Recent content by xico

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cossor 805 current plate

i am now even more confused , i do think the meters from my amp measure plate current, hence the 120ma per tube for the Original ones, (it can not be grid , is to high for that), what confuses me is that (as i posted above ) the data sheet says :plate current : 65ma, but indeed it perplexes...
- xico
- Post #7
- Sep 17, 2019
- Forum: Vacuum Tube Audio Forum
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cossor 805 current plate

there are two ampere meters , one for each tube.
- xico
- Post #5
- Sep 17, 2019
- Forum: Vacuum Tube Audio Forum
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cossor 805 current plate

-on the operation manual : -select the tube you want to adjust (from V01 and V02) ,then position the bias current and adjust the tube bias with a small screwdriver .make sure all the bias level of V01 and V02 are the same. -inspect the ampere meter on the front panel and make sure the needle is...
- xico
- Post #4
- Sep 17, 2019
- Forum: Vacuum Tube Audio Forum
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cossor 805 current plate

thank you for the answer, well, I have a line magnetic 805ia integrated amp, this amp has two meters , each meter should be at 120ma with the Original 805 tubes (following the manual) . i can't find more information online about the cossor 805 tubes so that i know how to bias them . on the data...
- xico
- Post #3
- Sep 17, 2019
- Forum: Vacuum Tube Audio Forum
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cossor 805 current plate

can somebody help me ? bought cossor 805 tube to substitute Original ones, now ...original ones are biased at 120ma, the cossor following the given data sheet that comes in the box are biased at 65ma ! ...can this be ??????!!!!!!! huge difference in bias hence the question. thank you.
- xico
- Thread
- Sep 16, 2019
- Replies: 6
- Forum: Vacuum Tube Audio Forum