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Post by miiksu on May 24, 2020 7:31:47 GMT
Hi Frans! Do u have already a filter cable that suits for this headphone? Low shelf filter 1000 Hz, -8 dB, quality 6. Something like this:
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solderdude
Administrator
measureutternutter
Posts: 4,882
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Post by solderdude on May 24, 2020 10:02:15 GMT
One could create this kind of filter for specific headphones with known flat impedances in the lower frequency range when the impedance is known.
Such a filter would be hard to make in this case because at least the impedance has to be known. This basic info I was not able to find anywhere.
On top of that a shelve this way means the lower frequencies will probably not be flat because of the dynamic driver's impedance plot is unknown.
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Post by miiksu on May 24, 2020 10:18:37 GMT
Oh, sorry! HP driver impedance is 32 ohm but measures something like 33-34 ohm with the cable and it has volume knob it increaases the headphone resistance.
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solderdude
Administrator
measureutternutter
Posts: 4,882
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Post by solderdude on May 25, 2020 5:29:34 GMT
Oh, sorry! HP driver impedance is 32 ohm but measures something like 33-34 ohm with the cable and it has volume knob it increaases the headphone resistance. In that case any filter circuit will change its effectiveness with volume setting. Either it always has to be used on max. volume setting or you would have to drive it from a speaker amp (needs a special filter in that case)
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Post by miiksu on May 25, 2020 18:15:28 GMT
Oh, sorry! HP driver impedance is 32 ohm but measures something like 33-34 ohm with the cable and it has volume knob it increaases the headphone resistance. In that case any filter circuit will change its effectiveness with volume setting. Either it always has to be used on max. volume setting or you would have to drive it from a speaker amp (needs a special filter in that case) Yup. I would keep it max volume so the impedance could be close to 32 ohm atleast on PC.
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