3875 or LM3886 than to the LM1875. As much in power rating as in price for a complete amplifier.

Such a comparison will probably lead you to a different conclusion and maybe to an easier decision.

The bigger STKs have much more output power, so will have more dynamics, but will also be much more expensive to build, if you consider power supply and heatsinking.

[tadiam]

here not is cheap the lm3886 and 3875 and not have in stock.the price is higth.one lm cost me 3 stk 080 modules ...
the power not is the problem i listen music at low volume.

[pacificblue]

Originally posted by tadiam
here not is cheap the lm3886 and 3875 and not have in stock.the price is higth.one lm cost me 3 stk 080 modules

Curious. Over here it is just the other way round. LM3886 5,05 €, STK080 14,95 €.

Originally posted by tadiam
the power not is the problem i listen music at low volume.

That calls for a class A amp instead of a chipamp.

[Rainwulf]

The STK series have a bit of a bad rep for THD. I would go for class A as well for your low power listening, if you have decent speakers.

Looking at the data sheet, an stk-8x series chip has around .2 percent THD. Thats fairly ridiculous considering a modern discrete class AB amp kit you can buy for under 100 dollars has under 0.02 percent THD.

The reason your LM1875 is probably lacking is that it probably has a underperforming Power supply, which is fairly common. Its THD is under 0.015 percent. A hell of a lot better then a STK module.

I guess the question really is, when you say "best" what do you think as "best" for you?

use the STK for a subwoofer amp if you must, where the THD wont bother you.

In australia, an STK 086 module (80 watts) costs around 14 dollars, and an LM1875 is around 7 dollars.
A LM3875 is 13 dollars.

[tadiam]

i buy the stk 080 (2) one per channel..in 1995.this are sanyo.
maybe now is more cheap because this are FAKE?
The electronics shops no have stock only sales the more easy components.no buy components for sale.this situation is more bad since the last year.

[kim707]

The Lm is the best

[tadiam]

my option here is buy old types components.(power transistors)
Have more fakes components in the shops what genuine parts.
No have relation in the prices.
in some shops cost more an cheap cap and in other buy an MKT type for the same price or half price.
Here the lm1875 cost U$$ 2 dollars.
An 2n3055 1 dollar an tip35 1,5 dollar an 2sc5200 4 dollar
I can buy the best components but no have the certitude what this are genuine.
.much work to make an good amp and the dude is here........
i build some class amps

[Rainwulf]

If you can, avoid the power transistors, the chances of them being fake is fairly high, especially the toshiba devices.

I would honestly go for a chip amp in this case, no one will willingly fake an STK chip thats for sure. LM1725, maybe. Either way the chances of getting a fake integrated amp is a lot lower then a fake power transistor.

There are websites that show you what components are fake, but i know for a fact that a lot of high power toshiba devices are faked. TIP35 probably wont be, not enough power.

They will only fake devices that are expensive to begin with and have good power handling.

[kim707]

Originally posted by Rainwulf
If you can, avoid the power transistors, the chances of them being fake is fairly high, especially the toshiba devices.

I have built some amps using fake parts and they work!!!


hint: if cheap = fake, for sure!!!

I burn lots of amps they work for a while hehe and then go up in smoke I like chips they work!!!