klasi Posted August 24, 2020 Share Posted August 24, 2020 Is there a way I can verify on my own that a set of tubes is matched? I purchased new tubes (preamp & power) from Tube Depot for my DT50. I specifically ordered the tubes to be matched. Then I took the amp & tubes to a Line 6 certified repair shop. The shop called me later on and said the new power tubes were so mismatched that they had to order me some new ones. And I don't believe I can return the ones I got from Tube Depot. I have now, in effect, paid double to re-tube my amp. It also makes me wonder how many times any tube dealer just sends out tubes counting on the customer having no way to verify if they are truly a matched set or not. Quote Link to comment Share on other sites More sharing options...
psarkissian Posted August 24, 2020 Share Posted August 24, 2020 There is a Gm and Ip number on the tube labeling. The Gm has to be the same on both and the Ip has to be the same on both, then they are matched. Would've been easier to take it to the Line 6 authorized shop and let them order the tubes from us. Sorry it was such a problem for you. Quote Link to comment Share on other sites More sharing options...
klasi Posted August 24, 2020 Author Share Posted August 24, 2020 Thanks. Lesson learned. Quote Link to comment Share on other sites More sharing options...
psarkissian Posted August 24, 2020 Share Posted August 24, 2020 Also, check out my posting on vacuum tubes here,... Quote Link to comment Share on other sites More sharing options...
PaulTBaker Posted August 25, 2020 Share Posted August 25, 2020 yes it would be easier to take it to a shop..... however there is not one in 500 miles of me! I have a bricked dt25 that was bricked trying to upgrade to ver 2.0 so I could use it with the helix. very frustrating.... so, saying it would be easier to take it to a shop is kind of flippant and relative..... and sorry, not meaning any disrespect, it just hit me wrong cause I miss having my other amp! Quote Link to comment Share on other sites More sharing options...
psarkissian Posted August 25, 2020 Share Posted August 25, 2020 Get with Line 6 Support and see about sending it to Line 6. My lab mate is really good at dealing with DT25's. Quote Link to comment Share on other sites More sharing options...
klasi Posted August 26, 2020 Author Share Posted August 26, 2020 Just want to be sure & safe here. What rear speaker jack should the amp be plugged it to for my DT50 2x12? A, B, Or C? Quote Link to comment Share on other sites More sharing options...
psarkissian Posted August 26, 2020 Share Posted August 26, 2020 Yes, "C",... that's the correct speaker output for the DT50-212. Because of how the two speakers are wired. Quote Link to comment Share on other sites More sharing options...
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