# power

1. ### Can someone explain RobRob's 10% power switch to me?

I understand why the 25% power switch works. The 8 ohm speaker now accounts for 25% of the total load: 8 / (8 + 8 + 16) = 0.25 But this doesn't work for the 10% power switch. In this, the 8 ohm speaker now accounts for 22% of the total load, not 10%: 8 / (8 + 16 + 12) = 0.22 So why is it a 10%...
2. ### Fun Amp Wattage reality check - member input requested.

In this thread there is lots of interesting discussion: https://www.tdpri.com/threads/this-is-a-great-explanation-of-why-tube-watts-sound-louder-than-solid-state-at-about-6-minutes-in.1043189/ I don't want to start a flame war. I just wanted to request back panel data from people's amps: Check...
3. ### Super Reverb Reissue -- a 45-watt Princeton?

And, the thread title says it all. I'm hooked on my 6 month old SW tweed Princeton Reverb Reissue, and I want MORE. I wanna get that sound only louder. Is a Super the solution? Would running 2x12" speakers make it louder? I'm just ruminating at this point, but would welcome all suggestions...
4. ### Left Twin Reverb on for potentially weeks

I just found out that I left powered on my vintage 1971 twin reverb I have been working on. It was on for days, maybe even weeks *facepalm*. It was on, but in standby. It seems like it works fine right now, but it's there anything I should do to verify? Can I tell if there was any extra wear on...
5. ### Is Power Additive in Series And Parallel?

It seems like the interweb answer is yes and no. In guitar and amp circuits, regarding resistors, is power (watts) additive in both series and parallel? In guitar and amp circuits, does Ohms law E=IR equally apply as does P=I^2R? If you use E=IR the answer appears to be no if voltage remains...
6. ### Pedal hiss with the pedals OFF?

Hello there, I've been having an irritating problem. I have 2 digital pedals in my signal chain (echo and reverb). They would add some very noticeable hiss (white noise'y type of hiss) even when they are OFF. When I remove them from the signal path, all is nice and quiet. I am using a proper...
7. ### Volume drop on Blues Junior

Tonight I went to band rehearsal with my new Vintera Telecaster (I normally play a Gretsch 6120-55VS). We did about ten songs and then tried the push button on the volume knob to see what it sounded like on one song. Suddenly my amp - Blues Junior (tweed) went silent so we stopped playing. The...
8. ### Is Princeton Reverb actually 12 watts?

Everyone says the Princeton Reverb is 12 watts. But... Each of the 6v6GT tubes in the Princeton Reverb are rated at about 12w. Putting these together in class AB, wouldn't the resulting amp be about 24w? For example a Marshall 50w uses two EL34s in class AB. Each of those is rated at 25w, and...
9. ### Amp smells like burnt marshmallows, won't turn on

Hey guys, so I bought a used Fender '59 Bassman RI a few weeks ago. I took it to a recording session the other day and it was the first time I was really able to play it above bedroom levels. the amp was one for probably an hour when it got this horrible smell, like burnt marshmallows (the smell...
10. ### Nova Delay / C. Martin Power Pro 2 issue

For many months my TC Elec. Nova Delay has played nicely with the Carl Martin Power Pro 2 supply unit (it has an option to have one output at the requisite 12v 300mA) but lately after about a half hour of playing, sometimes less, the delay just seems to lose power and turn off. When I use the...
11. ### Current doubling 12v output and 9v output on BBE SupaCharger

I have a very specific use case, where I would like to power a 12v pedal, using my BBE SupaCharger, however it needs more than the 100ma that the 12v outputs can provide. I know from research and experience that I can use a current doubler cable (i.e. the one from VooDoo Labs for their PP series...