I am going, now, to blow up the drivers in the subwoofer box I just built.
I tried to blow them up, yesterday.
I was more than impressed with their performance. The drivers are thirty five watt (each) six inch car audio drivers made by Isofon, a German, old school company. In my fourth order cabinet, I was able to put almost two hundred watts of clean power on them, yesterday, from forty hertz to one hundred eighty hertz, using an eighteen dB per octave roll-off, electronic crossover.
I ran them at that power level for twenty minutes and then shut them down, immediately pulled the box open to test them for heat discomfort. I saw none. I saw no evidence of mechanical failure, either. These little drivers, according to the manufacturer, should only be able to tolerate around seventeen volts, across their collective four ohms.
I pushed them to just over twenty seven volts for twenty minutes! The amp I was using clips at twenty eight volts, so I made sure that it did not clip. I was very surprised to see nothing explosive happen. I just heard lots of relatively clean bass! As a matter of fact, this little box was hitting peaks of one hundred twelve dB at one meter from the port mouth.
IsoBomb kicks ass!
(I think it really works.)
Never thought that these little mid quality drivers would take the full power of my two hundred watt amplifier, but today I am going to use my thousand watt amplifier and go for broke, literally. I plan to bring the voltage level up to twenty seven volts again and very gradually increase the voltage, two volts at a time, until they become distorted or until they overheat and fail.
