I find it's sometimes worthwhile to replace the tweeter L pad attenuation with a simple series resistor and resize the other components in the tweeter section to compensate. Result, a smaller capacitor which can be of better quality. Just a suggestion.
How much could be the difference between a
Jantzen Audio - 33.00uF 100VDC Electrolytic Non-Polarized Capacitor
&
Dayton Audio DMPC-33 33uF 250V Polypropylene Capacitor
Which one should be good for crossover use?
Jantzen Audio - 33.00uF 100VDC Electrolytic Non-Polarized Capacitor
&
Dayton Audio DMPC-33 33uF 250V Polypropylene Capacitor
Which one should be good for crossover use?
Tolerances are tighter with polypropylene, life span better too, but I wouldn't rule out electrolytic in the low pass section. I'd never use it in the HP section though.
what if we choose two different frequencies. for example for bass 2500hz, and for tweeter 5800hz. where in that case will the point of intersection be and what will the amplitude look like?
Thank you
Thank you
The halfway point would be 3800Hz, but this would only be half way between two similar filters. There will be some variations due to the drivers not being equal to begin with.
The result will probably be a dip in the response, unless you are using shallow filters. Also the polarity of the tweeter which you choose might not be the same as if you were using closer rolloffs.
The result will probably be a dip in the response, unless you are using shallow filters. Also the polarity of the tweeter which you choose might not be the same as if you were using closer rolloffs.
When you filter, it changes the timing within the wave. It is necessary to make sure both drivers are working together.
So from the graph which i posted earlier, is both drivers are in phase? Also when i revert the polarity of both drivers the phase dots comes down
I have implemented this crossover and satisfying initial results. Only thing bothering is the cone movement due to inverse polarity it going in, does it affect the performance or low notes power?
Inverse polarity has no effect on the amount of cone movement. In a vented design the tuning frequency of the port does though.
You will need to describe the ringing in more detail I think.
If the inverted polarity cone movement bothers you, simply reverse the connections to both drivers.
If the inverted polarity cone movement bothers you, simply reverse the connections to both drivers.
Ringing in sense somewhat metallic kind of sound bit harsh
I am ok with the reverse polarity its giving me very good low ends
I am ok with the reverse polarity its giving me very good low ends
The first thing to try is to reduce the tweeter level slightly by adjusting the resistor values.
Yes I did that and now the tweeter is almost 80db and still the ring is evident more in instruments like guitar etc let me keep it running for some time may be the burn in of drivers and crossover components
Also i am used only silk dome till date and this is fabric dome so i may also need burn in 🙂
Also i am used only silk dome till date and this is fabric dome so i may also need burn in 🙂