SL/R231: SL550 back speakers PROBLEM SOLVED!
I had been meaning to take it in and get the amp done for 2 years now, but never found a Saturday with so little to do that it rose to a priority. Made a few appointments here and there, but ended up cancelling them. Really in the end, I just couldn't come to accept a car where I would have to go to Best Buy to install a $150 amp just to get a $5000 premium sound system to actually operate all the speakers!! I just couldn't come to accept $400 oil changes, $1000 windshields, $2500 bumper covers, and other abusive dealership practices.
So I traded out of the car before the warranty ran down to the end. Even though I had intended to keep it "forever". Even though I still love love love the car and probably will never own another car I love more. I still traded out of it because I just couldn't find any way to accept MB and MB dealership practices as anything but toxic and I just can't bring myself to deal with them.
I won't ever own another MB again. And not even due any actual horror story with my own car. It's just the general principle of it all.
So goodbye guys. The AMG affair has been fun, but has also ended.




Last edited by Utopia Texas; Apr 15, 2019 at 08:59 AM.
I traded it for a Charcoal Trackhawk Jeep (with the tow package, red leather, premium audio, sunroof, and black wheels) which will be much more usable when on real estate errands (which is well over half my driving). Yeah it doesn't drive like the SL and I don't love it like the SL. But it is also 4WD, has *** kicking engine, handles really well for how big it is and will be my daily driver instead of a garage queen. AND THE JEEP STEREO IS AMAZING. It actually uses all 18 speakers.
Last edited by nycphotography; Apr 18, 2019 at 08:24 PM.
Last edited by Streamliner; Apr 15, 2019 at 11:21 AM.




The Best of Mercedes & AMG




As for me, I recently stopped wearing a watch after many decades of use; now I just check my phone for the time.




I am curious if there is a doc with the various settings.
Once back listening to music my sound options are now Bass, Treble, Balance/Fader, and Surround On/Off:
I did however see a lot of other settings in Engineering Mode I am quite curious about. "Map Horizon Data?
DS Side Seat Pad and Shoulder Pad "off"? PS Thickness, Side Seat Pad and Shoulder Pad "off"?
Clock View?
and Remote Control???
Last edited by eddieo45; Apr 17, 2019 at 07:22 AM. Reason: 'cuz I'm so dumb


I believe others have commented as I have that the newer model SLs (I believe around 2016 and on) do NOT allow the owner to access the "engineering menue" using the sequence you have found usable for your MY.
Anyway...question:
Those who have been able to access the Eng Menue with model yrs like yours have noted no real meaningful sound.
For all concerned who have a MY like yours do you find any meaningful sound coming from the rear speakers if you go full on to "fade rear" ? If so I understand a MB mechanic who has access to the Eng Menue with the newer MY cars could maybe help those who need some rear sound? Be great if you tell all if this is possible (with more rear fade than front is there meaningful sound from the rear?
As I have advise above since my addition of the additional amp and pots I amreally pleased as the sound system is now what one would expect from a car like ours.
We all look forward to your comments as some with your MY or later with MB service getting access to the Eng Menue may give enough to please some
We await your response BUT as I have said I believe the only real way to get the performance expected is with an additional AMP.
Curious if anyone has used the "correct" CD that is supposed to give rear sound and what their experience was??? Anyone???
Steve




Edit: I wasn't fully rebooting the system for the changes to take effect. Working now!
Last edited by thethunderbird; Apr 17, 2019 at 03:59 AM.




Those who have been able to access the Eng. Menu with model yrs like yours have noted no real meaningful sound.
For all concerned who have a MY like yours do you find any meaningful sound coming from the rear speakers if you go full on to "fade rear" ? If so I understand a MB mechanic who has access to the Eng. Menu with the newer MY cars could maybe help those who need some rear sound? Be great if you tell all if this is possible (with more rear fade than front is there meaningful sound from the rear?)
I can't be the only one that tried "Quadrophonic" in the 70's, but even that original "surround sound" was weighted to the front, like where the band would be. Newer Dolby Surround systems of 5.1 and 7.1 are still weighted to the front, as they should be. I don't often turn on my Yamaha 5.1 Cinema DSP receiver any more but when I first set it up in the early 90's the biggest challenge was getting the rear levels right. Steve will remember the high end audio chain Tweeter Etc., where I worked for a short time. There, we were constantly educating people that the rear speakers should never compete with the fronts. My home theater rears are actually side-mounted to "wash" the side walls with ambient sounds, as in a movie theater. In movie audio they mostly indicate movement, like if a plane flies overhead or car speeds past. For music all they're really supposed to do is reinforce the natural echo of front-directed sound bouncing off the back of the hall. Remember the Bose 901? Wherever you stand on whether it's the greatest innovation ever or an overpriced marketing scam, even though eight of its nine 4-1/2" drivers play out of the rear of the speaker, that speaker still sits in front of you.
So, long story long, while there is no wrong way for the owner of a $100,000+/- car to enjoy its stereo, the intention of a 7.1 surround system, or of ANY stereo, is to entertain you from the front.
Now maybe someone will have an opinion on the ADAS Map Horizon Data setting....
Last edited by eddieo45; Apr 17, 2019 at 08:31 AM.




