How to Convert a Subwoofer Speaker Wire to Pre-Out

Written by nichole liandi
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How to Convert a Subwoofer Speaker Wire to Pre-Out
Change your speaker wires to RCA preout plugs for quick changes. (rca image by serge simo from Fotolia.com)

The usual means of hooking up a car subwoofer to an amplifier is to use speaker wire connected between the terminals of the amplifier and the terminals of the subwoofer. If you want a faster way to connect and disconnect the subwoofer to the amplifier, modify these regular speaker wire connections to use standard pre-out connections, usually referred to as RCA connections. With an inline female RCA plug on the wire coming from the amplifier, and a male RCA plug on the wire leading to the subwoofer, connect and disconnect the sub from the amp in only a few seconds.

Skill level:
Moderately Easy

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Things you need

  • Wire cutters
  • Wire stippers
  • In-line male RCA plug
  • Soldering iron
  • Rosin core solder
  • In-line female RCA plug

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Instructions

  1. 1

    Cut the speaker wire leading from your amplifier to the subwoofer, about 6 inches from the subwoofer.

  2. 2

    Make a small cut with your wire cutters to separate the two leads of the speaker wire and pull the leads apart a distance of about 2 inches.

  3. 3

    Slide the leads into your wire strippers and remove 1/2 inch of insulation from the ends of both leads.

  4. 4

    Identify the positive leads--they will be colour-coded red or marked with "+" marks.

  5. 5

    Solder the positive lead of the wire leading to the subwoofer to the centre pin of the male RCA jack. First touch the wire to the pin, then apply the tip of the soldering iron until the joint is hot. Touch the solder to the joint and let it flow into the joint. Remove the soldering iron and let the joint cool.

  6. 6

    Solder the negative lead of the wire leading to the subwoofer to the outer tab of the male RCA plug. Use the same technique as described above.

  7. 7

    Solder the positive lead of the wire leading to the amplifier to the longer tab of the female RCA jack. Use the same technique as described above.

  8. 8

    Solder the negative lead of the wire leading to the amplifier to the shorter tab of the female RCA jack. Use the same technique as described above.

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