Every field carries its own trust-tier: core data is confirmed by the manufacturer, peripheral data — by AI (with a source link). Safety-critical parameters (load ratings) are never published below vendor-claimed — a liability requirement.
d&b D80 (external amplifier required: «The d&b D80 amplifier is required to drive the SL-SUB and SL-GSUB», 2-Way Active, 2 channels per cabinet). Family: D80 / D40 (D-Series)