Last edited by eddieo45; Apr 17, 2019 at 02:01 PM.


Few thoughts :
Re the "Engineering Mode"....Yes on newer MYs (Hd Mech @ my dealer not sure but, thinks as of 2016 or 2017) factory changed access to only allow the Dealers Star System to make changes; this was done because owners were fooling around and really messing up a variety of settings causing many complaints and service calls.
Re FADE...I agree it's subjective and for me the only way I feel surrounded/immersed is since the fix I had done to the car; in fact as I have previously commented before the fix I was considering another car but, now I am so pleased that I plan to buy the car @ lease end as I don't want a soft top/4 seater that will likely have a better sound system.
Sure I remember Tweeter....wasn't it you that helped me with the EPI speakers

One thing I don't understand is why HK designed the system to give rear sound when only playing one disc format, doesn't make sense.
Question...has anyone tried to use the "correct" CD and if so have any comments???
BTW: The Burmeister system in my 2017 E is FAR superior in every way to the HK in the SL....anyone else w/both an SL and E feel the same?
Oh well...bottom line I'm happy with the new Amp and individual F & R pots to provide infinite control.
Steve








FWIW, and I don't think it's much, but I was a nightclub DJ for many years, most recently the House Music dominated 90's. While 1500 or so people are out on the floor being assaulted by thousands of watts driven through massive bass cabinets, directed mid-range horns and ceiling-suspended tweeter arrays, I'm up in the booth trying to hear one thing through a headphone on my left ear and another through the ceiling mounted monitor aiming straight down at me. Maybe that's why at this age I find myself more inclined to listen at moderate volumes.....


Boy do I agree with you s the the front center speaker overpowering all except the bass !
Try this: Go to sound control and play around with more treble and bass vs the mid range. I did this before my added amp and individual pot controls and it helped mute the center front speaker some.
Even with my "great sound" from the rear I still find adjusting the treble/midrange and bass helps with the center front speaker issue.
Steve
As SL's have no back seat, the system was designed with the front seat driver and passenger in mind, so no, there isn't that much sound coming from the rear speakers other than a bit of the 'surround effect', (low volume 'peripheral sounds'). The main thrust of sound is 'stereo effect sound' and focused towards the seating area of the car, as it was designed to be!
In my opinion, the HK Logic-7 System sounds just fine with Sirius XM Radio, (Digital Satellite Music), which is what I listen to almost exclusively now. Full Disclosure: I am not a 'Music Blaster' type of guy by any stretch of imagination!..

Of course, there are always subtle adjustments to be made to 'personalize the system', and as I said previously in Posts #109 and #124, setting the Bass and Treble output levels HIGHER makes a noticeable difference with the HK System. (I have both those levels set to +8 on my 2013 SL 550).
With the bass output level set to +8, (or higher), you'll know for sure the 231's much-touted 'built-into-the-subframe' SUBWOOFER is operating properly!
Note: While your're in 'Audio Settings', it's also a good idea to check that your Logic-7 Surround Sound is set to 'ON' as it should be...
Last edited by bob55; Jul 25, 2020 at 08:33 PM.




https://www2.iis.fraunhofer.de/AAC/multichannel.html
EDIT: I also converted the audio of this video to mp3 and, while it played, it did not correctly identify the rears.
Last edited by eddieo45; Apr 19, 2019 at 07:13 AM.
In addition to the DVD mentioned above, I was also provided with a 2nd Demo Disc produced by Harman Kardon. This one is CD Audio Media and is called 'The Sounds of New York'. It contains random sounds from NY City as well as some pop and classical music. It appears to be specifically designed by Harman Kardon and was recorded in 5.1 Surround to highlight the HK Logic-7 Surround Sound System, so for this one, make sure Logic-7 is turned 'ON'.
Both these Discs were found inside the leather case that came with the 231's User Manual. I suspect later models may have come with different demo discs than mine did, but really can't say for sure! However, if you haven't already listened to whatever demo discs that came with your 231, you may want to do so sometime soon!
Last edited by bob55; Apr 19, 2019 at 10:48 AM.


