User Manual here - Stage Accompany Norge
Contents
1. 2 Introduction The Stage Accompany ES 40 is a dual channel high efficiency power amplifier and comprises the following components e Balanced input stages e Individual power supplies for both channels e Two high efficient amplifiers which deliver each 1000 Wrms into 8 Q 1470 Wrms into 4 Q and 1810 Wrms into 2 or 1240 W peak into 8 Q 2000 W peak into 4 Q and 2850 W peak into 2 Q e Advanced protection circuits H NOLLONCOYLNI The audio inputs and link outputs are connected internally without electronics This is done to prevent any loss of sound quality With an input impedance of 22 kQ it is possible to connect a maximum of 30 ES 40s to a 600 source like the SA 1310 graphic equaliser If more than 30 units need to be connected to a single source a separate signal driver must be used The ES 40 is protected against the connection of speaker impedances less than 2 Q or even short circuiting of the output In these cases the output current is limited but the amplifier keeps working The ES 40 has a number of features including e High efficiency class G operation e Active Clip Eliminator ACE e Variable speed DC fan e Dynamic Damping Control DDC e Front accessible Extended Function Network EFN e Soft start to reduce power on inrush current e Temperature DC HF and short circuit protection A NEW WORLD OF SOUND ELY ES 40 USER MANUAL O stage accompany Class G operation The power supply2. DC or subsonic energy is de tected at the output of the amplifier and that the amplifier is decoupled from the output connectors This also occurs when the amplifier is switched on and the electronic cir cuits need time to stabilise Approximately three seconds after you turn on the ES 40 these LEDs should turn off 3 HF on input This indicates that high frequencies are detected on the inputs In this case check your input cables It is also possible that the signal from any preceding ap paratus contains oscillations When the Protect LEDs light during normal use and the amplifier is not hot check the following things Disconnect the input signal connectors When the LED s switch es off high frequencies where probably present on the inputs When this does not solve the problem you may try disconnecting the speaker system When the LED s switch es off the DDC was probably not properly connected When neither of this solves the problem the amplifier is probably damaged and should be repaired by an authorised Stage Accompany service centre A NEW WORLD OF SOUND ES 40 USER MANUAL O stage accompany In bridge mode all channel 2 indicators are switched off and a separate bridge mode indicator is lit The ES 40 now operates as a single channel amplifier using only the channel 1 indicators controls inputs and outputs E NOLLVy43dO A NEW WORLD OF SOUND ELY ES 40 USER MANUAL O stage accompany 5 Re
3. Q lt 0 3 20 Hz 20 kHz more than 2 Q load at all powers 1 dB below clipping lt 0 007 1 kHz 100 W into 8 Q lt 0 05 20 kHz 100 W into 8 Q lt 0 06 200 Hz 20 kHz F1 70 Hz 4 1 100 W into 8 Q gt 110 dB A weighted gt 40 V us 8Q 10 000 1 kHz 10 V across 8 Q 2 x 1000 W into 8 Q 2 x 1470 W into 4 Q 2 x 1810 W into 2 Q 2 x 1240 W into 8 Q 2 x 2000 W into 4 Q 2 x 2850 W into 2 Q A NEW WORLD OF SOUND SNOILLVIIIO3IdAS EN ES 40 USER MANUAL stage accompany Continuous Bridged Power Delivered Peak Bridged Power Delivered Mains Supply Voltage Power consumption typical Idle 1 8 Power pink noise 2 Q Weight Housing Dimensions h x w x d 1 x 2000 W into 16 Q 1 x 2940 W into 8Q 1 x 3620 W into 4 Q 1 x 2480 W into 16 Q 1 x 4000 W into 8 Q 1 x 5700 W into 4 Q internally switchable 110 120 220 240 VAC 100 VA 2800 VA 34 8 kg 77 lb 19 in rack mount 3 HU high 440 mm 17 3 in deep behind the mounting surface without connectors 133 x 482 x 445 mm without connectors and rack handles 5 25 x 19 0 x 17 5 in SNOILLVIIIO3IdAS A NEW WORLD OF SOUND ELY ES 40 USER MANUAL O stage accompany 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
