Originally Posted by Dreamliner
Its not a myth. I do acknowledge both are possible but FAR MORE people destroy drivers from exceeding the amplifier capability than by exceeding the driver capability. By the way, what's the dB level at 29,000 watt? 200dB?
I also said this in that post:
only 128dB before smoking. there is only so much that can be done with a single 12 inch 4000 watt driver. when it was in a van with sixteen 15 inch drivers it did 172dB. i did not own the van, but they were my amps... and i was nowhere near the van when they did that run. i have an insane amount of high end car and home audio equipment in my shop that i have been collecting since the mid 1970's.
when i first heard that myth, it was about 20 years ago. a person told me that when i was fixing his Marantz 100 watt x 2 amp. he was using some Seas midrange and tweeters that were rated at 70 watts RMS. ( and yes, they are crossovered perfectly, as verified by my oscilloscope ) i told him to check his speakers with a multimeter because the output section of the amp in one channel was toast. of course, he knew more than anyone in the world about audio and ignored me.
so after the amp was fixed, he hooked it up and immediately fried the same channel.
i went there to check his system and sure enough, one of the midranges was dead shorted. the voice coil was cooked.
so of course, he again did not listen, and replaced it with the exact same speaker.
one month later, the other channel blew out... the same damage.
so i actually gave him a set of 100 watt RMS Dynaudio speakers, and he has been using them for the last 20 years, with the same amp. i took his speakers, and replaced the bad one, and have been using them on my 1977 mid line Pioneer ( 45 watts x 2 ) that i have in my shop office since then too.
you may not think it is a myth, but i can give at least 50 examples with my customers that prove it is a myth.
but yes, clipping an amp is just as destructive. but at least i can hear the clipping before it happens.
there is actually a lot of audio myths... one "expert" in the past on a forum, tried to tell me one... about an amp that i was the sole engineer for.
Originally Posted by Engineer99
I won't be experimenting with this but I think you would bottom out the sub drivers producing a loud "BAM!". This could be destructive depending on the design of the voice coils.
not this one though. specifically designed SPL driver that has at least 3 inches of travel before total mechanical limit. normal operation at 4000 watts RMS is 1.6 Xmax. i built the driver.