Power sharing in 3-ways

Andy G · 29th November 2003, 12:56 AM

... people often ask about this....so....

a book I have on PA speakers gives a short table of very approximate values of power above certain frequencies.

What I did was to try to fit those values to a frequency v percent curve (was NOT easy) the result was then turned into a very simple spreadsheet. (Excel 2000)

This spreadsheet is available for download from the first page of my web site.

I stress, it ONLY give a very rough estimate , and only for NORMAL music, but maybe some will find it useful anyway !!!

http://users.tpg.com.au/users/gradds/

ps: for 2-way, just entre the same frequency twice

cadmaniac · 29th November 2003, 01:26 AM

Oh, man...another nifty utility obstructed by Excel-dependence! (I mean: Thanks for the effort.)

Does your data coincide with this chart, found on Rod Elliot's ESP site? http://www.sound.westhost.com/lrp-f71.gif

Andy G · 29th November 2003, 04:36 AM

within a couple of percent or some !!

cadmaniac · 29th November 2003, 10:52 PM

Thanks, Andy

I had to hunt all over for this info, even though it seems to be a very important design consideration (especially since I became a full-fledged multi-amp lunatic).

Steve

29th November 2003, 12:56 AM	#1
Andy G diyAudio Member Join Date: Apr 2002 Location: Newcastle, Australia	Power sharing in 3-ways ... people often ask about this....so.... a book I have on PA speakers gives a short table of very approximate values of power above certain frequencies. What I did was to try to fit those values to a frequency v percent curve (was NOT easy) the result was then turned into a very simple spreadsheet. (Excel 2000) This spreadsheet is available for download from the first page of my web site. I stress, it ONLY give a very rough estimate , and only for NORMAL music, but maybe some will find it useful anyway !!! http://users.tpg.com.au/users/gradds/ ps: for 2-way, just entre the same frequency twice

29th November 2003, 04:36 AM	#3
Andy G diyAudio Member Join Date: Apr 2002 Location: Newcastle, Australia	yep, close enough anyway within a couple of percent or some !!

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29th November 2003, 01:26 AM	#2
cadmaniac diyAudio Member Join Date: Nov 2003 Location: Boston, MA	Oh, man...another nifty utility obstructed by Excel-dependence! (I mean: Thanks for the effort.) Does your data coincide with this chart, found on Rod Elliot's ESP site? http://www.sound.westhost.com/lrp-f71.gif

29th November 2003, 10:52 PM	#4
cadmaniac diyAudio Member Join Date: Nov 2003 Location: Boston, MA	Thanks, Andy I had to hunt all over for this info, even though it seems to be a very important design consideration (especially since I became a full-fledged multi-amp lunatic). Steve