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  1. #1
    Veteran Member Four Rings Undisputed's Avatar
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    DIY: B6 A4 - Symphony 2 to Symphony 2+ Upgrade

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    This is a very easy mod. I searched but never found an actual DIY for it. I found plenty for the RNS-E swap, but none for this one. A few people asked me to document the change so here it is.
    Not too much needed as far as tools:
    Got my symphony 2 to 2+ harness:

    Antenna Adapter

    Radio Keys

    And most importantly, the radio!


    Here is the before pic:
    Yes I'm missing the trim. But Matt at OCarbon is going to remedy that pretty soon.

    Step 1: Insert the radio keys. You need four of them. One for each corner. The notch on the key goes toward the center of the radio as shown. Insert them until they click. If you put them in backwards, you'll know, and they'll be hard to get out.


    Keys are all in:


    Step 2: After the keys are all in, pull on all four corners with even force to get the radio out.


    If necessary, insert a finger into the tape deck and pull gently.


    Step 3: After the unit is out, you'll see how the plugs are connected in the back. The 2 small plugs in this picture are for the antennas. You will need the adapter to connect the antenna from to the back of the Symphony 2+ because it uses a different type of connector.


    In this picture you see the 3 connectors that need to be plugged into the new adapter. They're very easy to remove. Unplug them and attach them into the appropriate ends of the new harness. They only fit in one way so it's foolproof.

    Step 4: Attach the Quadlock connector onto the back of the Symphony 2+. This is also foolproof because it only fits on one way. Remember that the connector has a lock on it to hold it in place. (Hence the name) so, here it is in the locked position. .

    You'll need to unlock it to put it onto the radio:

    Step 5: Unlock it, attach it to the back of the radio, and lock it once it's in place.

    Step 6: Attach the antenna adapter to the open end of the antenna connection. Once again, it only fits on one way.


    Step 7: Once all of the connections are in place, you should hear the internal CD changer cycling. Push the on button and you'll come to this screen so that you can enter the code.


    Step 8: Each button on the side of the screen corresponds with a number position in the code sequence. You just push the button for the number that you want to enter and use the right knob to scroll to the proper number. After you have entered all of the numbers, you will come to the radio screen.


    Step 9: Remove the radio keys from the old unit. Now obviously you can't pull the keys out because then you could never pull the radio from the car. there is a very small tab inside the hole that is by the barcode in this picture. Don't worry, you'll see it. You need to push down on that tab and the key will be able to be pulled out. It, will come out very easily.


    Step 10: Enjoy!!


    Although it looks lengthy, it only takes about 15 min or so. i just wanted to make sure that I took plenty of pictures so that it would be as helpful as possible. Hopefully this will help somebody out.

    BTW, I love the Symphony 2+. It looks great and sounds far better than the Symphony 2. The only gripe is that it looks more grey than black so there is a bit of a color mismatch. I'll deal with it though.
    Last edited by Undisputed; 11-21-2009 at 08:31 PM.
    05' USP 6MT-REVO Stage II- Racetec- Stoptech 332- OCarbon Fiber Interior Trim- B7 RS4 Steering Wheel- VMR Boost Gauge- Siemens 380's- Bailey Motorsport DV- NGK Copper Plugs- LED tails- and a few other things

    -Damon-

    USP CLUB MEMBER #927


  2. #2
    Veteran Member Four Rings JBM's Avatar
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    Re: Symphony 2 to Symphony 2+ DIY in 10 steps

    question where did you get the harness from? Also is this the A3 or A4 symphony
    "Give a Man a Fish, Feed Him For a Day. Teach a Man to Fish, Feed Him For a Lifetime"

    '02 B6 1.8T, UnitedMotorsport Tuned FrankTurbo L21, 550CC, 3" MAF, BB Intercooler, 007, 034 HFC, Neuspeed Exhaust, B5 S4 Brakes, KW Suspension, S4 Recaro, and the list goes on.

  3. #3
    Veteran Member Four Rings Jeff's Avatar
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    Re: Symphony 2 to Symphony 2+ DIY in 10 steps

    Any actual noticeable difference in sound quality between the two? The Symphony II's SNR is very low and the output has always been muddy, I had to use a line driver and DSP in order to clean it up.

