Peavey 500BH Powered Enclosure preset

Verified · 84/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The 500BH is a Peavey 2x10 powered bass enclosure from the early 1980s: a slave cabinet with its own solid-state amplifier, meant to extend a bass rig. Two input jacks feed a single Level control and a TL074 op-amp input stage with built-in compression sensing to guard against clipping. A discrete driver feeds two output boards of four power transistors each on +/-52 V rails, driving two 8-ohm 10-inch speakers. There are no tone controls.

• Made in: USA
• Channels: 1

Tags: american, solid-state, bass.

Schematic-derived preset files for 16 Fractal and Line 6 modelers: Axe-Fx II/XL/XL+, Axe-Fx III, FM3, FM9, and the full Helix family (Floor, LT, Rack, HX Stomp, HX Stomp XL, Native).

Gridleak extracts amp parameters from original circuit schematics using AI vision — component values, gain staging, tone stack topology, tube types — then generates native preset files for every supported modeler. Every extraction is scored 0–100 and the score is published.