Kevin Wheeler Posted July 5, 2022 Report Share Posted July 5, 2022 I have three sets of AR4x and one set of AR4xa speakers Iam in the process of redoing. They need a lot of love. Inside they have some differences,even among sets. What is the best recommendation to replace the caps. I have not opened all of them up. Im on my second set.Some have a plastic rectangle, one has a silver can about the size of a c cell battery rated at 20uf 50 vnp. Send help. SOS. Quote Link to comment Share on other sites More sharing options...
DavidR Posted July 5, 2022 Report Share Posted July 5, 2022 Well you need to replace with the same value (i.e. uF, the capacitance; BUT voltage can be higher). I recommend you use Non-polar electrolytic (NPE) caps like were installed but you can use film caps. You may not like the sound of film especially the cheaper brands. You can add a small value film cap to the NPE for a bit more detail. I don't know of anyone still making a 20uF NPE cap. You could go with a 18Uf and add a 1.5uF film. Film are MORE expensive. https://www.partsconnexion.com/JANTZEN-88641.html https://www.partsconnexion.com/MUNDORF-70369.html Quote Link to comment Share on other sites More sharing options...
lARrybody Posted July 5, 2022 Report Share Posted July 5, 2022 Hello Kevin Wheeler and welcome to the Classic Speaker Pages Forum. I am half Wheeler, that being my mothers madden name. One of my sons is a Kevin and his son(my grandson) is also a Kevin. We are direct descendants of General Joe Wheeler who fought in the Civil and Spanish American Wars. General Joe is buried in Arlington. I am assuming that the plastic box you are referring to is the wax filled paper box with the 20uf capacitator and the inductor coil on top. I just disconnected mine and pushed it back enough to fit the new capacitator. Here is what my 4X rebuilt crossover looked like and a drawing that I made. If you could post some images of your speakers that would be good. Again Welcome. Quote Link to comment Share on other sites More sharing options...
DavidR Posted July 5, 2022 Report Share Posted July 5, 2022 You don't find the Dayton's have a lot of michrophony and white noise? I do. They get under my skin after about 1/2 hr of listening. Quote Link to comment Share on other sites More sharing options...
phung diep Posted October 17, 2022 Report Share Posted October 17, 2022 On 7/5/2022 at 8:08 PM, Kevin Wheeler said: I have three sets of AR4x and one set of AR4xa speakers Iam in the process of redoing. They need a lot of love. Inside they have some differences,even among sets. What is the best recommendation to replace the caps. I have not opened all of them up. Im on my second set.Some have a plastic rectangle, one has a silver can about the size of a c cell battery rated at 20uf 50 vnp. Send help. SOS. do you still keep those old capacitors? i am looking for them for my project, do you resell them? Quote Link to comment Share on other sites More sharing options...
JKent Posted October 17, 2022 Report Share Posted October 17, 2022 On 7/5/2022 at 9:08 AM, Kevin Wheeler said: I have three sets of AR4x and one set of AR4xa speakers Iam in the process of redoing. Wow On 7/5/2022 at 9:08 AM, Kevin Wheeler said: one has a silver can about the size of a c cell battery rated at 20uf 50 vnp. That can capacitor "may" be good. Check to see if it's a Sprague Compulytic. Also, see lARrybody's photo. He replaced the volume pot with an L-pad. Good idea. And please do post photos. Resize to about 100KB or so for best results. Kent Quote Link to comment Share on other sites More sharing options...
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