Serendipidously... a day with no assignments due, no work (and after a few months of it... no back pain!)
Straight out to the garage this morning... scribbled this down from a layout diag, sharpied, etched and assembled this Master Volume pcb for my SR build. Felt so good to actually do something with this project, that I forgot to double check my schematic with google.
The dual gang pot replaces the 220k grid leak resistors to act as a master volume. Added some parallel resistors between lug 1 and the wiper as per Rob Robinette's suggestions. Hope it works ok, kinda sucks modding things before getting it built stock but oh-wells... going to be mounted on the rear of the amp, away from the mains.
Good to know, I've built a couple of Voltage Scaling Modules (VRM/VVR) on 3x3 cm hobby boards but it would be nice if I could etch a board. Just found this on Jaycar's site - https://www.jaycar.co.nz/pcb-etching-kit/p/HG9990
I prefer the cleaner trace edges from toner-transfer, but it's a lot of effort. There may be better option for drawing than Sharpie, it's adequate but inconsistent in coverage. If you're thinking doing a run, (and feel like playing with some CAD) it's pretty cheap to get them fabricated ex China. Last time I did a small PCB run it was $30 for 10x delivered. There are minimum quantities etc
Cdog wrote:I prefer the cleaner trace edges from toner-transfer, but it's a lot of effort. There may be better option for drawing than Sharpie, it's adequate but inconsistent in coverage. If you're thinking doing a run, (and feel like playing with some CAD) it's pretty cheap to get them fabricated ex China. Last time I did a small PCB run it was $30 for 10x delivered. There are minimum quantities etc
Nothing wrong with sharpie for quick runs Better than using veroboard anyway.
So, is that low alcohol or no alcohol at all? mmmm, no alcohol, do you want to try it? Noooooooooo.
Been a long time coming due to personal issues But I have here a solid pine cab with dovetail joints, real tweed, 12" baffle and finished with bullseye shellac for a Mr. Timoes.
I set up to take pics of the back but I got distracted by a phone call lol...
I say this every time but the corners on this cab, are the best I've ever done! I used a scalpel this time instead of new stanley knife blade. And I tried a different tint to the shellac. I'm reet chuffed with this!
The handles are still currently in china somewhere.... _sigh_
So, is that low alcohol or no alcohol at all? mmmm, no alcohol, do you want to try it? Noooooooooo.
Ok have just built most of a theile cab for an ev speaker. I powered through it but I still have the back to do, grille, handles etc. Was just testing timing etc.
I reckon this is going to be awesome, if anyone is keen and can find an ev, I'm happy to start pumping these bad boys out!
Would kill all in a radius of 5 miles with a koc!!
So, is that low alcohol or no alcohol at all? mmmm, no alcohol, do you want to try it? Noooooooooo.
Bg wrote:Ok have just built most of a theile cab for an ev speaker. I powered through it but I still have the back to do, grille, handles etc. Was just testing timing etc.
I reckon this is going to be awesome, if anyone is keen and can find an ev, I'm happy to start pumping these bad boys out!
Would kill all in a radius of 5 miles with a koc!!
My KOC destroys boxes.
Slowy wrote:
That's the problem; everything rewarding is just such hard work. Regret takes much less effort.
I'm doing a poor man's repair on an old Celestion. Tissue paper and thinned PVA glue. The speaker is pretty destroyed, so it's worth a go at repairing it I reckon. If it's shit, I'll look at sending it off for a recone.
But I have here a solid pine cab with dovetail joints, real tweed, 12" baffle and finished with bullseye shellac for a Mr. Timoes.
