RAM 150 crossover questions

Discussion in 'DIY Discussion' started by Moonunit2004, Jan 21, 2023.

  1. Moonunit2004

    Moonunit2004

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    Hello all, I need some advice form you all. I have a pair of RAM 150 speakers which are working but don't think to their full potential. I would like to start by replacing the capacitors, preferably using similar components. I need 16 MFD 50v, 5 MFD 50v and what looks like 4.7 low loss 50v. I can't find any exact but Falcon have alcaps in correct MFD but are all low loss. Would they be suitable? Or do you have any recommendations. I have attached some images which show the crossover. Another thing is the resistor is 3.3 ohm but not sure of the wattage .. thanks in advance 20230111_221907.jpg 20230111_221911.jpg 20230111_221907.jpg 20230111_221911.jpg
     

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    Moonunit2004, Jan 21, 2023
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  2. Moonunit2004

    Sergeauckland

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    The resistor looks like 5 watts rating. It will do no harm at all to go higher, as long as it fits the board. I wouldn't go any lower than 5W as it'll overheat.

    As to the capacitors, I wouldn't worry too much if they're all low loss, as a simple crossover as you have won't be that critical. The important thing is for them to be non polar electrolytics, not polyester or other non electrolytics as these are physically much larger, much more expensive, and have different electrical properties.

    S
     
    Sergeauckland, Jan 22, 2023
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  3. Moonunit2004

    Moonunit2004

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    Thanks very much for your help and expertise.
     
    Moonunit2004, Jan 22, 2023
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