I am currently working on an AMI model I and although I’ve worked on a few of these I never really tried to figure out the crossover since the jukes always sounded amazing. I have one here that was missing the crossover and speakers but had an old RCA full range speaker connected directly to the amplifier. Surprisingly it sounded great! I have now found and installed the correct crossover and a 12” speaker from the model J, which has the same part number. I purchased a horn speaker “ for Model H-I” from eBay but received a piezo aftermarket horn speaker. Which I am going to replace! But I wanted to see how it would sound and it’s not good. What I don’t understand is the simple crossover design. The 3mF capacitor (which is now new) goes between the input and the 12” Low frequency speaker? Does this not block some of the low end frequencies going to the 12” speaker? From input to the tweeter there is a 15 ohm resistor and from input to the black/common connection there is a 33 ohm resistor. This makes little sense to me and would have thought this is wrong but I’ve looked at others that sound great and this set up is correct. Is there anyone that could enlighten me as to why it’s designed like this? I always thought the capacitor should be connected to the high frequency speaker. (I really miss Jim Alexander, he would be all over this) Thanks,
Mauro
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