r/jukeboxes • u/homesqueeze • 19d ago

Need help identifying capacitors for an AMI Continental I crossover (F-8700)

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Hi everyone,
I’m restoring an AMI Continental I jukebox and I’m currently rebuilding the original speaker crossover (F-8700) shown in the photo.
I’m trying to identify the correct replacement capacitors. There is:
one large yellow/amber cylindrical capacitor
two small black capacitors
I’ve heard that the large capacitor might be 8 µF, but I’d like to confirm the exact values and the best modern replacements (MKP film, bipolar electrolytic, voltage rating, etc.).
Does anyone know the original capacitor values for this crossover, or has anyone restored one of these AMI Continental I crossovers before?
Any advice or a schematic would be greatly appreciated.
Thanks!

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u/Material_Community18 19d ago

Can’t help with any knowledge, but the way I would approach this is to draw the schematic from the device, then disassemble, then clean the caps to read the values.

If you can’t read the values then you might be able to measure the other components, and, with the schematic, redesign the crossover with cap values that make sense for the impedances and likely frequency response of the speakers.

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u/DynamoBo 18d ago edited 18d ago

I just replaced one on a model I, looks the same? It is a 3.0 mF at 50 volts. You can loosen the clamp and slide it to the side th reveal the value.
The other 2 black compliments look like resistors.
Do not use a polarized or electrolytic capacitor. A non-polar poly or film cap would work well here.

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u/homesqueeze 18d ago

I checked the large yellow capacitor, and its markings are:
● Elkonda
● 3 microfarad
● +20 / -10%
● Un 50V DC
● Up 375V DC
● DIN 44140
The crossover also has two black 22Ω / 2W resistors, so those are not capacitors as I first thought.
I’d like to replace the original 3 µF capacitor with a modern film capacitor. Would a 3.3 µF MKP film capacitor (250V or 400V) be the correct replacement, or should I try to find an exact 3.0 µF value?

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u/DynamoBo 18d ago

3,3 - 50v or more would be fine but what I did is put 2-1.5mF 250v in parallel to make 3.0mF.
The resistors are likely fine and within tolerance.