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Really?

Measurements were taken at 10 seconds because there is a myth that a woofer will have fully burned in within the first few seconds of use. Measured data obviously does not support that myth.

I also posted the differences due to temperature changes that occur when the driver is played hard verses after a cool down period. Some were unaware of this.

Having measured drivers at various stages of the burn in process I would compare the changes in the T/S parameters to this illustration.

Take a woofer that has been playing for many years and take the T/S parameters. This represents an end result.

Now take a new driver and measure it.

Play it hard for about a hour. Parameters are now somewhere in the middle, halfway between where they were and where they will end up

Now for each time that you double the amount of time on the driver you can move the parameters to a range that makes them half way towards the fully burned in unit.

Double time again and move half way again...

You eventually get to a point that the next doubling of time is a lot of time and there is a very little change in the parameters.

At some point you have to say that it has reached a settle range and is burned in.

This measured data was only posted to show the change and the time needed for it to occur. It was not meant to prove audible differences.

To most people the audible effects are very apparent. But depending on your system (quality of), your room, your listening habits, and even you (your own hearing), you still may not notice a difference.

Danny Richie


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