Metroplex tube questions

  • Thread starter Thread starter cameron711
  • Start date Start date
I will take a shot at this but I am not a tech.

I can't download or hear your clip because I don't use Apple. If you want to try Youtube or Soundcloud or Box etc I will listen.

Without that though, the first thing you can DO without touching anything INSIDE is turn on your amp, unplug your guitar, and tap on the preamp tubes one by one with the eraser end of a pencil. Not enough to crack glass, just enough to see if you can hear the tapping sound coming out of your speakers. This could indicate a bad preamp tube but is not full proof.

After that, I would start replacing preamp tubes with a KNOWN GOOD ONE starting with V1. Then V2, V3 etc.. If not sure how to do this, simply let us know. I actually did a video of all of this if I can find it. Regardless these are 2 fairly simple steps to start with.

Next of course would be to double check all cables in the signal path, including the fx loop if you have one. Test guitar in another amp. Test amp with a different cabinet if possible, etc. Sometimes a bad power tube can cause issues too but lets start with this stuff.

Good luck,
 
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What sort of problems are you having with it? Without a description of what is happening or another accessible clip you should reach out to George Metropolous.
 
😂 true with the name Cameron it’s possible….sorry, guitar took second place for a while due to kids/work etc, but I’m still here! Just played today and it reminded I gotta check it out. I’m sure it a preamp tube so I’ll start there. Any preamp tube recs for this amp? I’m going to need to get a few as I don’t think I have any laying around!
 
If you want some good NOS tubes for that amp contact @just42dave

He also posts tubes in the classifieds a lot.

If you don't care about that or just need something to test with contact www.eurotubes.com - I buy JJ's from them. Have not tried too many of the other new production (cheaper) tubes tbh.
 
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