Hi!

I just got an Iron Lung and on first tests it worked fine in combination with my tube screamer clone put before it. So I put the thing on my pedalboard into one loop with the tubescreamer (I’m using a G-lab CS2 for controlling my pedals on the board), powering it from my “stagefive” SKB pedalboard 9 VDC jack, which gives 100mA. The result was that the pedal worked fine for a few moments before it suddenly produced a big, loud, repeating noise. Even when both pedals where off, but the loop still active, one could hear a strange sound (though not as loud), apparently coming from the Iron Lung (a buzzing sound that built up as soon as the power cable for the Iron Lung was plugged in and then turned into an echo; when the tubescreamer was switched on, the strange sound disappeared). The tubescreamer alone didn’t cause any problem in the loop. The tubescreamer worked fine when the Iron Lung was switched off. (So I don’t think that there was anything wrong with the cables)

Question: is this effect caused by the fact that I’m using 100mA rather than 150? (but on the first test, when also powering it from the board, it worked without problerms and I was testing it for an hour or so, today the strange effect came after a few moments of playing (perhaps a minute or so)) What else could the cause be? (I was using a dynamic microphone, SM58 clone; no other effects, into the clean channel of my JVM410 Marshall)