Leslie Speakers

These are amplified speakers. You will need a preamp unit. Both of these Leslie speakers expect a 20W input from another small amplifier. Leslie sold a "Leslie pre-amp". These Leslies are an 8 Ohm speaker load. If you had a small amplifier (< 20W) you could disconnect the amplifier's 8 Ohm speaker and connect it to the input of the Leslie Speakers.

The Leslie 145 is a classic sound for guitars. The Leslie 820 has a lot more bass range than the 145. They have the same speaker. The extended bass range of the 820 is from the amplifier and not the speaker.

Leslie Speaker 145/147 (40W, all tube amp)

Manual  Shop Notes


Leslie 145/147 Checking for Shorts Part 1: Overview
Leslie 145/147 Checking for Shorts Part 2: Capacitor Checking
Leslie 145/147 Amplifier Fuse Location
Leslie 147 Speaker Measurements
Leslie 147 Plug: RF Capacitors
Leslie 145/147 Speakers and Operation
Leslie 145/147 Crossover Circuit Location
Leslie 145/147 The OC3
Leslie 145/147 Output Transformer
Leslie 145/147 Choke
Leslie 147 Sound Check
Leslie 145/147 Diode Check
Leslie 145/147 Power Capacitor Replacement
Leslie 145/147 Checking for Shorts Part 2: Capacitor Checking
Leslie 145/147 "Motor Break"

Leslie Speaker 820 (60W, all solid state amp)

Manual    Shop Notes


Leslie 820 YouTube Videos

Leslie Model 820 Project Introduction
Leslie 820 Features
Leslie 820 Drum and Motor Speed
Leslie 820 Sound Check
Leslie 820 Control Cable
Leslie 820 Motor Test
Leslie 820 Fuse Holders
Leslie 820 Solder and Fuse Repair
Leslie 820 vs 147 Speaker Measurement
Leslie 820 with Bass Guitar