[alextaha1988]

Hello guys,

I am trying to install a new HU and the guys from Crutchfield: Car Stereo, Speakers, Home Theater, Pro Audio, 4k TV are saying I need to run new wires to the speakers despite having a harness.

Apparently I must bypass the existing AMP. I am not understanding why is this the case ?

Thanks

 

[efair]

Because the head units they sell are not, for the most part, compatible with the MB factory amps. The entire MOST architecture never reached critical mass in the aftermarket IMHO. There are some, but Crutchfield tries to move merchandise that sell the most. I love Crutchfield BTW.

There are lots of posts here related to swapping the R171 head units and/or amps, try searching. Unless you have compelling reasons, the Crutchfield advise is probably correct.

One thing is for sure: replacing the head unit has lot of variables, including what factory setup you currently have installed, steering wheel control, instrument cluster integration, tele-aid, antenna integration, and I'm sure others I'm forgetting.

 

[alextaha1988]

i am looking at this which someone posted

https://www.dropbox.com/s/42w8a5uik2squlp/Dietz.xls

here

http://www.slkworld.com/576881-post249.html

and it seems to me i can just get the metra, connect to the player and done! i dont care about all the other systems, i just want audio... nowhere did this poster say he had to rewire to the speakers....

Does not the amp take a simple analog signal which will be the same as whatever player I get can output (right left)

 

[nguyenphananh]

Hello guys,

I am trying to install a new HU and the guys from Crutchfield: Car Stereo, Speakers, Home Theater, Pro Audio, 4k TV are saying I need to run new wires to the speakers despite having a harness.

Apparently I must bypass the existing AMP. I am not understanding why is this the case ?

Thanks

they are dead wrong. You have the Audio 20, which doesn't have the separate amp. Just connect through the harness as usual. Separate amp only apply for cars with COmand system

 

[adrose]

Iput in a Kenwood recently with their free harness,works perfectly EXCEPT great power out on HD radio,maybe 75% with Sirius......did NOT bypass amp.

 

[efair]

The OP has an R171, not R170; and it's unclear yet which audio system he has from the factory.

 

[nguyenphananh]

The OP has an R171, not R170; and it's unclear yet which audio system he has from the factory.

OP posted on another thread, and according to his data card... he has Audio 20
:wink:

 

[alextaha1988]

thanks guys, I think I will go for it and order, I will take the DIY route and then post my experience (hopefully it won't be much)

So cars like mine, do they have an amp at all? I now know they don't have one that is wired via fibre optics, but is there an amp sitting somewhere which I can upgrade?

 

[Seanhump]

thanks guys, I think I will go for it and order, I will take the DIY route and then post my experience (hopefully it won't be much)

So cars like mine, do they have an amp at all? I now know they don't have one that is wired via fibre optics, but is there an amp sitting somewhere which I can upgrade?

No - there is no additional amp in your car.

Have fun with the upgrade

 

[alextaha1988]

thanks to all, waiting for the parts to arrive