Is it possible to measure or checking an Airbrake if the unit is still working properly? The reason I am asking is, that I recently had two tube faults on two different amps after using them with my airbrake.
One is my 71 Plexi The other a Suhr SL68
So maybe it was only an unhappy coincidance but I am very afraid to use the Airbrake again. Tube faults are not the end of the world, but I don't want to harm the Power Trannys or sth. like that.
Thanks and all the best Thomas
Last Edit: Jan 31, 2017 16:28:29 GMT -7 by elt41217
Post by irreversal on Jan 31, 2017 19:31:30 GMT -7
Weber wasn't exactly forthcoming with me about what went wrong with my Mass 100. That prompted me to sell off my other two Weber Mass Lites and get back into Brake Lites.
My amp tech told me there was likely a failure within the attenuator which lead to an impedance mismatch, which then took out the tubes and fuse.
I've always been leery of attenuators that don't have dedicated OHM selectors (aside from the Brake Lite), especially at higher levels of attenuation. If you have a weak link somewhere, like a bad tube, it seems to be a ticking time bomb.
Keep in mind when you are using an attenuator you may not realize how hard you are stressing the tubes, transformers, etc. by turning the amp up. Tubes will naturally wear out quicker when run hard; regardless of whether the load is a speaker or a dummy load.
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