  4. #4
    Veteran Member Four Rings Undisputed's Avatar
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    Re: Symphony 2 to Symphony 2+ DIY in 10 steps

    Quote Originally Posted by JBM View Post
    question where did you get the harness from? Also is this the A3 or A4 symphony
    It's the A4 Symphony Non-Bose. I'll send you a PM about the harness because I got it from a non-sponsor.
    05' USP 6MT-REVO Stage II- Racetec- Stoptech 332- OCarbon Fiber Interior Trim- B7 RS4 Steering Wheel- VMR Boost Gauge- Siemens 380's- Bailey Motorsport DV- NGK Copper Plugs- LED tails- and a few other things

    -Damon-

    USP CLUB MEMBER #927


  5. #5
    Veteran Member Four Rings
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    Re: Symphony 2 to Symphony 2+ DIY in 10 steps

    I've wanted to do this since I got my car, only reason I've been a little gun-shy is that I heard your radio reception takes a serious nose dive.

  6. #6
    Veteran Member Three Rings AudiMat's Avatar
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    Re: Symphony 2 to Symphony 2+ DIY in 10 steps

    Looks good... i'm looking to do this as well, thanks for the DIY.

    Its interesting to see an "Off" button on the climate control... mine dosent have that, i've got another recirculation button with an "A" above it for auto recirc.

    EDIT: if you get a chance, can you post up a night pict... i'm curious to see what it looks like with everything lit up.
    Last edited by AudiMat; 10-09-2009 at 04:37 PM. Reason: Added text
    -Matt

    Current:2018 A4 Prestige / Gotland Gang

    Past: Ibis White '12 S4 Prestige, Laser Blue '09 VW GLI, Black '06 S4, Cactus Green '01 S4, Black '02 3.slow, Santorin Blue '01 1.8T (and a bunch of Saabs and Subarus also in there that are not worth mentioning)

  7. #7
    Veteran Member Four Rings Undisputed's Avatar
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    Re: Symphony 2 to Symphony 2+ DIY in 10 steps

    Quote Originally Posted by Jeff View Post
    Any actual noticeable difference in sound quality between the two? The Symphony II's SNR is very low and the output has always been muddy, I had to use a line driver and DSP in order to clean it up.
    The sound quality is much much better than the Symphony. The clarity is greatly improved. There is also a hidden EQ that I have not had the time to access. If you guys want, I'll add that to this thread also.

    I saw alot of talk about the fact that the FM signal quality is poor when you do this conversion because the antenna is no longer amplified. I have not had this problem. My FM reception is great, but it may be that I'm in a good area.
    05' USP 6MT-REVO Stage II- Racetec- Stoptech 332- OCarbon Fiber Interior Trim- B7 RS4 Steering Wheel- VMR Boost Gauge- Siemens 380's- Bailey Motorsport DV- NGK Copper Plugs- LED tails- and a few other things

    -Damon-

    USP CLUB MEMBER #927


  8. #8
    Veteran Member Four Rings Undisputed's Avatar
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    Re: Symphony 2 to Symphony 2+ DIY in 10 steps

    Quote Originally Posted by AudiMat View Post
    Looks good... i'm looking to do this as well, thanks for the DIY.

    Its interesting to see an "Off" button on the climate control... mine dosent have that, i've got another recirculation button with an "A" above it for auto recirc.

    EDIT: if you get a chance, can you post up a night pict... i'm curious to see what it looks like with everything lit up.
    I'll put up a pic tonight.
    05' USP 6MT-REVO Stage II- Racetec- Stoptech 332- OCarbon Fiber Interior Trim- B7 RS4 Steering Wheel- VMR Boost Gauge- Siemens 380's- Bailey Motorsport DV- NGK Copper Plugs- LED tails- and a few other things

    -Damon-

    USP CLUB MEMBER #927


  9. #9
    Veteran Member Four Rings Jeff's Avatar
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    Re: Symphony 2 to Symphony 2+ DIY in 10 steps

    Quote Originally Posted by Undisputed View Post
    The sound quality is much much better than the Symphony. The clarity is greatly improved. There is also a hidden EQ that I have not had the time to access. If you guys want, I'll add that to this thread also.

    I saw alot of talk about the fact that the FM signal quality is poor when you do this conversion because the antenna is no longer amplified. I have not had this problem. My FM reception is great, but it may be that I'm in a good area.
    How much did you end up paying for the new head unit? Sounds interesting.

  10. #10
    Veteran Member Four Rings
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    Re: Symphony 2 to Symphony 2+ DIY in 10 steps

    could you pm me where you got the harness and how much? i've been looking into doing this for a while now, but lost the link for the harness i found a while back.

