Jim Cornell Posted October 9, 2002 Share Posted October 9, 2002 I have 3 Solvtec output tubes, and one Golden dragon output tube here, read my results post then i need you to answer a question here! All the output tubes are manually biased set, using a screw and light configuratiion! In the owners manual, conrad johnson says they dont have to match, in name brands, is this true? Jim Quote Link to comment Share on other sites More sharing options...
mobile homeless Posted October 9, 2002 Share Posted October 9, 2002 Well, yes. Technically, they dont have to match brand-wise; in other words, the tubes will work and you can bias each tube at the proper point (have you experimented here?). On the other hand, different manufacturers have different sounding tubes with certain sonic qualities that might be highlighted in one brand and more recessed in another. This is why people prefer certain makes of tubes over others. But the sound of the tube is a combination of the circuit and the way it is run mixed with its own properties. This is an oft debated idea in other forums with some thinking a tube's entire signature is due to the way it is run and with different operating points can be made to sound like others. All things being equal, if you roll different tubes in an amp at the same operating points, then you will get slightly to more noticable differences in sound, depending on the tubes. So while it will not hurt the amp, I would prefer to have a quad of the same type of tube. At the least, you will want a backup set of tubes for your amp. The choices appear to be interesting as I noted in your other post. Quote Link to comment Share on other sites More sharing options...
Jim Cornell Posted October 9, 2002 Author Share Posted October 9, 2002 Thank you mobile, im getting a spare set soon, just to have them! Jim Quote Link to comment Share on other sites More sharing options...
mobile homeless Posted October 9, 2002 Share Posted October 9, 2002 Ummmm... dont just buy a spare set of Sovtek EL-34. There are differences in new EL-34/6CA7 and some research is a good thing. Perhaps throw your findings back this way. Quote Link to comment Share on other sites More sharing options...
Jim Cornell Posted October 9, 2002 Author Share Posted October 9, 2002 I will definately do that, advise is the key! Jim Quote Link to comment Share on other sites More sharing options...
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