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PF50T problem

#22
Back to the OP, I have a pf-20t that goes into purple red blinky mode as well. Does it when I hit it with certain pedals.

Haven’t got it checked yet. Guessing there is a funky tube. But no idea really.

Planning to just retube it, to see if that fixes it, but haven’t yet.
 
#26
BogeyBass said:
I'm pretty sure good 70 to 80% of the current members have been onstage or made their fame with a Ampeg tube amp.
90 percent got there with a tube amp
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I'm pretty old, and although I've been on stage with tube amps, that was when I played lead. Out of several hundred gigs playing bass in 5 decades, I've never played bass on a gig through a tube amp. Last 5 years, mostly without any amp, actually.
 
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#29
oldcatfish said:
Me too. To me, tube amps are great....in the studio. But give me a well designed and reliable class d amp any day for live work.
Most people in an audience wouldn't know the difference anyway.
Click to expand...

No kidding. I'm down to a good combo and letting the PA do its thing. My ampeg stack hasn't moved in months, but I like to know it's still there! ;)
 
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#31
agedhorse said:
I don't know man, seems like an awful lot of issues with tube based amps that simply don't exist with SMPS and class D amps...

I could use all the same silly words you use to describe SMPS here... except that SMPS/class D don't glow and sputter or red plate or need bias, etc.
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Exactly why I stopped using tube amps 20 some years ago. I love the sound of tube amps but I just don't feel confident in their reliability given the quality of today's tubes. (jmho)
 
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#33
ThinCrappyTone said:
Back to the OP, I have a pf-20t that goes into purple red blinky mode as well. Does it when I hit it with certain pedals.

Haven’t got it checked yet. Guessing there is a funky tube. But no idea really.

Planning to just retube it, to see if that fixes it, but haven’t yet.
Click to expand...
How do you like the PF20T?
Does it keep up with the rest of the group?
Thanks
 
#35
tom dicus said:
How do you like the PF20T?
Does it keep up with the rest of the group?
Thanks
Click to expand...
I love it to pieces. Mostly use it for a studio tool. It's such a fantastic DI. But also great for being able to get the power amp cooking at a reasonable volume and mic'ing up cab.

Unfortunately, I haven't much experience playing in a band with it. I did take it to a rehearsal, paired with a 1x12, for my three piece group, and it sounded fantastic, and was absolutely loud enough. But it's not a very loud group.
 
#36
CryingBass said:
I need to point out that the pf50t only works with no speaker load in 1 of the two impedance settings ( not sure which, see the manual )
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At the introduction of the PF50T, it indeed said so on the manual.
However, in reality it doesn't matter if the impedance is set at 4 or 8 ohms, the dummy load will work both ways.
(and the manual has been changed in the meantime, within the year of release actually)
 
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#37
primusfan1989 said:
No need to be a troll, like if you don't have anything productive to add to this conversation in regards helping diagnose a problem or some sort of solution to add why are you even commenting?
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I'm sorry and I happen to agree with you, but perhaps if you had been on the receiving end of his constantly negative comments about for as long as I have, you might be a bit more understanding.

As far as help to the OP, an Ampeg service center should be able to get to the bottom of the problem with a minimum of debate and drama. That's what they are there for, troubleshooting, diagnostics and repair.
 
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#38
Ive had the "blinky" scenario happen on my PF50T, and its in places with KNOWN electrical issues. I reckon its a protection method engineered into the amp.

Everytime its happened to me, i shut her down for a minute, restart and keep on truckin... This has happened 3 times since Ive owned the amp, October 2015. I've never had to re-tube the amp as of yet, and I was on the PF50T train as soon as it took off.
 
#39
BogeyBass said:
Opamps and Blinky winky lights don't belong in tube amps.

Besides it's a Ampeg. So be happy it works

Smps and class d definitely don't belong in a bass amp. Either
Most designs include add copy or tube pres to emulate these blue glow wonders.
And still try to convince people they sound tubey.

Tube amps are still a mythical magical standard that all others are based on.

Would I personally wave solder or use cheap sockets in a tube amp. No
I'd just base the design on well established components, from well established suppliers. Some have been successful making these parts since the 1940s. And likewise there is well over 100 plus years of very successful tube amplifier designs.

Rack mounts , biamps, 50 billion worthless bands of EQs. And numerous other wonderful bass amp fads have thankfully died.

But tube amps. Will never die.
And still be the standard and fantasy that live on in musicians.

If you do make it into the Rock n Roll hall of fame before your liver explodes lol.
I'm pretty sure good 70 to 80% of the current members have been onstage or made their fame with a Ampeg tube amp.
90 percent got there with a tube amp
Click to expand...

Sounds like you just won Buzzword Bingo, dude. :roflmao:

 
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