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Old 10th April 2003, 03:20 AM   #11
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Join Date: Dec 2001
Location: SIUE, Illinois, USA
hmm. i'll have to ask around school about this one. i've already placed my orders and don't want to place any more. and i think the caps to protect the tweeters are more expensive then the tweeters themselves! (which were choosen mainly for the low Fs to match a 6.5" mid-woofer)
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Old 11th April 2003, 01:52 AM   #12
Diode is offline Diode  United States
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Location: Oklahoma USA
Sorry guys,

I didn't know what kind of system you were building. I guess I'm accustomed to seeing 40-70.00 horn tweeters blow so a 6.00 capacitor is nothing. I really don't know how much JBL gets for the horn diaphrams but I'll bet our cost (shop) is over 100.00. For my personal home tweeters, I bought Seas Excel tweeters, on sale, for 65.00 so again, a 6.00 capacitor doesn't cost much to protect the investment. Again, sorry, I didn't know what kind of parts you are using. MCM also sells a "tweeter protector" I think it is just a MOV that acts like a very small resistor until its rating is exceeded and then goes very high in resistance as to attenuate power levels that exceed its power rating. I don't know how well they work but I installed them into a set of PA speakers and had no troubles with them. I don't know how they will handle DC though. I'd assume they will burn up.

Well, good luck with your project!

Chris
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Old 11th April 2003, 02:47 AM   #13
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yeah, next semester there's going to be 3 computers (all of which could almost be classified as servers in terms of noise...) 2 refrigerators, and to make things even better, the lights buzz... oh and of course the AC/heating. there's only so much precision that can be had in such an enviroment!
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Old 11th April 2003, 06:58 AM   #14
Ford_V6 is offline Ford_V6  Romania
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thecris please describe me exactly how can i lower my ps to get +/- 35v instead of +/- 38v
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Old 11th April 2003, 06:41 PM   #15
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http://sound.westhost.com/project15.htm

"The only real thing to worry about is the degree of filtering needed! We must assume that at least 3 Volts will be lost across the capacitance-multiplier filter, to ensure that the DC input (including ripple component) always exceeds the output voltage. "
-this is the line i noticed.

or could you just get a lot of diodes?
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Old 11th April 2003, 06:54 PM   #16
Ford_V6 is offline Ford_V6  Romania
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Thanks for help
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