[Pr03MVi]

Nice job @Borna529 !
More questions from my side...
I was planning to install a 4 channel amplifier, using 1 channel for Left side (Front and Rear), 1 channel for Right side (Front and Rear) and 2 channels for a subwoofer.
My doubt there is what will happen to the impedance for Left/Right channels. Would it drop to 2 Ohm because I'm connecting speakers in pararell ? So, would this show up a CEL ?

 

[Borna529]

Nice job @Borna529 !
More questions from my side...
I was planning to install a 4 channel amplifier, using 1 channel for Left side (Front and Rear), 1 channel for Right side (Front and Rear) and 2 channels for a subwoofer.
My doubt there is what will happen to the impedance for Left/Right channels. Would it drop to 2 Ohm because I'm connecting speakers in pararell ? So, would this show up a CEL ?

I am pretty sure that some other members could be more specific on impendence. If you ask me, I would use 2 channels in the "bridge mode" for the woofer and 2 channels for front (preferable) or rear speakers. Be aware that, If you go to amplify doors speakers with amplifier in the trunk, it means that signal lines have to go from the front entertainment unit to trunk and powered signals have to travel back to the front. If connecting both left and both right speakers, at least "fader" on your unit wont work properly, and parking sensors could sound strange. My advice is, don't go there, think on better quality speakers in the doors, even with crossovers at the back. Look for the quality not quantity of sound. With subwoofer and just 2 front tweeter I can tell it is hearable difference, when change other Fiat's paper cones in the doors...I mean, we should be happy with standard 4 ohms not causing trouble as HK does, playing with impedance...I am not sure that this idea would be good solution for your sound.

 

[inikkor]

Tweeters on the dashboard are 25mm in the double shell, if inner shell goes out it has space for other optional tweeters with wider dimensions. I had to "adjust" JBL tweeters to set it into the holes. Next step will be door cards removal and replacement of the original fiat paper cones speakers. At the rear doors, since both speakers are at the same panel, I will probably go with JBL with crossovers. Than this small project will be over and all related to the Base level audio DIY upgrade revealed.

Can you describe how to access the tweeters?

 

[Borna529]

Can you describe how to access the tweeters?

Sure. Turn off the radio, just in case. Use not sharp but tiny plastic parts removal tool to "dig" the net. Each speaker net has 2 main and one supporting (smaller) bucket.

Passenger side: first dig right side of the edge that is closest to let me say passenger seat. Than dig the left edge of the speaker. Third bucket will pop up and is not accessible since the plastic is tight and close to windshield. Than, when plastic is loosen, slowly pull it up and toward front seat. Be patient, it's well seated onto the board and don't break buckets.

Driver side: locations of the buckets are the same but opposite (visualize them the as in the mirror).

Than you will see connector with clip and 2 wires, one with solo color (+) and other with the same color and additional line (-). For example: Front left tweeter is Yellow (+), Yellow-Black (-) and Front right tweeter is Violet (+) and Violet-Orange (-). Unclip and pull. I hope that this will help you.:smile2:

 

[ztodd377]

Since the car is under the warranty, I took them from the back side of infotainment connectors. Except styrofoam cut at the trunk for the woofer, no "invasive" actions on the wires and no connectors removal. If you insist on removal, audio outputs connector has kind of unlock knob, as I recall. I did it that way because at that time I was not sure on electronic behavior and possible fault light on the dashboard. When done these connections, I tested contacts with old Giulietta 4 ohms 3 holes speaker (that is, I am pretty sure, the same as in Giulia Base audio level), with no faults and than I safely connected signal lines to amplifier.

Borna,
Did you just tap into 4 of the infotainment audio output wires? How did you know which ones where the correct ones?