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  1. E

    Marshall TSL100 head new tubes issue

    I hope someone here can cast a little light on my new tubes issue..... I have a TSL100 head, and have now got new TAD EL34 REDBASE tubes, and put them in.....after about 20 minutes in the on position, without guitar plugged in and volumes set to zero, I tried to bias it, the right pair (seen...
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    TSL100 head and EL34B-STR powertubes

    Hi MartyStrat54....you're quite right that new tubes doesn't guarantee anything.....in fact, I've read so many comments and homepages, where it's stated that quite a big percentage of tubes are faulty from the factory, or shortly after start using them..... I had my amp on for at aboutt 15...
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    TSL100 head and EL34B-STR powertubes

    Hi again A little update....I just found that my tubes had gone up to as much as 91,3 mV....I have now turned it down to about 85,5...and see what I get from here.... Originally I set it at 88, apparantly the tubes need a re-bias several times when new.... So far the sound is more round...
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    TSL100 head and EL34B-STR powertubes

    Many thanks to you all for your helpful replies....I will rebias it to 85 or 86 and see if this reduce the heat a little, as well as testing if the sound improves.... If this improves the sound I can keep this setting, otherwise they'll go back to 88.... Besides, the sound is more important...
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    TSL100 head and EL34B-STR powertubes

    Hi there My TSL100 head has got new EL34B-STR tubes from TAD, and they have really given life to my amp..... I biased it to 88, and it works fine, the tubes look quite normal, no red plating etc.. But holding the hand over the small grill on the top of the amp head, it feels that they are...

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