Capacitor


Dear friends, I am interested in changing my crossover capacitor of 100uf 630VDC they are Auydn Q6 caps but I feel there is room for improvement if I put in better caps can anyone suggest what will be the best cap.
jasbirnandra

Showing 2 responses by erik_squires

If the cap goes to ground, then it’s shunting all the frequencies above that driver’s cutoff to ground, essentially a short circuit,

Man, I no longer have the time and energy to explain the basics, let alone the subtleties of even ordered crossovers. This crap  is why I barely post here.
Hi there,

This really depends.  With a value this high I have to assume it's a low pass filter.  If so it is likely to go to ground. If so these rarely matter as much as caps in series.  They DO matter, but it's hard to really judge their sonic worth as much.  To hear the difference here you might want to try a non-polarized electrolytic before you spend too much money.  Here's one that costs $2.

https://www.parts-express.com/100uF-100V-Non-Polarized-Capacitor-027-360

Try it and see if you feel it's an important capacitor in your circuit.

What value is important the uf or the vdc


The uF determines the frequency of the crossover filter (gross oversimplification) the VDC determines the maximum voltage.  If you apply too much it will short the capacitor and it will no longer work as expected.  That's a very high value for a speaker where I can't imagine ever needing more than 200 VDC rating in extreme high power speakers but with film caps it's hard to make a lower voltage cap sometimes, do don't go looking to optimize this. 

Best,

Erik