Need help with Ohm C2 speakers please...

[Confusilated]

I am trying to refoam woofers on a pair of Ohm C2's. I bought the foams from simply speakers and have done foam surrounds before. My question is, when I look at these, they appear to have had the foam applied to the front of the cone, and i can't tell if the roll of the foam was concave into the speaker casing as some are, or convex rolling out as most speaker are. I cant' tell if these foams were original or refoamed prior to me getting them, and it doesn't appear that foam was ever applied to the rear of the cones. When I have looked online, I can't tell if these foams were originally mounted from the rear of the cone or front, and whether the roll is as normal, or inverted. I'd like them to have the look of originals and it doesn't matter to me as far as the effort to refoam...I've refoamed both ways in the past. Does anyone know definitively how these foams originally were mounted and if it makes any difference other than aesthetically?

 

[sregor]

@Harvestor If he's still around.
IIRC when they first came out, they had inverted surrounds and double magnets. Later they went to single (larger) magnets and noninverted surrounds. So either way will agree with one of those. You may be able to get some info from Ohm themselves.
Replacement woofers have convex surrounds.

 

[Confusilated]

thanks Steve...it looks like mine have two magnets, so it sounds like I would want to go with the inverted install. I'm not sure though because the surrounds that simply speakers sold me for these seem to have a pretty narrow roll and it looks a little funky inverted. Do you know in either event, if they should be glued to the front? Or should they be glued to the back of the cone?

 

[sregor]

thanks Steve...it looks like mine have two magnets, so it sounds like I would want to go with the inverted install. I'm not sure though because the surrounds that simply speakers sold me for these seem to have a pretty narrow roll and it looks a little funky inverted. Do you know in either event, if they should be glued to the front? Or should they be glued to the back of the cone?

I believe they were glued to the front, but it has been too long ago for me to be sure. Pics from the net look like front, on a small flat area but that is hard to ascertain for sure....

 

[turboyam]

I still have the C2 leaflet here, double magnets = inverted surround, foam glued to the front of cone.

 

[Confusilated]

Thanks for the responses : )
I ended up gluing them as @turboyam referenced. Actually easier than any other foams I've done before. Thanks again

 

[turboyam]

Thanks for the responses : )
I ended up gluing them as @turboyam referenced. Actually easier than any other foams I've done before. Thanks again

Installing the surround inverted is easyer no doubt, the half roll probably sits against the cone edge? centering the inner part to the cone. Never did an inverted myself yet...