Building 2 way x-overs advice needed.

crossroads · 8th December 2006, 11:14 PM

Hi all. I want to build 2 way x-overs for mini-monitors start with 2 mid/woofers Sea p 14 RCY 396 ( 5" 44-4000 Hz 90db ) and 2 LPG tweeters ( 1" 730-2000 Hz 90db ) the x-over point I have in mind's 2700 Hz bc this was original x-over fr. As 1st order Butterworth I should have .47 mH to the woofer and 7.3 uF to the tweeter, my question is should I input series Notch filter or Zobel network to it. Please give your inputs I would greatly appreciated. Happy Holiday Seasons.

sreten · 9th December 2006, 04:11 PM

Hi,

Build a properly designed, documented and tested project.

Such as for 14cm / 15cm bass/mids :

http://www.zaphaudio.com/audio-speaker12.html
http://www.zaphaudio.com/audio-speaker13.html
http://www.zaphaudio.com/audio-speaker19.html
http://www.rjbaudio.com/Microbe/microbe.html
http://www.rjbaudio.com/Calypso/calypso.html

/sreten.

crossroads · 11th December 2006, 02:51 PM

Thanks for the links.

crossroads · 12th December 2006, 01:52 PM

After I read those designs but wonder my drivers are differents if one of those x-o still work ? But if I use the above x-o calculations do I need to put a series Notch filter to tweeter or and mid/woofer ? This is calculation for the tweeter Re=6.8, Fs=730:
C= 41.14 uF
L= 1.03 mH
R= 6.8 OHMs
Are these value of Notch filter correct ? Appreciated any help.

sreten · 12th December 2006, 03:58 PM

Hi,

H396 are ancient, where did you get them from ?

/sreten.

crossroads · 13th December 2006, 02:05 AM

They're from Silverline Audio SR-12 ~ 7yrs old, but the last owner modded them just 1x 3.3uF Jensen aluminum silver foil cap ? ( it's huge 1 -1/2 " x 2-1/2" ) and .47 mH 14 awg. inductor. I'm not sure if these X-O value are correct that's why I try to ask for help. Looks like he crossed the tweeter @ 5,960 Hz, that's very high while the woofer's @ 2,700 Hz and this I don't understand. The speakers sound bright. Hope some one will point me to the right dirrection. Thanks.

crossroads · 13th December 2006, 11:49 PM

Thanks to everyone for stopped by.

crossroads · 15th December 2006, 01:28 AM

Anyone ? NO ?

sreten · 15th December 2006, 12:50 PM

http://www.silverlineaudio.com/modul...article&sid=33

According to the above the crossover should have at least 3 components.
Try an L-pad or L-pad value resistors on the tweeter.

Most c/o component values do not match simplistic c/o calculations.

/sreten.

8th December 2006, 11:14 PM	#1
crossroads diyAudio Member Join Date: Jul 2005 Location: Arizona	Building 2 way x-overs advice needed. Hi all. I want to build 2 way x-overs for mini-monitors start with 2 mid/woofers Sea p 14 RCY 396 ( 5" 44-4000 Hz 90db ) and 2 LPG tweeters ( 1" 730-2000 Hz 90db ) the x-over point I have in mind's 2700 Hz bc this was original x-over fr. As 1st order Butterworth I should have .47 mH to the woofer and 7.3 uF to the tweeter, my question is should I input series Notch filter or Zobel network to it. Please give your inputs I would greatly appreciated. Happy Holiday Seasons.

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Advice for Building Modula MTs	gee_boi	Multi-Way	23	6th February 2008 05:00 AM
Building the Karlson K12 Need advice	fin1bxn	Multi-Way	0	29th January 2007 02:30 PM
Building Subwoofer Cross Overs?	Dominick22	Subwoofers	15	22nd September 2006 08:15 PM
New to building, need some advice.	msharpe	Multi-Way	7	31st January 2006 08:23 PM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

9th December 2006, 04:11 PM	#2
sreten diyAudio Member Join Date: Nov 2003 Location: Brighton UK	Hi, Build a properly designed, documented and tested project. Such as for 14cm / 15cm bass/mids : http://www.zaphaudio.com/audio-speaker12.html http://www.zaphaudio.com/audio-speaker13.html http://www.zaphaudio.com/audio-speaker19.html http://www.rjbaudio.com/Microbe/microbe.html http://www.rjbaudio.com/Calypso/calypso.html /sreten.

11th December 2006, 02:51 PM	#3
crossroads diyAudio Member Join Date: Jul 2005 Location: Arizona	Thanks for the links.

12th December 2006, 01:52 PM	#4
crossroads diyAudio Member Join Date: Jul 2005 Location: Arizona	After I read those designs but wonder my drivers are differents if one of those x-o still work ? But if I use the above x-o calculations do I need to put a series Notch filter to tweeter or and mid/woofer ? This is calculation for the tweeter Re=6.8, Fs=730: C= 41.14 uF L= 1.03 mH R= 6.8 OHMs Are these value of Notch filter correct ? Appreciated any help.

12th December 2006, 03:58 PM	#5
sreten diyAudio Member Join Date: Nov 2003 Location: Brighton UK	Hi, H396 are ancient, where did you get them from ? /sreten.

13th December 2006, 02:05 AM	#6
crossroads diyAudio Member Join Date: Jul 2005 Location: Arizona	They're from Silverline Audio SR-12 ~ 7yrs old, but the last owner modded them just 1x 3.3uF Jensen aluminum silver foil cap ? ( it's huge 1 -1/2 " x 2-1/2" ) and .47 mH 14 awg. inductor. I'm not sure if these X-O value are correct that's why I try to ask for help. Looks like he crossed the tweeter @ 5,960 Hz, that's very high while the woofer's @ 2,700 Hz and this I don't understand. The speakers sound bright. Hope some one will point me to the right dirrection. Thanks.

13th December 2006, 11:49 PM	#7
crossroads diyAudio Member Join Date: Jul 2005 Location: Arizona	Thanks to everyone for stopped by.

15th December 2006, 01:28 AM	#8
crossroads diyAudio Member Join Date: Jul 2005 Location: Arizona	Anyone ? NO ?

15th December 2006, 12:50 PM	#9
sreten diyAudio Member Join Date: Nov 2003 Location: Brighton UK	http://www.silverlineaudio.com/modul...article&sid=33 According to the above the crossover should have at least 3 components. Try an L-pad or L-pad value resistors on the tweeter. Most c/o component values do not match simplistic c/o calculations. /sreten.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)