3-way studio monitor design recommendation

rhythmdiy · 14th August 2008, 09:48 PM

1 inch dual concentric Wavecor Tweeter
http://www.wavecor.com/html/tw030wa02.html

6 1/4 inch wavecor midwoofer
http://www.wavecor.com/html/wf160wa01.html

10 inch Vifa PL26W
http://www.tymphany.com/pl26wr09-04

can anybody recommend the crossover design?

I have the following design but I would like to use a L-pad atten for the tweeter any further recommendations...

I want to put the tweeter open just by putting two screws so that the tweeter will remain on the outer side... what do u suggest?

PeteMcK · 14th August 2008, 10:26 PM

Did you use the actual (measured) impedance of the drivers at the crossover frequencies you selected when calculating your parts values?

rhythmdiy · 14th August 2008, 10:26 PM

how much will be the baffle gain for these drivers so that i can compensate it in the crossover...

pjpoes · 14th August 2008, 10:31 PM

Thats completely Dependant on your baffle shape and size. It's far more ideal to measure the response of the drivers and take from there, however, if you can not, then there are ways to "fudge" the rest. You still need the drivers measurement from some source, and then trace the graph. Then you have to process that response so that the effect of the chosen enclosure is included, both in its extension of the bass and its effect on baffle diffraction. Then you can model your crossover values based on these processed graphs. Most would argue the rest should be fine tuned by ear. While I'm not a fan or advocate of this method, I'd be lying if I said I had never done it before. I recently measured the response of a speaker I had designed this way when I was younger, and while not ideal, it was surprisingly good. Choosing crossover values this way isn't far off from shooting darts in the dark.

PeteMcK · 14th August 2008, 10:41 PM

looking at the response of the mid-bass unit, I'd go for something that is smoother at the high end if I had to crossover that high.
Perhaps Wavecor has a 5" or 4" unit?

rhythmdiy · 14th August 2008, 10:51 PM

well what about this crossover config?

rhythmdiy · 14th August 2008, 10:53 PM

The reason why I wanted to go with 6 1/4 inch is that the 10 inch driver mates very well with 6 1/4...

Even Wilson Audio uses 7 inch scanspeak driver with 10 inch woofer...

here with new crossover points Ive reduced the crossover point to 2400Hz at upper and 300Hz at lower which i believe should be pretty good? but pros pls give suggestions...

rhythmdiy · 14th August 2008, 10:55 PM

you can clearly see that how sophia response is..

http://www.stereophile.com/floorloud...19/index6.html

the xover point is arround 2khz... but still it sounds awesome...

PeteMcK · 14th August 2008, 10:56 PM

This unit : http://www.wavecor.com/html/wf118wa01_02.html
would likely give you a smoother response, and is a better match for sensitivity

rhythmdiy · 14th August 2008, 10:58 PM

but what could be the reason Sophias use 7 inch mid-bass unit? for mids...

14th August 2008, 10:26 PM	#2
PeteMcK diyAudio Member Join Date: Feb 2002 Location: Sydney	Did you use the actual (measured) impedance of the drivers at the crossover frequencies you selected when calculating your parts values? __________________ ‘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

14th August 2008, 10:41 PM	#5
PeteMcK diyAudio Member Join Date: Feb 2002 Location: Sydney	looking at the response of the mid-bass unit, I'd go for something that is smoother at the high end if I had to crossover that high. Perhaps Wavecor has a 5" or 4" unit? __________________ ‘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

14th August 2008, 10:56 PM	#9
PeteMcK diyAudio Member Join Date: Feb 2002 Location: Sydney	This unit : http://www.wavecor.com/html/wf118wa01_02.html would likely give you a smoother response, and is a better match for sensitivity __________________ ‘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

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14th August 2008, 10:26 PM	#3
rhythmdiy diyAudio Member Join Date: Dec 2006	how much will be the baffle gain for these drivers so that i can compensate it in the crossover...

14th August 2008, 10:31 PM	#4
pjpoes diyAudio Member Join Date: Jan 2005 Location: New York	Thats completely Dependant on your baffle shape and size. It's far more ideal to measure the response of the drivers and take from there, however, if you can not, then there are ways to "fudge" the rest. You still need the drivers measurement from some source, and then trace the graph. Then you have to process that response so that the effect of the chosen enclosure is included, both in its extension of the bass and its effect on baffle diffraction. Then you can model your crossover values based on these processed graphs. Most would argue the rest should be fine tuned by ear. While I'm not a fan or advocate of this method, I'd be lying if I said I had never done it before. I recently measured the response of a speaker I had designed this way when I was younger, and while not ideal, it was surprisingly good. Choosing crossover values this way isn't far off from shooting darts in the dark.

14th August 2008, 10:53 PM	#7
rhythmdiy diyAudio Member Join Date: Dec 2006	The reason why I wanted to go with 6 1/4 inch is that the 10 inch driver mates very well with 6 1/4... Even Wilson Audio uses 7 inch scanspeak driver with 10 inch woofer... here with new crossover points Ive reduced the crossover point to 2400Hz at upper and 300Hz at lower which i believe should be pretty good? but pros pls give suggestions...

14th August 2008, 10:55 PM	#8
rhythmdiy diyAudio Member Join Date: Dec 2006	you can clearly see that how sophia response is.. http://www.stereophile.com/floorloud...19/index6.html the xover point is arround 2khz... but still it sounds awesome...

14th August 2008, 10:58 PM	#10
rhythmdiy diyAudio Member Join Date: Dec 2006	but what could be the reason Sophias use 7 inch mid-bass unit? for mids...

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