4. of the ES 40 amplifier produces 2 different supply levels Each channel actually consists of two power amplifiers One produces the output signal the other one selects the power supply voltage This way the ES 40 uses the low level supply at low output power and the high level supply at high output power which reduces internal dissipation significantly ACE The Active Clip Eliminator circuit ACE in the ES 40 constantly monitors both power amplifiers for continued clipping When clipping is detected the input level of the related channel is inaudibly reduced to the safest maximum level This feature prevents harmonics damaging your sound quality and high frequency drivers and also protects the amplifier from running hot 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 supplies The speed of the fan is calculated out of this information This system ensures that the fan always runs at optimum speed and thus produces less noise DDC Dynamic Damping Control DDC is a special way of measuring the cone movement of a loudspeaker The voltage induced in the voice coil is sensed and fed back to the amplifier s feedback circuit Hence a virtually infinite damping is achieved which results in an exceptionally tight sound reproduction EFN Through the Extended Function Network EFN with plug in modules extra functions can be add
5. you have a reliable well earthed power source The required current for the ES 40 can be found in the table in paragraph 3 1 e Connect the ES 40 to your signal sources via the lt INPUT gt connectors Connect this amplifier to other units via the lt LINK gt outputs using short signal leads Connect your single signal source to the channel 1 input and your speaker system to the channel 1 output if you use the ES 40 in bridge mode NOILONGOULNI AD9INO e Never make connections to the amplifier or to any preceding equipment with the ampli fier switched on Important When combining ES 40s with a Stage Accompany Blue Box system you must take into account thatthe low frequency loudspeaker of the Blue Box has an excursion opposite to that of a normal speaker amplifier combination The Blue Boxes in combination with the ES 40s have to be switched to inverted phase or cross cables for ES 40s or Blue Boxes have to be used e Switch the ES 40 on using the lt POWER ON OFF gt switch If you want to use the ES 40 in bridge mode set the lt MODE gt switch at the back of the amplifier in the lt BRDG MODE gt position e Select the desired input sensitivity by means of the lt INPUT ATTENUATORS gt In bridge mode only use the channel 1 attenuator e Any hum that may be present may be solved with the lt GROUND LIFT gt switch The ES 40 is now ready for use A NEW WORLD OF SOUND ES 40 USER MANUAL O stage accompany
6. 1 4 1 1 0 7 0 4 0 3 Cable Length 30 4 1 2 5 2 1 1 6 1 1 0 6 0 4 m 40 5 4 3 3 2 8 2 1 1 4 0 8 0 5 50 6 6 4 1 3 4 2 6 1 7 1 1 0 7 100 12 4 7 8 6 6 5 0 3 4 2 1 1 3 Table 3 4 Proportional power loss as a function of loudspeaker cable gauge and cable length A NEW WORLD OF SOUND an o MELIANA stage accompany Cable Gauge mm 8 Q 1 5 2 5 3 0 4 0 6 0 10 0 16 0 20 5 4 3 3 2 8 2 1 1 4 0 8 0 5 Cable Length 30 7 8 4 9 4 1 3 1 2 1 1 3 0 8 m 40 10 2 6 4 5 4 4 1 2 8 1 7 1 1 50 12 4 7 8 6 6 5 0 3 4 2 1 1 3 100 22 1 14 5 12 4 9 6 6 6 4 1 2 6 5 O Table 3 5 Proportional power loss as a function of loudspeaker cable gauge and cable length 5 a Cable Gauge mm S id 1 5 2 5 3 0 4 0 6 0 10 0 16 0 20 10 2 6 4 5 4 4 1 2 8 1 7 1 1 Cable Length 30 14 5 9 3 7 8 6 0 4 1 2 5 1 6 m 40 18 5 12 0 10 2 7 8 5 4 3 3 2 1 50 22 1 14 5 12 4 9 6 6 6 4 1 2 6 100 36 2 25 4 22 1 17 5 12 4 7 8 5 0 Table 3 6 Proportional power loss as a function of loudspeaker cable gauge and cable length Cable Gauge mm 20 1 5 2 5 3 0 4 0 6 0 10 0 16 0 10 10 2 6 4 5 4 4 1 2 8 dez 1 1 20 18 5 12 0 10 2 7 8 5 4 3 3 2 1 Cable Length 30 25 4 16 4 14 5 11 3 7 8 4 9 3 1 m 40 31 2 21 4 18 5 14 5 10 2 6 4 4 1 50 36 2 25 4 22 1 17 5 12 4 7 8 5 0
