this installer deserves to be UNinstalled from car audio with this story he told me..

[forceofwill 10+ year member]

lol @ 220 DB.

pretty sure that would kill him.

seeing how its only possible underwater or so...

I am teh win for quoting myself, in my post, about what i just said

Lol seriously, did you ask him if his name was Mt. St. Helens?

 

[iamamp3pimp 5,000+ posts]

haha i doubt st helens was 220db.

the force would have to kill you

 

[CHIT0WNZHUSTLA 10+ year member]

gain tutorial FTL!

 

[snoopdan 5,000+ posts]

yes, 200+dbs is possible.194 is the sinusoidal limit of air, the point at which it transforms into shockwaves.

oh yeah, and tcabs 1 type r 10.

 

[Lakota 5,000+ posts]

I give you props for actually thinking about it and testing it yourself, instead of bullshiting like all the cool kids do

 

[helotaxi 5,000+ posts]

haha i doubt st helens was 220db.
the force would have to kill you

Depending on how close you were to the blast, it would have killed you...

 

[pikers 10+ year member]

lol if he said the max power was continuous i would never get my shit installed at that store! then i'd call him a ****in moron and tell him i know more car audio shit then him. //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

I think the installer meant RMS, not "all the time", which some people constantly confuse.

You don't want stupid kid stories; they would destroy in sheer quantity and humor value stuff like this.

And I always have to wonder why people ask questions like this to folks when they already (allegedly) know the answer. People that work in shops hear basic questions all the time, get tired of hearing them, and provide lazy answers. Sad, but reality.

 

[CBFryman2 5,000+ posts]

If you take a given amplifier, let's say 100 watts and operate it just below clipping with music material, the "Crest Factor" of the amplifier's output is equivalent to the "Crest Factor" of the program material.
"Crest Factor" is the difference between the average level of the signal and its peak level. For example, a pure sine wave has a "crest factor" of 3dB, meaning that it's peak level is 3dB higher than its average level. We all know that 3dB represents a power factor of 2, so another way to look at it is that the peak power of the signal is twice that of its average level. So, if we play a sine wave on our 100 watt amplifier, just below its clipping level, the average power (over time) the speaker is needing to dissipate is 50 watts.

A true square wave, by comparison, has a crest factor of 0db, so it has equal average and peak power. Our 100 watt amplifier, playing a square wave, unclipped, into our speaker requires that the speaker dissipates 100 watts of power (twice the heat as a sine wave).

ummmm, no?

Peak or "crest" Voltage will yeild 2 times as much power as the Root Mean Squared (RMS) or "Average" voltage, yes. However, if the amp is rated at say 10v RMS into a 1ohm *note* load that means that it has an "average" power output of 100w with a true sine wave into the given nominal impeadance

*Note* you dont actually have RMS wattage, just voltage, but since power is directly proportional to voltage it is understood that 'RMS' wattage means that the amp can sustain the RMS voltage to sustain the given wattage at that particualr load

If you see an amplifier rated at 100w RMS its peak power ouput will be 200w RMS

just like if you see a sub with a rating of 100w RMS its peak rating should be 200w RMS. OR visaversa, a 200w peak sub SHOULD be able to handle 100w RMS. Except for in the instance that the company rates as a matter of peak RMS for burps and constnant RMS power. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

Companies are all out to confuse n00bx's.

Music has a significantly higher crest factor than sine waves or square waves. A highly dynamic recording (Sheffield Lab, Chesky, etc.) typically has a crest factor of 20dB or more, meaning that its average power is 100 times lower than its peak power. So, if we play our 100 watt amplifier just below clipping with the typical audiophile recording our speaker is only needing to dissipate 1 watt of average power over time.
Modern commercial recordings typically exhibit crest factors of around 10dB, meaning that the average power is 10 times lower than the peak power. So, our 100 watt amp just below clipping would deliver an average power over time of 10 watts that the speaker has to dissipate.

this, however, is 100% true.

 

[SATX210]

lol if he said the max power was continuous i would never get my shit installed at that store! then i'd call him a ****in moron and tell him i know more car audio shit then him. //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

so he is the dumbass, while you still cant install your own stuff

 

[SATX210]

any info/

 

[AcidicDreams 10+ year member]

so what exactly is the difference between a soundwave and a shockwave

 

[Remotia 10+ year member]

so what exactly is the difference between a soundwave and a shockwave

A shockwave has to do with constructive interference. A shockwave is not limited to sound, just like waves are not limited to sound. A wave can propagate through many mediums. The wake a boat makes at a reasonable speed is actually a shock wave. A shockwave occurs when the source of the wave is propagating as fast or faster than the speed of the waves. What happens is you get this V effect and on the outside of the V is a super wave that is the in phase (constructive interference) of as many waves as there are relating to the frequency at which the waves occur.

 

[Remotia 10+ year member]

haha i doubt st helens was 220db.
the force would have to kill you

Mt. Krakatoa was 180dB some 100 miles away, its estamated it was over 330dB at the source.

 

[Volenti 10+ year member]

Mt. Krakatoa was 180dB some 100 miles away...

Was this on Termlab or AC?

 

[ugmoe2000 10+ year member]

Was this on Termlab or AC?

lol nice!