ORGAN Voice Section
155
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LESLIE®
Your Hammond SK PRO has a built-in digital Leslie effect that replicates the sound of a twin-rotor Leslie Speaker
cabinet. In addition, the SK PRO can also be used with a variety of different Leslie Speaker cabinets. There is
a full explanation of how to use the SK PRO with a Leslie Speaker cabinet starting on page 20.
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What Is A “Leslie Speaker?”
When the Hammond Organ was first introduced in the mid 30's, it was not “self-contained” - in other words, the
sound-producing apparatus was not contained within the console. In order to hear the sounds produced by the
organ’s tone generators, a separate “tone cabinet” containing an amplifier and speaker system had to be
connected to the organ console via a special cable. The Hammond Organ Company for many years
manufactured many different models of tone cabinets specifically for use with Hammond Organs. The best
known of these is probably the PR-40 model, which used a 40-watt tube amplifier to drive a set of speakers.
Hammond PR-40 Tone Cabinet
A typical Leslie Speaker cabinet.
The Hammond engineers had very definite ideas about what a Hammond Organ should sound like and the
Hammond speakers were designed to deliver that sound. In the late 30's, however, an independent engineer
and organ enthusiast named Donald J. Leslie wanted a sound from a Hammond Organ more nearly
approximating the sound of a theatre organ, particularly a realistic theatre organ tremulant. He found that
rotating a baffle in front of a stationary speaker created the effect of a tremulant (the well-known “Doppler
effect”) and called the subsequent speaker the “Vibratone.” (The “Vibratone” designation was eventually dropped
and subsequent models would be known simply as Leslie Speakers.) Over a hundred models of Leslie Speakers
have been made over the years; probably the best known being the models 122, 142, 145 and 147, all of which
have 40-watt vacuum-tube amplifiers. The122 and 147 are both 41" tall (see above photo), while the 142 and
145 are 33" tall. The 122 and 142 have the same electronics, as do the 145 and 147.
Although the 122 and 147, as well as the 142 and 145, share identical cabinet designs, they are electrically
dissimilar - the 122/142 is designed specifically for use with a Hammond Organ whose preamplifier has “GG”
terminals (a “balanced” signal output), whereas the 147/145 has an “unbalanced” input more suitable for use
with self-contained organs - other brands as well as Hammond. Additionally, the 122 and 147 have different high-
frequency responses - the 122 rolls off the treble at 6K to reduce key click, while the 147 does so at 8K, resulting
in a slightly brighter overall sound.
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SK PRO Reference Guide
Summary of Contents for Sk PRO
Page 1: ...REFERENCE GUIDE...
Page 2: ......
Page 4: ......
Page 5: ...TABLE OF CONTENTS...
Page 18: ...THIS PAGE INTENTIONALLY LEFT BLANK TO PRESERVE PAGE FORMATTING HA O SK PRO Reference Guide...
Page 19: ...INTRODUCTION...
Page 28: ...THIS PAGE INTENTIONALLY LEFT BLANK TO PRESERVE PAGE FORMATTING HA O SK PRO Reference Guide...
Page 29: ...INFORMATION CENTER DISPLAY...
Page 45: ...ALLOCATING VOICE SECTIONS...
Page 54: ...THIS PAGE INTENTIONALLY LEFT BLANK TO PRESERVE PAGE FORMATTING HA O SK PRO Reference Guide...
Page 55: ...COMBINATIONS PATCHES BUNDLES FAVORITES...
Page 137: ...ORGAN VOICE SECTION...
Page 200: ...THIS PAGE INTENTIONALLY LEFT BLANK TO PRESERVE PAGE FORMATTING HA O SK PRO Reference Guide...
Page 201: ...3PART ORGAN...
Page 209: ...UPPER PERCUSSION...
Page 215: ...PIANO ENSEMBLE VOICE SECTIONS...
Page 290: ...THIS PAGE INTENTIONALLY LEFT BLANK TO PRESERVE PAGE FORMATTING HA O SK PRO Reference Guide...
Page 291: ...MONO SYNTH VOICE SECTION...
Page 344: ...THIS PAGE INTENTIONALLY LEFT BLANK TO PRESERVE PAGE FORMATTING HA O SK PRO Reference Guide...