7. 100 53 1 40 5 36 2 29 8 22 1 14 5 9 6 Table 3 7 Proportional power loss as a function of loudspeaker cable gauge and cable length A NEW WORLD OF SOUND ES 40 USER MANUAL O stage accompany 3 4 Installing the EFN Because the ES 40 features the front accessible Extended Function Network the amplifier does not have to be opened nor does it have to be removed from its rack to install the EFN circuits To re place the EFN board s switch off the amplifier and remove the EFN lid on the front of the ES 40 and simply plug in the EFN modules The upper one is intended for channel 1 or bridge mode operation the lower one is intended for channel 2 It should be noted that the standard loudspeaker protection boards are not suitable for bridge mode operation Make sure you switch the adjacent switch es to the lt ON gt position otherwise the EFN boards are bypassed Afterwards put the lid back in its original position 5 SNOILOANNOO A NEW WORLD OF SOUND ES 40 USER MANUAL O stage accompany 4 Operation After connection to the correct mains voltage the ES 40 can be switched on using the lt POWER ON OFF gt switch The various functions of the system will now be described one after one 4 1 Input Attenuators The input attenuators consist of two 21 detent conductive plastic potentiometers 11 of the detents are calibrated in dB The attenuators are used to mute the input signal or to adjust the
8. ANUAL stage accompany Shipment of the product to an authorised Stage Accompany service centre is at the risk and responsibility of the customer 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 will pay for the costs of return shipment to the customer if repairs are covered by warranty Caution Warranty work can only be performed at authorised Stage Accompany service centres or at the Stage Accompany factory Every repair or attempted repair by a non authorised party will void the warranty New Stage Accompany B V reserves the right to alter specifications without prior notice E ALNVYYVM A NEW WORLD OF SOUND ELY ES 40 USER MANUAL O stage accompany 8 Overview EXTENDED FUNCTION NETWORK o gt a 8 ai 35 Os a we Ei ne Gain control Channel 1 Bridge mode Indicators Channel 1 Bridge mode Indicators Channel 2 Gain control Channel 2 Power switch Channel 2 input Channel 2 input link Bridge mode switch Channel 1 input link Channel 1 Bridge mode input AC mains cable Channel 2 outputs Fuses Channel 1 Bridge mode outputs Ground lift switch E MAIAYAAO MOQOOBOQOOQO OOOVO A NEW WORLD OF SOUND
9. ES 40 USER MANUAL stage accompany EFFICIENCY SERIES ES 40 High Efficiency Power Amplifier User Manual A NEW WORLD OF SOUND ELY ES 40 USER MANUAL O stage accompany Published by New Stage Accompany B V Training amp Documentation Anodeweg 4 1627 LJ Hoorn The Netherlands Copyright 2000 by New Stage Accompany B V All rights reserved No part of this manual may be reproduced or transmitted in any form or by any means electronically or mechanical without written permission from New Stage Accom pany B V except for the inclusion of brief quotations in a review First printing August 2000 Printed in The Netherlands This manual is intended to provide information about the Stage Accompany ES 40 Every effort has been made to make this manual complete and as accurate as possible However no warranty of suitability purpose or fitness is implied 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 New Stage Accompany B V reserves the right to alter specifications without prior notice A NEW WORLD OF SOUND EN ES 40 USER MANUAL stage accompany Table of Contents Quick Introduction to the ES 40 Introduction Connections Operation Recommendations Technical Specificatio
10. NL4FC Figure 3 5 Dangerous ES 40 output connection SPEAKON NL4FC Figure 3 6 Dangerous ES 40 output connection A NEW WORLD OF SOUND uN ES 40 USER MANUAL O stage accompany When more speakers are going to be connected to one amplifier splitthe output and DDC leads as soon as possible behind the output terminals of the ES 40 see figure 3 7 on this and figure 3 8 on the next page SPEAKON NL4FC 5 SNOILOANNOO Figure 3 7 Try to avoid this way of connecting several enclosures to the ES 40 A NEW WORLD OF SOUND uN ES 40 USER MANUAL stage accompany SPEAKON NL4FC T t2 in g SNOILOANNOO Figure 3 8 Correct way of connecting several enclosures to the ES 40 The amplifier can cope with any load of 2 Q or higher This means that you may connect a maximum of two 4 Q four 8 Q or eight 16 Q 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 2 The DDC only works for the first enclosure Splitting the leads at the amplifier ou
