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Featured mig-l manuals
MIG-L Tube Preamp for Leslie Organ Speakers Installation Guide
The MIG‑L tube preamp adds a tube‑like overdrive stage to solid‑state Leslie organ speakers, using a miniature Russian 1SH18b tube and a FET‑based overdrive circuit. It is powered from the Leslie’s existing +28 V supply and fits behind the input gain pot of the active crossover board.
The document details installation steps, wiring, adjustment procedures, remote‑switching for the MIG‑LR version, and optional modifications. It also offers advice for adapting the circuit to Leslie clones and provides component values for gain and output tuning.
Covers: What makes the "Tube Leslie Sound"? · The Solution: MIG-L · Installation · Adjustment · Remote switching (MIG-LR only) · Modifications
Latest mig-l manuals
MIG-L Tube Preamp for Leslie Organ Speakers Installation Guide
Installation Guide 7 pages · 362 KB · ENGuide for installing and adjusting the MIG-L tube preamp to add tube overdrive to solid‑state Leslie organ speakers.
Which document do I need?
Installation Guide
Mounting, wiring and first power-up. Read it before the hardware goes in.
Questions answered in mig-l manuals
What supply voltage does the MIG‑L need?
The MIG‑L is powered from the Leslie’s active crossover board with a +28 V supply.
From: MIG-L Tube Preamp for Leslie Organ Speakers Installation Guide
What input level is required for the MIG‑L to produce full tube overdrive?
About 1 Vrms input is needed for the MIG‑L to reach full distortion.
From: MIG-L Tube Preamp for Leslie Organ Speakers Installation Guide