Porsche Panamera: sound insulation and sound system

This Porsche Panamera received sound insulation of the front doors (the more affordable option) and an upgrade of the original sound system's speakers (woofers).

Customer's comment after the work:
"Hello. I want to thank you for the pleasant communication and the quality work. I regret not doing all 4 doors and speakers. There will be a chance to come back. I will recommend you to friends and leave a note on Google."