This sound upgrade package just came out on Hyundai DE Accessories website for i30N. 
(link)
It consists of a set of 4 speakers, ring adapters and an amplifier:
Pioneer TS-G1730F (link)
Pioneer TS-A173Ci (link)
Pioneer GM-D1004 (link)
According to Hyundai, requires 2 hours to be installed, comes with standard two year warranty and costs 311 EUR to get it in the mail.
Guesstimating plus 200 EUR for installation, this upgrade would cost around 500 EUR.
Amazing, as I was looking into something like that, and it suits everyone that wanted to simply plug in a subwoofer to this!



(link)
It consists of a set of 4 speakers, ring adapters and an amplifier:
Pioneer TS-G1730F (link)
Pioneer TS-A173Ci (link)
Pioneer GM-D1004 (link)
According to Hyundai, requires 2 hours to be installed, comes with standard two year warranty and costs 311 EUR to get it in the mail.
Guesstimating plus 200 EUR for installation, this upgrade would cost around 500 EUR.
Amazing, as I was looking into something like that, and it suits everyone that wanted to simply plug in a subwoofer to this!
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