I'm simply rebuilding 40 year old crossovers. The old caps are 19uf and 7.5uf. I am having troubles finding many 19uf cap options. So calling the original company, I was told in could simply use a 20uf. But I would PREFER using Jantzen Superior Z Caps ... and they do not make a 20. Here is my question ... Am I correct, that simply using two 10uf capacitors inline with each other WILL definitely affect the sound, when compared to simply using a single 20uf capacitor? Same brand and model, they still will sound differently. Please help an old and feeble memory.