Ok, I just got my NIB JP Premium last friday. Stock speakers sounded fine turned up, my wife thought they were fine, but I just can't keep my pins stock. I knew I wanted to do something special for this pin since this is by far the most expensive pin I've bought, as well as my firs NIB pin.
First, I usually upgrade the stock speakers to make the the unique sounds stock speakers can't deliver but I chose a whole system after PinWoofer emailed me after I was looking about adding an external sub. I bought the PinWoofer powered super kit that has 5 1/4" backbox speakers, 8" sub, and amps for both cabinet and backbox. Install took about an hour. My only complaint is that the instructions were not as straight forward as it could be, i.e. step 1, 2, 3, etc. You were given instructions to install all components, but had to follow a path using a few files in a specific order. After talking with Dan, he is looking into streamlining the process to be more intuitive.
After the install, and a very short time using the volume controls on the two amps to get the sound I wanted, WOW! The 100 watt powered sub shakes and vibrates the pin way more thrilling than a shaker could. The new backbox, turned up about 50% on my pin, sounds crystal clear and WOW, the sound is amazing. There are so many other sounds I can hear now that my Premium version speakers could not produce. Dan said the amp for the backbox speakers is a little overkill, but I say different, I think it is perfect!!!! Not only does this system sound amazing, and is so much more than just a speaker replacement, it makes this pinball even more immersive with every sound the computer can put out. Now I really can't wait for those guys making the custom audio for the pin with all the movie call outs. This game is amazing, and with this powerful sound, it just goes over the top. I
f you want more, and the best, I'd suggest this kit for all your pins, especially with ones that have quality sound packages and or pinsound boards with their amazing sound packages installed