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Old 27th November 2010, 11:27 AM   #1321
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Originally Posted by Tony View Post
At 20HZ, the caps will present an impedance of 0.72 ohms which is 10 times lower than your woofer's impedance.....plus you get that peace of mind that your woofers won't burn out because of dc....
how about at 100 Hz sir?
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Old 27th November 2010, 11:35 AM   #1322
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how about at 100 Hz sir?
my bad.. i forgot that capacitors have lower reactance as frequency increases..
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Old 27th November 2010, 09:54 PM   #1323
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@volmax audio

try using a 2uF/250V cap in series with a 3-6ohm 20W-30W resistor, you can experiment with the value of the resistor to balance the output of the compression to that of the woofer. Thou it will shift the crossover frequency a bit, try to set your electronic xover frequency a bit higher (i.e. 5Khz)
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Old 27th November 2010, 09:55 PM   #1324
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@eirol

this how to add the supports to lessen the flex of the construction ply.

magandang araw,
jojo
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Old 27th November 2010, 10:14 PM   #1325
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Originally Posted by eirol_99 View Post
wow.. wish i have a system as powerful as that sir,, lumulundag ang box
I don't want to sound bad, but that's a sign of a poor baffle construction, A well made box box stands firm and solid even at an ungodly output, Ibig sabihin hindi lumalapat ang 4 corner ng box sa ground. Just my two cents.
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Old 27th November 2010, 10:24 PM   #1326
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Originally Posted by audiomachines View Post
I don't want to sound bad, but that's a sign of a poor baffle construction, A well made box box stands firm and solid even at an ungodly output, Ibig sabihin hindi lumalapat ang 4 corner ng box sa ground. Just my two cents.
Click the image to open in full size.
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Old 28th November 2010, 12:57 AM   #1327
AJT is offline AJT  Philippines
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Quote:
Originally Posted by eirol_99 View Post
my bad.. i forgot that capacitors have lower reactance as frequency increases..
that's right......i chose 20hz as an example since most music will never go that low anyway....the 20hz response is required to avoid phase shifts at frequencies higher than 20hz....

in case you are not aware, early ss amps used capacitors to couple the speakers to the amp, one such example is the Dynaco 120, considered a classic by some.....
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Old 29th November 2010, 01:31 AM   #1328
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@eirol

this how to add the supports to lessen the flex of the construction ply.

magandang araw,
jojo
thanks sir jojo
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Old 29th November 2010, 07:00 AM   #1329
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@volmax audio

try using a 2uF/250V cap in series with a 3-6ohm 20W-30W resistor, you can experiment with the value of the resistor to balance the output of the compression to that of the woofer. Thou it will shift the crossover frequency a bit, try to set your electronic xover frequency a bit higher (i.e. 5Khz)
great! really works. . . but a little bit more thicker, i think this would make by using the driver with 3" voice coil. would you recommend some options/kinds of driver sir for me to buy which is not too expensive yet relliable? thanks a lot..
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Old 29th November 2010, 10:51 AM   #1330
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great! really works. . . but a little bit more thicker, i think this would make by using the driver with 3" voice coil. would you recommend some options/kinds of driver sir for me to buy which is not too expensive yet relliable? thanks a lot..
Konzert TDU500 would be nice it will fit in your budget, the diaphragms of your current compression driver must be made of phenolic since your complain it sound "thick" lacking that high end extension unlike those made of titanium
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