Planar Speaker Asylum

RE: Tweeter works with no connection in the attenuator socket

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Hi Neo,
Yes I agree it weird that someone did not bypass the mid fuse if they went inside the panel. I think bearing in mind the mid fuse is not bypassed its highyl unliekly teh tweeter fuse is.
There obviously is something over the attenuation slots, - either a short or a resistor, - perhaps they accidentily put two wrong odd value resistors there (I know its unlikely though!) but you never knew. Will find out tongith for sure.
I agree measureing the ribbon is likely to tell me very little, - I need to test some other wayit, - swapping the tweeters from speaker to speaker is too much work. In my post to Satie today I suggest desoldering the wires and hooking each tweeter directly to a tube power amp to test (with HP signal from my Behringer), - then I can hear if there is any differenc in the HF response of each. I could put a cap in series to prevent oscillation, and just try a low volume test. If there is still a difference then the problem is obviously definitely with one of the tweeters and not the components in the crossover.
I've not taken a tweeter out of one of these before, - do you know if its possible to access and desolder the tweeter wires without having to actually take the tweeter out of the speaker?

Thanks again for you help,
Cheers,
Colin

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