Low power vs. High power amplifiers

[blak]

Relativa treaba cu arsu... teoretic se arde...practic e altceva.... Ati ars vreounul vreun difuzor asa?
Altii asculta pe casetofon cu distorsiuni la maxim si nu se ard boxele din usi.... un exemplu irelevant... dar oricum...
Pun eu la bataie un difuzor cu tot cu incinta Philips de 40W RMS deci 20W RMS cu distorsiuni ...

[blak]

P.S Am avut un domotec MS-800 si dadeam cu 125W RMS si cu distorsiuni ...si canta la bairame ...deci e cu dus si intors treaba...

[vpower16v]

mda...asa e...si stii d c nu se arde? pt k ,caldura produsa d cei 20w rms nu depaseste caldura produsa d 500 w rms curati...asta asa k exemplu.....bobinele totusi sunt si ele destul d rezistente....zic eu.......cu c amplificator vrei sa l arzi (apropo d philips) ? k dak o sa fie un audison....sau alt ceva...mie k nu se va arde nici cu 100...

[blak]

As avea si un amplif....dar e de 5W RMS cu 10thd un egalizator cu TDA2005....

[Swat-Cat]

Originally Posted by blak

Relativa treaba cu arsu... teoretic se arde...practic e altceva.... Ati ars vreounul vreun difuzor asa?
Altii asculta pe casetofon cu distorsiuni la maxim si nu se ard boxele din usi.... un exemplu irelevant... dar oricum...
Pun eu la bataie un difuzor cu tot cu incinta Philips de 40W RMS deci 20W RMS cu distorsiuni ...

se pare ca tu ai inteles ce ziceam eu

[viperu]

Pentru a continua discutiile intr-o maniera constructiva va rog sa cititi urmatoarele:

Speaker's Power Rating
http://www.bcae1.com/speakrat.htm

Too Little Power Blowing Speakers
http://www.bcae1.com/2ltlpwr.htm

[Swat-Cat]

thx. pt link-uri..

The effective voltage of the white line is ~1.414 x the yellow line. This means the the total power driven into the speaker by the clipped (square wave) signal is double the power delivered by the 'clean' signal (yellow line). This means that the power is double but the cooling of the voice coil will not increase in proportion with the power increase (since the voice coil isn't moving as much as it needs to be for the given power dissipation). This will lead to the voice coil overheating. If we compared the output of a 100 watt amp (the one that's clipping) to a 200 watt amp, the 200 watt amplifier would be able to push the speaker as much as 40% farther than the 100 watt amp (depending on the frequency of the signal). This extra travel (in each direction from its point of rest) would result in added airflow around the voice coil.

[vpower16v]

un material interesant facut de cei de la JBL pro .