11. bulated for two selectable mains voltages The power consumption shown applies to 1 8 of maximum output power pink noise in 2 Q which is representative for typical music program with occasional clipping If your speaker system has an impedance of 4 or 8 Q you may multiply the currents by 0 5 or 0 25 5 SNOILOANNOO Mains Voltage V No ES 40s 110 120 220 240 Current Consumption A 1 24 12 2 48 24 3 72 36 4 96 48 5 120 60 6 144 72 7 168 84 8 192 96 9 216 108 Table 3 1 Current consumption as a function of the mains voltage at 1 8 of maximum output power with pink noise in 2 Q The mains voltage may NOT deviate more than 20 to 10 of the nominal value The proportional mains voltage cable loss may not exceed 10 The following formula may be used to calculate the maximum mains cable length in meters for 220 240 V models A NEW WORLD OF SOUND uN i ES 40 USER MANUAL O stage accompany G 30 Maximum Length ML N The two input variables are N number of ES 40s supplied through the cable G cable gauge in square millimeters For 110 120 V models the following formula applies G 7 5 N Maximum Length ML y SNOILOANNOO This means that the cable length is proportional to the cable gauge while it is inversely proportional to the number of ES 40s supplied through the cable On
12. commendations for Optimum Use e 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 If hum does occur it can almost always be solved by using the ground lift switch on the back of the amplifier e Be sure that the ES 40 is built into a space with sufficient circulation of fresh air A tem perature that is constantly too high leads to switching on and off of the thermal protec tion and considerably reducing the lifetime of the amplifier e When built into a flightcase ensure yourself that there are sufficient possibilities for the heated air to leave the flightcase When more ES 40s are built into one flightcase in stall an extra fan in the case Air flow of the ES 40 goes from front to back e Do not make connections to the amplifier or to any preceding equipment with the am plifier switched on e A faulty fuse must ALWAYS be replaced by a new one of the same type and value A different fuse can cause permanent damage to the amplifier All internal fuses are of an automatic type so they do not need to be replaced Always disconnect the ES 40 from the power supply before operating on the fuse holders When a replaced fuse im mediately blows again the amplifier is defect and should be repaired by an authorised Stage Accompany service centre Do not try to replace the fuse again because you may risk fu
13. ed to the amplifier like cross over high low or band pass filtering equalisation and loudspeaker protection Special protection boards are available for all Stage Accompany loudspeaker systems Soft Start The soft start circuit is active when the ES 40 is turned on The mains inrush current which normally is in excess of 100 A is limited to a safe value Also the second power supply is turned on with a two second delay after the first power supply However take care not to switch on too many amplifiers at the same time or you risk that the main fuses of your distribution may trip Temperature DC HF and Short Circuit Protection The amplifier and the loudspeaker outputs are protected against all possible damages 2 2 H NOLLONCOYLNI A NEW WORLD OF SOUND EN ES 40 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 3 1 Mains Power Connection The ES 40 is internally selectable for 110 120 220 240V mains voltage The exact voltages are stated at the rear of the amplifier Switching between mains voltages has to be done by an authorised Stage Accompany service centre Connecting to the wrong voltage is dangerous and may damage the amplifier Always ensure that you use a correctly grounded power supply If more t
14. free of defects in materials or workmanship The warranty period on all Stage Accompany products is five years from the date of the first consumer purchase with the exception of all electrical products three years from the date of the first consumer purchase e cone assemblies in the loudspeaker and diaphragms of the Ribbon Compact Drivers one year from the date of the first consumer purchase e movable parts such as castors locks handles hinges fans etc one year from the date of the first consumer purchase computers and associated peripherals six months from the date of the first consumer purchase To validate warranty the purchaser must always keep the original receipt of purchase to establish the date of purchase Appeal on warranty will be voided in case e of defects caused by influence from the outside accident misuse neglect or influence of water the serial number on the product has been defaced altered or removed E ALNVYYVM of damage due to shipment of damage resulting from neglecting instructions listed in the user manual of damage caused by incorrect abnormal handling or abuse during delivery e the unit has been repaired or shows signs of repair by someone not authorised by New Stage Accompany B V e the original receipt of purchase cannot be presented whenever warranty service is re quired the cause of damage is unknown A NEW WORLD OF SOUND uN ES 40 USER M
15. han one ES 40 is to be used it is advisable to connect each one separately to the a SNOILOANNOO ES 40 Mains Supply ES 40 ES 40 ae ES 40 OK Mains Supply ES 40 ES 40 Figure 3 1 ES 40 connections to the mains supply nearest mains supply in stead of connecting several ES 40s using an adapter block see figure 3 1 A NEW WORLD OF SOUND uN i ES 40 USER MANUAL O stage accompany This will prevent unnecessary power loss in the mains cables If circumstances do not allow this itis advisable to connect the adapter block directly to the power supply using a short cable and then connect the individual ES 40 s to it using longer leads Although this method is not ideal it does limit power loss as much as possible Ultimately it is possible to place the adapter block near the ES 40s but if a great deal of power is required from the units the final current provided is far from optimum loss of current leads to unrecoverable loss of output power and therefore sound pressure Warning Always disconnect the ES 40 from the mains power supply before operating on the fuse holders Replace a blown fuse only with a new one of the same type and value Current Table Below the current consumption of the ES 40 is ta
16. loudspeaker terminal The signal and DDC terminals are linked at the loudspeaker terminal A maximum damping is obtained with these connections If your speaker system is not prepared for a four terminal connection link the DDC and the signal leads at the input of the enclosure see figure 3 3 SPEAKON NL4FC oe a i Figure 3 3 ES 40 2 terminal loudspeaker connection A NEW WORLD OF SOUND uN i ES 40 USER MANUAL O 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 SPEAKON NL4FC Figure 3 4 ES 40 loudspeaker connection without DDC Warning Never short circuit the DDC terminals and never connect the signal output terminal to the DDC terminal or vice versa see figure 3 5 Since you are disabling the amplifier s feedback network signal gain will be almost infinite The smallest input signal will result in full power output with the possibility of square waves damaging your loudspeakers y SNOILOANNOO Therefore check your cables regularly We also advice you to use special Stage Accompany 4 wire loudspeaker cable 2 x 3 0 mm and 2 x 0 75 mm SPEAKON
17. nect the ground pin at either side of the signal cable Hum caused by ground loops can practically always be solved with the use of the ground lift switch at the back of the amplifier Always use high quality XLR connectors and shielded signal cables Using the signal link connectors up to 30 ES 40s can be linked without a problem If more than 30 ES 40s need to be interconnected a separate signal driver should be used The input stages are electronically balanced To make optimum use of the balanced input stages even in unbalanced situations use balanced signal cables and connect pin 3 to pin 1 at the output of the preceding apparatus If this is not possible connect pin 3 to pin 1 at the input of the ES 40 A NEW WORLD OF SOUND uN ES 40 USER MANUAL stage accompany 3 3 Loudspeaker Connections Due to the DDC feature the ES 40 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 or DDC Cera De Pin 2 DDC cold or DDC For optimum performance the amplifier to loudspeaker connections should be made as shown in figure 3 2 The signal and DDC Dynamic Damping Control terminals are linked together at the SPEAKON NL4FC y SNOILOANNOO Figure 3 2 ES 40 4 terminal loudspeaker connection
