Most Underrated subs? (power)

[CBFryman2 5,000+ posts]

You are still missing the point. I can put a 2000w amp on a 20w co-axil and not blow it....

 

[CBFryman2 5,000+ posts]

And thoes who claim to run that power, what evidence do they have to back it? A true RMS clamp meter and Volt meter wont always yeild accurate results.

 

[DeuceLee 10+ year member]

You are still missing the point. I can put a 2000w amp on a 20w co-axil and not blow it....

my point wasn't if you can put a 4000 watt into a 4 inch speaker while putting the gain to almost nothing or putting it on the sub for .5 seconds...

i'm asking what sub is underrated in that it can take a certain amount of power over its manufacture recommended power, set properly and on a daily basis...

if what you're saying is true, then everyone should be able to put 2000wrms into a jl 12w0 and set the gains so it puts out 2000 wrms and bang that sub daily and will have no problems...if thats the case then i'm totally missing something...

 

[CBFryman2 5,000+ posts]

You are tottally missing something as that is not the case. If you read my write up you would see that as inductance takes place the current begins to move out of phase with the voltage. As it does this the wattage will drop. In my example I used the normal 90* method for simplicity as that is what is most commonly descirbed with inductive circuts. How do I know the subwoofer wll be inductive? The subwoofer uses inductance to converty electrical power to electromagnetic power. The sub then uses the stationary magnet to convert the electromagnetic energy to mechanical energy...sound. A subwoofers impeadance is everchanging in most casses. If a sub is rated at 500w, is a 1ohm nominal load, and you put a 1500w@1ohm amplifier on it does not mean the sub will be seeing 1500w even with correctly set gains. The sub's impeadance could rise to 2ohm which would mean the most the amplifer could put out is 750w in most casses. 250w underrated isnt uncommon. Now on top of this, even if you did get 750w of apparent power doesnt mean you are getting 750w RMS. This is because current likely moved out of phase with voltage. True power could be 500 or even less. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[DeuceLee 10+ year member]

You are tottally missing something as that is not the case. If you read my write up you would see that as inductance takes place the current begins to move out of phase with the voltage. As it does this the wattage will drop. In my example I used the normal 90* method for simplicity as that is what is most commonly descirbed with inductive circuts. How do I know the subwoofer wll be inductive? The subwoofer uses inductance to converty electrical power to electromagnetic power. The sub then uses the stationary magnet to convert the electromagnetic energy to mechanical energy...sound. A subwoofers impeadance is everchanging in most casses. If a sub is rated at 500w, is a 1ohm nominal load, and you put a 1500w@1ohm amplifier on it does not mean the sub will be seeing 1500w even with correctly set gains. The sub's impeadance could rise to 2ohm which would mean the most the amplifer could put out is 750w in most casses. 250w underrated isnt uncommon. Now on top of this, even if you did get 750w of apparent power doesnt mean you are getting 750w RMS. This is because current likely moved out of phase with voltage. True power could be 500 or even less. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

alright bro, this stuff is deep...hehe, i'll take your word for it...thanks for the learning experience too...//content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

 

[CBFryman2 5,000+ posts]

The better you understand the physics and mechanics of what you are working with the better you can judge how much more you can push it. //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

 

[CBFryman2 5,000+ posts]

More added. If you are caught up please add to the discussion.

 

[CBFryman2 5,000+ posts]

http://www.soundsolutionsaudio.com/forum/index.php?showtopic=8810&st=0entry269955

 

[B_Campbell 10+ year member]

you know **** well why you get chronically flamed. it all comes down to lying.

hahahah

 

[DaBeholder 10+ year member]

boy got flamed!

 

[DeuceLee 10+ year member]

boy got flamed!

thanks for your marvelous input, you sir are an asset to this community

 

[NDMstang65 10+ year member]

Just curious, are you talking about the ripple that is created in the power supply of the amplifier?

If that's the ripple that your talking about then check out and read some articles on how it is controlled...

 

[JohnBlayz142 10+ year member]

Back ON topic

The original JL W6's and W3's were known to take nearly double their rated power and last for years while doing it.

 

[CBFryman2 5,000+ posts]

No, I'm talking about the difference between Apparent Power (Volts RMS * Amps RMS) and True Power (Watts RMS).

//content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[lilmaniac2 5,000+ posts]

No, I'm talking about the difference between Apparent Power (Volts RMS * Amps RMS) and True Power (Watts RMS).
//content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

how is it u measure true power then ?