Inductor calculations

[jaudio]

When using a parallel notch filter, do you add the notch filter resistor to the woofer resistance, when calculating the woofer's inductor value?

[Ron E]

No.

The notch filter resistor really only acts at the notch frequency, below the notch, the notch inductor and it's DCR dominate, above the notch, the capacitor dominates.

I doubt the notch inductor DCR will affect crossover inductor calculations much.

The sum of the DCR's of the crossover and notch inductor will raise Qes (and Qts) and require a change in box design, though.

[jaudio]

Thanks for the reply

Sorry I wasnt clear. I was referring to only the resistor in the notch filter and not the dcr on the inductor in the notch filter. I think that resistor would be in series with the woofer, which would add the resistor value (4.6ohm .ei) with the woofer resistance (8 ohm). Now, do I calculate for 12.6 ohm or 8 ohms?

[Ron E]

I understood you quite clearly. The answer is no. The rest of my reply is FYI-perhaps an unwelcome complication....

[jaudio]

Originally posted by Ron E
The rest of my reply is FYI-perhaps an unwelcome complication....

Your FYI was very welcomed. I didn’t understand it at first but I understand a little now. Well, I still don’t quite understand it but I can figure it out since I know the answer is definitely no

Thank you for answering my questions