“impedance trap”
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Hi,
Thanks for reading my post. I signed up when I couldn’t find an answer online.
Does anyone here know how to “do” an impedance trap for a speaker?
Nothing on YouTube about how to do it, and only a vague reference on the klipsch forums came up when I searched Google.
I first heard about it a few weeks ago while exchanging emails with Hobbs at GR Research. I asked him what Danny did to fix the impedance in some crossover that looked really bad.
This is what he said:
“Sure, he used what’s called an impedance trap, which is essentially a notch filter used before the crossover that ties the positive and negative inputs together at a specific frequency, and is used to reduce impedance load and phase shift seen by the amplifier, without affecting the measured response of the speaker.
We don’t use them often, but they come in handy when there’s a large impedance rise that needs to be addressed.”
I wonder if I can do this in Xsim, which I have not started using yet, although I have purchased Dats and the Dayton Audio calibrated-mic.
Thanks in advance!
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A great reservoir of information may be found at Elliot Sound Products, or ESP for short. He’s an Australian electronics engineer that has spent considerable time putting all kinds of info up for free. I will send you to 2 pages that will help immensely.
The first is a general page about impedance – https://sound-au.com/impedance.htm – how all the different impedances throughout the system affect each other.
The second is a bit more pointed to your question – https://sound-au.com/articles/z-compensation.htm Here, you should find the answer you seek.
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Thank you!
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