LIMITED WARRANTY This product is warranted to the original consumer purchaser to be free from defects in materials and workmanship under normal installation, use and service for a period of one (1) year from the date of purchase as shown on the purchaser's receipt. The obligation of Rolls Corporation under this warranty shall be limited to repair or replacement (at our option), during the warranty period of any part which proves defective in material or workmanship under normal installation, use and service, provided the product is returned to Rolls Corporation, TRANSPORTATION CHARGES PREPAID. Products returned to us or to an authorized Service Center must be accompanied by a copy of the purchase receipt. In the absence of such purchase receipt, the warranty period shall be one (1) year from the date of manufacture. This warranty shall be invalid if the product is damaged as a result of defacement, misuse, abuse, neglect, accident, destruction or alteration of the serial number, improper electrical voltages or currents, repair, alteration or maintenance by any person or party other than our own service facility or an authorized Service Center, or any use violative of instructions furnished by us. This one-year warranty is in lieu of all expressed warranties, obligations or liabilities. ANY IMPLIED WARRANTIES, OBLIGATIONS, OR LIABILITIES, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, SHALL BE LIMITED IN DURATION TO THE ONE YEAR DURATION OF THIS WRITTEN LIMITED WARRANTY. Some states do not allow limitations on how long an implied warranty lasts, so the above limitation may not apply to you. IN NO EVENT SHALL WE BE LIABLE FOR ANY SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES FOR BREACH OF THIS OR ANY OTHER WARRANTY, EXPRESSED OR IMPLIED, WHATSOEVER. Some states do not allow the exclusion or limitation of special, incidental or consequential damages so the above limitation or exclusion may not apply to you. This warranty gives you specific legal rights, and you may also have other rights which vary from state to state. RFX147 ROTORHORN Rotating Speaker Simulator RFX Salt Lake City, UT 8/01 OWNERS MANUAL INTRODUCTION Thank you for your purchase of the RFX147 Rotorhorn. This unit is a line level rack mount signal processor for duplicating the sound of a rotating horn speaker cabinet electronically. It has a two-way crossover network to produce the effect of bass and treble "rotors". The unit is housed in a single space 19" rack painted steel chassis and is intended for live performance or studio work. The RFX147 is simple to use and is ready to work on power up. FEATURES · Accurate simulation of "Leslie" fast and slow speeds · Front panel and footswitch control of all functions · Smooth sounding CHORUS effect · Mono VIBRATO effect INSPECTON 1. Unpack and Inspect the RFX147 package If obvious physical damage is noticed, contact the carrier immediately to make a damage claim. We suggest saving the shipping carton and packing materials for safely transporting the unit in the future. 2. Please complete the Warranty Registration Card and return it to the factory. TABLE OF CONTENTS Introduction Features Inspection Table of Contents DESCRIPTION Front Panel Rear Panel CONNECTION OPERATION SCHEMATIC SPECIFICATIONS A brief history of the rotating speaker effect WARRANTY 1 Input: Output: Input Impedance: Output Impedance: Output Level: Delay Time: Crossover Freq. Size: Weight: Dual 1/4" unbalanced Dual 1/4" unbalanced 50k Ohms 100 Ohms +5 dB max 6 mS 800 Hz 19 x 1.75 x 6 inches 7 lbs SPECIFICATIONS BRIEF HISTORY OF THE ROTATING SPEAKER Electronic devices that produce a "Leslie-like" sound have been available since the sixties. Cheap solid state components and the need for more portable equipment led to the development of numerous "electronic Leslies" and tremolo-vibrato add-on devices. Few early Leslie simulators were authentic enough to fool even causal listeners and rarely sounded like a real Leslie Speaker. Most relied on simple phase-shift