18. ns Warranty Overview A NEW WORLD OF SOUND EN ES 40 USER MANUAL stage accompany Table Of Contents gt w m 2 1 Quick Introduction to the ES 40 0 cee ee es 1 1 o O z 2 Introduction eee A Se a Whe a ee E 2 1 3 Connection of the ES 40 0 0 cc cee ee 3 1 n 3 1 Mains Power Connection 00000 e eee ee eee ee 3 1 P 3 2 Audio Connections 0 0000 ccc eee 3 4 3 3 Loudspeaker Connections 0 002 eee eee 3 5 3 4 Installing The EFN ec sf jews tae ca as at ads a bd elsa 3 11 4 Operatoria coe ara and cote at 4 1 4 1 Input Attenuators lt caG 0l Se eee A A oh ees 4 1 4 2 Bridge Mode Switch ia daras aran nee tee Mette eS wees 4 1 4 3 Ground EI Switch tad eo hb Se we tee tides a 5 4 2 4 4 INICIO Si ri a atone ee eR lh a aah 4 2 5 Recommendations for Optimum Use 2000 e eee eee eee 5 1 6 Technical Specifications 00 cee eee 6 1 7 Warrants taa os tad di Sra 7 1 8 AO sini eee rae ee eee Oe has tee She Ra ee ee 8 1 A NEW WORLD OF SOUND ES 40 USER MANUAL stage accompany 1 Quick Introduction to the ES 40 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 40 straight away and do not have time to read the complete manual make sure that you at least read the following Ensure that
19. rther damage to the amplifier y SNOILVGNAWWNOOAY e Repairs to the ES 40 should only be carried out by an authorised Stage Accompany service centre Never dismantle the ES 40 yourself you may risk damaging vital com ponents moreover the warranty becomes irrevocably invalidated e Read this manual carefully Try out the various functions described in this manual In this way you will soon become familiar with the many possibilities that the ES 40 of fers It is just as important that your colleagues who will use the ES 40 also read the manual With a good knowledge of the working of the ES 40 it is possible to fully util ise its Superior sound quality in every situation GOOD LUCK A NEW WORLD OF SOUND ar stage accompany ES 40 USER MANUAL 6 Technical Specifications Input Sensitivity Maximum Input Level Input Impedance Common Mode Rejection Ratio CMRR Frequency Range Gain Channel Separation Total Harmonic Distortion THD Intermodulation Distortion IMD Signal to Noise Ratio Slew Rate Damping with DDC Output power lt 1 THD Continuous Power Delivered Peak Power Delivered 1 72 Vrms 7 dBu full continuous power into 4 Q 22 dBu 22 kQ each leg gt 70 dB 20 Hz 20 kHz gt 90 dB O 1 kHz 10 Hz 20 kHz 0 4 dB 100 W into 8 Q 10 Hz 55 kHz 3 dB 100 W into 8 Q 33 dB 44 7x 90 dB 1 kHz 100 W into 8 Q 75 dB 20 kHz 100 W into 8
20. sensitivity of the ES 40 to other amplifiers The sensitivity in the 0 dB position is 6 dBu for 69 V output 1200 W into 4 Q The relative sensitivity to other Stage Accompany amplifiers is ES 10 6 dB ES 20 3 dB SA 800 6 dB SA 1600 3 dB PPA 1200 3dB H NOLLVy43dO Attenuation in the complete counter clockwise position is gt 90 dB 4 2 Bridge Mode Switch The lt BRDG MODE gt switch toggles the amplifier between stereo and bridge mode In stereo mode the channel 1 input feeds the channel 1 amplifier and the channel 2 input feeds the channel 2 amplifier In bridge mode the channel 1 input connector feeds both amplifiers The channel 2 input and outputs are not used and are decoupled from the amplifier Bridge mode is indicated on the frontpanel and only the channel 1 controls and indicators are used To prevent difficult output connections the loudspeakers in bridge mode are simply connected to the channel 1 output connectors 4 3 Ground Lift Switch If hum is audible after switching on the ES 40 the cause may be an incorrect earthing of your sound system The lt GROUND LIFT gt switch can be used to lift the connection between the system earth and the mains earth This action alone is often sufficient to eliminate the undesired noise caused by a bad grounding system or ground loops A NEW WORLD OF SOUND ES 40 USER MANUAL O stage accompany 4 4 Indicators Each channel of
