Please explain attenuation?

SamClassA · 6th October 2006, 11:49 AM

How do u determine the Negative attenuation of your tweeter (4ohm) in a 3 way system?

Cal Weldon · 6th October 2006, 11:12 PM

Are you asking how much attenuation is in your XO?

SamClassA · 7th October 2006, 12:31 AM

Hi Cal. what it is, I'm building a 3 way project and my bass and Tweeter are both 91db efficient, my Midrange is 88db. Should I attenuate the Tweeter and Bass to bring them in line with the Midrange, using a L-Pad circuit in the crossovers?

Cal Weldon · 7th October 2006, 12:46 AM

You may wish to put an L-pad on the tweeter but may not need anything on the woofer. It depends on your objective with the speaker. It is easier to attenuate the higher frequencies. Also, a lot of woofers are rated for an SPL at a frequency higher than the XO point so it may not need anything.

SamClassA · 7th October 2006, 12:49 AM

Thanks Cal good point, it makes the building of the Xovers easier.

6th October 2006, 11:49 AM	#1
SamClassA diyAudio Member Join Date: Jul 2006	Please explain attenuation? How do u determine the Negative attenuation of your tweeter (4ohm) in a 3 way system?

6th October 2006, 11:12 PM	#2
Cal Weldon Speakerholic diyAudio Moderator Join Date: Jan 2004 Location: British Columbia	Are you asking how much attenuation is in your XO? __________________ Next stop: Margaritaville Some of Cal's stuff \| Cal Weldon Consulting

7th October 2006, 12:46 AM	#4
Cal Weldon Speakerholic diyAudio Moderator Join Date: Jan 2004 Location: British Columbia	You may wish to put an L-pad on the tweeter but may not need anything on the woofer. It depends on your objective with the speaker. It is easier to attenuate the higher frequencies. Also, a lot of woofers are rated for an SPL at a frequency higher than the XO point so it may not need anything. __________________ Next stop: Margaritaville Some of Cal's stuff \| Cal Weldon Consulting

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7th October 2006, 12:31 AM	#3
SamClassA diyAudio Member Join Date: Jul 2006	Hi Cal. what it is, I'm building a 3 way project and my bass and Tweeter are both 91db efficient, my Midrange is 88db. Should I attenuate the Tweeter and Bass to bring them in line with the Midrange, using a L-Pad circuit in the crossovers?

7th October 2006, 12:49 AM	#5
SamClassA diyAudio Member Join Date: Jul 2006	Thanks Cal good point, it makes the building of the Xovers easier.

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