[scott_eh]

Sorry to bump an old thread but I think I need to do something like this to my Treg. There's a lot of talk about '04s here, mine is an '05 that came with factory nav, does this stuff apply?

I have a factory CD changer under the factory amp but I'm not sure if my amp would be digital or analog. I've installed an Android head unit that I bought from Seicane (before I saw the huge thread on CT about these units). The sound works but the sound quality is terrible. It sounds tinny and unbalanced. I think it's because it's being amplified twice (at the head unit then at the factory amp). So I'm looking into bypassing the factory amp but not sure if the method in this thread will apply to my situation. Can anyone advise? I haven't run any extra wires from the HU to the amp... thanks!

Bow Down

 

[deh2002]

I'd be more than willing to pay you to make me one of these setups.


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[AngryBaldMan]

My worry with this setup is that there will be no crossovers in line before the speakers. Unless the drivers have them built in (which would be unusual) I would have thought that the line level signals from the factory head unit would have been sent directly to the amp, which would in turn split off the various channels for the 11 speakers whilst only sending the correct frequencies to the correct drivers. By simply splicing the cables together you will be sending all the frequencies to all the drivers, so bass will still go the the tweeters and high frequencies to the subs.....

 

[marshatherton]

My worry with this setup is that there will be no crossovers in line before the speakers. Unless the drivers have them built in (which would be unusual) I would have thought that the line level signals from the factory head unit would have been sent directly to the amp, which would in turn split off the various channels for the 11 speakers whilst only sending the correct frequencies to the correct drivers. By simply splicing the cables together you will be sending all the frequencies to all the drivers, so bass will still go the the tweeters and high frequencies to the subs.....

While that's true, the subs and tweeters are only capable of producing a certain frequency anyway.

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[AngryBaldMan]

That's my point send 120htz to a tweeter you could kill it. You can also have a situation where certain frequencies are capable of being reproduced by more than one speaker, so the midrange can do 200hz at its lowest end and the sub can do 200hz at its upper end, consequently they will both play that frequency, these frequencies will thrn be louder in the mix. It's just bad audio to not have a crossover in the system

 

[marshatherton]

That's my point send 120htz to a tweeter you could kill it. You can also have a situation where certain frequencies are capable of being reproduced by more than one speaker, so the midrange can do 200hz at its lowest end and the sub can do 200hz at its upper end, consequently they will both play that frequency, these frequencies will thrn be louder in the mix. It's just bad audio to not have a crossover in the system

Well, that part is true.

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[marshatherton]

Problem solved tregradios.com Navall3

Not when they don't answer their questions from contact...

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[marshatherton]

So..... Another thing I have been thinking about.


Technically, the late 2004-2005 and up don't have the digital amplifier.

So, here's the question. If the 2004 and 2005 touareg both have the 11 speaker stereo, the only difference is the amp and head unit, why not just swap the amp?

Example. Android head unit to newer model 2005 amplifier, which should directly plug into the 11 speakers.

Thoughts?

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[deh2002]

So..... Another thing I have been thinking about.


Technically, the late 2004-2005 and up don't have the digital amplifier.

So, here's the question. If the 2004 and 2005 touareg both have the 11 speaker stereo, the only difference is the amp and head unit, why not just swap the amp?

Example. Android head unit to newer model 2005 amplifier, which should directly plug into the 11 speakers.

Thoughts?

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After you mentioned it I've been thinking about buying an analog amp just to try.
Like you mentioned in your post, they all appear to be for a 12 speaker system which I've not heard of for the 04/05 touareg.

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[marshatherton]

After you mentioned it I've been thinking about buying an analog amp just to try.
Like you mentioned in your post, they all appear to be for a 12 speaker system which I've not heard of for the 04/05 touareg.

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I can't seem to find one. Of course, I don't know what I'm looking for. The digital ones are easy to find.

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[Mancubus]

Hey all, I'm back after a long hiatus from visiting this site. I see a lot of questions flying around, hopefully you all have been able to move on and build your own units in your cars. My original design is still in my car after many years without any issues whatsoever. It still sounds great and is definitely on par with some of the newer car radios that I've had the opportunity to listen to while traveling for business. If there are any outstanding questions, I'll try to answer to the best of my ability, keeping in mind that I've had this installed in my car for going on 3 years now....

