Update - Ive been busy!
I got my tube for the amp project in the mail yesterday - a GS-35b. It is a bit bigger than I expected and it is really heavy. Its one thing to look at dimensions and plans, but when you actually hold it in your hands its a bit different HI. This thing dwarfs an 8877 (although, the 8877 is a better/more powerful tube).
The speaker box is not done yet. I have the majority of the wiring/electronics done, but it still needs some more work. The panel is in the works. This cardboard mock-up is nice because I can play with the location of all the controls. I put all but the filter controls on and then soldered the wires in place. That way I knew how much wire I needed for them. I added just a bit of length to a few of them for some room to play. The volume control (brass in the middle) will need to move a bit as the knob for that is a lot bigger. The pots with the knobs on them are for the filter, those are just the ones that came with it for now. All of the knobs I will use are machined out of aluminum.
There is a TON of wiring on this thing.
I modified my original plan. I was originally going to have 4 mono/2 stereo inputs with the monos configured (for the rigs) to where I could route all to both speakers or any combination of the 4 to one speaker for dual monitoring. When I got in to the wiring it was a lot more complicated than I originally had planned because the filter unit needs to also be switched in on any of those 4 mono inputs. Long story short, I changed it to 6 mono inputs individually selectable/filterable. There are also 3 stereo channels now also - one on the front panel.
Things left to do - finnish the mock-up of the front panel, do the rear panel, build my VU input meter, finnish the knobs, mount the circuit boards, and once the panel designs are done work on the printing for the metal plates.
The speaker box is not done yet. I have the majority of the wiring/electronics done, but it still needs some more work. The panel is in the works. This cardboard mock-up is nice because I can play with the location of all the controls. I put all but the filter controls on and then soldered the wires in place. That way I knew how much wire I needed for them. I added just a bit of length to a few of them for some room to play. The volume control (brass in the middle) will need to move a bit as the knob for that is a lot bigger. The pots with the knobs on them are for the filter, those are just the ones that came with it for now. All of the knobs I will use are machined out of aluminum.
There is a TON of wiring on this thing.
I modified my original plan. I was originally going to have 4 mono/2 stereo inputs with the monos configured (for the rigs) to where I could route all to both speakers or any combination of the 4 to one speaker for dual monitoring. When I got in to the wiring it was a lot more complicated than I originally had planned because the filter unit needs to also be switched in on any of those 4 mono inputs. Long story short, I changed it to 6 mono inputs individually selectable/filterable. There are also 3 stereo channels now also - one on the front panel.
Things left to do - finnish the mock-up of the front panel, do the rear panel, build my VU input meter, finnish the knobs, mount the circuit boards, and once the panel designs are done work on the printing for the metal plates.
posted by Steve at
9:06 PM
1 Comments
