Sometimes a design which seems fine at first can later exhibit some marginal behavior. This exact issue recently reared its head with the design of the 6L6 “Spalted Alder” amplifier.
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The Next Amp
So I’ve been thinking about my next amplifier project. And I thought I had made up my mind. Then things changed… again.
Continue reading6L6 SE-UL Top plate installed
I got a chance to do a little work on the amp today. I managed to install the top plate on the spalted alder chassis, install the filter inductors for the power stages, connect the output transformer secondaries to the speaker terminals, and wire in the power transformer primary and indicator light.
Continue reading6L6 SE-UL Top Plate Wiring Complete
In the last few days I’ve managed to get most of the wiring on the 6L6 SE-UL top plate complete. This includes all the preposterously large power supply filter capacitors.
Continue reading6L6 SE-UL Power Stage Wiring
I got a little more done on the amp this afternoon. The grid and cathode circuits on both power stages are now wired and tied into the driver.
Continue reading6L6 SE-UL Driver
I’ve managed to make a little progress on the driver stage of the amplifier. And another project is coming along well.
Continue reading6L6 SE-UL Wiring Progress
This is just a quick post to let everyone know that I have made some progress on the subject amp’s wiring. Unfortunately, there is a complicating factor which is slowing me down.
Continue reading6L6 SE-UL Transformer Wiring
Today I took some time to install the signal ground bus and wire the transformers. But I also wanted to discuss a specific aspect of transformer wiring for the B+. I often get questions on this topic from people looking at the 6336 SET Amplifier. Let’s take a look.
Continue reading6L6 SE-UL Mechanical Assembly
The paint seemed to be good and hard this afternoon. So when I got a little free time, I decided to start assembly.
Continue reading6L6 SE-UL Gets Its First Wires
I’m still waiting for the top plate paint to harden. But that didn’t keep me from getting some wiring done on the chassis today.
Continue readingJumping the Gun
I know that I told myself I was going to give the paint on the 6L6 SE-UL top plate a week to harden before I started assembly. But then I thought “Hey there’s other assembly I could perform”. So that’s what I did.
Continue readingA Note on Aluminum Finish
A while back in this post, “6L6 SE-UL Primed for Progress“, I mentioned that I would no longer be painting the exposed bottom plates of projects which won’t be seen. What that statement actually meant was that I would be leaving the aluminum in a bare “as delivered” finish. Or maybe with just a little steel wool polishing. But I’m now modifying that stance slightly.
Continue reading6L6 SE-UL Chassis Is Ready
After many delays I have finally finished the 6L6 SE-UL chassis. The paint is still soft but I should get started mounting parts in a week or so, as soon and the paint hardens appropriately.
Continue readingSome day…
I suppose by now everyone is wondering what has happened to the 6L6 SE-UL amp project. Well, so am I. Kind of.
Continue readingAugust Starts Off Busy
Sorry for the lack of progress on the 6L6 SE-UL. I really wanted to get the chassis finished off this week but several factors have conspired to keep me from working on it.
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