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Hansshow Audio Upgrade? (SR+)

Discussion in 'Model 3' started by InfinitySky, Oct 7, 2020.

  1. Wallz

    Wallz Member

    Joined:
    Dec 10, 2020
    Messages:
    5
    Location:
    BC
    Hey guys,

    I have the Version E and haven't been fully satisfied with the sound at this point. Something is missing, there's no sound stage coming from the front, it's lacking.

    I think the problem is with the center dash speaker and front woofers. They're muffled, muddied and hollow. It's even more obvious when turning off the DSP.

    It was suggested by William many posts ago, that by turning off the DSP the original stock speakers will be only used, however when doing that, it does not return to the original speaker quality and performance.

    - Is anybody else encountering the same lackluster sound from the center speaker with the DSP turn ON or OFF?
    - Could this be a polarity issue?

    Thanks!
     
  2. Mitev

    Mitev Member

    Joined:
    Oct 30, 2020
    Messages:
    29
    Location:
    US
    Oh you’re right: using the hansshow harness would change everything. I use the one from Amazon too. In my case the two front woofers have wrong polarity so how can i reverse this on the Hansshow harness? Same question for the remaining speakers.
     
  3. beachsideev

    beachsideev Member

    Joined:
    May 23, 2020
    Messages:
    276
    Location:
    usa
    If they all have the wrong polarity then it shouldn't be a problem. Doesn't seem like a good idea though...
     
  4. j5701

    j5701 Member

    Joined:
    Dec 17, 2020
    Messages:
    16
    Location:
    Ontario, Canada
    Has anyone recently installed a DIY kit? Are the polarities right, and is the balance really fixed?
     
  5. William_Chan

    William_Chan Member

    Joined:
    Sep 19, 2019
    Messages:
    87
    Location:
    New York
    What is your order number, normal, about 5-7 workdays later, you will get the goods.
    We ship goods from China. But in order to save ship cost, sometimes, goods will ship from China to Dubai or Singapore, that is normal.
     
  6. William_Chan

    William_Chan Member

    Joined:
    Sep 19, 2019
    Messages:
    87
    Location:
    New York
    If you do not like the presently DSP setting. My suggestion is to use the laptop open the dsp settting.
    1. adjust the DSP main volume to 0%,
    2.adjust the Tesla Screen volume to a proper volume that you like.
    3.Adjust the DSP main volume to some level you like.
    4. keep the setting.
    (Please must do the step 1 by 1 as I said, or you may damage the speakers. The speaker can not stand full DSP power )
     
  7. Wallz

    Wallz Member

    Joined:
    Dec 10, 2020
    Messages:
    5
    Location:
    BC
    Hi William,

    Thanks for the suggestion. I will give it a try when I have time.

    The reason why I'm asking about the polarity of the wires is because it's behaving very similar like the subwoofer, where I had to cut and switch the +/- wires around to make the subwoofer work.

    But the other problem is if I turn off the DSP, the sound from the dash speakers do not work properly and the front woofers barely make sound.

    Can you tell me why the sound is not returned to normal?
     
  8. Wallz

    Wallz Member

    Joined:
    Dec 10, 2020
    Messages:
    5
    Location:
    BC
    More importantly, what happens if the DSP stops working?

    That means it will not sound like the original stock system if the DSP dies and I would have to unplug the harness again.

    It's almost impossible to unplug the connections. I'm speaking from experience since I had to replace the first faulty harness I received.

    Can anyone who has the hansshow harness installed confirm the results if you turn off your DSP?
     
  9. William_Chan

    William_Chan Member

    Joined:
    Sep 19, 2019
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    87
    Location:
    New York
    Please @ me on Whatsapp
     
  10. fritzner

    fritzner Member

    Joined:
    Jan 1, 2020
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    210
    Location:
    Pittsburgh, Pennsylvania
    Thanks! It was important to me not to take up any usable space. But if anyone doesn't want to hassle with squeezing the Rockford Fosgate into the factory location, the P300-8P (and even the 10P) fit nicely in the sub trunk.
    I tapped my signals from L&R front woofers in the Hansshow harness. The sub has high level inputs and audio turnout that is working perfectly.
    I am going to add another bracket, remove any of the excess foam, and add a bit more Noico (dynamat) to tighten the sound up a bit.
     
  11. beachsideev

    beachsideev Member

    Joined:
    May 23, 2020
    Messages:
    276
    Location:
    usa
    I spent a bunch of time checking the polarity of each of the speakers in my car using the android app I posted here. These results are after installing the diy wiring harness I received in mid to late november. my car (feb 2020 build) has the factory rear shelf speakers and wiring installed. your results will probably vary. :)

    1. The front driver's door woofer is wired backwards
    2. The right rear shelf speaker is wired backwards
    3. All other speakers appear to be wired correctly.

    Here are some tips I discovered that made testing more accurate:

    1. You need to adjust the threshold level and volume very carefully to guarantee that you are only picking up the signal from the speaker you are checking. you want the signal meter to just show a little yellow past the threshold slider. I held the phone just in front of with the mic facing the speaker I was checking.
    2. Use the balance control to only check one section at a time (i.e. left front, right front, etc.).
    3. I used towels to further muffle the other speakers in the front while testing the tweeters. These were the most difficult to test accurately.
    4. The app has the ability to flip the polarity of the test signal. I used this to double check my results. You should see the opposite result when the pulse is flipped.
    5. I used a 80 hz pulse for the front door woofers, 500 hz for all the rears, and 1.2 khz for the front dash and door tweeters.

