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Old 9th October 2003, 01:47 PM   #11
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You guys are right on the money, you have opened up my mind regarding the issue of speaker wattage. Ok, I'll forget that and look for the sensitivity of the drivers. I was invited to a showroom of a local speaker manufacturer and I'll be there on friday, at least now, I know what to look for and have the ability to listen to every part (woofer, midrange, tweeter) before I buy.

If you do have other words of wisdom, do's and dont's, I'll check up before I leave.

Best regards,
JojoD
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Old 9th October 2003, 03:26 PM   #12
Bob2 is offline Bob2  Canada
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JoJo

Rod Elliot describes matching speaker levels on his site.

http://sound.westhost.com/index.html

Check out the article on Bi-amping.

http://sound.westhost.com/bi-amp.htm

Bob2
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Old 9th October 2003, 05:54 PM   #13
gary f is offline gary f  Canada
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A good article on power handling. Must read

http://sound.westhost.com/tweeters.htm

F
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Old 10th October 2003, 06:49 AM   #14
navin is offline navin  India
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Quote:
Originally posted by planet10

Good point... so the woofer should be the least efficient after you factor in BSC... since i'm mostly building bi-poles now i often forget about BS.
dave
given that BSC is 6db there are few cases where the woofer is not less efficient than woofers. yes woofers should be less efficient after BSC because padding a woofer could serverly affect the bass response of the woofer.

BTW with bipoles do you only bipole the woofer or the tweeter as well.

i am going from my memory (this is from the late 60s early 70s i think i did more speaker building from 72-78 than i do now)...the way music spectrum is broken is as follows:

about 50% below 300hz
about 75% below 2500Hz
about 95% below 10k

I think then AR came out with the 2x, 2ax, 3x series they based the power handling of their drivers based on the above. These speakers used a large woofer in a sealed box.

A decade or so later the DQ10 was also similary designed.

todays music (electronic) has a lot more energy at the freq extremes so these % will change a bit) I used western classical music as my bench mark (read as Bach, Chopin, Liszt, Smethana, Beethoven, W.A Mozart etc...)

boy, now I have gone and dated myself :-)
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Old 10th October 2003, 07:22 AM   #15
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Quote:
Originally posted by navin
BTW with bipoles do you only bipole the woofer or the tweeter as well.
Depends what you are trying to achieve... i'm usually doing it with full ranges, with an optional super tweeter firing forward.

dave
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