|
Planar Speaker Asylum Welcome! Need support, you got it. Or share your ideas and experiences. |
|
|
|
Planar Speaker Asylum Welcome! Need support, you got it. Or share your ideas and experiences. |
|
In Reply to: "The T-IVa and the 20.1 ... basically have the same tweeter ribbon driver" ... posted by andyr on February 15, 2015 at 18:27:59:
About the various ribbons. Originally there was a wide 3 ohm ribbon (like in my T-IVa). This was replaced by a wide 2 ohm ribbon + resistor. Maybe this to was to increase the reliablity of the ribbon? Since quite a few years, there is a narrow 3 ohm ribbon. The steel core is the same but the magnets are thicker, the slot between the magnets is about 5 mm. The older ones had a slot about 7 mm wide. Theoreticly it should be possible to use a narrow ribbon in the wide slot but sensitivity will be lower than for the ones with thicker magnets. The difference in length is 0.6", my T-IVa and my MG 3.6 have different ways of connecting them at their ends. The replacement 2 ohm ribbons have the later type of connecting blocks used today. The replacement 2 ohm ribbon came with a strange recommendation to insert the series resistor ahead of the crossover, would give a different frequency response. I think, the resistor needs to sit after the crossover just ahead of the ribbon driver. Of course, one could also use a different crossover, something like the ones used in the 20-series.
This post is made possible by the generous support of people like you and our sponsors:
Follow Ups
- RE: "The T-IVa and the 20.1 ... basically have the same tweeter ribbon driver" ... - Roger Gustavsson 23:29:02 02/15/15 (0)
Top of Page ]
[ Contact Us ]
[ Support/Wish List ]
[ Copyright © 2024, Audio Asylum, all rights reserved ]
