BillyRyan Posted September 17, 2002 Share Posted September 17, 2002 Does anyone have any input on 8 to 10 ga coils in crossovers? I've noticed the heavy coils available from Northcreek and was wondering if any design changes would be necessary for a given value due to the lower DC resistance that the larger coil would have? I've noticed that Al K. places much importance on the coils. Al, any thoughts? Thanks! ------------------ 2 channel: 1989 Klipschorns AES AE-3 DJH tube preamp AES SE-1 SIG SET tube amp Denon CDP Pair North Creek 18" subs Mackie 1400i power amp HTS: Vidikron Kronos CRT Faroudja 2200 Scaler Denon 5800 receiver Denon DVD RCA DTC100 HD receiver Sonance in wall Velodyne HGS10 sub This message has been edited by BillyRyan on 09-19-2002 at 11:28 AM Quote Link to comment Share on other sites More sharing options...
Malcolm Posted September 17, 2002 Share Posted September 17, 2002 An ideal inductor would have 0 resistance. Unfortunately, real world inductors have resistance. The larger gauge wire they are wound from, the lower resistance. So, in general, an inductor of a given value wound from larger gauge wire is better than a inductor of the same value wound from smaller gauge wire. The factor of merit for inductors is the Q factor. It is inversely proportional to resistance. The higher the resistance, the lower the Q. However, crossover designers generally take the resistance of the inductor they choose into consideration in the design of the circuit. And sometimes resistance is a necessary part of the circuit. Simply changing the resistance of an inductor is going to change the sound of the speaker system. Whether it is a good change or not depends on what it does in the circuit. It may or may not be enough to be noticeable. Quote Link to comment Share on other sites More sharing options...
Dflip Posted September 17, 2002 Share Posted September 17, 2002 Al recommends 12 gauge solid wire for the larger inductor, eg. 2.4 mHy for the woofer. That is, if you can afford it, if not 14 awg can be used. He uses Litz wire inductors for the smaller values as they improve the sound. I guess you can always overbuild the network. Quote Link to comment Share on other sites More sharing options...
Al Klappenberger Posted September 17, 2002 Share Posted September 17, 2002 BillyRyan, I agree with the comments made earlier. With my network, the heavier the wire the better. Don't put heavy solid in place of Litz though. By the way, I have tested North Creek's 2.4 mHy inductor. It's ok, but wound slopy. They consider that some kind of advantage. I don't! Just don't pay extra for it! Al K. Quote Link to comment Share on other sites More sharing options...
BillyRyan Posted September 18, 2002 Author Share Posted September 18, 2002 Thanks, Gentlemen. I appreciate the feedback. Bill. ------------------ 2 channel: 1989 Klipschorns AES AE-3 DJH tube preamp AES SE-1 SIG SET tube amp Denon CDP Pair North Creek 18" subs Mackie 1400i power amp HTS: Vidikron Kronos CRT Faroudja 2200 Scaler Denon 5800 receiver RCA DTC100 HD receiver Sonance in wall Velodyne sub This message has been edited by BillyRyan on 09-18-2002 at 08:45 AM Quote Link to comment Share on other sites More sharing options...
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