I am using 4 speakers that have 16-gauge non-removable wire that I need to connect to my receiver which uses RCA plugs. I have been looking around for a 16-gauge to RCA adapter and have been unsuccessful. I have found a 24' phono plug with 18-gauge wire. This is what I need but its 18 not 16. Is there a problem with me connecting the two together? If so is there anything else I can buy that I don't know about to solve my problem? (Besides ditching my cheap speakers) Thanks for any help.