the rca cable that connects my stereo to the amp has two prongs on each side (red and white). i have both prongs connected to the stereo but on the other end of the cable the red one is broken. so i only have white one connected to the amp. i was thinking about using a y adapter (one female and two males ) to connect it to my amp. do u think i should do that or just install a new cable. would i loose some sound quality if i use the y adapter. or it doesn't make any difference. the amp is mono and only one sub.
Even though the amp is mono, the signal going into the amp is stereo. The signal going out from your stereo to the amp is probably somewhere between .5 volts and 2.2 volts (unless you have a high voltage pre-outs from your stereo), so if you only use one side of the RCA, you will notice a difference in both volume and bass quality because you are essentially cutting out half of the signal voltage. The amp takes both stereo channels, combines them into one, amplifies them and sends the signal out to the sub. If I were you, I would definitely replace the cable, they are relatively cheap and you'll be glad you did in the long run.
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