    '97 A4 1.8TQ, '02 A4 1.8TQ Avant, '03 A4 1.8TQMS, '04 A4 3.0Q Cabrio - Sold
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  11. #11
    Veteran Member Four Rings Undisputed's Avatar
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    Re: Symphony 2 to Symphony 2+ DIY in 10 steps

    The HU cost me $155 shipped on eBay. I got lucky.
    05' USP 6MT-REVO Stage II- Racetec- Stoptech 332- OCarbon Fiber Interior Trim- B7 RS4 Steering Wheel- VMR Boost Gauge- Siemens 380's- Bailey Motorsport DV- NGK Copper Plugs- LED tails- and a few other things

    -Damon-

    USP CLUB MEMBER #927


  12. #12
    Veteran Member Four Rings A4Dit's Avatar
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    Re: Symphony 2 to Symphony 2+ DIY in 10 steps

    You can get the harness at Europarts.com. It will run you about $75 for everything. Not a bad deal if you get the head unit at a good price. I paid $285 off of ebay for the unit, $50 to have the dealer get me the code and $75 for the harness. It set me back roughly $400 dollars and was worth every dollar. The radio reception isn't as good as the SymII I can attest, but the clarity on good station or a CD is amazing. And the color must be a model year issue because mine matches the rest of my interior. Here are some pics-
    Day


    Night
    BetaAlphaTauMember #39 GTRS Powered/Revo Tuned

  13. #13
    Veteran Member Four Rings Undisputed's Avatar
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    Re: Symphony 2 to Symphony 2+ DIY in 10 steps

    I forgot to take a pic last night. Lol

    and I didn't want to put that info out there for the reasons that I stated above.
    05' USP 6MT-REVO Stage II- Racetec- Stoptech 332- OCarbon Fiber Interior Trim- B7 RS4 Steering Wheel- VMR Boost Gauge- Siemens 380's- Bailey Motorsport DV- NGK Copper Plugs- LED tails- and a few other things

    -Damon-

    USP CLUB MEMBER #927


  14. #14
    Veteran Member Four Rings A4Dit's Avatar
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    Re: Symphony 2 to Symphony 2+ DIY in 10 steps

    ^Are you serious? You can recommend to other forum members where they can source a part to aide in their install. I wasn't trying to advertise anybody. As far as I know they are the only company that manufactures that harness. You mentioned ebay and they are not a form sponsor.
    BetaAlphaTauMember #39 GTRS Powered/Revo Tuned

  15. #15
    Veteran Member Four Rings Undisputed's Avatar
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    Re: Symphony 2 to Symphony 2+ DIY in 10 steps

    I'm just trying to make sure that i'm not violating any rules. That's all. I know that there have been some recent changes. That's all. As long as the mods don't mind, then I don't care. As far as eBay, I bought it from a person, not a company.
    05' USP 6MT-REVO Stage II- Racetec- Stoptech 332- OCarbon Fiber Interior Trim- B7 RS4 Steering Wheel- VMR Boost Gauge- Siemens 380's- Bailey Motorsport DV- NGK Copper Plugs- LED tails- and a few other things

    -Damon-

    USP CLUB MEMBER #927


  16. #16
    Veteran Member Four Rings n7plus1's Avatar
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    Re: Symphony 2 to Symphony 2+ DIY in 10 steps

    great writeup, they need to sticky this.

  17. #17
    Veteran Member Four Rings SeKKeY's Avatar
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    Re: Symphony 2 to Symphony 2+ DIY in 10 steps

    excellent, this might be the route i take if my radio keeps peeling..
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  18. #18
    Veteran Member Three Rings AudiMat's Avatar
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    Re: Symphony 2 to Symphony 2+ DIY in 10 steps

    LOL... what happened to the "night" pict? I'm curious if the red is the same and if the bigger digital display is overkill at night.
    -Matt

    Current:2018 A4 Prestige / Gotland Gang

    Past: Ibis White '12 S4 Prestige, Laser Blue '09 VW GLI, Black '06 S4, Cactus Green '01 S4, Black '02 3.slow, Santorin Blue '01 1.8T (and a bunch of Saabs and Subarus also in there that are not worth mentioning)

  19. #19
    Veteran Member Four Rings
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    Re: Symphony 2 to Symphony 2+ DIY in 10 steps

    THanks for the DIY, rep to you.
    I really like the modern look of that radio compared to the symphony II. The Aux port and MP3 playback is a huge plus

  20. #20
    Veteran Member Four Rings
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    Re: Symphony 2 to Symphony 2+ DIY in 10 steps

    Quote Originally Posted by pkny View Post
    THanks for the DIY, rep to you.
    I really like the modern look of that radio compared to the symphony II. The Aux port and MP3 playback is a huge plus
    aux port? as in i can just run a straight stereo cable to my mp3 player/phone from the back of the headunit?