 

[marshatherton]

I have questions. I'm really interested in doing this. My question is I don't want to rip apart the entire car.

Question one.

There were two different amp options. The digital and the analog. Supposedly, the digital amplifier offered "DSP". But the analog didn't, but still supported the 11 speakers. It appears that the Android based system works with the analog, "DVD based" navigation system found in the newer touaregs. Do you think it's possible to just swap the digital amplifier for an analog one, and then you should have a plug and play system.

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[Mancubus]

If the pin outs and the harnesses are 100% identical then yes, that would be a plug and play design but then you'd need to find the analog factory amp to swap it out and it would definitely require you to tear your car apart to get the old amp out. The amp is buried under the rear panel and it's in there pretty good. In fact, I haven't bothered to remove mine after all these years. Maybe I'll get around to it this summer.

 

[Ionman]

If the pin outs and the harnesses are 100% identical then yes, that would be a plug and play design but then you'd need to find the analog factory amp to swap it out and it would definitely require you to tear your car apart to get the old amp out. The amp is buried under the rear panel and it's in there pretty good. In fact, I haven't bothered to remove mine after all these years. Maybe I'll get around to it this summer.

Mancubus, awesome job in providing great info. I jogged all the info down, and made a list to purchase items. I just want a bit of clarity if you don't mind:

1. Are those rheostats the run-of-the-mills light dimmers, with 4 settings (with each settings clicks into place when you slide)?

2. You've by-passed your factory amp using a by-pass harness for you HU. Question is, is each of the new HU channel utilizes an individual rheostat, or did you combine both Front-Left & Front-Right positive wires to one of the rheostat, and run your split lines off the to all those speakers? I'm curious because you only indicated two rheostats on your diagrams without any further clarity on how the rheostat was wired.

3. Did you run each of those split wires to individual speaker wire, or did you spliced your wires into the wires on the factory amp? You mention you remove the power cables that feed the speakers, but didn't mention about splicing or re-wiring your speaker wires.

Any information is greatly appreciated. It sounds like you have a background on electrical engineer, with a big helping of DIY-er.

 

[deh2002]

If anyone has reproduced this and world be willing to make another with install instructions I'll gladly pay for it.
Thanks

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[marshatherton]

Apparently another member on my page found a radio that's plug and play for the cd based navigation system. It plugs straight to the amp, and allows all 11 speakers to work.

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[Reverseoreo]

What is this plug n play model you mention?

 

[marshatherton]

Look on my post.

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[Ionman]

Time to experiment

I believe I've figured out Mancubus' schematic design now, after reading through various posts about newer models, HUs, and *feeling jealous* digital amps pre-built in. We still have our 2004 Eggie, stocked to the core, except the wired T-connector with overload protector and powered 4-poles for the trail, on top of the DrawTite Class III hitch. It barely hit 60K miles on it. Yes, we don't use the Eggie much.

After looking through the parts at various box stores, with schematic specs on the parts, I believe I've found a surgical procedure for this madness that have been sorely lacking in the previous posts. This is the unit I want to upgrade with, after the stock CD Nav HU is considered as a piece of crap by today's high tech:

carnaviplayerm site, for "volkswagen-touaregt5-android-51-os-gps-navigation-head-unit-p-314" (Can't post the link yet).

Extension cable is definitely needed for the mod.
* Backup camera may be considered, definitely go for the wireless. More power load to the fun.
* DVR camera is a definitely for dealing with today's drivers. Great to have it as a set, and will upgrade to 1080 later.
* Definitely an external GPS-Radio unit to deal with the low signal issues, and line-of-sight for the satellites.

Forking out $800 for an HU with a possible adapting harness, without CANBUS working since 2004 is on 1.6 rather than 1.8 and older, that's $350 to $400 wasted. I like to play with my Eggie, and I'm a DIYer. Time to pull out the tools.

Not sure who else has the T1 series, but, it treats us well. Wife loves it. Can't say my bank accounts agree.

 

[marshatherton]

BTW, we found a head unit that plugs and plays with the digital amplifier. No splicing, no cutting needed. I have sound from all of the 11 speakers.

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