I want to make a test build on two 8'' woofers I have, one I'll build normally, paper cone and dustcap (epoxy glue on the junctions), and the other I'll build with an additional paper whizzer cone to see how they do in the mid-ranges (in terms of on-axis sensitivity mostly, quality isn't my main goal).
But I'm wondering: should I use a more flexible material to bind the voice coil with the main cone, so as to decouple it more at higher frequencies, and use epoxy to bind the whizzer cone to it?
The glue I have for this is this one below, it looks like acetic silicone sealant, but it isn't, it's a transparent hybrid adhesive that's at least some 6x stiffer when dried, and it's much, much stronger in binding to surfaces too (you can't peel it easily like you can peel silicone sealant).
However, I'm wondering if it's necessary. Does the flexibility of the main cone itself already do the trick? Or is a more flexible glue required to decouple it better at higher frequencies?
But I'm wondering: should I use a more flexible material to bind the voice coil with the main cone, so as to decouple it more at higher frequencies, and use epoxy to bind the whizzer cone to it?
The glue I have for this is this one below, it looks like acetic silicone sealant, but it isn't, it's a transparent hybrid adhesive that's at least some 6x stiffer when dried, and it's much, much stronger in binding to surfaces too (you can't peel it easily like you can peel silicone sealant).
However, I'm wondering if it's necessary. Does the flexibility of the main cone itself already do the trick? Or is a more flexible glue required to decouple it better at higher frequencies?
The large, soft paper main cone is naturally decoupled from the voice coil at high frequencies - in simple terms it just can't keep up with the voice coil.
In fact, the main cone in a whizzer type speaker would be be designed with flexure in mind in order to to aid the decoupling.
I don't believe a flexible glue is necessary, but there's always room for experimentation!
That's my starter for ten - an invitation for the speaker designers to chip in!
In fact, the main cone in a whizzer type speaker would be be designed with flexure in mind in order to to aid the decoupling.
I don't believe a flexible glue is necessary, but there's always room for experimentation!
That's my starter for ten - an invitation for the speaker designers to chip in!
Bummer; dunno, though the latest Chrome security update has been blocking me on some things and starting to pi$$ me off big time. Regardless, Google links to choose from.
i use standard glues I get at stores but I take care to form the whizzers to do as close contact to the voice coil possible omitting having a thick film filling a gape.
In my eyes the thinner the glue film the lesser its properties has impact on the sound itself.
Like I did with my DIY alu whizzer
In my eyes the thinner the glue film the lesser its properties has impact on the sound itself.
Like I did with my DIY alu whizzer