Welcome! Need support, you got it. Or share your ideas and experiences.
Return to Planar Speaker Asylum
124.182.26.253
In Reply to: RE: Look at MUG For the III and IIIa crossovers and posted by SteveJewels on January 19, 2021 at 17:26:26
Tymp IVa ribbons are the same as the later MG-IIIa ribbons - ie. 2 ohmsAndy
Edits: 01/19/21Follow Ups:
Well, the original ribbon that I have is 3 Ohm without any resistor. Was the T-IVa released before the MG-IIIa? I also have the replacement ribbon, the 2 Ohm, as this is the only spare Magnepan have for these.The external crossovers are not identical for MG-III/IIIa and the Tympani IVa. The T-IVa is crossed over lower.
Edits: 01/20/21
"The T-IVa is crossed over lower." All else being equal, is that more or less protective of it's ribbon? I've blown my ribbon's 2.5 ohm fuses (mostly by unintentionally switching to a source set to play too loud) dozens of times. When the original Radio Shack was still in business I bought enough packs of both 2.5 and 3.0 ohm which hopefully would have lasted my lifetime, but I was forced into buying even more from eBay.
Fortunately my IV-A remains the same as the day my Magnepan dealer delivered them ~40 years ago, wired them up and played them. (Something I think he did to protect himself from possibly being accused of providing a damaged product.) I moved everything including those IV-As to my present dwelling 28 years ago.
When you live right 'nothing can possibly go wrong.'
Aah, OK - that is very interesting, Roger ... the ribbons in the T-IVa mid/ribbon panels that I bought 10? years ago were 2 ohm.
Recently replaced (as I blew one) with the current (slightly longer!) 3 ohm ribbons.
Andy
The very thin original 3 Ohm ribbons were very fragile. Even though mine survied the Atlantic crossing, one of them ripped later. I bought the replacement kit from Magnepan, the 2 Ohm+resistor+glue+shims etc. (see below) Me too, have an additional par of the recent ribbons.
FAQ |
Post a Message! |
Forgot Password? |
|
||||||||||||||
|
This post is made possible by the generous support of people like you and our sponsors: