Related Manuals for Stage Accompany EFFICIENCY SERIES ES 20
Summary of Contents for Stage Accompany EFFICIENCY SERIES ES 20
- Page 1 ES 20 USER MANUAL stage accompany EFFICIENCY SERIES ES 20 High Efficiency Power Amplifier User Manual...
- Page 2 The information is provided on an “as-is” basis. New Stage Accompany B.V. shall have neither liability nor responsibility to any person or entity with respect to any loss or damages in connection with or arising from the information contained in this manual.
- Page 3 ES 20 USER MANUAL stage accompany Table of Contents Quick Introduction to the ES 20 Introduction Connections Operation Recommendations Technical Specifications Warranty Overview...
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Page 4: Table Of Contents
ES 20 USER MANUAL stage accompany Table Of Contents Quick Introduction to the ES 20 ....... . . Introduction . -
Page 5: Quick Introduction To The Es
ES 20 USER MANUAL stage accompany 1 Quick Introduction to the ES 20 Thank you for choosing a Stage Accompany Power Amplifier. Making this choice has guaran- teed you many years of troublefree amplification. If you have to start using the ES 20 straight away and do not have time to read the complete manual, make sure that you at least read the following: •... -
Page 6: Introduction
ES 20 USER MANUAL stage accompany 2 Introduction The Stage Accompany ES 20 is a dual channel, high efficiency power amplifier and comprises the following components: • Balanced input stages. Two high efficient amplifiers which deliver each 500 Wrms into 8 Ω, 770 Wrms into 4 Ω •... - Page 7 ES 20 USER MANUAL stage accompany DC Fan The built in DC fan has a continuous variable speed. Its control circuit monitors the temperature of the output devices and the temperature of the power supply. The speed of the fan is calculated out of this information.
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Page 8: Mains Power Connection
ES 20 USER MANUAL stage accompany 3 Connections Only three connections need to be made: mains power, audio input signals, and loudspeaker leads. Do not make any connections to the amplifier or to any preceding equipment with the amplifier switched on! Mains Power Connection The ES 20 is internally selectable for 110-120/220-240V 50/60Hz mains voltage. - Page 9 ES 20 USER MANUAL stage accompany This will prevent unnecessary power loss in the mains cables. If circumstances do not allow this, it is advisable to connect the adapter block directly to the power supply using a short cable and then connect the individual ES 20s to it using longer leads. Although this method is not ideal, it does limit power loss as much as possible.
- Page 10 ES 20 USER MANUAL stage accompany G * 60 Maximum Length (ML) = The two input variables are: number of ES 20s supplied through the cable cable gauge in square millimeters For 110-120 V models the following formula applies: G * 15 Maximum Length (ML) = This means that the cable length is proportional to the cable gauge, while it is inversely proportional to the number of ES 20s supplied through the cable.
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Page 11: Audio Connections
ES 20 USER MANUAL stage accompany Cable Gauge (mm 220-240 V 10.0 16.0 ES 20s Table 3-3 Maximum cable length as a function of the cable gauge and the number of ES 20s supplied through the cable. Audio Connections The XLR connectors (audio in and audio link) of the ES 20 are wired as follows: Pin 1 = ground Pin 2 = normal phase (signal+ or “hot”) Pin 3 = inverted phase (signal- or “cold”) -
Page 12: Loudspeaker Connections
ES 20 USER MANUAL stage accompany Loudspeaker Connections Due to the DDC feature, the ES 20 has 4 output terminals per channel instead of 2. The speakon connector is wired as follows: Pin 1+ = “hot” or Signal+ Pin 1- = “cold” or Signal- Pin 2+ = “DDC hot”... - Page 13 ES 20 USER MANUAL stage accompany If you don’t want to use the DDC feature at all, the DDC and the signal leads should be linked at the amplifier output in the speakon connector (see figure 3-4). The DDC terminals can also be left unconnected but then the performance will be less.
- Page 14 ES 20 USER MANUAL stage accompany When more speakers are going to be connected to one amplifier, split the output and DDC leads as soon as possible behind the output terminals of the ES 20 (see figure 3-7 on this and figure 3-8 on the next page).
- Page 15 ES 20 USER MANUAL stage accompany SPEAKON NL4FC Figure 3-8 Correct way of connecting several enclosures to the ES 20 The amplifier can cope with any load of 2 Ω or higher. This means that you may connect a maximum of two 4 Ω, four 8 Ω, or eight 16 Ω loudspeakers per channel in parallel. Linking the loudspeakers from one enclosure to another has two major disadvantages: 1.The loudspeaker cable from the amplifier to the first enclosure conducts the current for all enclosures, which means extra losses.
- Page 16 ES 20 USER MANUAL stage accompany An indication of the proportional cable power loss (percentage of the amplifier’s total output power) can be calculated using the following formula: Proportional Power Loss = 29.4 * G * R where the variables represent: cable length in meters cable gauge in square millimeters DC resistance of the loudspeaker(s) in ohms...
- Page 17 3-10 ES 20 USER MANUAL stage accompany Cable Gauge (mm 8 Ω 10.0 16.0 Cable Length 10.2 12.4 22.1 14.5 12.4 Table 3-5 Proportional power loss as a function of loudspeaker cable gauge and cable length (%). Cable Gauge (mm 4 Ω...
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Page 18: Operation
ES 20 USER MANUAL stage accompany 4 Operation After connection to the correct mains voltage, the ES 20 can be switched on using the <POWER ON/OFF> switch. The various functions of the system will now be described one after one. Input Attenuators The input attenuators consist of two 21-detent conductive plastic potentiometers. -
Page 19: Ground Lift Switch
ES 20 USER MANUAL stage accompany mode output. Ground Lift Switch If hum is audible after switching on the ES 20, the cause may be incorrect earthing of your sound system. The <GROUND LIFT> switch can be used to “lift” the connection between the system earth and the mains earth. -
Page 20: Recommendations For Optimum Use
ES 20 USER MANUAL stage accompany 5 Recommendations for Optimum Use • Ensure that the quality of the mains supply is good enough and that it can supply the required peak currents. In addition, good earthing is necessary to prevent noise, hum and safety problems. -
Page 21: Technical Specifications
ES 20 USER MANUAL stage accompany 6 Technical Specifications Input: 1.76 Vrms (+7 dBu) (full continuous power into 4 Ω) Maximum Input Level: +22 dBu 22 kΩ each leg Input Impedance: Common Mode Rejection Ratio (CMRR): > 70 dB @ 20 Hz - 20 kHz 10 Hz - 20 kHz, -0.3 dB @ 100 W into 8 Ω... - Page 22 ES 20 USER MANUAL stage accompany 1 x 1000 W RMS into 16 Ω Continuous Bridged Power Delivered: 1 x 1540 W RMS into 8 Ω 1 x 1920 W RMS into 4 Ω 1 x 1220 W into 16 Ω Peak Bridged Power Delivered: 1 x 2000 W into 8 Ω...
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Page 23: Warranty
7 Warranty New Stage Accompany B.V. warrants to the initial purchaser of each new Stage Accompany product, from the date of purchase by the original purchaser until the end of the warranty period, that the product is free of defects in materials or workmanship. - Page 24 New Stage Accompany B.V. will pay for all labour and material expenses for all repairs covered by the warranty. New Stage Accompany B.V. will not pay for the costs of shipment to the service centre or factory. However, New Stage Accompany B.V.
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Page 25: Overview
ES 20 USER MANUAL stage accompany 8 Overview...
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