21. the amplifier is equipped with the following indicators e Power these LEDs will light when the amplifier is switched on e Signal present these LEDs will light when an input level of more than 40 dB under the level that would cause maximum power 6 dBu is detected The signal present LEDs work independently of the input attenuators e CLIP this LED will light when the output level of the amplifier has reached its limit The indication is correct for every connected impedance When the clip LEDs flash fre quently action of the ACE system Active Clip Eliminator is to be expected e ACE this LED indicates action of the clip limiter This limiter protects your high fre quency drivers against damage resulting from excessive clipping and it protects the ES 40 against thermal overload When the ACE LEDs turn on it is advisable to reduce the input levels e Protect when these LEDs light one of the following errors has occurred 1 Thermal overload the output devices of this channel have reached a temperature of 85 C and the input of that channel is muted Both channels work independently so thermal overload of one channel does not affect the other channel In case of a contin ued overload it is possible that the power supply runs hot Also in that case the ampli fier s input is muted When internal temperatures have dropped 5 C the amplifier is unmuted y NOILLVy43dO 2 DC on output this indicates that a sufficient amount of
22. this and the next page per mains voltage a table is shown with the maximum mains cable length in meters given the cable gauge in square millimeters and the number of ES 40s supplied through the cable Cable Gauge mm 110 120 V 15 25 4 0 6 0 10 0 16 0 1 11 19 30 45 75 120 2 6 9 15 23 38 60 3 4 6 10 15 25 40 4 3 5 8 11 19 30 No of 5 2 4 6 9 15 24 ES 40s 6 2 3 5 8 13 20 7 2 3 4 6 11 17 8 1 2 4 5 9 15 9 1 2 3 5 8 13 10 1 2 3 5 8 12 Table 3 2 Maximum cable length as a function of the cable gauge and the number of ES 40s supplied through the cable A NEW WORLD OF SOUND an ol MAUI NIN stage accompany Cable Gauge mm 220 240 V 1 5 2 5 4 0 6 0 10 0 16 0 45 75 120 180 300 480 2 23 38 60 90 150 240 3 15 25 40 60 100 160 4 11 19 30 45 75 120 No of 5 9 15 24 36 60 96 ESTs 6 8 13 20 30 50 80 9 7 6 11 17 26 43 69 m 8 6 9 15 23 38 60 O 9 5 8 13 20 33 53 9 10 5 8 12 18 30 48 lt Table 3 3 Maximum cable length as a function of the cable gauge and the number of pS ES 40s supplied through the cable 3 2 Audio Connections The XLR connectors audio in and audio link of the ES 40 are wired as follows Pin 1 ground Pin 2 normal phase signal or hot NN 030 SY Pin 3 inverted phase signal or cold Gana A It is not advisable to discon
23. tput terminals solves these problems see figure 3 8 The DDC system corrects the performance loss due to connectors loudspeaker cables and so on However it cannot prevent loss of power So only use cables of minimal 2 x 1 5 mm or more for the loudspeaker leads and 2 x 0 75 mm for the DDC leads For bridge mode operation simply connect the speaker to the channel 1 output connector SPEAKON NL4FC Figure 3 9 ES 40 bridge mode to loudspeaker connections A NEW WORLD OF SOUND uN ES 40 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 100 29 4 G R L Proportional Power Loss 1 where the variables represent L cable length in meters G cable gauge in square millimeters R DC resistance of the loudspeaker s in ohms This formula is based on the DC resistance in stead of the complex impedance of the loudspeaker s However the approximation can be used to get a good impression of the loudspeaker cable power loss Per loudspeaker impedance a table is shown in tables 3 9 to 3 12 with the proportional power loss given the loudspeaker cable gauge in square millimeters and the cable length in meters SNOILOANNOO Cable Gauge mm 16 Q 1 5 2 5 3 0 4 0 6 0 10 0 16 0 20 2 8 1 7
Download Pdf Manuals
Related Search