Deang Posted May 17, 2014 Share Posted May 17, 2014 Great thread. I really enjoyed seeing that I haven't changed my mind much about things in the last ten years. Quote Link to comment Share on other sites More sharing options...
minermark Posted May 17, 2014 Share Posted May 17, 2014 Good stuff, sometimes my brain needs to be "Refreshed", this worked well. over the years it seems iv "Spaced" a few facts, very helpful. Quote Link to comment Share on other sites More sharing options...
Schu Posted May 17, 2014 Share Posted May 17, 2014 Quote Link to comment Share on other sites More sharing options...
mustang guy Posted May 17, 2014 Share Posted May 17, 2014 I watched a youtube video a couple weeks ago about this. I'm going to see if I can find it and post it here. Quote Link to comment Share on other sites More sharing options...
mustang guy Posted May 17, 2014 Share Posted May 17, 2014 Found it: Quote Link to comment Share on other sites More sharing options...
cradeldorf Posted May 17, 2014 Share Posted May 17, 2014 Found it: Every three minutes I had to stop the video and go pee. Quote Link to comment Share on other sites More sharing options...
BFC Posted November 8, 2019 Share Posted November 8, 2019 Hi, In response to the audible difference between air core and steel laminate inductors, I have replaced a 16 gauge 3.9 mh steel laminate 0.20 dcr inductor with a 9 gauge Intertechnik air core inductor of identical 3.9 mh and 0.20 ohm dcr on the low pass over of a 12" woofer. The sonic difference is quite substantial even at 1/4 watt listening level, there is a lot more going on happening than dcr or hysteresis to pass a musical signal from point a to point b. The air core sounds more natural on voices, (300 Hz cutoff ) with meatier bass impacts faster, richer and cleaner sound all round. I reckon that the curent capability of a coil is important. The smaller gauge conductor in the steel inductor is a current choke even with a low dcr. Im configuration, with the 3 ohm impedance at around 225 hz of my speakers , the steel inductor with a 240 watt power rating in 8 ohm gives a current rating of only 5.48 amps which translate into 90 watts for a 3 ohm load. The air core with a 1180 watt power rating into 8 ohm gives a current rating of over 12 amps or 440 watts into 3 ohm. Sure there is more length of wire in the air core, but when the gauge is thick enough to equate the dcr of the steel inductor, the ability for the air core to pass current and the musical signal is in a different league. Music flows in that air core whereas it feels restricted, squeezed and compressed in the steel core even at very low listening levels. My conclusion is very similar to what North creek audio found out years ago. Quote Link to comment Share on other sites More sharing options...
Deang Posted November 8, 2019 Share Posted November 8, 2019 Diminishing returns. I stopped using them because I couldn't find anyone willing to pay for them anymore. 9/10 AWG is not cheap. But yeah, I hear it too -- placebo, right? 1 Quote Link to comment Share on other sites More sharing options...
BFC Posted November 8, 2019 Share Posted November 8, 2019 One placebo after another, after another, after another, and then it is a different world and why wouldn't it be when you know that being aware of anything depends entirely on electrical impulses and chemical charges firing from our synapses. This suggests that what we perceive of the outside world is only happening in our insides. Placebo or nocebo world for each of us depending on our choices right? Quote Link to comment Share on other sites More sharing options...
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