1

I'm thinking about getting the Pioneer AVH-X5800BHS headunit for my 2005 Honda Pilot EX but I want to keep costs as low as possible, so can I use the stock subwoofer by tapping into the Sub+ and Sub- wires with some PosiTap connectors or will I have to buy a separate powered subwoofer. Is there an amplifier built in to the car or does the stock headunit amplify the signal inside the unit? I have heard that the subwoofer is 50W. I tried researching this but I got many mixed answers.

1

The AVH-X5800BHS has a 70 watt channel dedicated to a subwoofer. This is good into 2 ohms, so this should work very well on your Honda Pilot.

AVH-X5800BHS Specifications

Refer to page 54 for wiring information for a subwoofer. Note that wiring depends on speaker impedance, so in your case you should see if the magnet is labeled, or measure DC resistance with a meter.

If you are unsure about the wiring, you should google or go to Crutchfield to locate a specific harness adapter for your head unit and specific vehicle. This will not only save a lot of time, it leaves the OEM stock harness intact, in case you ever change again or even change back to stock for resale.

  • So, to clarify I can just breakout the RCA jack and connect it up directly to the sub + and - pins with the positap connectors? – p7810456 Aug 16 '16 at 5:03
  • @p7810456 No, not at all. The RCA jacks are for an external amplifier. I beleive your new head unit has a amp channel for a subwoofer already. – SteveRacer Aug 16 '16 at 13:31
  • Resistance and impedance are different. The reading you get with a meter will not accurately represent the impedance of the speaker when a signal is running through it. It's best to look up the specs if you're concerned, but you will rarely if ever see a speaker impedance below 2 ohms, so I wouldn't worry about it. – Lathejockey81 Aug 16 '16 at 16:00
  • @Lathejockey81 agreed, but OEM specs are hard to find if it's not printed on the magnet. A DVOM reading will get you close enough to decide how to wire this installation. I wasn't concerned of going below 2 ohms, the amplifier section has two finals taps depending on whether the subwoofer is 2 ohm or 4 ohm and higher. – SteveRacer Aug 16 '16 at 16:11
  • @SteveRacer so on the harness for the radio there will be a sub + and - that I could directly PosiTap onto the car's sub + and -? – p7810456 Aug 16 '16 at 16:23

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.