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Crossover Capacitor In Parallel with Woofer

I successfully recapped my Altec Lansing Bolero 890C speakers and they sound amazing.  This has helped me understand how crossovers work but there is a section in it that is still strange to me.  It looks like there is a 6uf cap and a 5 ohm resistor in parallel with the woofer.  Is this making it a 2nd order (12db) crossover point?  Can anyone explain exactly how that cap is working on the low end or is it just effecting the slope of the the frequencies being crossed over? Thank you in advance.

dannybad

Showing 1 response by audiokinesis

audiokinesis
2,763 posts
 
Sometimes what works is a second-order lowpass filter with a lower-than-normal L/C ratio and a resistor in series with the capacitor on the shunt leg. This is a damping resistor which prevents response peaking and its accompanying impedance dip. This would be called a "damped second order lowpass filter", and it can look a lot like a first order + Zobel.

Duke
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