I was having a hard time finding the 16 ga. high power inductor coil I was certain I needed.
Found http://www.chokes.com
The good news: They wind the coils to order, so you can get precisely what you want.
The bad news (for right now, anyway): They wind the coils to order, so they charge per the current (a joke, but not really) price of copper. As the price of copper seems to double every 12.5 seconds, that's not cheap.
But Verne, who answered my emails, seems like a good guy.
Tom O'Shea
coil supplier
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Sydney
Tom - Have you tried:
http://www.northcreekmusic.com/COILS.html
They have a large variety of inductor values/gauges down to 10/8 w custom made to request.
But they may be going out of biz soon.
Also
http://www.gr-research.com/components/f ... _16ga.shtm
Your right about the price of copper - the prices on 8 & 10 gauge is painful
http://www.northcreekmusic.com/COILS.html
They have a large variety of inductor values/gauges down to 10/8 w custom made to request.
But they may be going out of biz soon.
Also
http://www.gr-research.com/components/f ... _16ga.shtm
Your right about the price of copper - the prices on 8 & 10 gauge is painful
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Bill Fitzmaurice
- Site Admin
- Posts: 28916
- Joined: Tue May 02, 2006 5:59 pm
Re: coil supplier
What are the benefits of using ribbon inductors vs. standard wire wound? Would there be an audible difference, preferably an improvement? One of the sites above says one, the other says the opposite. Of course each site sells that kind.
2 DR250s, 2 27" Lab15 T-60s, 2 30" Neo Titan 39s, 1 Autotuba...and looking for more!
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Bill Fitzmaurice
- Site Admin
- Posts: 28916
- Joined: Tue May 02, 2006 5:59 pm
Re: coil supplier
Probably the same as using $50 versus $5 caps, which is to say, none.Rich4349 wrote:What are the benefits of using ribbon inductors vs. standard wire wound?
Re: coil supplier
What about the ad copy for standard (albeit of the exotic, boutique, US made) wire coils- also a bunch of techno-babble??
"...our wire wound inductors are made on a custom built, tension-free winding machine. This winding method minimizes the stretch and mechanical deformation of the copper, so there is no strain on the copper and its conductivity remains at a maximum. All copper foil inductors (and most copper wire inductors) are wound at very high tensions, so both the copper and the insulating film are stretched and remain under tension for the life of the product. Tension is differential stretch, which creates microfractures in both the copper and insulating material. This is about the worst thing one can do to a conductor.
The second factor is mechanical stability: North Creek inductors are varnish sealed in a vacuum chamber, which bonds each winding to the six surrounding it throughout the entire body of the coil. Most copper wire inductors are varnish dipped, which seals the outer wraps but not the coil body. Copper foil inductors are usually heat sealed, which seals the edges but not the body. Typical copper wire and copper foil inductors will have a number of mechanical resonances that are activated by current flowing through the inductor, and can be heard to "sing along" with the input signal. Because of their unique vacuum impregnation, North Creek inductors do not show any signs of mechanical resonance."
"...A larger gauge wire means lower DCR, and lower DCR means the amplifier has better control of the woofer cone at low frequencies, particularly near resonance. A lower DCR always translates directly to tighter bass."
"...our wire wound inductors are made on a custom built, tension-free winding machine. This winding method minimizes the stretch and mechanical deformation of the copper, so there is no strain on the copper and its conductivity remains at a maximum. All copper foil inductors (and most copper wire inductors) are wound at very high tensions, so both the copper and the insulating film are stretched and remain under tension for the life of the product. Tension is differential stretch, which creates microfractures in both the copper and insulating material. This is about the worst thing one can do to a conductor.
The second factor is mechanical stability: North Creek inductors are varnish sealed in a vacuum chamber, which bonds each winding to the six surrounding it throughout the entire body of the coil. Most copper wire inductors are varnish dipped, which seals the outer wraps but not the coil body. Copper foil inductors are usually heat sealed, which seals the edges but not the body. Typical copper wire and copper foil inductors will have a number of mechanical resonances that are activated by current flowing through the inductor, and can be heard to "sing along" with the input signal. Because of their unique vacuum impregnation, North Creek inductors do not show any signs of mechanical resonance."
"...A larger gauge wire means lower DCR, and lower DCR means the amplifier has better control of the woofer cone at low frequencies, particularly near resonance. A lower DCR always translates directly to tighter bass."
2 DR250s, 2 27" Lab15 T-60s, 2 30" Neo Titan 39s, 1 Autotuba...and looking for more!