Quoted from BladeFury:
Here is something to try if you want bass from the subwoofer to sound more accurate, tight, not so muddy and fluttery...seal off the two small ports underneath with something solid and see what you think...no disrespect to Scott or the team but I've spent half my life in Car Audio (built many custom enclosers) and the other half now in home audio. Building a subwoofer sealed gives you better control, power handling and you can get away with smaller enclosures and inconsistencies in tuning it. Ports have to be tuned, proper length, proper material to reduce port noise. No matter how good the subwoofer is, the enclosure is at least 85% of the importance of the drivers ability to reproduce accurately...
Thank you for taking the time to incorporate a subwoofer in this game as the music is Incredible Scott! It was nice not having to add another subwoofer under this machine. I might be being a little anal (reasons above lol) as it's a pinball machine but it's a pinball machine playing awesome music that helps get your heart pumping
Thank you for the kind words! This one is definitely not tuned, so I will admit that, but the reason I added the ports is that this is not a super powerful system like most are used to designing. Although, it is more powerful than other machines in the past. At first I had the box 100% sealed and it sounded good, but I could tell that the sub was struggling pretty hard. I opened the system with the ports and the sub was able to breathe better and there was a significant increase in the sound output.
I think the main issue is that in pinball machines, screens are needed to be over the ports and the sub itself. I think these screens are causing sound issues, but I am not 100% sure and unfortunately, they have to be there for commercial use.
Also, this is a HUGE step up from the open subwoofer design that most, if not all, machines used in the past. You need special open air subwoofers for application like that and those are not cheap.
I hope that explains my thoughts on this! I am definitely going to work on improving the design for my next adventure.