Can anyone explain the differences mylar caps can exhibit vs polys and what frequency range they may have a negative impact? I lve been using them for testing but then buy polys after im done. I understand this is a general and vague question but im just trying to see what im losing by using those and if so is it only when your pushing lots of power to the speakers that its noticible?
So both are metalized film on plastic. The plastic dielectric is either polyester/ Mylar or polypropylene. The polyester show greater change in capacitance over change frequency than polypropylene.
Curious if any of you have had a chance to measure distortion on the rival paper carbon drivers ? My little amp died , probably my fault but then again my distortion measurements probably wouldnt be accurate anyways as Im still learning that part. Thanks
I won't have a chance to measure mine for several months.
Everything about these photos says Wavecor to me. The motor looks exactly like Wavecor balanced drive, and even the label on the motor, you could literally replace the Rival logo with Wavecor. This is good news, as the retail cost a Wavecor WF182 is a lot more than the sale price of these Rival units.
I've been thinking of what to build with my pair of Motus tweeters. Realistically I want to use the nice underhung Motus woofers, but they carry a pretty high price tag, or do I cave in and buy a pair of the Rival drivers at the current sale price? Decisions, decisions...
Nobody knows what the future holds for door-prizes . I will say that it would be nice to see door-prize drivers show up in more builds at subsequent events.
If you have 4 of those, I have a nice TMM design you can have.
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https://www.vishay.com/docs/26033/gentechinfofilm.pdf