Ampeg BA-115 preset

Verified · 92/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Ampeg BA-115 is a solid-state bass combo with a 15-inch speaker, drawn in 1999 at St. Louis Music. Inputs at 0 dB and -15 dB feed a TL072 op-amp preamp with volume, a Style switch that selects between three filtered voicings, and active high, mid and low EQ into a master. An optocoupler limiter guards a complementary MOSFET output pair, with CD input, balanced XLR line out and a headphone jack.

• Wattage: 100W
• Channels: 1

Tags: american, bass, solid-state, high-wattage.

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.