STK 361 weaker IC as power amp than LA 4440 STK 361, Amplifier

[cozz in or out]

Hi ,
i dreamt of a good poer amp for long and found circuit that tells
360W amp
had input for all like tuner ,cd etc

I hv assembled it .however after running the power amp with some
inputs
i was surprized to see that the AMP is very weak ..
it needed 15a-0-15a supply ..that cosed 20% more

whole amp kit costed 40% more ...finally I to discover that it is v
poor
as compared to kits with 4440 ICs ..

Is STK 361 weaker IC as power amp than LA 4440 ,please coment ..

 

[[email protected]]

Hi ,
i dreamt of a good poer amp for long and found circuit that tells
360W amp
had input for all like tuner ,cd etc

I hv assembled it .however after running the power amp with some
inputs
i was surprized to see that the AMP is very weak ..
it needed 15a-0-15a supply ..that cosed 20% more

whole amp kit costed 40% more ...finally I to discover that it is v
poor
as compared to kits with 4440 ICs ..

Is STK 361 weaker IC as power amp than LA 4440 ,please coment ..

do you have a power supply that can provide at least 720 W? Class AB
amplifiers are only 50% efficient or so, so you'll need to provide
double the juice it needs from your power supply.

 

[cozz in or out]

do you have a power supply that can provide at least 720 W? Class AB
amplifiers are only 50% efficient or so, so you'll need to provide
double the juice it needs from your power supply.

thanks ,
360 w PMPO that was the title of the circuit published in
'Electronics for you ' magazine ...STK 361 is some 25 or 50w rms
chip i think ..
Is the power supply that might be the cause ??
the Amp was running fine ...amplifying but But very poor Output.....

(i hope a power supply *stronger* than normal PSs of 12-0-12 3 Amp LA
LA4440 based amps should be sufficient ])

 

[Eeyore]

do you have a power supply that can provide at least 720 W? Class AB
amplifiers are only 50% efficient or so, so you'll need to provide
double the juice it needs from your power supply.

thanks ,
360 w PMPO that was the title of the circuit published in
'Electronics for you ' magazine ...STK 361 is some 25 or 50w rms
chip i think ..
Is the power supply that might be the cause ??
the Amp was running fine ...amplifying but But very poor Output.....

(i hope a power supply *stronger* than normal PSs of 12-0-12 3 Amp LA
LA4440 based amps should be sufficient ])

Neither are even remotely anywhere near 360W ! You should be able to see that
from the power supply voltage !

http://www.electronica.ro/audio/LA4440.shtml - it's 19W

The magazine is LYING.

Graham

 

[cozz in or out]

cozz in or out wrote:

thanks ,
360 w PMPO that was the title of the circuit published in
'Electronics for you ' magazine ...STK 361 is some 25 or 50w rms
chip i think ..
Is the power supply that might be the cause ??
the Amp was running fine ...amplifying but But very poor Output.....

(i hope a power supply *stronger* than normal PSs of 12-0-12 3 Amp LA
LA4440 based amps should be sufficient ])

Neither are even remotely anywhere near 360W ! You should be able to see that
from the power supply voltage !

http://www.electronica.ro/audio/LA4440.shtml - it's 19W

The magazine is LYING.

Graham- Hide quoted text -

- Show quoted text -

that 360 PMPO wattage is a marketig term i know .... u can see SONY
6000w music system being sold in nearby show room ..which takes 40-80w
power while running ...

but the query still remains unanswered ... why is STK 361 is giving
weak output ..than LA 4440 [i know LA4440 gives sufficient amount of
output for normal home use ..i wanted a more powerful AMP ...and ended
up with STK 361]..

i have heard that STK 361 is used with SONODYNE soundsystems....must
be having good power inside ....

 

[[email protected]]

Hi ,
i dreamt of a good poer amp for long and found circuit that tells
360W amp
had input for all like tuner ,cd etc

I hv assembled it .however after running the power amp with some
inputs
i was surprized to see that the AMP is very weak ..
it needed 15a-0-15a supply ..that cosed 20% more

whole amp kit costed 40% more ...finally I to discover that it is v
poor
as compared to kits with 4440 ICs ..

Is STK 361 weaker IC as power amp than LA 4440 ,please coment ..

Dears
I think you should try on KIA6216H ICs, May be it gives you better
result .

I.K.KHAN