Katana - Sudden clipping sound, loss of treble

Started by kthshly, August 27, 2018, 06:31:52 AM

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kthshly

Over the weekend, I noticed my Katana Artist developed a harsh digital "clipping" sound on all of my presets. I tried the factory reset a couple of times to no avail. Also, when working in Panel mode, I noticed that the treble knob had to be turned up almost all the way on the Clean channel, otherwise the sound was really muddy (I'm sure you all know how usually bright these amps are).

Does anyone have any suggestions? I'm about to write to BOSS and see if they'll repair it under warranty but if there's something I can do to fix it myself first, I'll definitely try that.

gumtown

Sounds like a blown output Amplifier chip, or speaker failure.
Free "GR-55 FloorBoard" editor software from https://sourceforge.net/projects/grfloorboard/

kthshly

Could you recommend any ways I could figure out which of those things it could be?

gumtown

Pull the speaker connectors off the speaker terminals and connect to an external 8 ohm speaker/cabinet (careful not to short the wires together).
If it sounds OK with the external speaker, the internal speaker is at fault.
If it is still distorted, try connecting and external amplifier to the "line out" and check if the sound is OK from there, if it is, then the Katana amplifier is at fault.
I am not sure where the headphones out sits in the chain (before or after the amplifier), but might be worthwhile checking there too, and a different guitar.

Either way, if the sound is still horribly distorted and lacking treble after a factory reset, then something is wrong with the Katana and requires a warranty repair.
Free "GR-55 FloorBoard" editor software from https://sourceforge.net/projects/grfloorboard/

kthshly

Thanks! I'll just take it to the shop I got it from. It's still under warranty.

storkraft

I think I have the same problem... Did you solve it? What was the issuse?

ED888888

Quote from: storkraft on June 23, 2020, 03:45:51 PM
I think I have the same problem... Did you solve it? What was the issuse?
I had the same problem, but it seems it's not that common, so I sent it back for warranty, and they said it had no problem.
IDK if anyone solved this, but now I have a shitty sounding amp, and there's no solution, Thanks, Roland!

gumtown

Try a factory reset,
some bad sounding amp problems can from using Tone Studio editor and inadvertently messing with the Global EQ settings,
and not realizing that the settings changes are saved as soon as they are changed, and the Global EQ affects all of the amp channels.
Free "GR-55 FloorBoard" editor software from https://sourceforge.net/projects/grfloorboard/