Weak sound, bad tubes?

Discussion for the new Mark V

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Mark II
Posts: 65
Joined: Sun Feb 23, 2014 11:02 pm

Weak sound, bad tubes?

Post by guijs » Fri Feb 23, 2018 6:22 pm


My Mark V head started to sound very weak on overdrive ch2 and ch3 and failing on ch1. Maybe I have bad tube(s)? My amp was bought in 2014 and I only play at home a couple of hours per week. Do you guys think it could be time to replace all tubes? ($$$ :oops: $$$)


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Mark II
Posts: 127
Joined: Fri Nov 16, 2012 4:55 pm
Location: East Coast, New Jersey

Re: Weak sound, bad tubes?

Post by jediguitarist » Fri Feb 23, 2018 9:48 pm

If the tubes haven't been changed since you bought it, then that might be a solution. It might solve your issues, so it's a good place to start.
I would bring it in to have it check out. If you play 5-6 hours a week, I doubt it would wear out the tubes unless you had a bad batch of tubes to begin with.

Just as a reference, for the past 5 years I gig with a Mark IV weekly. I play in a cover band and I did over 150 gigs last year at 3 hours a night. I change my tubes after one of them blows which was once every year on average. 2016, I blew two sets of 6L6 over 6 months. Obviously, your mileage may vary.

If you play 3-4 hours a week over 4 years, that is equivalent to a weekend warrior playing a Friday night a couple times a month for a year. I could be time to change your tubes, but I'd be more likely to bring the amp in and have a tech give it a look.

93 97 98 PRS CE24
94 98 G&L Legacy
94 G&L ASAT Special
95 G&L S-500
99 Peavy Wolfgang
11 Gibson LP Studio 60

69 Bandmaster Head
88 Quad Pre
91 & 92 Simul 295
92 DC-5
96 Mark IV Maple/Wicker
98 5150 combo
08 Mark IV Wide

Mark II
Posts: 65
Joined: Sun Feb 23, 2014 11:02 pm

Re: Weak sound, bad tubes?

Post by guijs » Sun Feb 25, 2018 3:46 pm

I'll bring to a tech. Thanks!
Mark V Head
1x12 Widebody Closed Back w/ V30
Main guitars:
'98 Gibson Les Paul Std+ w/ SD Slash
'02 ESP MX250 EMG 81/60
'05 Fender Strat Custom Shop w/ Fat 60's pickups

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