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Audio equipment
amplitude power calculation
159
hace 5 años
hace 5 años
hello I hope you can help me I have been working with my sony grx8 to which I put the stk 4231 ii in btl I kept its original source and I have working a 12 "baffle soundbarrier specifically the 1201x dj that the manufacturer is 100w continuous - 200 program -400 peak. range 40hz-20khz-8ohm SPL 113 db-bobima 2 "
Now, before putting the stk in btl, I used this baffle with no problems and it worked normally, but now the speaker gets hot, so much so that I can pray I fear it will break down. that does sound really hard
the equipment in its factory configuration gave me on its outputs 5 or 6v ac and now it gives me 22v ac. That said it is notorious that there was an increase in power but what power is it delivering?
According to Sanyo, the STK4231II delivers 100 + 100w reais, because I doubt it, now if I get 5 to 6v at the start, it delivers 100w, now that it gives me 20 to 22v, it would deliver 400w, which I don't believe either.
so these are the real figures that I have
20 to 22v at the output and load of 8ohm I am unaware of the amperage of the source.
My concern is that my speaker is damaged and I also wanted to change his piezo tweeter for a driver but for that I want to know what power the driver in question.
Here the page of the speaker I use
http://www.soundbarrier.com/product-p/dj1201x.htm.
Here sanyo stk 4231 http://www.alldatasheet.es/datasheet-pdf/pdf/41608/SANYO/STK4231II.html
It should be clarified that the equipment sounds good without distortion and with serious wobbles throughout the woofer it seems that it is going to leave the box, that is, I do not think that it is warmed up due to lack of power, thank you very much
65.783
hace 5 años
hace 5 años
to know the real power in watts you must use the formula V2 / R that is the alternating voltage measured at the square output divided by the resistance (z) of the speaker in ohms. 22 volts squared is 484 divided 8 (ohms ) = 60.5 watts that is the real power of the team, if I think it was more sorry I miscalculated. Do not confuse rms power with musical power or pmpo. Greetings
159
hace 5 años
thanks Victor for your help that calculation had done it and like you gave me 60 w, and I didn't believe it either, because I never thought that the people of Sanyo lied so ugly, because that means that stk 4231 instead of giving 100 + 100w as Sanyo says in its normal configuration which gives 6x6v = 36v / 8 (ohms) = 4.5w. Then this team that claims to be 100 + 100w comes to give 4.5w of factory. is that so ?. That's where I have the mess I don't know if I explain myself, don't get confused noo I want to enter into debate with you or anything similar to the contrary I am grateful that you help me.
159
hace 5 años
but I do not want to buy that damn driver and burn it for erring in the power and unless the soundbarrier of 12 is damaged by lack of power. Can you imagine the 12 "sound is damaged and I cut them haha.
Now, based on these calculations, does it mean that the replacement speakers for this Sony Grx8 should be 10w and not 70 to 100w as I thought?
if you can clear me that doubt please thank you very much
159
hace 5 años
Thank you for responding and well what do you recommend if you put a driver? that is the wattage because it was not there but here they are salty one of 100w = u $ 30 that according to the seller yields 70w and the one that follows is 200w = 51 usu. the issue is the following is like the piezo tweeter now drowns, that is the woofer covers it I don't know if I explain.
159
hace 5 años
ok thank you very much champion, now the last question I ask you and I get you out of this penance haha. Do you think those watts are real? that is 86w at + -55v.
health
159
hace 5 años
I ask you that because my source provides + -49v, that is, it is symmetrical just like the one you mentioned above and with that source I have the 6 v output to the speaker per channel with which making calculations gave us only 4.5w per channel and there I went back to the beginning. as I mentioned above I am unaware of the amperage of the source
159
hace 5 años
haha warm yes, well champion thank you very much for your time I will continue investigating this to see that wave in principle handle the same calculations as you and gave me 60w just like you, then drive that if the stk 100 + 100w were real and how in theory in btl the power quadrupled gave me 400w, but I thought where 400w is going to get this crap, haha there are those who told me to look at the consumption, which is 270w and that assured that the consumption was linked to the I don't know if it's really like that.
well dear a hug from uruguay and really grateful for your time
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