04-12-2019, 12:42 PM
Thank you Ron. I figured it was here somewhere, just have to use the right keyword ("alignment" doesn't work). Your set of instructions are much better than the basic ones I found elsewhere.
So, I have had a change in direction on the speaker. Instead of the re-cone job the owner has decided to go with a PM speaker mounted in place of the cone. I have located an 8 ohm, 8 inch, full range driver to connect to an output transformer. To check this configuration, I used my test speaker connected to a universal OT and tested the output of each of the 6 transformer speaker lugs. The output is now so loud I can't turn it down with the volume control. The set also oscillates at various positions of the dial. I'm thinking there's too much gain and maybe reducing the B+ might fix that. The 10K volume pot. also might be a problem. More testing to resume.
So, I have had a change in direction on the speaker. Instead of the re-cone job the owner has decided to go with a PM speaker mounted in place of the cone. I have located an 8 ohm, 8 inch, full range driver to connect to an output transformer. To check this configuration, I used my test speaker connected to a universal OT and tested the output of each of the 6 transformer speaker lugs. The output is now so loud I can't turn it down with the volume control. The set also oscillates at various positions of the dial. I'm thinking there's too much gain and maybe reducing the B+ might fix that. The 10K volume pot. also might be a problem. More testing to resume.
