I called Zed's and asked them.I should have thought of this.The crossover go down to 80hz version 1 and 55hz version 2. So if you look at the bottom row of crossovers,if they go down to 80 its v1. 55 v2..
There doesn't seen to be any markings (to show the version) on leviathan amps.Can anybody tell me how I could verify a used leviathan is version 1,2 or 3? Thank you