I recently breadboarded a quarter-watt, all valve, guitar amp. Connected to the stock speaker in my Fender guitar amp, it's too loud to overdrive in my apartment without worrying that I might be annoying the neighbours.The small amps are big fun IMO
Guitar speakers are very efficient - it takes only a few tens of milliwatts to get loud by any reasonable standards. Approximately 30 milliwatts will get you 85 dB SPL at 1 metre using a 100 dB @ 1W @1m guitar speaker. 85 dB is loud enough to start damaging your hearing over time, despite what OSHA says.
-Gnobuddy
Having fun with Ruby
waltons
or similar). And I'm pretty sure much of the fun is from the wall wart supply sagging - the bright green LED on mine dims substantially. I should try it with my 3A lab power supply but I'm having far too much fun.
I'm loving the Ruby driving a crappy 8" PA speaker plus teleclone with 4-way mod and out-of-phase pickups: sort of psycobilly grind (thinkWith 9 V actually not that much more power ...... But that seems enough for my studio .
BUT ........... It can be powered up with a heftier wart .
waltons
or similar). And I'm pretty sure much of the fun is from the wall wart supply sagging - the bright green LED on mine dims substantially. I should try it with my 3A lab power supply but I'm having far too much fun.
No, not me. Pretty sure I've been on the same playbill as them. But that was a long time ago in a galaxy far, far awayI'm loving the Ruby driving...
Sounds great. That 8 inch isnt crappy for guitar. Is it you playing? Cheers!
The Ruby I've got is making a similar slightly grungy, lo-fi, hick-billy tone. Not the same but in the same ball park. At much, much lower volumes.
It's nowhere as aggressive as a Marshall tone, nor is it solid state fuzzzzz.
I think it's a mix of the FET front end followed by a power-amp with collapsing rails. Plus a truly crappy speaker set up (nothing under 150hz, nothing over 4khz, plenty of cardboard box flapping).Do you think the input ( jfet ) buffer makes that much
of a differance with that type presentation ?
No tone control, so gotta rely on the axe set up to take out most of the bass to avoid pharting. My chino-line is set up with a Bill Lawrence 5-way switch and phase reverse switch (push/pull on volume). It's a pretty flexible setup while still looking like a "stock" tele.
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