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Re: Is calculations of L-pads based on "nominal impedance" or Re? [message #18669 is a reply to message #18666]

Wed, 29 March 2006 08:43

Wayne Parham
Messages: 18786
Registered: January 2001

Illuminati (33rd Degree)

If you want to do it right, you have to consider actual impedance. Your padding values will not just set attenuation but will also affect the Q of the circuit, which will adjust an amount of peaking or damping. The impedance curve of horns has ripples near lower cutoff, and these can be quite severe. When properly setup, the attenuation resistors will smooth these ripples and make overall response better.

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[Message index]

		Is calculations of L-pads based on "nominal impedance" or Re? By: Peter K on Tue, 28 March 2006 23:56
		Re: Is calculations of L-pads based on "nominal impedance" or Re? By: Wayne Parham on Wed, 29 March 2006 08:43
		Re: Is calculations of L-pads based on "nominal impedance" or Re? By: Peter K on Wed, 29 March 2006 10:05
		Re: Is calculations of L-pads based on "nominal impedance" or Re? By: Wayne Parham on Wed, 29 March 2006 10:41
		Re: Is calculations of L-pads based on "nominal impedance" or Re? By: Peter K on Wed, 29 March 2006 11:38
		Re: Is calculations of L-pads based on "nominal impedance" or Re? By: Wayne Parham on Wed, 29 March 2006 12:10
		Re: Is calculations of L-pads based on "nominal impedance" or Re? By: Peter K on Wed, 29 March 2006 12:29

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