Some have seen past info but i will quickly fill anyone in thats lost.
A 3 C ( Audio Contraptions Coil Concepts) have been working on several coil designs. one is now patent pending and the other is getting ready for some hopefully exciting test results which will be in this thread.
* the motor used in this test was chosen due to price point and how common it is. THIS IS NOT a SUNDOWN VS "xxx" comparison.*
initial parts came in yesterday. i bought a shifted SA motor as thats the most practical route. and the cheapest basket, cheapest cones and small dust caps for back compression.
The Coils specs-
STANDARD WOUND COIL
4 Layer flat alum
TOTAL VOLUME OF MATERIAL 1.64196 inch³
4 Layer round alum
TOTAL VOLUME OF MATERIAL 1.49033 inch³
Both coils are D2
Both are .008 BAA
Both will be weight matched when in assembly
Both test assemblies will use the same cone, single spider with single leads, same dust cap and same motor/basket
the regular coil has vent holes closed as the motor does not utilize vented formers.
as seen, the regular coil does have the advantage. all the better if i beat it.
each assembly will be made, mass matched (to make sure there exact for FS /mms comparison) and ran on AC signal. starting at low power and increasing while taking temp comparison along the way finishing with "failure mode". each coil will have an attached temp monitor for live time readings during use.
here are the parts that arrived yesterday. i was sent one spider instead of two (nothing new).
sexiest basket ever
extreme throw cones
one of the spiders, single lead small power
more half A
motor half B
the baby coil.