    I'd really like to see the results of a car that hasn't had the wiring harness installed yet. If I get bored later this week I might undo mine to measure it myself. We'll see.

    As for fixing it, I will probably modify the harness if possible especially if the results from the stock wiring show all the speakers are wired correctly (i.e. all positive). I'm fairly sure i can extract the pins and flip it in the connector but this needs more studying.

    Free app I used:
    https://play.google.com/store/apps/details?id=com.dwa_ict.polaritychecker
     
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    • Like x 1
  12. badiban

    badiban Member

    Joined:
    Nov 26, 2019
    Messages:
    153
    Location:
    Texas
    This is awesome, thanks for sharing. I ordered mine mid-December, so I really hope they fixed everything.
     
  13. Hayden

    Hayden Active Member

    Joined:
    Apr 12, 2016
    Messages:
    1,238
    Location:
    Belgium
    My god .... plug and play they say:rolleyes:
    You can just as well build your own harness with the work you have to put into the Hanshows.
     
    • Like x 2
    • Funny x 1
  14. HitUpOlas

    HitUpOlas Member

    Joined:
    Aug 15, 2020
    Messages:
    71
    Location:
    Atlanta
    Just received the version F kit. Here is the link to the YouTube video I have of the unboxing and details of the harness. I’m going to do the install tomorrow and will record that as well.
     
    • Like x 2
  15. beachsideev

    beachsideev Member

    Joined:
    May 23, 2020
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    276
    Location:
    usa
    Don't know about that... :D

    One more tip: turn off the fans/ac when using these testers. the noise of the fans occasionally caused issues. you need to do this in a very quiet environment to give the app the best chance of working.
     
  16. beachsideev

    beachsideev Member

    Joined:
    May 23, 2020
    Messages:
    276
    Location:
    usa
    I swapped the polarity on my right rear shelf speaker! I removed the leather covered seat panel next to the right rear seat back to gain access to the connectors, separated the connectors and identified the two wires with a tone generator. The right rear shelf speaker uses the yellow and grey wires while the left rear shelf speaker uses the purple and white wires. Note these are the colored wires in the original tesla wiring harness for the speakers, not the mating wires on the hansshow diy adapter!

    I used a pin extraction tool to remove the two offending wires from the hansshow mating connector. Unfortunately I guess I was a little too rough with the extraction tool since I was unable to get them to latch in place after reinserting them. I spent a quite a bit of time trying to shape the retention tab on the pin to get it to latch, but nothing worked. My guess is I damaged the housing which prevented the latch from catching. oops! My solution was to reinsert the pins in the correct positions (after testing them of course!) and running a bead of hot melt glue along the back of the housing to hold the wires in place. I also wrapped the 4 speakers wires together with electrical tape for additional insurance. The mating force of the socket was actually pretty high and it is possible that neither of these two precautions were necessary, but I figured better safe than sorry.

    Below are some before and after pictures.

    Hansshow DIY harness installed as received. The pins I removed are the gray and gray/black wires on the bottom left of the mating connector.
    rr connector original.jpg

    After extracting the two wires and swapping them to correct the polarity. Notice the black stripe in is a different position.

    rr spkr pins swapped.jpg

    Reconnected. Note hot glue along back of hansshow connector and new electrical tape.
    rr speaker swap done.jpg

    So, how does it sound? Don't know as I haven't really tried it yet. Sorry!
     
  17. beachsideev

    beachsideev Member

    Joined:
    May 23, 2020
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    276
    Location:
    usa
    If you are playing along at home, access to the driver's door woofer is not in the connectors on the driver's side of the car. :(

    Looks like I'm going to have to remove the passenger kick panel cover to get at the connector at the output of the hansshow crossover box. I was hoping it would be easier than that. Oh well...
     
  18. Gaggu P

    Gaggu P Member

    Joined:
    Dec 28, 2020
    Messages:
    14
    Location:
    Ontario, Canada
    I've installed 10 in the last month, some had the balance crossed in the rear and had to be fixed while others were fine.
     
  19. tlr1000

    tlr1000 Member

    Joined:
    Jun 14, 2018
    Messages:
    795
    Location:
    Vancouver
    Sounds like a complete crapshoot. At least if the mistake was consistent, it'd be easier to fix. How would an owner installing one ever know? No one should have to resort to cutting, soldering, repinning, etc- it should just work out of the package as plug and play or they should either send a new one or give a full refund.

    Also when people have a lot of issues, they are asked to take their issues offline rather than sharing common known issues publicly.
     
  20. scramjet

    scramjet Member

    Joined:
    Jun 1, 2019
    Messages:
    23
    Location:
    Vancouver, BC
    Remember to read the notes on that app before you start changing wires around. Reverse polarity is not necessarily "wrong". In fact in many systems, certain speakers are wired in reverse polarity on purpose. Also speakers may have reverse polarity for certain frequencies by design again. I don't believe the door woofer wiring is affected by the hansshow kit and as long as both speakers are either reversed polarity or not then you do not need to touch those wires.

    I also went around the car with a polarity tester and found the results to be less than accurate, ymmv. I did hot swap the wires on the door tweeters to see if there's any difference but can't really notice anything, but did swap those wires. I also had to swap the L and R wires for the rear shelf as they were reversed. I did hot swap the wires on the sub aswell and that definitely made a difference in sub response.

    I currently have very good response from the door woofers and the rear sub on my version E, and I'm overall happy with the results after tweaking the DSP profile.
     

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