burned up 2 type r 12"s last night

[Prowler573 5,000+ posts]

Not trying to be a dick, but you clipped the shit out of them. So I would take this as a lesson learned. We all have been there one time or another. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

Speak for yourself //content.invisioncic.com/y282845/emoticons/rolleyes.gif.c1fef805e9d1464d377451cd5bc18bfb.gif I have never once burnt up/blown a subwoofer since I first became interested in aftermarket car audio. I have sold, swapped, upgraded, etc.....but I've never once burned one up, tyvm!

 

[Mr. Opportunist 10+ year member]

i smoked 1 type-r b/c of a bad ground w/ my viper 2500.1

 

[SBLAZER]

love that sig

 

[flakko 5,000+ posts]

If clipping destroys speakers and not power is it not logical to assume that you could hook up a 1000 watt RMS subwoofer to one of the channels of a head unit and burn the hell out of the voice coils??.
I'm waiting for your answer.

i say you can kill a speaker both by clipping AND overpowering. send a strong enough clipped signal to any speaker and it will blow.... also send a clean 1kw signal to a rated 50w speaker it will blow

you are saying sending a clipped 200w signal to a rated 200w sub wont kill it? i think ill have to disagree with that....

 

[Prowler573 5,000+ posts]

love that sig

Gotta agree, SBLAZER....that one is worth preserving for posterity, for sure!

 

[Jdizzle 10+ year member]

i havent blown a woofer either....unless i've done i've done it on purpose lol...unless you count knockin the neons inside of a pheonix gold octane r woofer loose blowing it

 

[stones 10+ year member]

Nobody here seems to understand what happens when an amplifier starts to clip.

The term clipping refers to when sine wave gets "clipped" at the top and bottom, since this is not a accurate representation of the original curved sine wave the audible reproduction is "distorted". Because of the nature of a clipped sine wave it can possibly damage the suspension of the speaker but NOT burn the coil.

A secondary thing that happens when an amplifier is driven into clipping is voltage spikes, an amplifier that would normally put out 40 volts at rated power can more then double its output voltage when driven into clipping, this increase is rapid right up to the point where the amp either go into protection or blows its fuses.

This increase in voltage output is the source of the thermal overload.

This also explains why a 20 watt rms amp would not be able to damage a 1000 watts RMS woofer, driven to its absolute death it would not have enough voltage output to thermally damage the coil.

To say that clipping burns voice coils is technically incorrect, the only way to burn a voice coil is to exceed its thermal limits by giving it too much power.

Subwoofers in SPL comps are subjected to extreme and severe clipping on a regular basis and sometimes more then quadruple their rated power. The subwoofers survive this abuse by simply not being exposed to the excessive power long enough for thermal breakdown.

Put that shit in your sig noobs.

 

[flakko 5,000+ posts]

Nobody here seems to understand what happens when an amplifier starts to clip.
The term clipping refers to when sine wave gets "clipped" at the top and bottom, since this is not a accurate representation of the original curved sine wave the audible reproduction is "distorted". Because of the nature of a clipped sine wave it can possibly damage the suspention of the speaker but NOT burn the coil.

A secondary thing that happens when an amplifier is driven into clipping is voltage spikes, an amplifier that would normally put out 40 volts at rated power can more then double its output voltage when driven into clipping, this increase is rapid right up to the point where the amp either go into protection or blows its fuses.

This increase in voltage output is the source of the thermal overload.

This also explains why a 20 watt rms amp would not be able to damage a 1000 watts RMS woofer, driven to its absolute death it would not have enough voltage output to thermally damage the coil.

To say that clipping burns voice coils is technically incorrect, the only way to burn a voice coil is to exceed its thermal limits by giving it too much power.

Subwoofers in SPL comps are subjected to extreme and severe clipping on a regular basis and sometimes more then quadruple thier rated power. The subwoofers survive this abuse by simply not being exposed to the excessive power long enough for thermal breakdown.

so yea clipping WILL kill a sub, as well as overpowering.

