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Pinout for 6x40 M490 amp


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I haven't seen him around in a while. He used to also sell high quality Porsche Door Sills as well. What exactly are you looking for? I may be able to help.

I'm amazingly confused with my car. It's a '99 996, CR-220 and M490 is on the option tag.

Unfortunately the previous owner took out the original amp and possibly some other items I'm unaware of. I'm trying to get the car back to OEM but with an aftermarket head unit.

Why are there two different amps labeled as M490? One says 4x40 and the other says 4x60. Will either work? Is there a way to tell which my car originally came with?

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I haven't seen him around in a while. He used to also sell high quality Porsche Door Sills as well. What exactly are you looking for? I may be able to help.

I'm amazingly confused with my car. It's a '99 996, CR-220 and M490 is on the option tag.

Unfortunately the previous owner took out the original amp and possibly some other items I'm unaware of. I'm trying to get the car back to OEM but with an aftermarket head unit.

Why are there two different amps labeled as M490? One says 4x40 and the other says 4x60. Will either work? Is there a way to tell which my car originally came with?

 

 

 

 

No, they are 4X40 and 6X40.

 

Boxsters typically arrive with 4X40, the four channels driving 2 dash speakers and 2 subwoofers in door.

 

996 cars have similar amps but 6X40, the six channels driving 2 dash speakers, 2 subwoofers in door, and 2 rear area speakers.

 

"Channel" means left or right.  40 watts per channel

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  • 1 month later...

Question asked above but not answered ...

What is the difference between M490 6X40 amps for 996 coupe and same for 996 cabriolet?

Would love to know as well. I installed a cabriolet M490 amp in my coupe and all works well aside from having to slightly modify the female connector.

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  • 5 weeks later...

Question asked above but not answered ...

What is the difference between M490 6X40 amps for 996 coupe and same for 996 cabriolet?

Well, here's some information.

 

The first 996 amp I purchased was 996 645 311 00, an amp from and for a 996 coupe.

 

Since I don't believe in random coincidence and noting that the original amp in in the Boxster is 986 645 323 00, I purchased a second 996 amp, 996 645 323 00, labeled for 996 Cabrio.

 

Just don't think "323" is a random coincidence and instead describes amps for open/soft top cars.

 

Anyway got it installed and immediately noticed a difference.  More volume from the rears and more bass overall.

 

Yes, it's a comparison of just two used amps, and maybe three minutes listening--not necessarily conclusive and have no other data from Porsche other than my "323" assumption.

 

But, I'd just recommend searching for the 996 Cabrio amp when converting your Boxster to have rear speakers.

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  • 8 years later...

I’ve completed this mod with help from this thread and will relate that 996/911 6x40 amps are available in both coupe and cabrio versions.  I’ve tried both and will report the cabrio version is preferable.  In fact it’s amazing, as the original 4x40 amp must have been a poor spec, as with the cabrio 6x40 my original door woofers have come alive, performing much better with more volume than previously.  6x40 amp I have has 323 in part number.

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