Hello,

I'm actually posting in regards to the sound system I have in my bedroom. Recently I was listening to some music fairly loud. Two of the rear surround speakers have blown. The speakers that blew are rated at 50watts each. My receiver is capable of supplying 100 watts to each of these speakers. Does anyone have an idea as to why they both blew? The front speakers along with the other surround speakers are still working fine. The little dome part in the center of the speaker looks dented now on the blown ones compared to the ones that aren't blown which are still a nice solid dome shape. Any help would be appreciated. Thanks.

 

Could be any number of reasons, but Ill try to figure it out. To the best of my knowledge, the SPEAKER is what draws the power, so if the amp is rated 100W rms, and the speaker only 50, it should only take 50. Speakers 99% of the time blow from distortion. You probably played some bassy tunes and the speakers didnt like it, so they blew. Just get new good quality speakers that can handle more than your amp supplies. (Klipsh, Cambridge, Infinity, JBL....etc)

 

Does your Receiver have fuses for the speakers? I would check that.

 

[QUOTE]Originally posted by NFRs2000NYC
the SPEAKER is what draws the power, so if the amp is rated 100W rms, and the speaker only 50, it should only take 50.

 

[QUOTE]Originally posted by MacGyver

 

I love it when mac and modifry fight. It's like Godzilla vs. King Kong.
















I am kidding of course. I know they are not fighting.

 

Since I'm considered an expert on this subject, I'll just say that in 30yrs experience in the audio industry, I could count on 1 hand all the speakers that were blown with too much power. In all the rest of the cases, speakers were blown due to distortion, either from a not so good amplifier, or from turning up the volume to a point that the amp could no longer reproduce the signal cleanly. Remember...........watts is current X voltage............if you have a lower impedance speaker such as a 4ohm one for example, it requires more current from the amp. If you are using an amp that is more voltage based..........voila'..............you end up with a blown speaker. Let me know if you have any specific questions regarding your audio systems..................I would be glad to assist............................................ .....................Bob

 

[QUOTE]Originally posted by ruexp67
I love it when mac and modifry fight. It's like Godzilla vs. King Kong.

 

Bob, I would be EXTREMELY careful with this type of statement, especially in this forum. Be prepared to back up that kind of statement with some cold, hard facts. I hold an MSEE from a top ten university and have worked in the audio/video field for quite a few years designing amplifiers, cross-switches, video equipment, etc. While I don't know the exact credentials of modifry, I would trust him without hesitation to look over one of my circuits and find a way to make it better. And we're just two of many guys on here that have been hacking away at these kinds of questions/issues for years. So be forewarned, we take our theory seriously here, and we are always (well, almost always ) prepared to back that theory up with fact (such as the amplifier stiffening capacitor debate we held a year or so ago and Bob hit the workbench to prove/disprove our theories). I'm particularly anal about exact wording (even though I screw it up from time to time and modifry keeps me honest...if he would stop checking my calculations I might actually get away with proving 2+2=5 some day)

[QUOTE]I'll just say that in 30yrs experience in the audio industry, I could count on 1 hand all the speakers that were blown with too much power.

 

Phil,

Take two nails and stick them in to opposing ends of a large dill pickle so the nails are about an inch apart. Hook up the same cord you mentioned and plug it in...watch the pickle glow

Oh, don't forget to wear rubber gloves.