Lots of reading about what mod is best to get better sound to Metallica.
Some ppl likes the mod of a new speaker in the cab, and som ppl prefer to add a subwoofer outside the cab.
I think whatever you choose it´s nesessary to get Metallica justice.
This game is not meant to just play their songs, you have to feel it to get the feel for it.
It feelt soo lame until I did this mod (especially the bass added).

I have a Flipper Fidelity set in my STTNG and thats great, but I wanted more of a deep bass without glassrazzle.

So I put a good subwoofer under the cab and diconnect the original bass wire´s in the cab to put in the sub´s highlvl input like shown in some threads here.
After this I wanted to upgrade the speaker panel, but couldnt find any 8 ohms speaker that match the size and spec. I then found great carspeakers that suits my needs, but they all had 4 ohm´s impedance
Well then I came up with the idea on a top-speaker to get use of 4 speakers rather than have a resistor to get the right imp (total of 16 ohm).

topper.jpg

Here you can see some more pictures of it and how it´s done.
http://galleri.pinballark.com/#!album-2

The vinyl used is half-transparent. This lets leds and flashers behind shine thru in a nice way.

/Stefan