They ain't loud but I love the sound of my Flea Jazz with vintage '64 pups...
Even through y little Orange Crus 20W combo I can get some lovely sounds, recently discovered 'We Care a Lot' 🙂
To be fair I think they are just screw holes.
I notice its has 'plate was lost' written on what I thought was the end of the neck, but looking closely the grain shows it's a through neck.
Well compared to my traces it does like like you have a lot of high frequency noise but I think that could be the mic/computer.
On the other hand the middle traces look a bit 'flat topped' on the higher peaks which would sound like the mild distortion/odd harmonics effect you are getting. So this could be the issue.
As only on half a cycle, this could be an offset bias, a failing power supply capacitor or another component on the way out. Next step get someone to take a proper look.
Ah well at least we've had some fun....
Probably getting clipped, mine does that I had to move the mic back.
When you go to the page a popup should appear asking for permission to access the mic, if you miss it and don't click yess it won't work.
So it was all a ploy...
Just for comparison:
My A string, neck pickup, tone rolled back:
D string, bridge pickup, tone on:
Both of my signals look 'smoother'; than yours:
A boot was originally a storage box on a horse-drawn carriagem, in contrast to a suitcase strapped on as an afterthought. 🙂
Just as a bonnet is more up-market headgear than a hood 🙂
I've got a fantastic little plastic jig for dowelling, I just use that straight off, no screws, when I work plywood these days.
Used them to make this box:
You're looking to get something like this, you may need to experiment with which note you use and thw volts/ division setting. Note the use of 'freeze display' to stop it dancing about:
Does it have a built in mic?
Try going that website and see what happens.
you just play into the mic and click the box to 'freeze' the waveform and take a screen grab.
Here's an idea.
Stick a microphone into your computer and use this to grab what the waveform looks like.
Use a good, clean signal like a E or A with the treble rolled off and finger-plucked at the middle to get as clean a signal as possible.
Then share a screen grab and we can see if the distortion is visible (it might not be).
I have pretty much got the first two pages (out of 4 1/2) of Joy Joy down now. I can play all the bits up to speed but working on fluencey and getting transitions between the sections better. Amazed how much faster I can play now than a week ago!
Looks like in your circuit it's TR10 that does the job (top centre). The heatsink compound on it does look a bit suspect. You could try gently poking it to see if it is in good contact with the heatsink.
This is your amp: https://el34world.com/charts/Schematics/files/Ashdown/Ashdown_apc033xa_schematic.pdf
Stiffness of board is proportional to tht cube of thickness so 18mm will be (best Hugh Cornwell voice - let me pause for reflection) over 3 times as stiff as 12mm board for 1 1/2 time the weight.