    '97 A4 1.8TQ, '02 A4 1.8TQ Avant, '03 A4 1.8TQMS, '04 A4 3.0Q Cabrio - Sold
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  21. #21
    Veteran Member Four Rings Tone-Dogg's Avatar
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    Re: Symphony 2 to Symphony 2+ DIY in 10 steps

    Nice job, thank you for the DYI
    2016 Q5 3.0T Quattro P+ Sline Black Optic

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  22. #22
    Veteran Member Three Rings A4twin's Avatar
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    Re: Symphony 2 to Symphony 2+ DIY in 10 steps

    What kind of aux. Input does the radio have
    TIA
    2016 SQ5 APR OBD11

  23. #23
    Established Member Two Rings
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    Re: Symphony 2 to Symphony 2+ DIY in 10 steps

    I did this as well awhile ago, my reception sucks, cds sound great...anyone figure out how to get the AUX to work??

  24. #24
    Senior Member Three Rings
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    Re: Symphony 2 to Symphony 2+ DIY in 10 steps

    ANyone have problems with reception fading in and out. Some days it works fine and others there's nothing.

  25. #25
    Veteran Member Four Rings diagnosticator's Avatar
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    Re: Symphony 2 to Symphony 2+ DIY in 10 steps

    Quote Originally Posted by Jeff View Post
    Any actual noticeable difference in sound quality between the two? The Symphony II's SNR is very low and the output has always been muddy, I had to use a line driver and DSP in order to clean it up.
    Yes, the Sym II+ sounds a lot better than the Sym II, with more dynamic response and better base, due to the higher power/better spec amp.
    Together with the Infinity Kappa front speakers I added the difference is amazing.
    Last edited by diagnosticator; 10-11-2009 at 06:26 PM.

  26. #26
    Veteran Member Four Rings diagnosticator's Avatar
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    Re: Symphony 2 to Symphony 2+ DIY in 10 steps

    Quote Originally Posted by Gails Woofel View Post
    I did this as well awhile ago, my reception sucks, cds sound great...anyone figure out how to get the AUX to work??
    If you press the CD button the signal input cycles between CD and AUX input.

  27. #27
    Veteran Member Four Rings diagnosticator's Avatar
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    Re: Symphony 2 to Symphony 2+ DIY in 10 steps

    Quote Originally Posted by CaRtharsis View Post
    ANyone have problems with reception fading in and out. Some days it works fine and others there's nothing.
    The only solution for this (broadcast FM, ) is to retrofit the antenna amplifiers that go with the Sym II+. The Sym II uses "Diversity Switching" and swaps the active antenna HF to the HU according to signal strength. The Sym II+ uses "Phase Diversity" and switches between one or the other of the pair of digital tuners in the HU according to received signal quality.

    The other option, the one I use, is the OEM SAT receiver/tuner that connects seamlessly with the HU and provides for CD audio quality and displays channel and artist info on the HU and DIS.

  28. #28
    Veteran Member Four Rings diagnosticator's Avatar
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    Re: Symphony 2 to Symphony 2+ DIY in 10 steps

    Quote Originally Posted by A4twin View Post
    What kind of aux. Input does the radio have
    TIA
    Low level AUX input.

  29. #29
    Established Member Two Rings dsstultz's Avatar
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    Re: Symphony 2 to Symphony 2+ DIY in 10 steps

    Does this work with the bose system?

  30. #30
    Veteran Member Four Rings Undisputed's Avatar
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    Re: Symphony 2 to Symphony 2+ DIY in 10 steps

    Diagnosticator you're the man. And dsstultz, yes it will work with Bose. You just need a different adapter. Still plug and play though.
    05' USP 6MT-REVO Stage II- Racetec- Stoptech 332- OCarbon Fiber Interior Trim- B7 RS4 Steering Wheel- VMR Boost Gauge- Siemens 380's- Bailey Motorsport DV- NGK Copper Plugs- LED tails- and a few other things

    -Damon-

    USP CLUB MEMBER #927


  31. #31
    Veteran Member Four Rings diagnosticator's Avatar
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    Re: Symphony 2 to Symphony 2+ DIY in 10 steps

    Quote Originally Posted by Undisputed View Post
    The HU cost me $155 shipped on eBay. I got lucky.

    At that price, it was almost free!

  32. #32
    Veteran Member Four Rings diagnosticator's Avatar
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    Re: Symphony 2 to Symphony 2+ DIY in 10 steps

    Quote Originally Posted by Undisputed View Post
    The sound quality is much much better than the Symphony. The clarity is greatly improved. There is also a hidden EQ that I have not had the time to access. If you guys want, I'll add that to this thread also.

