In reply to:

i might have to go get a phd just to understand half the stuff you guys are talken about.



Here's the "car guy version"...

12" vs 10" driver in sub... think of the 10" as a '70 Charger with a 340cid engine. Think of the 12" as a dump truck with a Cat C12 engine.

Start them beside each other... tell them go... they "should be able to go a city block in 10 seconds" so after 10 seconds - tell them to stop and reverse 2 blocks, wait 20 seconds, tell them to go forward 2 blocks again, repeat... who has the better chance of stopping on a dime and reversing direction without slowing down as they hit each extreme? Just as the Charger hits the turnaround mark, the dump truck may only be a few lengths into it's travel when it gets the signal to reverse direction. It's not an accurate representation of the "waveform".

If what you're trying to reproduce is a vehicle moving back and forth two block every 20 seconds - the Charger will "represent" that a lot better than the dump truck will (which if viewed by itself will look like the idea is to go 40 feet each way every 20 seconds!)

And for what all that terminology means:

-the waveform amplitude is 2 blocks (the total peak to peak difference)
-the frequency is 0.05Hz (20 seconds per complete cycle - 1 divided by 20) can one of you math types check that? That seems right to me?

Bren R.