Silly question but....using WRX under-seat sub in the BRZ?

[Chauntalei]

My buddy is in the process of upgrading his audio system in his 2013 WRX.

He was trying to decide what to do with his current factory under-seat sub, and offered it to me for my BRZ.

Can it be hooked up to the stock BRZ HU, either with the factory harness or by doing a little work to it?

Apologies if this has been asked before, I did a search and couldn't find anything.

[westendRIOT]

would it even fit? I have to pump my seat up just to fit my hand under there

[Chauntalei]

I'd be willing to relocate it a little, have it right up against the footwell in the back seat, I'm just more curious if I can wire it into the HU without needing to do anything fancy.

[sshole]

The factory under seat subwoofer has a T-harness that splits the signal from the headunit down to under the seat. If your friend still has the entire T-harness, make sure he gives that to you so you can do the next part: cut off the headunit side of the plug. It likely won't fit the stock headunit plug. Then you get to figure out which wire goes to L/R speaker +, L/R speaker -, 12V power, and ground. Find the corresponding outputs for these connections from your headunit harness and use a vampire tap or something like ae64's headunit wiring harness.

The subwoofer, which is actually just a 6.5" woofer with a high-pass filter, isn't all that great. I had one in my old car and it was terrible. Got rid of it for a real subwoofer about a week later (that's how long it took me to collect parts).

[XanRules]

For the amount of time and effort it would take to make it fit you could just install a decent trunk setup.

[Chauntalei]

Thanks for the responses. The main reason I was thinking about it is because it'll be free. I'm really not interested in spending money on anything audio related at the moment, but if I can do anything to improve the stock sound for cheap (read: nothing), I figure I should at least look into it.