I have berg cabs but dont understand the 2.8v/1m . SWR and others are 1w/1m . so in laymans terms where do cabs stack up as far as volume? Lets say in the 410 range and arround 800-1200 watts. Eden cabs are loud, acme cabs are quiet, where do berg, epifani, EA, swr, ebs, aguilar and others fall in line with all things being equell?