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Post by bbutler356 on May 2, 2018 10:58:20 GMT -7
Or does it, for some reason, still use up all four tubes fairly evenly?
I ask because I want to know what to do when it comes time to change tubes.
And by the way, which two 6V6s does the 20 watt setting use?
I could use it on 40 watts almost as conveniently as I could on 20, and if it would simplify matters, then I'll just use it on 40 all the time.
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Post by scottunzicker on May 2, 2018 11:20:51 GMT -7
bbutler356 - The short answer is that all power tubes are used at the same rate regardless of power setting. I'll try and find the technical details, but from what I understand, 20 watt mode keeps all the power tubes amplifying signal, but only two of them are sending the amplified signal on down the line to the speaker.
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Post by scottunzicker on May 2, 2018 11:23:07 GMT -7
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Post by bbutler356 on May 2, 2018 13:59:25 GMT -7
I read what the Doc said about rotating the tubes, but I'd still like to know "If you always run it at 20 watts (rarely 40) until those two tubes need replacement, does that mean the other two need replacement also?" And will a good local tech be able to tell which pairs need to match each other?---or do ALL FOUR need to be matched with each other?
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Post by doctorice on May 2, 2018 14:28:02 GMT -7
I think Doc told me when it's time to replace, replace all four. They need to be a "matched quad", i.e., all four matched. (Most reputable tube dealers sell matched quads.)
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Post by scottunzicker on May 2, 2018 14:30:14 GMT -7
I read what the Doc said about rotating the tubes, but I'd still like to know "If you always run it at 20 watts (rarely 40) until those two tubes need replacement, does that mean the other two need replacement also?" And will a good local tech be able to tell which pairs need to match each other?---or do ALL FOUR need to be matched with each other? Just out of curiosity, what's your ultimate goal here? Are you trying to just run 2 tubes in yours? Thanks.
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Post by headshrinker (Marc) on May 2, 2018 15:22:34 GMT -7
You are wearing all the tubes at the same rate, even if you always run it at 20 watts, so you need to replace all four at one time, also, all four tubes need to be matched for the best sound. Same is true with the Remedy as far as I know.
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Post by bbutler356 on May 3, 2018 10:23:17 GMT -7
I read what the Doc said about rotating the tubes, but I'd still like to know "If you always run it at 20 watts (rarely 40) until those two tubes need replacement, does that mean the other two need replacement also?" And will a good local tech be able to tell which pairs need to match each other?---or do ALL FOUR need to be matched with each other? Just out of curiosity, what's your ultimate goal here? Are you trying to just run 2 tubes in yours? Thanks. Goal is to find out how to replace the tubes. If you only use 20 watts, and you're only wearing out 2 of them with 20 watts, why replace 4 tubes if they're not all decaying? Although now someone has said that the whole quad needs to be matched. That answers my question also.
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Post by scottunzicker on May 3, 2018 12:21:55 GMT -7
Just out of curiosity, what's your ultimate goal here? Are you trying to just run 2 tubes in yours? Thanks. Goal is to find out how to replace the tubes. If you only use 20 watts, and you're only wearing out 2 of them with 20 watts, why replace 4 tubes if they're not all decaying? Although now someone has said that the whole quad needs to be matched. That answers my question also. Yup. From everything I've seen, read, and heard, all 4 tubes wear at the same rate, regardless of your power setting, hence a matched quad is always required when replacing them. To throw another monkey in the wrench, have you tried 5881s in your Z-Lux? I really, really like them.
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Post by bbutler356 on May 7, 2018 8:24:05 GMT -7
Goal is to find out how to replace the tubes. If you only use 20 watts, and you're only wearing out 2 of them with 20 watts, why replace 4 tubes if they're not all decaying? Although now someone has said that the whole quad needs to be matched. That answers my question also. Yup. From everything I've seen, read, and heard, all 4 tubes wear at the same rate, regardless of your power setting, hence a matched quad is always required when replacing them. To throw another monkey in the wrench, have you tried 5881s in your Z-Lux? I really, really like them. Well thanks. I'll think about it.
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Post by thatstatuemoved on Aug 1, 2018 15:12:38 GMT -7
Late to this party, but I have always wondered the same thing--glad you posted this.
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