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Re: Does anybody here know how to add and subtract? [message #14918 is a reply to message #14916]

Tue, 05 April 2005 17:42

Wayne Parham
Messages: 18706
Registered: January 2001

Illuminati (33rd Degree)

When you short the voice coil, you increase damping. That makes Qts go down. When the voice coil is open, it has no effect, no change on Qts. When you partially short it, as in putting a resistor across it of a few ohms, it is in between.

This is in parallel with the output impedance of the amplifier. Less impedance makes more damping, lower system Q. Higher output impedance makes less damping, higher total Q.

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[Message index]

		Does anybody here know how to add and subtract? By: wunhuanglo on Tue, 05 April 2005 17:30
		Re: Does anybody here know how to add and subtract? By: Wayne Parham on Tue, 05 April 2005 17:42
		Well, dammit... By: wunhuanglo on Tue, 05 April 2005 20:37
		Re: Well, dammit... By: Wayne Parham on Wed, 06 April 2005 04:21
		Unfortunately.... By: wunhuanglo on Thu, 07 April 2005 01:57
		Re: Unfortunately.... By: Wayne Parham on Thu, 07 April 2005 04:52

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