2 Way X-over Design help

jaycool1995 · 7th January 2010, 01:04 AM

Hi,
I would like to build a 2-way system consisting of the hivi tn28 and tweeter and hivi m5a as woofer. I was thinking of x-over of about 3500hz. I would just like some advice on things to do with the x-over things like dealing with the cone break and BSC. This is my third build, so i am not entirely new to it

Any advice on how to go about it ?
Thanks
Jay

PeteMcK · 01:58 AM

To deal with AL cone break up, the usual solution is a series notch filter:
http://www.diyaudioandvideo.com/Calc...otch/Help.aspx

(although that site is quite wrong (& it’s repeated on other Car Audio sites) to say that “ Series Notch Filters are designed to dampen driver resonance at its resonance frequency Fs ”)

For BSC, the LP inductor is sized according the frequency determined by your cabinet width: http://www.quarter-wave.com/General/BSC_Sizing.pdf

Michael Chua · 7th January 2010, 02:20 AM

Hi Jay

I tried the M5a at 3,500Hz before. Was too much trouble. Too near the cone breakup.

Went lower to 2,500Hz. No problem with cone breakup. More details can be found at ROBIN

Mike

7th January 2010, 01:04 AM	#1
jaycool1995 diyAudio Member Join Date: Jul 2009	2 Way X-over Design help Hi, I would like to build a 2-way system consisting of the hivi tn28 and tweeter and hivi m5a as woofer. I was thinking of x-over of about 3500hz. I would just like some advice on things to do with the x-over things like dealing with the cone break and BSC. This is my third build, so i am not entirely new to it Any advice on how to go about it ? Thanks Jay

7th January 2010, 01:55 AM	#2
PeteMcK diyAudio Member Join Date: Feb 2002 Location: Sydney	To deal with AL cone break up, the usual solution is a series notch filter: http://www.diyaudioandvideo.com/Calc...otch/Help.aspx (although that site is quite wrong (& it’s repeated on other Car Audio sites) to say that “ Series Notch Filters are designed to dampen driver resonance at its resonance frequency Fs ”) For BSC, the LP inductor is sized according the frequency determined by your cabinet width: http://www.quarter-wave.com/General/BSC_Sizing.pdf __________________ ‘today… there lives alongside the twentieth century the tenth or thirteenth. A hundred million people use electricity and still believe in the magic power of signs and exorcisms” Trotsky Last edited by PeteMcK; 7th January 2010 at 01:58 AM.

7th January 2010, 02:20 AM	#3
Michael Chua diyAudio Member Join Date: Jul 2006 Location: Calais, ME	Hi Jay I tried the M5a at 3,500Hz before. Was too much trouble. Too near the cone breakup. Went lower to 2,500Hz. No problem with cone breakup. More details can be found at ROBIN Mike __________________ AmpsLab.com

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