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發表於 2018-7-7 07:51:06
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本帖最後由 ww129 於 2018-7-7 07:53 編輯
After tube rolling from GE7044 to Philips 5687WB on the other day, I have put a tube cooler over the 5687 to help dissipating the heat as it seems running at a considerable temperature.
I probably will put a Mullard CV4003 to replace the Marconi B329 early next week to see how it works out.
Meanwhile, I am waiting for the delivery of several NOS tubes from abroad and shall try them out once received.
These include:
RFT ECC82,
RCA 5814 Black Plates with 3 mica,
Ei ECC82,
Amperex 7119,
Tungsol 5687 Black Plates with big D-getter, and
Sylvania 5687 Black Plates.
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