professional opinion

rv1890 · 12th January 2005, 07:02 AM

I plan on building a 3 way loudspeaker system....Each loudspeaker in a seperate chamber. I wanted to get an opinion on the crossover before I began building...how does this sound...

1" Tweeter: 2K-20K .....Fs=900Hz
6" Mid : 45-3.5K
8" Woofer: 27-2K

Tweeter/Mid crossover: 3rd order at 3000 Hz
Mid/Woofer crossover : 1st order at 600Hz

Im barely trying to learn this....Am I on the right track??....Would these drivers work well with eachother?/

Thanks

LaMa · 12th January 2005, 02:50 PM

Try to measure the individual frequency and impedance response of each driver in the speaker cabinet which will be used. With information out of those measurements you can start thinking about the the actual cross-over. And maybe with the help of some simulation software start designing your filter.

Yes the drivers should work, but without measurements you don't get the maximum out of it. Tuning by ear of a cross-over out of textbook calculations just doesn't converge to an optimal speaker.

If you don't want to go through all this, then you should consider an existing proven DIY design.

To design a good speaker is quite difficult and when you are just starting with this hobby and want to get better and build more speakers you have to get a measuring setup (just a basic mic + pre-amp + speakerworkshop will do)

BillFitzmaurice · 12th January 2005, 04:22 PM

First, why a 6" mid? It is so close to the eight in response that it hardly serves a purpose.

There's no reason to cross the 8 over at less than 1kHz, so go with a 2" or so dome mid if you want to go 3way.

Even better, go with two 6 inch woofers in an MTM , cross to the tweeter at 2.5 to 3.5 kHz, get the improved dispersion of an MTM and simplified topology of a 2 way crossover.

12th January 2005, 07:02 AM	#1
rv1890 diyAudio Member Join Date: May 2004 Location: U.S.	professional opinion I plan on building a 3 way loudspeaker system....Each loudspeaker in a seperate chamber. I wanted to get an opinion on the crossover before I began building...how does this sound... 1" Tweeter: 2K-20K .....Fs=900Hz 6" Mid : 45-3.5K 8" Woofer: 27-2K Tweeter/Mid crossover: 3rd order at 3000 Hz Mid/Woofer crossover : 1st order at 600Hz Im barely trying to learn this....Am I on the right track??....Would these drivers work well with eachother?/ Thanks

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
ESS Professional Speakers	popacana	Multi-Way	5	27th June 2007 02:38 AM
I need a professional opinion...	sparky3489	Car Audio	0	25th June 2006 03:31 AM
Need professional solution	babu123	Class D	5	1st March 2005 04:47 AM
Professional Anodizing - How to?	tiroth	Everything Else	20	30th January 2004 08:15 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

12th January 2005, 02:50 PM	#2
LaMa diyAudio Member Join Date: Sep 2002 Location: NL	Try to measure the individual frequency and impedance response of each driver in the speaker cabinet which will be used. With information out of those measurements you can start thinking about the the actual cross-over. And maybe with the help of some simulation software start designing your filter. Yes the drivers should work, but without measurements you don't get the maximum out of it. Tuning by ear of a cross-over out of textbook calculations just doesn't converge to an optimal speaker. If you don't want to go through all this, then you should consider an existing proven DIY design. To design a good speaker is quite difficult and when you are just starting with this hobby and want to get better and build more speakers you have to get a measuring setup (just a basic mic + pre-amp + speakerworkshop will do)

12th January 2005, 04:22 PM	#3
BillFitzmaurice Banned Join Date: May 2004 Location: New Hampshire	First, why a 6" mid? It is so close to the eight in response that it hardly serves a purpose. There's no reason to cross the 8 over at less than 1kHz, so go with a 2" or so dome mid if you want to go 3way. Even better, go with two 6 inch woofers in an MTM , cross to the tweeter at 2.5 to 3.5 kHz, get the improved dispersion of an MTM and simplified topology of a 2 way crossover.