 

[bigbangtheory 5,000+ posts]

Speak for yourself //content.invisioncic.com/y282845/emoticons/rolleyes.gif.c1fef805e9d1464d377451cd5bc18bfb.gif I have never once burnt up/blown a subwoofer since I first became interested in aftermarket car audio. I have sold, swapped, upgraded, etc.....but I've never once burned one up, tyvm!

Kinda bold dont ya think? You are 32 and never once had something blow on any audio equipment? I guess when I started out I wasnt as smart as you or knew when to turn it down. I mean most of us have at one time or another. I guess I am the only one that will admit it.//content.invisioncic.com/y282845/emoticons/rolleyes.gif.c1fef805e9d1464d377451cd5bc18bfb.gif

 

[stones 10+ year member]

so yea clipping WILL kill a sub, as well as overpowering.

Yes, but in this instance we are talking about burning voice coils.

A 500 watt clipped signal into a a subwoofer that has the thermal ability to handle 500 watts will not damage the voice coil, it can however damage the suspention depending on the build quality of the woofer due to the non linear movement caused by the clipped sine wave.

Hence-

Clipping doesn't burn voice coils too much power does.

 

[Prowler573 5,000+ posts]

Kinda bold dont ya think? You are 32 and never once had something blow on any audio equipment? I guess when I started out I wasnt as smart as you or knew when to turn it down. I mean most of us have at one time or another. I guess I am the only one that will admit it.//content.invisioncic.com/y282845/emoticons/rolleyes.gif.c1fef805e9d1464d377451cd5bc18bfb.gif

Nope - not bold at all. The discussion was centered around having destroyed a pair of subwoofers. You said that we had all been there at one time or another. I chose to correct you and request that you speak for yourself as I have never destroyed a subwoofer. Not once.

Having said that ~

Can I in all honesty tell you that I have never burned up a piece of audio equipment? No, I absolutely cannot. The very first aftermarket HU I ever owned, a Coustic RX504 which I got for the 1st car I ever owned when I was 15, was destroyed by hooking up entirely too many speakers of varying voice coil configurations to the internal amp. Wires strewn all over the car, speakers sitting loose on the dashboard, etc etc etc. There's no way to tell for certain as that was 17 years ago I did this but I'd imagine the final resistance being shown to the HU's internal power would have been in the fractions of an Ohm. The result was a rather acrid smelling smoke and the need for a new stereo soon thereafter.

Later in my audio 'career' I had a Kenwood KRC-301 (I think was the model #) tape deck in a 3/4 ton Dodge I owned once. I sat a canned Sprite on the dashboard as I was leaving the house one afternoon and before I got very far I was forced to make an evasive manuever that resulted in the can tipping over and emptying its contents into the middle of my dash then trickling down into the back of the stereo. It got sent in for warranty repair three times but the tape portion of it never worked quite right ever again.

So, no. Not bold at all. What I said was entirely correct in reference to what I was responding to.

 

[bigbangtheory 5,000+ posts]

You are correct SIR! So what do you want a cookie?

 

[Prowler573 5,000+ posts]

You are correct SIR! So what do you want a cookie?

Nope. I'm not a half-bad cook and am perfectly capable of making my own cookies should the desire strike.

What I would like is for you to quit making assumptions about things you obviously know little or nothing about.

Have a nice day! //content.invisioncic.com/y282845/emoticons/wave.gif.002382ce7d7c19757ab945cc69819de1.gif

 

[Pyro_By_Nature 5,000+ posts]

amps dont magically gain power by clipping.....

In a nut shell, they do. //content.invisioncic.com/y282845/emoticons/rolleyes.gif.c1fef805e9d1464d377451cd5bc18bfb.gif

 

[Arawak420 10+ year member]

actually these subs never seemed to be able to handle the power of the amp. when loudest listening the subs would make that bottoming out sound. that to much power sound subs make. like i said in an earlier post the bass was smooth and responsive. really loud to where my ears flutter and then no sound from them. think i over drove them by being sealed. if ported they would have hit the range i was looking for with the volume on 25 instead of 35.

low pass was at 80hz

amp almost halfway up on to type r's in 1ohm. the amp was clock at putting out 1439rms at some comp. it is posted on car domain