Rear speaker install

[Watcon26]

I’m trying to upgrade my stereo on my 97 boxster it has front & door speakers. I purchased a used rear speaker, kenwood double din head unit with wire harness and trying to use the stock amp I’ve read on the forum that I can upgrade the stock amp from a 4x40 to a 6x40 to power the rear speaker but need help understanding the difference between the 99664531300 & 9964532300. Can someone explain the difference so I can buy the correct unit? 

[lkchris]

I recommend the unit with 323 in part number.

 

Not sure about the other one, but do know 996 6X40 amps come in coupe and cabrio versions and you want a cabrio version, which 323 is.

 

You'll be pleasantly surprised by improved door speaker (woofer) performance with this amp.

 

There are older posts in this forum that will describe the wiring modifications required.  Note that this is just amp-out wiring.  The amp-in wiring from radio is already all there, no changes required. 

 

See

 

Edited December 22, 2021 by lkchris

[Watcon26]

Thanks I purchased one of those 6 channel amps you have in the post. I have the new head unit installed using the existing amp right now. It’s working but when I check the fader both the doors & dash speakers are playing thru the rear. How do I connect the 6 channel amp so the fader will work dash, doors & rear 

[Watcon26]

Also the 6 channel I got has the cut off harnesses connected to it can I use it?

[lkchris]

Your door speakers are woofers, so fading them either front or rear is meaningless.