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The transformers are by Heyboer, which are meant to be great. They have really great writing on the packaging.
After a couple of hours of reading and checking I set about on the chassis, between bouts of fishing the other cat out of the cabinet.... All very straightforward so far. Tomorrow I'll start soldering
Yeah, I'll need to be very careful who is wandering around once I start getting high voltages involved!
First I populated the chassis.
Then wired up the heater wiring. Straightforward so far...
Power transformer in and wired. Some slight confusion when I forgot the instructions were written primarily for 110V and I needed to use the 240V colour code, which was on the next page. But all good and sorted *before* I powered anything on.
Quick test of that wiring to confirm the right voltages were getting to the right places. All good so far - no electrocutions and no fire!
I got there in the end..
Tidied-up board in-situ. You'll note I *still* forgot the main connection from the OT (red wire attached to the left-most filter cap at the bottom). That's been spliced onto the capacitor's leg, and should be robust enough, but I'm annoyed I didn't get it perfect first time.
Anyway, next up is the other half of the wiring, then testing.
I've already checked and rechecked the wiring as I've been going, but will do another careful once-over of everything before I switch the mains back on.
Speaker should be arriving tomorrow, so I'm hoping to get the soldering finished tonight, then tomorrow is testing and (hopefully) finishing the build without dying!
That's a lot of progress in one day!
*Edit: pics work fine on my PC running Windows 10.
Nil Satis Nisi Optimum
I'd never really read anything about all this stuff before this build, aside from a basic knowledge of what transformers do and how from A-level physics. It's actually all relatively simple in an amp this size, but there's still lots of different parts doing different things.
Are they broken for anyone else?
I get it, thanks
I've had a copy next to me on an iPad, crossing out each stage as I go, and marking off the components and solder joints on the major diagrams to keep myself clear on what has been done and what hasn't. I don't *think* I've missed anything yet.
http://www.trinityamps.com/docs/TweedBuildersGuide32.pdf
Looks like a solid job so far mate. One piece of advice.. don't rush to get it over the finish line
I really enjoyed building mine and I'm still living to tell the tale - if I can do it, anyone with a brain, some basic skills and a quality work ethic can do the same.
Can wait to hear it (I just broke the piece of advice above already!)
Si
I didn't do any last night as it happens, as I felt a bit shit. Still not feeling great but the speaker should be delivered within the hour, so it'd be nice to get sound out of it today if possible. I actually have very little wiring left at this point, but I need to test properly before I give it any beans!
Speaking of which, what's the best way to test? Dummy load in the form of appropriate ohm & wattage resistors, or just a speaker with the volumes turned down? @ICBM?
Im reading this thread with much interest, as I have a Tweedle-Dee Modulus kit waiting to be started. And, like you, I'd rather not fry myself in the process!
Adam
I do need to crack on a fair bit, as both MrsF and I would quite like to reclaim the kitchen table at some point...!