[quartermilecamel]

I have 3 model 90 radios, 1 is fully restored, didnt come with the original mounting cardboard, but has some aluminum looking plate, 2nd one is my dual 45 tube 90 that I purchased a bare bones cabinet for, so yet again no original mounting cardboard to go from. 3rd philco 90 from ebay yet again not original speaker and (from another type radio backer). Id like to install the speaker in my cabinet but no clue how the speaker is attatched to the backer or how the backer is attatched to the cabinet. I really dont want to take apart my good canadian restored 90 just to see how they did it, while the front of it looks good, I cant tell how they attached the backer. Been searching sites and youtube and nothing to show how it goes together. Im not even to sure how thick the cardboard has to be or the screws used as mine are all hacked in.