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Re: Pre Compensation Load on X-OVERS and L-Pads [message #48516 is a reply to message #48515]

Tue, 03 January 2006 15:15

Wayne Parham
Messages: 18787
Registered: January 2001

Illuminati (33rd Degree)

The load on the crossover is a complex reactance. Since the loudspeaker itself is a reactive load, all passive networks share this trait. In the π crossover, there is a filter circuit comprised of R1, R2 and C1 that modifies the load as well as providing attenuation and top-octave augmentation. The components chosen set the Q of the crossover filter so that there is a flat region just above the crossover frequency before HF augmentation begins (as shown below). If you would like, you can download and investigate the circuit further with Spice.

Signal across tweeter using π crossover

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[Message index]

		Pre Compensation Load on X-OVERS and L-Pads By: dB on Tue, 03 January 2006 14:28
		Re: Pre Compensation Load on X-OVERS and L-Pads By: Wayne Parham on Tue, 03 January 2006 15:15
		Re: Pre Compensation Load on X-OVERS and L-Pads By: dB on Fri, 06 January 2006 04:50
		Re: Pre Compensation Load on X-OVERS and L-Pads By: Wayne Parham on Fri, 06 January 2006 08:48
		Re: Pre Compensation Load on X-OVERS and L-Pads By: dB on Tue, 10 January 2006 17:04
		Re: Pre Compensation Load on X-OVERS and L-Pads By: Wayne Parham on Tue, 10 January 2006 20:28
		Re: Pre Compensation Load on X-OVERS and L-Pads By: dB on Wed, 11 January 2006 12:29

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