Hi Joey,
Regarding the crossover caps. Ami / Rowe used those motor start types a lot around that time, and I believe it's because they were available in the values needed and for no other reason. You can happily replace with a 22uf standard np electrolytic, which will be about a tenth of the size.
I read, but wasn't born then so don't take my word for it, that caps were much bigger then and have reduced in size due to technology. Ignore the motor start bit completely.
Nigel, uk
On 9 Feb 2024 at 14:33, joeymcd via Jukebox-list jukebox-list@lists.netlojix.com wrote:
Looking at freshening up a few AMI F and G crossovers I have. AMI F manual page 17 of the sound section shows the schematic and parts. Both capacitors are the same rated the same. The original capacitor is labeled Dry Electrolytic Motor Starting Capacitor 18-22 MFD 115 VAC 60 Cycles and is quite large.
Why would AMI use this? Can something like this be used?
[ https://www.solen.ca/en/products/dmpc-20 | https://www.solen.ca/en/products/dmpc-20 ]
Second is the resistors used to attenuate. One is 18 ohm 4 watt and the other is 33 ohm 4 watt spec given on the parts list. Is resistor type and wattage a factor here? Can this be used? These are exact ohm rating but 10 watt.
https://www.solen.ca/en/products/solen-cement-type-wirewound-resistors-wwsqp... [ https://www.solen.ca/en/products/solen-cement-type-wirewound-resistors-wwsqp... | https://www.solen.ca/en/products/solen-cement-type-wirewound-resistors-wwsqp... ]
Thanks. Joey McDonald
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