Cyburgs-Needle for Tangband W3-871S

[Timn8ter]

Some of these Pioneers were quite good, and most respond to a bit of tweaking.

Originally posted by Tweakmeister D

[planet10]

4" car speakers... not quite what i was expecting. Do get some ductseal on the basket & fill out the magnet/basket junction so that it is smooth.

Puzzlecoat for sure. those shiny whizzers are kind of interesting, some PK on that wouldn't hurt -- and try the 98 cent tweak.

dave

[Nuuk]

some PK on that wouldn't hurt -- and try the 98 cent tweak.

PK?

98 cent tweak?

[Ropie]

Originally posted by Nuuk


PK?

98 cent tweak?

PK = puzzlecoat, or you could try a mix of turpentine and damar varnish.

98 cent tweak, I think, is something to do with adjusting the whizzer cone with a piece of foam or rubber(?)

[planet10]

Originally posted by Nuuk
PK?

http://www.t-linespeakers.org/design/tweeks.html

watered down white PVA wood glue is close enuff... dammar i find best on paper whizzers, but it is a widely used treatment. It would probably have little effect on the material of your whizzers.

98 cent tweak?

i no longer have a link to Marc Wauters original treatise.... but it is now used to name any tweak that creates a support for the edge of the whizzer and some damping for the cavity it forms with the cone. My prefered implementation is a thin piece (8-10mm) of very low density foam cut into a strip just wide enuff into friction fit around the whizzer with one cut edge against the edge of the whizzer and the other edge resting on the cone. You want to get away with as little as possible or you can kill the dynamics. (attached is a drawing i did just the other day to illustrate the 98 cent tweak)



You can just make it out in this pic (you can see one end not quite placed right -- i ended up cutting a fresh strip (pink to boot) -- these speakers are probably close relatives of yours, and yours could be put in the same class -- in UK you'd call it a 1 quid speaker.

http://www.t-linespeakers.org/FALL/2buck.html

These really got me going on the path of "a pretty musical speaker can be made for almost nothing" path.

dave

[planet10]

oops, forgot the illustration....

[Nuuk]

Thanks Dave, I have some white glue here and some artists varnish. The whizzer cones are paper.

I did the whizzer cone tweek (foam) on a previous speaker and will try it on the Pioneers.

[planet10]

We expect a report back... and more pictures.... isn't this fun?



dave

[Nuuk]

One coat of diluted PVA glue already applied. The real stuff starts tomorrow!

[planet10]

Originally posted by Nuuk
One coat of diluted PVA glue already applied.

The cone gets a nice shiny finish with the 2nd coat. Don't forget the dustseal (bluetac, even plasticine) on the basket as it is probablythe single most effective mod.

dave