circuitry and their primary advantages were compactness and low cost. Current equipment is much improved and it's often difficult to tell the difference between a real Leslie and a simulator, especially on recordings. All mechanical rotary tremolo systems are based on the Doppler-effect. Discovered by Austrian mathematician and physicist Christian Doppler (1803-1853) in the early nineteenth century, the Doppler-effect is the apparent variation in pitch that a stationary listener hears from a moving sound source. In practice, the loudness of the sound also appears to vary and it is this combination of frequency (vibrato) and ampli-tude (tremolo) modulation that give rotating speaker and other Doppler-effect systems their characteristic sound. Basic Doppler characteristics are easily created electronically. However, most simulators don't reflect sound or produce the unique audio characteristics of mechanical systems. Rotating speaker elements also direct sound out the sides and back of the cabinet which is reflected off nearby walls and surfaces. The listener hears this combination of primary and reflected sound as a moving audio field. Adding a second cabinet further enhances the effect. Even when the audio source (organ) is mono, the rotating speaker elements and reflected sound create a realistic stereo effect. The RFX147 Rotorhorn simulates the Leslie speaker effect unlike any other electronic simulator by utilizing an internal crossover. This provides a way to effect the upper and lower frequencies differently much like a real rotating speaker. A more authentic effect is thus produced. 2 3 4 5 6 BACK COVER 1 6 SCHEMATIC Title: RFX147 ROTATING SPEAKER SIMULATOR Sheet 1 of 1 Rev: DESCRIPTION FRONT PANEL ROLLS CORPORATION 5968 South 350 West 84107 Salt Lake City, UT R61 1K Q4 2N4124 1458 Document Number: 10K R60 10K R74 4 .7 K 7 R59 -12V R54 22K U13A 11 9 R . X 1 4 7 .S C H Q3 2N3906 VB R57 3 .3 K 1 Date: 24 - Aug - 2001 3 CLK D 1458 R56 1U +12V 47K +12V U16B 47K 2 VDD C32 25P. D13 1N4148 U7B 4013 R55 1M DEPTH R53 Q Q P100K 5 6 R65 100K R64 470K R75 47K R58 470K R66 220K 1458 Q8 2N4124 +12V C30 .0 4 7 U13B 6 5 C36 10U 6 +12V CLK D U17B R67 100K R68 100K VB 5 R52 100K 5 3 1458 VDD R48 470K C34 .0 1 R49 100K VB R50 220K Q5 2N4124 R51 100K U7A 4013 Q 7 Q -12V 2N4124 R70 22K 3 2 Q 10 2N3904 +12V R69 47K 1 0 C35 1U. 2 P100K -12V U17A +12V Q 11 2N3904 R71 10K C19 .0 0 1 RATE P7 47K D9 1N4148 1458 -12V Q9 R30 22K +12V R28 100 R72 +12V -12V P100K P8 P100K Q 12 2N3904 R29 10K 1 R31 22K 7 8 2 6 R47 10K C29 47U. R62 10K CLK1 CLK2 O1 O2 M N3007 C21 .0 0 3 9 4560 2 22K 3 P4 50K C20 120P. -12V J6 P H O N E 1 /4 +12V C7 820P. VGG GND VDD U4B +12V U6 IN 13 14 12 R63 4 .7 K R76 4 .7 K R27 100K R196 33K 5 .0 3 9 4560 R80 100K 3 4 1 5 Q 4013 CLK VDD C8 P3 50K U12B VB C6 .0 1 1 Q 120P. +12V C22 1U. R18 33K R17 33K C23 .1 D R16 10K C17 C16 1U -12V C5 .0 0 6 8 C18 .1 9 14 15 16 .0 1 0 LM 13600 100K 8 7 11 9 LDSG U8A D6 LDSG 4 .7 K D11 D10 7 P9 Size: 13 14 12 7 P6 Rb GND THD DG RIN RC R15 8 3 2 1 4 U5B NE570 120P. THD DG RIN RC +12V GND U3A OUT C37 1U R82 10K Q7 R14 1K INV V+ +12V R84 10K R81 100K SW 3A NE570 U5A 12 10 C14 1U INV R3 OUT V+ R33 10K 13 4 3 -12V R 1 3 1K R11 +12V 10 DPDT 9 R25 22K R26 22K 5 6 7 0 BPASS 100K 11 R12 10K C25 .0 4 7 C39 .5 0 3 LM 13600 13 U3B .0 0 6 8 C4 C43 10U R34 10K SW 1A DPDT 100K 1K R9 C13 C12 .0 4 7 C26 .2 7 14 R7 1U D5 LDSG POW ER OUT VOL R36 1 4560 R35 10K 10K VB 1K 100K R6 R8 -12V U4A +12V P 1 0 P100K 7 6 5 R85 120P. R86 1K 4560 C10 .0 1 +12V R22 +12V R24 100K 2 3 U8B 1K C9 .0 1 4 .7 K U2B R37 1K R23 220K C11 R38 100K .0 1 6 5 C27 4560 7 C41 1U. ZD1 1N751A C42 10U D8 1N4148 R21 18K C28 .0 4 7 3 R5 4 .7 K C3 Q1 J113 10U O 1 7812 U10 O 3 4560 J113 Q2 +12V R39 47K U11 7912 I I -12V U12A 1 -12V 0 2 4013 U2A C44 C2 1 D7 2 3 P100K P5 1N4148 4 .7 K R46 100K R77 VDD Q R40 47K Q 1000U. 16V BYPASS D12 120P. LDRR 4560 +12V 1458 CLK C1 1U 10K R3 D U9B 1 U16A 4560 -12V D1 1N4001 Q6 2N3906 +12V R42 R78 100K 7 2 3 D2 1N4001 5 10K 1 R44 10K R4 7 3 1000U. 16V