RCA issue

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obv_ius

CarAudio.com Newbie
I have a 5 speaker system ready to install and my after market head unit only has front and rear channels. I have a single 12” sub and my amp has rca inputs for the sub. I want to use a “y” rca splitter until i buy a head unit with all the rca outs i need. So which speaker should I split from and how? How would i need to connect the rca “y” cable to the amp? Would both make rca go into the left and right sub even though it’s a single sub? Would i need multiple splitters? If someone could explain or draw it out it’d be a big help.
 
I have a 5 speaker system ready to install and my after market head unit only has front and rear channels. I have a single 12” sub and my amp has rca inputs for the sub. I want to use a “y” rca splitter until i buy a head unit with all the rca outs i need. So which speaker should I split from and how? How would i need to connect the rca “y” cable to the amp? Would both make rca go into the left and right sub even though it’s a single sub? Would i need multiple splitters? If someone could explain or draw it out it’d be a big help.
I would go for the rear personally, but it doesn't really matter so long as you don't intend to mess with the fader/balance. You'll be using both left and right split into the rear and subwoofer amp so the mono mixer can do its thing and prevent side to side fades in songs from goofing up your bass. Songs only have 2 channels so you don't have to worry about front to back fades.

To simplify it a bit, you'll have 4 RCAs out the back of your unit, 2 going to the front speaker amp, and the rear preouts going RCA > RCA y-splitter. From there one left and one right goes to the 2 rear speaker amp and one left and one right goes to the mono subwoofer amp. You'll need 2 splitters either two 1x male to 2x female (then another rca cable) or two 1x male to 2x male if the amps are close to each other.

Some amps have preamp outputs that are just shorted to the rca inputs so you wouldn't need a y-splitter but they work the same. Still, if any of your amps have one of those I would go ahead and use them since they're better shielded on the inside of the amp than what's likely to be a cheapo y-splitter. Some amps also have 2-channel mode vs 4-channel mode which means you only need one set of RCAs to power all 4 outputs etc. If you need more help from here I'll need to know what equipment you're using.
 
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