Mark Levinson door speaker and subwoofer upgrade

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Joined
Dec 30, 2024
Threads
5
Messages
159
Location
Los Angeles
I have replaced the rear subwoofer and all 4 door speakers on my 05 LX and could not be happier. It did take some trial and error and gathering some info from multiple threads on here. Figured I would write up my experience in case others are looking to do the same. I chose to not re-foam my speakers as I felt that the existing speakers were very old and the sound quality could be improved upon.
I am by no means an audio installation expert, but my setup has been working just fine for some time now and the sound quality has vastly improved.
The subwoofer was done over a year ago
I installed one set of door speakers a few months back but did not like the sound quality at all. They were mid range speakers but I felt they were too bright and not enough low bass. They sounded like clock radio speakers (flat and neutral) so I went back and searched for other options.
Below is what I ended up with:

All speakers are rated at 8 ohms
  • Subwoofer is from SKAR Audio you have to wire it in sequence for it to become 8 ohms. It bolted right into the enclosure with some minimum modifications. There are some ribs inside the sub enclosure and you can literally use a plier to twist / break the off. I used a file to get to some areas. A rotary tool would do the trick much quicker and cleaner.
  • I felt the factory sub cover was rubbing on the sub itself so I removed it and ordered a custom made sub cover from Ben 3D. The cover was made for a previous customer of his so I just asked him to make another for me.
Link to the sub
Link to the video I used to install the sub

Finished product
IMG_0550.webp


  • For the front doors, as mentioned I had purchased some SKAR audio 6.5" Mid-range loudspeakers but I was not happy with the sound quality at all. so I decided to buy some woofers that have a lower frequency and to my delight it worked like a charm. Turns out the mid range speaker already in the door and the tweeter was enough to play the mids and highs.
  • Below are the speakers I bought. They bolted right up and just put some new connectors in.

  • For the rears, I had ordered a set of visaton 4" full range speakers and again they were just too bright and not enough lows came through, so back to the drawing board I ended up with the below woofers. They sound really good and can crank up the volume with no distortion and a well rounded sound. The improvement is just miles ahead of where I started and vastly better than the first go around of speakers. A little trial and error but it was well worth it. I hope this thread is helpful for anyone looking to replace the speakers and rear sub.
Rear woofers

IMG_4574.webp
 
where do I get the cover for the subwoofer? I can't find that trim part number anywhere. Mine just has a storage compartment there

Also is yours on the right side of the car or the left side?

edit:
nvm yours in an 05, mine probably never had a sub options
 
Last edited:
where do I get the cover for the subwoofer? I can't find that trim part number anywhere. Mine just has a storage compartment there

Also is yours on the right side of the car or the left side?

edit:
nvm yours in an 05, mine probably never had a sub options

Ben3DBuild is on here you can hit him up, or he is pretty responsive on IG
The sub is on the left side.
 
Ben3DBuild is on here you can hit him up, or he is pretty responsive on IG
The sub is on the left side.
Did the 4 inch speakers fit without extra brackets? i think mine has 6.5" speakers in the rear doors

my speaker setup is probably quite different than yours though

front doors -> tweeters and 6.5" speakers
rear doors -> just 6.5" speakers (i think)
third row -> no speakers
cargo area left side -> nothing
 
Yeah I just finished checking, all my speakers are 6.5". Aftermarket, alpine, super old.

My LC has no amp at all so obviously no sub. I've been digging into installing a new sound system but the wiring is confusing. Do these older model year 100 series run the wiring back to the bottom of the passenger's seat even if there is no amp?

Crutchfield is about to run a sale next month, I'm thinking of this setup:
RadioAlpine iLX-507
Front speakers + tweeters and crossoversAudiofrog G60S 6.5" component set
Rear speakersKicker KS 51KSC6504 6.5" coaxials
SubwoofersKicker CompRT 48CWRT672 6.75" x2
Amp??Alpine S2-A55V: 300W
Rockford R2-750X5: 350W
Kicker CXA660.5: 300W
JL JD700/5: 300W
Kenwood X803-5: 500W

I am super torn on the amp. The Alpine and kicker are my top choices but they are way too big to go under the seat, and I'm not sure where else I would mount it. I don't know the size specs on the factory amp but the kenwood is the only one that I'm certain would fit under the seat, but 500w is also big overkill for what I need

I'm also curious if this is the speaker box that you guys have mouted behind that trim panel?:

Wondering if i could just throw together something on my own..but not really sure yet until I pull the panel off of mine
 
Yeah I just finished checking, all my speakers are 6.5". Aftermarket, alpine, super old.

My LC has no amp at all so obviously no sub. I've been digging into installing a new sound system but the wiring is confusing. Do these older model year 100 series run the wiring back to the bottom of the passenger's seat even if there is no amp?

Crutchfield is about to run a sale next month, I'm thinking of this setup:
RadioAlpine iLX-507
Front speakers + tweeters and crossoversAudiofrog G60S 6.5" component set
Rear speakersKicker KS 51KSC6504 6.5" coaxials
SubwoofersKicker CompRT 48CWRT672 6.75" x2
Amp??Alpine S2-A55V: 300W
Rockford R2-750X5: 350W
Kicker CXA660.5: 300W
JL JD700/5: 300W
Kenwood X803-5: 500W

I am super torn on the amp. The Alpine and kicker are my top choices but they are way too big to go under the seat, and I'm not sure where else I would mount it. I don't know the size specs on the factory amp but the kenwood is the only one that I'm certain would fit under the seat, but 500w is also big overkill for what I need

I'm also curious if this is the speaker box that you guys have mouted behind that trim panel?:

Wondering if i could just throw together something on my own..but not really sure yet until I pull the panel off of mine

Consider yourself lucky if you have no amp, that just opens the options for you right up. Those of us with the ML system are bound to the 8ohm speakers and the ML enclosures
 
Consider yourself lucky if you have no amp, that just opens the options for you right up. Those of us with the ML system are bound to the 8ohm speakers and the ML enclosures

Well, I still have a lot to consider and figure out, like the wiring and the sub mounting options. With your trim panel off did it look like this behind it?

1787504732429.webp


edit:
nvm i never watched the video you shared until now. Yours uses one large sub but these are 2 smaller ones. no clue what size those are
 
Last edited:
Consider yourself lucky if you have no amp, that just opens the options for you right up. Those of us with the ML system are bound to the 8ohm speakers and the ML enclosures

ok well turns out I do have an amp from factory, but definitely no sub

3196.webp
3195.webp


It's under the driver's seat.

Why are my options limited? Can't just replace this amp?
 
Well, I still have a lot to consider and figure out, like the wiring and the sub mounting options. With your trim panel off did it look like this behind it?

View attachment 4199895

edit:
nvm i never watched the video you shared until now. Yours uses one large sub but these are 2 smaller ones. no clue what size those are
You can convert the enclosure to fit a 6.5” subwoofer yourselves or buy a kit, this gives you an idea
 
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