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Old 9th April 2007, 02:19 AM   #11
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ok so ill cross a tweeter over but its amazingly expensive to make a low pass x over around 5 kHz ( which is where the 12 inchers roll off ) that can handle 1200 + watts @ 4 ohms, even 2kHz is alot of mula
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Old 9th April 2007, 02:31 AM   #12
Tenson is offline Tenson  United Kingdom
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Well you want a high-pass for the tweeter for sure! If you just roll the tweeter in where the bass drivers naturally roll-off all you need is a high voltage capacitor. You are probably looking at about £10 a cap.
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Old 9th April 2007, 03:50 AM   #13
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oh really where can i get one of these high voltage caps?
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Old 9th April 2007, 04:36 AM   #14
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Parts express and madisound are the usual places.
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Old 10th April 2007, 12:31 AM   #15
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ok now how would i wire this in without reeking havok on the woofer wiring?
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Old 10th April 2007, 01:00 AM   #16
Tenson is offline Tenson  United Kingdom
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If you don't know - you should not be doing it. You have been given links to read and if you don't understand them then you should probably go read some more basic physics text books and study the electronics parts. I have to guess at this point you are someone’s idea of a wind-up.

Never-the-less, here is how you wire a capacitor as a high-pass filter (high-pass = high frequencies pass).

The value of the capacitor (in micro farads or 'uF' usually) will need to be determined from the impedance plot of the tweeter and the frequency you want the filter to work at.

Click the image to open in full size.
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Old 10th April 2007, 10:26 AM   #17
sreten is offline sreten  United Kingdom
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Quote:
Originally posted by punkrokr1701
.........its amazingly expensive to make a low pass x over
around 5 kHz.......that can handle 1200 + watts @ 4 ohms .........
Hmmm........

I'm not going to go there......
Fairly obvious your grasp of engineering is still very minimal.
I presume you mean a high pass and simply the above is wrong.

/sreten.
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Old 14th April 2007, 06:05 PM   #18
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yeh i meant high pass and i know this stuff like the back of my hand i dont whats been goin on lately, i just havent been in the loop at all with all the stuff ive been doing as far as school goes, lol damn I knew that well thanx for the refreshment guys, lol
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Old 14th April 2007, 09:21 PM   #19
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You should probably build a few more cheap kit speakers before embarking on something as risky as a high-powered and costly bass rig.

Mixing it up when you're typing is one thing, but mixing it up with the soldering iron is something very different. I know first hand- last weekend I blew up a couple of components because I got the polarity wrong. It was loud and smoky, and kind of embarrassing. I'm glad to say that the total value of the smoked components was less than a dollar- but it was a lesson learned nonetheless. Next time I'll be a little more careful to label things properly and verify everything before powering things up. I won't be doing it because somebody told me to, I'll be doing it because I remember what it felt like to experience the noise and smoke and know that it was because I did something stupid.
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Old 15th April 2007, 10:47 AM   #20
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Yeah, Joe,
Like those car speakers that I placed on my ears, a couple of (many) years ago,... and first thing I remember to do... after,... yes they where connected to 220 AC... but that was not the soldering iron, Hups!
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