It is a decade back people were bounded by the deadlines that are decided on the work that is assigned to them. Now they always want a break from the work post completing a milestone in a lengthy project or else after completing the main project itself. So, this break is most precious for everyone to get rejuvenated and hence everything should be well planned. Nothing should stop you from enjoying every minute. What if suddenly the car music system gets into trouble? This definitely is a big disappointment as you would not have planned an alternative for this as you are confident that your existing car music system would suffice. But, what about the loud sounds that are needed to play near the waterfalls that make a lot of music of its own type.
So, better give preference to the car audio generated by the best quality woofer. Where to get it? Who should get it when everyone are busy with packing their bags quickly within the short time they have after the project went live? This should not be seen as a challenge as the online store would let you pick the best model. You could make a decision after you having read all the technical details about the product. You are free to choose the mode of payment as well so that buying the woofer would not overburden you. Since you have a vacation ahead you are set free to buy it on credit card. Post the vacation, you could manage paying back for it through repaying the credit card bill on which enough buffer time is given.
So, with simple decision to buy the powerful woofer that assures best performance you could make yourself ready for the next assignment. No questions that you would look like a fresher at the work space post vacation with the new energy and increased interest to learn new things.