Joined the club this weekend with an LZ Premium. I have my spare set of hardware at the powdercoater (Candy Raspberry) and I hope that I get it back this upcoming week.
I immediately did what I do on all of my spike pins. I completely "overhauled" the sound system.
In a nutshell. I use the pinsound adapter which gives a low-level out from stock amp.
- I unplug the speakers from the stock amp
- I buy a compact class D 2x300W amp and run the low-level backbox speaker out to this amp
- I use the speakerlights combo kit (upgrades to 5-1/4" speakers)
- Install coaxial speakers. In this case I used JL Audio C2-525x (went a little higher end for LZ Prem as these are ~$300 speakers)
- Run the sub low level out to an external powered sub
A/V is my other hobby and I like clean sound. Grabbing and amplifying the sound before it hits the Stern amp is the right way to go for this. I am not knocking the methods others use but for me, (key point is "for me") all of the other sound upgrades are not worth it because you are still using the stock Stern amp, which is really not good.
After the upgrade, the game sounds fantastic. I had a local collector over (person who bought my JP Pro to make room for LZ Prem) and he spoke highly of the sound and has embarked to do the same on his pins.
I will probably put together a write-up on how to do this. There really is no comparison before and after the upgrade. Truly a day/night difference.