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Old 27th September 2008, 22:04   #16
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if a cap is 1/4 the size of a 3.3uf cap (same voltage and type) then the value should be smaller than 3.3uf. Dude I suspect the cap might be 100nf and not uf. In either case the TS20 wont produce much output (which is good).
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Old 28th September 2008, 13:30   #17
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Vig,

If I was you, I would remove the 100mfds and re-install the 3.3mfd BP caps.
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Old 28th September 2008, 15:50   #18
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This is what I got on Car Alarm, Car Stereo, Mobile Video, and Cruise Control Info for Installers

QUOTE
High Pass filters allow high frequencies above a selected crossover frequency to pass, filtering out all frequencies below it. In a first order (6dB per octave) filter, this consist of a capacitor in series with a loudspeaker. Just above the crossover frequency, the capacitor begins to add resistance to the circuit. At the crossover frequency enough resistance has been added to equal the resistance of the loudspeaker and reduce the power by 3 dB or 50 %. One octave below the crossover frequency, power has been reduced by 6 dB or 75%. Each octave lower reduces the power by an additional 6 dB. The size of the capacitor will be determined by the impedance of the loudspeaker(s) and the desired crossover point. The smaller the size or value of a capacitor (microfarads, fd or mfd) is, not physical size, the higher the high pass frequency will be.
UNQUOTE
What should be the capacitance value for a 8 ohm tweeter like the TS-S20 at CUTOFF FREQUENCY 2kHZ?I am sorry to trouble you guys but just want to get my fundas clear.

Last edited by vigsom : 28th September 2008 at 15:52. Reason: to highlight last statement
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Old 3rd October 2008, 13:51   #19
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Quote:
Originally Posted by vigsom View Post
What should be the capacitance value for a 8 ohm tweeter like the TS-S20 at CUTOFF FREQUENCY 2kHZ?I am sorry to trouble you guys but just want to get my fundas clear.
since you got so far go to LaLena.com: Games, DIY Audio / Video, Artificial Intelligence. Play free online java games. Build speaker crossover box - artificial intelligence and use their XO calculator. the TS20 should not be XOed at less than 5kHz at 6db.
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Old 4th October 2008, 06:22   #20
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Quote:
Originally Posted by navin View Post
since you got so far go to LaLena.com: Games, DIY Audio / Video, Artificial Intelligence. Play free online java games. Build speaker crossover box - artificial intelligence and use their XO calculator. the TS20 should not be XOed at less than 5kHz at 6db.
Thank you Navinji.The table answered my question; 3.3microfarad is the approx. C value in this case since the TS20 has a 8 ohm impedance.

Last edited by vigsom : 4th October 2008 at 06:26. Reason: impedance value added
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Old 4th October 2008, 11:24   #21
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Quote:
Originally Posted by vigsom View Post
Thank you Navinji.The table answered my question; 3.3microfarad is the approx. C value in this case since the TS20 has a 8 ohm impedance.
yes and you would also have noticed that 100uf would have given you a XO frequency of about 200 Hz.
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Old 5th October 2008, 20:33   #22
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Quote:
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yes and you would also have noticed that 100uf would have given you a XO frequency of about 200 Hz.
In my case,with two 100 uf in series that would mean effective 50uf and XO freq. approx 400Hz(Gosh !!)

Just one more question-- the capacitors I had earlier put in with these tweeters were 3.3microfarad bipolar ones.Each is about half the size of a AA size battery. But in my Sony Mini Hifi home system tweeters there is this 3.3microfarad capacitor approx the size of a B-complex capsule.What is the difference between these two?

Thanks in advance Navinji.
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Old 5th October 2008, 21:48   #23
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Voltage.

Electrolytics grow bigger as their rated voltage goes higher. Your Sony has low voltage ones (very much sufficient unless you have 1000 RMS or something going into your speakers).
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Old 5th October 2008, 23:27   #24
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Quote:
Originally Posted by vigsom View Post
But in my Sony Mini Hifi home system tweeters there is this 3.3microfarad capacitor approx the size of a B-complex capsule..
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Your Sony has low voltage ones (very much sufficient unless you have 1000 RMS or something going into your speakers).
I dont think a Sony mini hifi can produce 1000W rms. more like 20W rms.
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Old 6th October 2008, 12:39   #25
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Quote:
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I dont think a Sony mini hifi can produce 1000W rms. more like 20W rms.
Yes,Sir 26W RMS per channel.
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