Mine has the HK system. I can see the green labeled amp under the drivers seat. Says it right on it

 

The H/K system was labeled Harmon Kardon on the upper front door speakers. I don't believe it was available on any 2001 models. It was then called the "High Line" system that year. That's what is in my 2001.

 

That explains it Jim. Crutchfield I think has it listed as High Line, I assumed that meant HK and I was wrong. (edit) just checked again it does have either base or HK as a choice
Maybe the Crutchfield guys don't know what they are talking about but he assured me that the Discovery they took measurements from was a 2001 with HK.

 

Although I've never heard a real H/K system in a disco, I think they had similar speakers, but a much better amp and subwoofer that actually worked. My rear cargo door only puts out some deep hum's and doesn't really do much.

 

X1 ............ agree, HK on the underseat amp and on the front door speakers.

 

From all I've seen in the early DII's I've handled, the three main systems you see, in 1999-2002 DII's are as follows,

1) Base system. Self powered head unit. No subwoofers. Usually found on SD models.
2) Phillips system. Amplifier under the drivers seat. Woofer, mids in front doors, tweeters on A pillars. Tweeters and woofers on rear doors. Subwoofer on the tailgate. No ID on any of the grilles. Speakers say Phillips, subwoofer says Phillips.
3) Harman Kardon system. Amplifier under the driver's seat. Woofers and mids in the front doors with tweeters in the A pillars. The mids have gold lettering identifying the speakers as Harman Kardon. Tweeters and woofers on the rear doors without any visible ID. Subwoofer on the tailgate door again with no visible ID's. All speakers clearly labeled as Harman Kardon. Subwoofer has green Harman Kardon label.

All head units look identical from the outside. The head unit that is self powered has small heat sinks on the back of the unit. The head units that are for the HK and Phillips systems use three multi-pin, multi-colored plugs for connecting the system. The self powered unit has two multi-pin connectors.

All speaker grilles, with the exception of the mid tweeters in the front door cards of HK systems have no identifying marks. You cannot tell the manufacturer of the speaker until you remove the door cards and look at the back or sides of the speaker. If you remove the grille on the subwoofer assembly you may be able to discern the color of the label on the plastic housing for the speaker. If it's a green label it's HK. If it's blue or white it's Phillips.

I hope this helps people trying to decipher their audio systems.

 

YAY! for #2!!!
Wonder what kind of power the Phillips system produces? The sub is really useless. That is unless I just want to rattle the license plate surround.
Any input anyone on difficulty replacing the amp under the seat?
Thanks Paul.

 

To replace the amp, the easiest thing to do is pull the seat. It's only held in place with 4 large male torx bolts (#45 IIRC). The trickiest bolt is the one on the left rear. There is a 17mm nut that secures the Torx bolt so you need to hold that nut while releasing the bolt. With the seat out of the way you'll see the amp and everything is really pretty self-evident.

As far as the subwoofers go, it's been my experience that the Phillips lasts longer than the HK. The gaskets on the HK speakers disintegrate making the subs worthless. If you're Phillips sub is still working but you think it's too booming, lower its output at the head unit. Subwoofers, in proper settings, should call little or no attention to their performance. They should simply serve to subtly augment the systems performance at the lowest frequencies.

 

Has anyone here upgraded the Phillips or HK amp/speakers/woofer and kept the head unit? If so, what did you get?

 

The head unit is what you want to replace more than anything. That's what I did. I have Phillips.
Replace with something that has a quality equalizer so you can set your sound properly. It sounds great once adjusted.
But now my amp is dying.ugg