Page 345: ...CUSTOM SETS...
Page 396: ...THIS PAGE INTENTIONALLY LEFT BLANK TO PRESERVE PAGE FORMATTING HA O SK PRO Reference Guide...
Page 397: ...MULTI EFFECTS OVERDRIVE EQUALIZER...
Page 472: ...THIS PAGE INTENTIONALLY LEFT BLANK TO PRESERVE PAGE FORMATTING HA O SK PRO Reference Guide...
Page 473: ...SPECIAL PERFORMANCE FEATURES...
Page 504: ...THIS PAGE INTENTIONALLY LEFT BLANK TO PRESERVE PAGE FORMATTING HA O SK PRO Reference Guide...
Page 505: ...MIDI incl INT EXT ZONES...
Page 511: ...MIDI 493 MIDI Templates SK PRO HA O SK PRO Reference Guide...
Page 512: ...MIDI 494 MIDI Templates SK PRO HA O SK PRO Reference Guide...
Page 547: ...SPECIAL UTILITY FEATURES...
Page 567: ...Special Utility Features 549 t SYSTEM PARAMETER LIST HA O SK PRO Reference Guide...
Page 568: ...THIS PAGE INTENTIONALLY LEFT BLANK TO PRESERVE PAGE FORMATTING HA O SK PRO Reference Guide...
Page 569: ...USING MEMORY...
Page 591: ...APPENDIX...
Page 592: ...Appendix 574 APPENDIX u FACTORY COMBINATIONS HA O SK PRO Reference Guide...
Page 593: ...Appendix 575 u COMBINATION PARAMETERS HA O SK PRO Reference Guide...
Page 594: ...Appendix 576 HA O SK PRO Reference Guide...
Page 595: ...Appendix 577 u ORGAN PATCHES HA O SK PRO Reference Guide...
Page 596: ...Appendix 578 u ORGAN PATCH PARAMETERS HA O SK PRO Reference Guide...
Page 597: ...Appendix 579 HA O SK PRO Reference Guide...
Page 598: ...Appendix 580 u PIANO ENSEMBLE PATCHES HA O SK PRO Reference Guide...
Page 599: ...Appendix 581 HA O SK PRO Reference Guide...
Page 600: ...Appendix 582 HA O SK PRO Reference Guide...
Page 601: ...Appendix 583 u PIANO ENSEMBLE PATCH PARAMETERS HA O SK PRO Reference Guide...
Page 602: ...Appendix 584 HA O SK PRO Reference Guide...
Page 603: ...Appendix 585 u PIANO ENSEMBLE WAVEFORM LIST HA O SK PRO Reference Guide...
Page 604: ...Appendix 586 u MONO SYNTH PATCHES HA O SK PRO Reference Guide...
Page 605: ...Appendix 587 u MONO SYNTH PATCH PARAMETERS HA O SK PRO Reference Guide...
Page 606: ...Appendix 588 u PIPE ORGAN STOPS u ProChord VOICINGS HA O SK PRO Reference Guide...
Page 609: ...Appendix 591 u CUSTOM SETS HA O SK PRO Reference Guide...
Page 611: ...Appendix 593 u CUSTOM LESLIE PARAMETERS HA O SK PRO Reference Guide...
Page 612: ...Appendix 594 u SYSTEM PARAMETERS HA O SK PRO Reference Guide...
Page 613: ...Appendix 595 FAVORITES HA O SK PRO Reference Guide...
Page 614: ...Appendix 596 u MIDI TEMPLATES HA O SK PRO Reference Guide...
Page 615: ...Appendix 597 HA O SK PRO Reference Guide...
Page 616: ...Appendix 598 u MIDI INFORMATION HA O SK PRO Reference Guide...
Page 617: ...Appendix 599 u MIDI IMPLEMENTATION CHART HA O SK PRO Reference Guide...
Page 618: ...Appendix 600 u MIDI CHANNELS AND MESSAGES HA O SK PRO Reference Guide...
Page 622: ...Appendix 604 u DRAWBAR DATA LIST u SYSTEM EXCLUSIVE MESSAGES HA O SK PRO Reference Guide...
Page 624: ...2021 Hammond Suzuki USA Inc HA O SK PRO Reference Guide FM2330 1021...