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In the Forum: Audio Discussions
In the Thread: First Order on Bass channels: Designed for Sound
Post Subject: 1.5 order low passesPosted by stuck.wilson on: 7/21/2007
what a great idea-- i never really thought of a sort of 'low pass bypass' inductor of sorts?! i'd always assumed that inductance was similar to capacitance in that regard-- the more you add, the more you get-- but hadn't thought about the potential for chaining them concurrently as a positive attribute. it takes a lot of time experimenting to put it all together...
would you still end up with the net result of a second order (90 degrees) if you chain inductors? that seems to follow what you're saying-- as you're basically 'delaying' twice. hmm.. if that's the case-- that's a really interesting proposition. two chained iron cores could still yield a lower DCR than an air core of similar size (although with different results), and the extra level of control could be really helpful. PLUS having the same net phase shift.. i can keep the wife, cats, and the horns... i like it... i'll have to look into that! with a first order crossover around 1100hz-- the DCR might be naturally lower than it would be with the crossover of a larger inductance second order filter anyway..
i ALMOST went the same route as you with the big custom wound inductors-- especially running a modestly powered system with passives and trying to keep a 99db bass bin even close to a 118db compression driver-- but the outrageous expense of copper nowadays definitely sent me the direction of steel cores... i even looked into spinning them myself-- but still the cost of high grade magnet wire of gauges like that is pricy! and for the low price of the erse or sledgehammers.. that was a myth i just had to try busting for myself... it seems a lot more like an 'economic' bias than a sonic one from the sounds of it here!
excellent! thanks for that!
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