Joyo JF-14 American Sound

[KirkP]

It's labeled 'Voice'. Bottom middle knob. Might not be a presence control for all I know but seems to work like one. The IR function is also a variable for me. It's supposed to emulate something like a 1X12 speaker. And I think it does and it's not something you can turn off. Yet, I really prefer running a speaker IR and amp sim behind it using a Joyo Cab Modeler. Sounds good to me and I get a broader palette to screw around with. Joyo American, Cab Modeler, tuner, and a reverb easily fit on a small one row pedalboard with a battery power supply that will run it for a couple of hours.

I’ve had a Joyo JF-14 for several years. It’s great at very low drive settings for warming up my tone with a solid state amp. The EQ and voice controls make it easy to dial in tones I like.

I researched what some of the pedal forums had learned about it. As I recall, the Voice pot is basically a midrange control ahead of the distortion/clipping stage. The other EQ pots are on the output.

I think the speaker simulator is just a lowpass filter to approximate high frequency rolloff of typical guitar speakers. It’s nothing fancy like an IR model. If you were to use the JF-14 in combination with an IR loader with an IR of a specific speaker cabinet, that might result in slightly more treble rolloff than the IR model intended. But if that were a problem, a treble tweak might take care of it.

Here’s an unofficial schematic.
https://schematicsonline.com/wp-cont...ican-Sound.pdf
The stages in order are: voice, drive, two high pass filters (for speaker sim), level, mid, base/treble.