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Thanks for clearing this up!

My next faux pas involves discovering a huge inductor in my bass cabs. I've been collecting 2226J's to populate them, and I finally have 4 of them. Today I took out...

The map portion of that graph is labeled.
(RED) -6dB tap, MAX HF
(GRN) -8dB tap, MAX HF
(BLU) -6dB tap, MED HF

Interesting that the different attenuation taps don't affect the 20KHz level on...

There is graph here:

http://www.audioheritage.org/vbulletin/showthread.php?5376

Thanks!

I don't have any way to measure anything but the levels right now, so having a definitive answer would be great.:bouncy:

That's easy if you just build one with a standard (non-tapped) 3.3mH inductor. I just measured mine set to 0dB, i.e. all the taps floating open and the signal drawn from the top of the 3.3 mH...

Decided to try the coil again, this time with 8 taps. I tried to start at -10 dB, but ran across a measurement error at that tap. (I left the wire I unwound on the floor and measured from the unwound...

I'm not seeing the values you got.

From the chart, -6dB is supposed to be 25.1% of the original inductance or 0.8283mH. That would certainly be closer to half the wire than what I made, there's...

Just happened to have the right coil close at hand, and as I said, it was ordered by mistake, so I only have the one. And I just realized my 2385's have 2446H's on them, so I will need to swap them...

I'd rather start with this one:

http://www.erseaudio.com/Products/IQCoils18Gauge/ELC54-18-2500

and add wire to get to the specified inductance for each tap. If you are going to unwind and then...

Did you slip a decimal there? 0.0512 suggests one half? I think the 16 ga coil is probably overkill for the HF driver, I had a 2.5mH 18ga on hand. I had ordered it by mistake (PE 266-556) and added...