    I saw alot of talk about the fact that the FM signal quality is poor when you do this conversion because the antenna is no longer amplified. I have not had this problem. My FM reception is great, but it may be that I'm in a good area.

    Please post up about the "hidden EQ", I don't know about that. On another item, does your HU allow for the display of the current road speed, and or time? My HU has those selections in the setup menu, but according to an Audi TSB, those features are not supported but will be in a later firmware version. Also, I am trying to find out if the firmware can be updated via an update CD ROM, any idea if this is possible?

  33. #33
    Veteran Member Four Rings diagnosticator's Avatar
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    Re: Symphony 2 to Symphony 2+ DIY in 10 steps

    Quote Originally Posted by AudiMat View Post
    LOL... what happened to the "night" pict? I'm curious if the red is the same and if the bigger digital display is overkill at night.


    The dash illumination including the HU, self adjusts to the ambient lighting level. In addition, there is the manual lighting intensity adjustment on the instrument cluster.

  34. #34
    Veteran Member Four Rings Undisputed's Avatar
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    Re: Symphony 2 to Symphony 2+ DIY in 10 steps

    It was definately a steal at that price. The night-time illumination matches perfectly. I got a couple of quick Iphone pics last night.



    A seamless blend that doesn't overpower in any way.

    I'm going to go out and see if I can find the hidden EQ. As far as speed display I don't know. It does show the time though. If I remember correctly you have to push the "info" button and the option comes up on the right side of the screen.
    05' USP 6MT-REVO Stage II- Racetec- Stoptech 332- OCarbon Fiber Interior Trim- B7 RS4 Steering Wheel- VMR Boost Gauge- Siemens 380's- Bailey Motorsport DV- NGK Copper Plugs- LED tails- and a few other things

    -Damon-

    USP CLUB MEMBER #927


  35. #35
    Veteran Member Four Rings Undisputed's Avatar
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    Re: Symphony 2 to Symphony 2+ DIY in 10 steps

    Ok, I read what I found about the hidden EQ and it's for the A6 stereo not this one. Also the clock option is accessed by pressing the "Menu" button. Not info.

    I do like the single click on the volume knob for mute though. Very useful for the drive-thru.
    05' USP 6MT-REVO Stage II- Racetec- Stoptech 332- OCarbon Fiber Interior Trim- B7 RS4 Steering Wheel- VMR Boost Gauge- Siemens 380's- Bailey Motorsport DV- NGK Copper Plugs- LED tails- and a few other things

    -Damon-

    USP CLUB MEMBER #927


  36. #36
    Veteran Member Four Rings diagnosticator's Avatar
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    Re: Symphony 2 to Symphony 2+ DIY in 10 steps

    I can't get my HU to display the clock, even though there is a menu choice for that. When I select the clock option nothing changes. Does your HU display the time? How about the other menu choices?

  37. #37
    Veteran Member Four Rings
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    Re: Symphony 2 to Symphony 2+ DIY in 10 steps

    Quote Originally Posted by diagnosticator View Post
    Low level AUX input.
    what exactly is a low leval aux? couldn't really find a good definition on wiki.

    '97 A4 1.8TQ, '02 A4 1.8TQ Avant, '03 A4 1.8TQMS, '04 A4 3.0Q Cabrio - Sold
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  38. #38
    Veteran Member Four Rings diagnosticator's Avatar
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    Re: Symphony 2 to Symphony 2+ DIY in 10 steps

    Quote Originally Posted by NyteEscape View Post
    what exactly is a low leval aux? couldn't really find a good definition on wiki.
    It is an unamplified audio signal. Usually 2 to 4 volts audio frequency, aka Preamp level. Line level signals are post amp and drive the speakers.
    Last edited by diagnosticator; 10-11-2009 at 03:04 PM.

  39. #39
    Veteran Member Four Rings diagnosticator's Avatar
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    Re: Symphony 2 to Symphony 2+ DIY in 10 steps

    Quote Originally Posted by Undisputed View Post
    Ok, I read what I found about the hidden EQ and it's for the A6 stereo not this one. Also the clock option is accessed by pressing the "Menu" button. Not info.

    I do like the single click on the volume knob for mute though. Very useful for the drive-thru.

    If you hold the menu button down for a few seconds the display will show a diagnostics view and you can see the signal strength and other system values. I am curious if your HU shows more/different info than my HU does.

  40. #40
    Veteran Member Four Rings diagnosticator's Avatar
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    Seattle, WA

    Re: Symphony 2 to Symphony 2+ DIY in 10 steps

    BTW, +Rep to you for this excellent write up!

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