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Planar Speaker Asylum Welcome! Need support, you got it. Or share your ideas and experiences. |
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In Reply to: Re: the picture posted by Davey on April 28, 2002 at 18:44:15:
Otherwise, the inductance would be halved just like the resistance. That was the point. I was playing around with this idea ever since I heard of North Creek inductors. I've built speakers with Goertz coils for nearly a decade & now well how foil inductors are required for a clean midrange. However, I suspected that these coils were a big large for a mere 12ga. Then, my suspicions were confirmed by online DIY inductor calculators which speak of over 150' of foil wire. began thinking of it like what gauge of wire would I use for 75' of speaker cables. Suddenly, I realized why the bass is robust with North Creek coils. It's no longer stifled by all this resistance isolating the woofer panel from the amp's damping factor. At an effective 75' of speaker cable, shotgunning twin 12ga wires to create an effective 9AWG is the sane choice.However, this required testing. I originally contacted s.hum because he wasn’t interested in bi-amplification & he used wirenuts instead of solder. Thus, I suggested he simply try both coils on one speaker & run monaurally to test my theory w/o investing anything but time & effort. Then, after hearing my reasoning he jumped at the opportunity & ordered a 2nd pair to which I sort of felt guilty. So, I am relieved that it worked as planned.
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Follow Ups
- it is the mutual inductance that's responsible for keeping the inductance - Mart 19:41:15 04/28/02 (19)
- Re: it is the mutual inductance that's responsible for keeping the inductance - Davey 20:45:25 04/28/02 (18)
- granted but ... - Mart 00:50:20 04/29/02 (17)
- Re: granted but ... - Davey 06:54:04 04/29/02 (16)
- how tightly were they bound? - Mart 07:13:55 04/29/02 (15)
- Re: how tightly were they bound? - s.hum 10:16:07 04/29/02 (2)
- after contemplation - Mart 16:56:32 04/29/02 (1)
- Re: after contemplation - s.hum 17:51:49 04/29/02 (0)
- Re: how tightly were they bound? - Davey 09:36:14 04/29/02 (11)
- just did a model - Mart 01:15:25 04/30/02 (8)
- Re: just did a model - Davey 06:37:38 04/30/02 (7)
- IME still not nearly as audible as Q - Mart 07:40:52 04/30/02 (6)
- Re: IME still not nearly as audible as Q - s.hum 08:56:32 04/30/02 (5)
- Re: IME still not nearly as audible as Q - Mart 10:54:34 04/30/02 (4)
- Either or then? - s.hum 11:33:53 04/30/02 (3)
- Re: Either or then? - Mart 11:55:44 04/30/02 (2)
- Re: Either or then? - s.hum 13:33:11 04/30/02 (1)
- "is this a good thing?" - Mart 16:07:22 04/30/02 (0)
- so, yours weren't bound at all? - Mart 11:53:51 04/29/02 (0)
- re: capacitance - Mart 11:03:16 04/29/02 (0)
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