Subwoofers DO put out power

[Ctesibius 10+ year member]

You spelled humor wrong. They don't teach you anything in your canuck schools?

That's how they spell it up there.

Colour, Humour, etc.

 

[bose301s 5,000+ posts]

That's how they spell it up there.
Colour, Humour, etc.

Crazy Canucks //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

 

[mokedaddy 5,000+ posts]

That's how they spell it up there.
Colour, Humour, etc.

I blame it on the French. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

Yes I know that is how they spell it in England

 

[Flipx99 5,000+ posts]

That's how they spell it up there.
Colour, Humour, etc.

See, mark, this is why I think I am in the Thunderdome.......

I'll let it slide.

 

[Ctesibius 10+ year member]

Stupid question.

The unit for the rate of heat transfer is the watt.

Watts by definition is the SI unit of power, equivalent to one joule per second.

How come we measure heat transfer with the unit of power if it isn't power //content.invisioncic.com/y282845/emoticons/confused.gif.e820e0216602db4765798ac39d28caa9.gif

 

[mokedaddy 5,000+ posts]

Stupid question.
The unit for the rate of heat transfer is the watt.

Watts by definition is the SI unit of power, equivalent to one joule per second.

How come we measure heat transfer with the unit of power if it isn't power //content.invisioncic.com/y282845/emoticons/confused.gif.e820e0216602db4765798ac39d28caa9.gif

The same reason amp manufacturers dont rate their amps at 100% efficiency. I mean watts are watts right?

 

[mrogowski 5,000+ posts]

See, mark, this is why I think I am in the Thunderdome.......

I'll let it slide.

I think this thread should be combined with the rest in the Thunderdome.

 

[Papermaker85 5,000+ posts]

your using the definition out of context...

 

[Ctesibius 10+ year member]

The same reason amp manufacturers dont rate their amps at 100% efficiency. I mean watts are watts right?

The efficiency ratings for amplifiers are measuring the amount of electrical input to electrical output.

So, now that we cleared that up.......back to my original question........

 

[bose301s 5,000+ posts]

your using the definition out of context...

Wrong, the definition is only used 1 way, and it is being applied correctly here.

 

[Ctesibius 10+ year member]

your using the definition out of context...

So, describing the thermodynamics of a loudspeaker with the established scientific definitions of heat transfer and watts would be using them out of context //content.invisioncic.com/y282845/emoticons/confused.gif.e820e0216602db4765798ac39d28caa9.gif

 

[mokedaddy 5,000+ posts]

The efficiency ratings for amplifiers are measuring the amount of electrical input to electrical output.
So, now that we cleared that up.......back to my original question........

Why?

 

[mokedaddy 5,000+ posts]

"The first law of thermodynamics states that the energy of a closed system is conserved. Therefore, to change the energy of a system, energy must be transferred to or from the system. Heat and work are the only two mechanisms by which energy can be transferred to or from a control mass. Heat is the transfer of energy caused by the temperature difference."

A subwoofer is not a closed system. Heat dissipates into the atmosphere.

 

[Ctesibius 10+ year member]

"The first law of thermodynamics states that the energy of a closed system is conserved. Therefore, to change the energy of a system, energy must be transferred to or from the system. Heat and work are the only two mechanisms by which energy can be transferred to or from a control mass. Heat is the transfer of energy caused by the temperature difference."
A subwoofer is not a closed system. Heat dissipates into the atmosphere.

Here's another quote for you;

"In physics, a closed system can exchange heat and work (aka energy), but not matter, with its surroundings."

or

"A closed system is one where no material is transferred across the system boundaries. Only heat and work are transferred to the system"

I'm not thermodynamics expert......but we would be studying a system that is transferring heat and work but not matter when discussing the system we are discussing.

 

[mokedaddy 5,000+ posts]

Exactly my point: HEAT AND WORK....

If they were one and the same why the need for both?

Yes I know heat is work when transferred but otherwise its just energy potential.

Anyways gentlemen, the banter has been real and enlightening, I will check back tomorrow. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif