• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

Guitar amp for cool hifi vibes

Could you change out the speakers in a tube guitar combo amp and use that as your hifi system or would it sound terrible?

I think it would be cool to hollow use a jazz amp like one of these as they're good for clean tone. I know it will be expensive but I think the aesthetics could be really cool.

Please let me know if this would just be a huge waste of money. 🙂
 
The output transformers would likely preclude use as a hifi amplifier - their frequency response is tailored to what the guitar can produce.

Depending on make and model, guitar amp output transformers won't produce much below 60Hz and above 5kHz. Low frequency response will be better with bass guitar amps, but worse at high frequencies. You could hypothetically replace the output transformers with broader-band units.

If it's the look that you're after it might be a better plan to build your own amps into empty cabs - there are lots of places that sell kits like this. You're then not paying for the unused speaker, and can more easily put in a more appropriate transformer 😀
 
Hi,

it won't sound good for many reasons, this is what comes to mind now:
- you have frequency shape/cuts in almost every stage;
- you have an eq that is almost never flat;
- you have a nfb circuit designed to cut lows;
- damping will be very low;
- OPT will be very small;
- PSU will be underdimensioned;
- Screens are designed to drop when pushed vs kept stable;
- etc...
 
I have plugged a tape deck back in the day or a phone more recently into guitar amps that had an aux input that bypassed some of the guitar stuff like overdrive and reverb. It sounds OK for what is essentially a big mid-range speaker, much better than running through the guitar input. So you essentially have half a stereo with no tweeter and no bass speaker. Not exactly a hi-fi setup.