Inverted motors

[Hintzyboy 5,000+ posts]

Check this out

http://criticalmassaudio.com/catalog/index.php?act=viewProd&productId=3

Would it be possible to out together a sub like this on your own, just having the motor stick out through the spot where the dust cap would normally go? I have no idea how to build a subwoofer, I just plug and play lol. Anyone with experience please shine some light on this dilemma!!!!!!!!!

Click to read more...

 

[Beat_Dominator 5,000+ posts]

Sure it's possible, you would need to build some supports around the motor for stability.

 

[Hintzyboy 5,000+ posts]

Is there anyone on here that could do it? I want a decently high-powered woofer (1000-1500w dual 2) but am working in the very limited space behind the seat of my Std. Cab s10

 

[Beat_Dominator 5,000+ posts]

Not that I'm aware of. You would need some custom tooling for a job like that and it would not be cheap.

 

[Hintzyboy 5,000+ posts]

nice looking, but not very powerful. 15 only handle's 600w:crap:

 

[creyc 10+ year member]

Cool idea though...

Bracing would actually be easier than bracing for a traditional style woofer, because you are for the most part "wrapping" the cone around the motor. It's easy to keep equidistance from surround to motor, not to mention reducing flex by "pulling" the cone rather than pushing it. (try to push a pencil in a straight line, then repeat pulling it)

I wonder if it's acoustically less efficient due to the inverted cone shape. It might end up just dispersing the sound wave in all directions and losing output from the listening point. Definitely something to consider, though I don't have the manufacturing tools available to build a working model ATM.

 

[Hintzyboy 5,000+ posts]

According to Critical Mass, the inverted motor design increases the woofer's ability to handle high amounts of power for long periods of time.

 

[ultimate157 5,000+ posts]

nice looking, but not very powerful. 15 only handle's 600w:crap:

the 15 handles 1100w RMS //content.invisioncic.com/y282845/emoticons/eyebrow.gif.fe2c18d8720fe8c7eaed347b21ea05a5.gif

 

[danteBirosel 5,000+ posts]

hahaha that woofer looks so cute..

 

[UndercoverPunk 5,000+ posts]

Cool idea though...
Bracing would actually be easier than bracing for a traditional style woofer, because you are for the most part "wrapping" the cone around the motor. It's easy to keep equidistance from surround to motor, not to mention reducing flex by "pulling" the cone rather than pushing it. (try to push a pencil in a straight line, then repeat pulling it)

I wonder if it's acoustically less efficient due to the inverted cone shape. It might end up just dispersing the sound wave in all directions and losing output from the listening point. Definitely something to consider, though I don't have the manufacturing tools available to build a working model ATM.

//content.invisioncic.com/y282845/emoticons/eyebrow.gif.fe2c18d8720fe8c7eaed347b21ea05a5.gif Pushing and pulling a pencil are hardly the same theory as subwoofer design.

The part where that idea falls apart the earliest is where you forgot that a subwoofer goes posative and negative, not simply posative only to return back to neutral.

So mounting a motor infront would not be better for keeping travel lineral, because you wouldn't really change anything except the phase.

 

[creyc 10+ year member]

I'm.....wrong.

 

[Hintzyboy 5,000+ posts]

the 15 handles 1100w RMS //content.invisioncic.com/y282845/emoticons/eyebrow.gif.fe2c18d8720fe8c7eaed347b21ea05a5.gif

The Illusion Carbon series 15 only handles 600w RMS. I was responding to jmanpc's post.

http://www.illusionaudio.com/docs/carbon_subs.htm

 

[ultimate157 5,000+ posts]

Yea I just realized that. You're right //content.invisioncic.com/y282845/emoticons/crap.gif.7f4dd41e3e9b23fbd170a1ee6f65cecc.gif

 

[Hintzyboy 5,000+ posts]

I tend to be