coil and spider placement

Center of the coil coincides with the center of the gap plate.

Are u using the HW motors? I dunno what coil length u got but if its stock from RD then about 1/4" is left out the top

o i c.. well then go with the model shown above... O those HW motors arent that great anyways... u should sell me one or both...lol

what motor does it have on it How much

To Elaborate on what Ciazono said... This is how you can figure coil hieght with random measurements...

Measure the topplate thickness.. Then divide by 2...

Measure the coils WW and divide by 2..

Then minus your total from the top plate from the total of your Coils WW.

IE:

1" top plate

2" WW

Top plate: 1" / 2 = .5"

Coil WW: 2" / 2 = 1"

Coil height = 1" - .5" = Coil height from the top of your top plate of .5"

Good luck, have fun.

Thanks for the follow up ssacket. //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

if ur using a longer than stock coil dont put in the mid leave more out of the top plate, dont want ur coil to bottom out,fyi...

if ur using a longer than stock coil dont put in the mid leave more out of the top plate, dont want ur coil to bottom out,fyi...

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So you're saying set the center of the coil wind width out of the gap more simply to keep a coil that is apparently too long for a motor from bottoming? Do you know how asymmetrical your BL curve would look and how non-linear the driver would be? That's not even considering how it would no longer be tracking with the Cms plot, creating large amounts of harmonic distortion. The only way I could see that being useful (but still not optimal) is for a driver that's strictly intended for burping, where it would never see even close to the full travel and thermal power handling has a greater importance than stroke. You would certainly never want to do that with a driver that is intended for musical playback. Unless you absolutely love distortion.

if the coil is a lil long pulling the coil .060 off center isnt going to off set that much. i'm not talking .250+ bro.

ur right on the distortion factor because pro audio speakers generally have the coil out of the gap more for added distortion because it "sounds" louder.

if the coil is a lil long pulling the coil .060 off center isnt going to off set that much. i'm not talking .250+ bro.
ur right on the distortion factor because pro audio speakers generally have the coil out of the gap more for added distortion because it "sounds" louder.

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Roger. For some reason I was thinking you meant like a way-long coil placed way off center. You're only talking like 2mm which is probably about where some companies' tolerances lie already, lol. That wouldn't be so bad then.