Leslie 44W / 46W preset

Verified · 88/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

This is the tube amplifier for the Leslie 44W and 46W organ speaker cabinets; the schematic gives 46W voltages in parentheses. It is an organ amp, not a guitar amp. A 6SN7 phase inverter drives four 6V6 output tubes, with a 5U4GB rectifier and a brake/relay rotor control, much like the 21H amp.

• Made in: USA
• Channels: 1
• Preamp tubes: 1× 6SN7
• Power tubes: 4× 6V6

Tags: american, vintage, 6v6, clean.

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.