Rowbi > did you try my suggestion of the effects loop level?

teleplayer>Yes, I did. It has no effect on the noise level.

-that's strange, it does make a little difference to mine, but I'm usually using high gain settings, I think you mentioned you use the NFL 1 most of the time.

Rowbi > also a new version of firmware came out the other day for DT50

teleplayer>I will give it a try asap.

-Let us know how that goes.

Teleplayer> Rowbi, reading your last reply, it seems that you also have some background noise, don't you? I used to have very quiete tube amps and the DT50 is a bit confusing for me.

yes I do have a small level of background, but it's only slight.

I have a selection of amps, some new and some vintage, and some of them hum from the transformer (not through the speaker) a little, others have a little background noise when idling.  to be honest my opinion of the DT50 is that in an ideal world, we'd have no noise... and there is such a world in the Spider Valve.  BUT to do what you can with the DT50 and a POD HD is truely amazing to me.  if I have to have that little bit of background noise when not playing to get the amazing features and tone I get from the DT50, it's more than worth it... the same can be said for some other amps.. if you want that plexi tone from a Marshall 1959SLP... be prepared to wreck your hearing and pi$$ off your neighbours..

Anyway that's just my opinion, I get frustrated about other things, like gear getting damaged and not looking brand new, whereas other people prefer that vintage worn look... I'd happily rip a vintage amp to bits and put it back together looking brand new and having made it only worth £1k and not £10k because of it... but that's just me... ha ha.

so after me waffling on, where was I...

I think if the noise thing is an issue for you, then now is the time to take it back.  it may well be that the noise you have is the same for everyone, but that doesn't mean it's acceptable to you, even if it is to many others.  you should get the gear that you feel 100% (or as close as possible) perfect for you... maybe this one will just niggle away at you... BUT please give it a good try out (tone-wise) first... as to me, it wounds AWESOME and the small level of background really doesn't bother me (I don't really notice it at all any more).

Cheers

Rowbi

Hi

All tubes have heaters in them or they can't work.  There will undoubtedly be some light coming from the 12AX7 tubes but it won't be as obvious as with the power tubes.  The 12AX7 tubes are not likely to get as hot as the 5881 power tubes.  The 'pencil' test can be used to detect a microphonic tube (i.e. use a BIC ball point pen plastic tube or a pencil to lightly tap each tube with the amp on - the plastic is better insulated than a pencil).  If you find a microphonic tube it's wise to replace it or in the case of power tubes it's wise to replace them in pairs or quads and then re-bias the amp.

Nick

fraggle_ wrote:

 

I'm facing even worse, my amp has cracking noise + background noise during normal operation.

That sounds like it might be a bad tube or tubes to me.

Nick

The crackle issue is especially triggered with the BF LUX' or CLASS A15 or Super O setting on the POD HD.