StophJS

Thanks for all the input guys. I'd say the tubes are a good 8 years old. I have to say I find it a bit tough to swallow that the POD had ABSOLUTELY nothing to do with this failure. The amp has run fine for a decade, and it was just when I used the 4 cable method with the POD for the first time that this happened. The volume on the TSL 100 drops a lot though when running the 4CM, even with the FX mix cranked, so my amp volume was set quite a bit higher than it's used to. Some posters on the Marshall forum suggested that I overloaded the return input, and that it may well have been related to the pedal. Who knows... could be purely coincidence I suppose.

Well, I believe my POD HD 500 may have just fried my Marshall TSL 100, or at least fried the tubes. I was running my POD into the amp via the 4 cable method. Had the loop level switch pushed in and volume set to about 6. This is the first time I've ever done this for more than a couple of minutes. It sounded excellent for about 20 minutes, and then I noticed a massive drop in volume. I went and looked into the grating on the top of the amp. Two of the tubes seem to be doing nothing, while one tube was burning extremely bright, and I noticed a distinct smell of burning that has now filled the room. Now when I just run a cable from guitar straight into the front of the head, I get absolutely nothing. Yes, I turned the FX mix down. Can anyone please clue me in on what just happened?

I'm hoping someone can shed some light on this for me. I'm currently running my POD HD500 straight into my Marshall TSL 100's FX loop. What I can't seem to make sense of is that the studio/direct ouput mode seems to sound significantly better than the Stack Power Amp mode. Studio direct just seems much smoother, full bodied, and just altogether cleaner. Switching over to stack power amp output is like cranking the treble all the way up and produces a dirty, metallic sort of tone. Any ideas?

I'm hoping someone can shed some light on this for me. I'm currently running my POD HD500 straight into my Marshall TSL 100's FX loop. What I can't seem to make sense of is that the studio/direct ouput mode seems to sound significantly better than the Stack Power Amp mode. Studio direct just seems much smoother, full bodied, and just altogether cleaner. Switching over to stack power amp output is like cranking the treble all the way up and produces a dirty, metallic sort of tone. Any ideas?

Thanks so much everybody. Lots of great info here and I'm definitely looking forward to using the weekend to get a handle on this crazy rig :D

Hey all, I just bought a POD HD 500, which is the first line 6 product I've bought since a Spider 112 about 10 years ago. I'll admit that I haven't read the user manual yet or really researched the pedal because I've been too busy with work. I'm hoping to get some advice here on how to get started. Basically I've got a Marshall TSL 100 half stack, and I'd like to get to a point where I have the option to either just use the pedal for FX in the front and through the loop, and also have the option to run the whole thing with modeling through the loop, bypassing the preamp which I believe it possible. Any advice on how to approach this would be greatly appreciated. I'm also wondering if there just some settings that need to be tweaked from the get-go. I have to admit that I was pretty much shocked when I first just plugged up using my shure studio headphones to check out the built-in presets. I don't think I found a single one that I didn't think just sounded bad. No tones even remotely resembling the quality and genuine tone of a tube amp. Again, any advice is appreciated.