Fostex "rated input" and "music power" - Page 2

robertG · 15th March 2006, 07:49 PM

Rated input refers to maximum sustained power (using noise).

Music power refers to dynamics (the difference between loud ans soft).

In the Fostex example, more than 30W of continuous noise will fry the voice coil, but if playing music, it will take up to 90W of power for a very brief period of time without damage.

But all of this is more or less useful as music power does not discriminate for frequency content. It is very possible to damage the Fostex with 20 watts of 20Hz continuous tone.

Then again, if you factor in the efficiency of the driver, it's a non issue since playing music with 90w peaks in a typical room will get you deaf pretty quickly anyway!

hugz · 16th March 2006, 08:32 AM

Quote:

Originally posted by robertG
Rated input refers to maximum sustained power (using noise).

Music power refers to dynamics (the difference between loud ans soft).

In the Fostex example, more than 30W of continuous noise will fry the voice coil, but if playing music, it will take up to 90W of power for a very brief period of time without damage.

But all of this is more or less useful as music power does not discriminate for frequency content. It is very possible to damage the Fostex with 20 watts of 20Hz continuous tone.

Then again, if you factor in the efficiency of the driver, it's a non issue since playing music with 90w peaks in a typical room will get you deaf pretty quickly anyway!

Ah that's the response I was waiting for. Thankyou very much!

AndrewT · 16th March 2006, 04:33 PM

Is it?

16th March 2006, 04:33 PM	#13
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	Is it? __________________ regards Andrew T.

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15th March 2006, 07:49 PM	#11
robertG diyAudio Member Join Date: May 2005 Location: Montreal	Rated input refers to maximum sustained power (using noise). Music power refers to dynamics (the difference between loud ans soft). In the Fostex example, more than 30W of continuous noise will fry the voice coil, but if playing music, it will take up to 90W of power for a very brief period of time without damage. But all of this is more or less useful as music power does not discriminate for frequency content. It is very possible to damage the Fostex with 20 watts of 20Hz continuous tone. Then again, if you factor in the efficiency of the driver, it's a non issue since playing music with 90w peaks in a typical room will get you deaf pretty quickly anyway!

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