Professor.Ham.Slap Posted May 27, 2003 Share Posted May 27, 2003 I researched all of the past articles in the forum on this, and I've decided to order two inductors for the woofer circuit of my cornwalls. I know to get the 2.5 inductors but my question is, does the resistance matter? There are several air core inductors at Parts Express that have that rating, but they're all different resistors. Does it matter what I pick or will the slightly higher resistance affect the sound? TIA. Quote Link to comment Share on other sites More sharing options...
JohnA Posted May 27, 2003 Share Posted May 27, 2003 The resistance matters, but there is a point of diminishing returns. I'd look at 14 or 12 ga. Quote Link to comment Share on other sites More sharing options...
Dflip Posted May 30, 2003 Share Posted May 30, 2003 When I asked ALK for his advice, he recommended going with the thickest wire you could afford, 12 gauge. Since it is used for the woofer, you can use solid wire inductors, Solen make them. You do not need to use the Litz wire, it is not necessary in this case. Solen 12 awg, 2.4 mHy, $36.90, 14 awg. $23.40 at http://www.partsConneXion.com/catalog/inductors.html As you can see there is a $13.50 US difference between the 2 gauges x 2 for both inductors. Quote Link to comment Share on other sites More sharing options...
johnellis Posted May 30, 2003 Share Posted May 30, 2003 The Solen inductors are great. No doubt about it. But, if you can afford it, I would definately go lower than 12 or 14 gauge. Go 8 guage if you can. it definately makes a difference. The 2.5mh 8 gauge inductors can be purchased from www.northcreekmusic.com for, last time I checked, "approximately" $121.00 each. And yes, they do sound wonderful!!! OR, you could make your own!!! Here is the calculating link.... www.lalena.com/audio/calculator/inductor/ You'll definately want to use magnet wire when winding your own. This is the same type of wire they use to wind electric motors. When winding, wrap it as tight as you can around anothor cylinder. From the factory cylinder to your cylinder that is. After the coil has been wound, wire tie it together or use a hot glue gun. But, before you permanently secure it, check it with a meter. If need be, add or remove turns in order to reach 2.5mh. Be sure to remove the cylinder that you wrapped the wire around. If you don't, this may case problems as far as the inductance is concerned. Once the coil has been wound and secured with wire ties, dip it in Glyptol. Which is a wire varnish. This will stabilize your new coil. Anyway, the wire is cheap. And, it's not that difficult to do. Toss in a few Hovland music caps and you'll have one set of KILLER crossovers!!!! Quote Link to comment Share on other sites More sharing options...
johnellis Posted May 30, 2003 Share Posted May 30, 2003 P.S I almost forgot, not only will you need the correct mh, which, for a Cornawll is 2.5, but, you will also need the coil diameter in order to calculate the appropriate length of wire to wind. If I'm not mistaken, it's around 283 feet. But, I'm not exactly sure. I can't remember. If you're interested, shoot me an email and I'll give you the exact diameter of my 8 guage coils. From there it will be a piece of cake!! Quote Link to comment Share on other sites More sharing options...
Malcolm Posted May 31, 2003 Share Posted May 31, 2003 Just be aware that by changing the resistance of the inductor, you are changing the volume of the woofer relative to the squawker and tweeter. If you want to keep the same frequency response you started with, keep the resistance the same as the stock inductor. You may or may not hear the difference, though. Quote Link to comment Share on other sites More sharing options...
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