Built Nightshade v.3 15" - Realm of Excursion



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Old 03-03-2014   #1 (permalink)
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Default Built Nightshade v.3 15"

I came in yesterday and built this bad boy... a customer had ONE unit on order for a bit and I got a pair of the Aluminum sleeves as samples so I am building this one and one other one this week (both with fat 8-layer coils and are single sub orders). These also don't call for any Gap ID sleeves as they use the fat coil -- so I have enough parts to make them

-----


* Collecting the parts up.


* You can see the black coated aluminum pole sleeve in place on the pole but not Gap ID sleeve -- so the overall gap is still pretty massive. The "fat" coil fills it up nicely, though.


* Starting the rear glue joint


* Rear glue joint completed


* Prototype "XL" lead Wire option. The XL spiders for the NS v.3 are EXTRA red in color. The stock spiders are a very faint reddish with smaller triple lead wires. These leads are prototypes for now -- we'll offer them later as an option for anyone.


* It was interesting to get these all in the terminal.


* Finished product


* Finished product

-----

So I hope to get it tested and dust cap on today
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Old 03-03-2014   #2 (permalink)
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Default Re: Built Nightshade v.3 15"

Wow that top plate is sexy. Always doing amazing things jacob. Keep up the good work.
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Old 03-03-2014   #3 (permalink)
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Default Re: Built Nightshade v.3 15"

I pulled the T/S spec today -- notice how low inductance is even with the massive fat coil. That is the pole sleeve in action -- and the NS v.3 also has a magnet ID ring and a pole cap ring... so triple faraday action



Yes that is right around 1/2 of the Re in terms of Le.
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Old 03-03-2014   #4 (permalink)
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Default Re: Built Nightshade v.3 15"

Im trying to understand how things effect the performance of speakers. What is the main benefit of keeping the inductance so low and how would it effect the preformance?
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Old 03-03-2014   #5 (permalink)
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Default Re: Built Nightshade v.3 15"

A super short explanation... is that lower inductance allows you to play higher frequencies better. The "fat" coil native inductance is so high it would interfere with even sub-80Hz bass.

Inductance also creates really harsh 3rd order harmonic distortion; it is the third biggest contributor to loudspeaker distortion after BL and suspension distortion (suspension is 2nd order so it's somewhat warm sounding).
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Old 03-03-2014   #6 (permalink)
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49konvict has the highest rating we can give - To make it this far is  nearly impossible49konvict has the highest rating we can give - To make it this far is  nearly impossible49konvict has the highest rating we can give - To make it this far is  nearly impossible49konvict has the highest rating we can give - To make it this far is  nearly impossible49konvict has the highest rating we can give - To make it this far is  nearly impossible49konvict has the highest rating we can give - To make it this far is  nearly impossible49konvict has the highest rating we can give - To make it this far is  nearly impossible49konvict has the highest rating we can give - To make it this far is  nearly impossible49konvict has the highest rating we can give - To make it this far is  nearly impossible49konvict has the highest rating we can give - To make it this far is  nearly impossible49konvict has the highest rating we can give - To make it this far is  nearly impossible
Default Re: Built Nightshade v.3 15"

Thank you for the explanation. Im rebuilding two e8v1s and trying to make them more sealed friendly so hearing how things actually effect the performance is very helpful.
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