7591 Tube Suggestion
riglehart
Posts: 276
I want to order a Quad of 7591 tubes for my vintage Fisher 500C. Is there any big difference between the JJ Tesla, and the Electo-Harmonix?
The reason I want new ones is because music starts to have a "fluttery" output when the volume get's even a little high. Especially on the right channel. The current tubes are GE, but one pair looks different than the other.
The reason I want new ones is because music starts to have a "fluttery" output when the volume get's even a little high. Especially on the right channel. The current tubes are GE, but one pair looks different than the other.
Jolida Tube
Polk 11T, 7, 5, 5jr, 4
Standard equip not worth bragging about.
Polk 11T, 7, 5, 5jr, 4
Standard equip not worth bragging about.
Post edited by riglehart on
Comments
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EH has more authority in the bottom, where JJ excels in the mid-top. If I remember correctly, all NOS 7591's are Westinghouse, no one else made this tube. So, yours might just come from different years. I suggest you to swap the tubes of 2 channels to see the problem follows. If so, you are sure the problem is from weak/bad tubes, and new tubes are indeed needed.
-fredv-
