PROEL AXIOM - VERSION 2.0 Manual
  1. Manuals
  2. Brands
  3. PROEL Manuals
  4. Speaker System
  5. AXIOM - VERSION 2.0
  6. Manual

PROEL AXIOM - VERSION 2.0 Manual

Axiom series
Hide thumbs
Table of Contents

Advertisement

Quick Links

Advertisement

Table of Contents
loading

Related Manuals for PROEL AXIOM - VERSION 2.0

Summary of Contents for PROEL AXIOM - VERSION 2.0

  • Page 3 AXIOM SERIES USER MANUAL Version 2.0 February 27, 2008...
  • Page 4 All contents of this manual are for the purpose of information and reference only; specifications and aspects of each product are subject to change at any time. Proel SpA is not responsible for any possible error in the contents of this manual.

  • Page 5: Table Of Contents

    Contents 1 Introduction 1.1 The sound out front! ........1.1.1 Vertical Array Systems .
  • Page 6 CONTENTS CONTENTS 5.2.2 Stacking arrays of AX3210P and AX1118SP systems combined on flying bar KP- TAX3210 ......... 5.3 Suspending AX2265P and AX1115SP Systems .

  • Page 7: Introduction

    Therefore the definition Vertical Array is more correct Like concert systems Proel EDGE212P that, designed to work combined as traditional arrays, typically lined up side by side horizontally, are sometimes staked vertically.
  • Page 8 1.1. THE SOUND OUT FRONT! 1. Introduction Figure 1.1: Different designing approaches: (a) classic, (b) two-dimension array-ability, (c) vertical axle only array- ability. dimensions. Furthermore, while directivity can be shaped with a certain degree of freedom on a vertical line, on a horizontal line the directivity features of each element can be limiting In the attempt to divulge to most people in the audio industry the operational principle of a vertical array system, complex concepts were very often banalized so much that false notions started circulating, and some have gone as far as stating that vertical array systems can generate cylindrical wave fronts,...

  • Page 9: Axiom Vertical Array Systems

    1. Introduction 1.1. THE SOUND OUT FRONT! Figure 1.2: Vertical Array coverage, 16 modules @ 2kHz: (a) perfectly straight array, (b) progressive curvilinear array. extend the frequency range at which the interference between the sources can be controlled, even when their frequencies reach the highest levels.
  • Page 10 1.1. THE SOUND OUT FRONT! 1. Introduction Figure 1.3: Vertical coverage stability comparison: (a) plan radiation sound system on straight array, (b) plan ra- diation sound system on curvilinear array, (c) curvilinear radiation sound system on straight array, (d) curvilinear radiation sound system on curvilinear array. Figure 1.4: AX3210P array with overhead AX1118SP subs, a typical employment of vocal sound reinforcement in an indoor arena.
  • Page 11 Many variables are therefore involved and that is why, in order to provide the best solution for the widest range of applications, the AXIOM Series by Proel features several different models.

  • Page 12: Technological Solutions

    1.2. TECHNOLOGICAL SOLUTIONS 1. Introduction as, at equivalent power capability, their mounting complexity is remarkably reduced. 1.2 Technological Solutions The choice of AXIOM Systems project specifications was made considering the actual needs of our customers, the final users. Analysing such needs and combining the results with our professional expe- rience in this field we laid the basis for our project of building functional versatile vertical array systems.

  • Page 13: Technological Solutions

    1. Introduction 1.2. TECHNOLOGICAL SOLUTIONS Figure 1.7: AX2265P driver on wave guide 1.2.2 Technological Solutions When designing the AXIOM Series we went for top functionality, ignoring not even the slightest detail. The result is a mechanical system that is extremely easy to use and safe with an audio performance that is guaranteed in any situation.
  • Page 14 1.2. TECHNOLOGICAL SOLUTIONS 1. Introduction Figure 1.8: Amp-Ready back mechanics LAC Simulation Software In order to support the AXIOM Series Systems during the design phase and for daily use we developed a simulation software based on high resolution measurements of every element in the series and on advanced mathematical models.

  • Page 15: Specifications

    2. Specifications All technical data reported here are the results of a series of tests run at Proel Labs in an anechoic chamber and in free field using state-of-the-art measurement methods. The measurements that re- sulted from such tests are the basis for the dedicated LAC simulation software and for the EASE com- mercial simulation software models.

  • Page 16: Ax3210P

    Maximum Peak Output 131 dB @ 1 m neodymium magnet and a 2” throat. It mounts Signal Processing Proel DSO26 a 4” annular membrane for the reproduction of Lake Contour Pro 26 mid-range frequencies and a 2” membrane for Transducers Mid Frequency Device 2 x 10”...
  • Page 17 12 . Dimensions should be: 32.1 cm high, 79.6 cm wide (front) MF/HF+ and 66.5 cm deep. The system should be a MF/HF- PROEL AX3210P. Dimensions Graphical data Attenuation map (horizontal): Polar Coverage Map − Attenuation [dB] −5 −10...
  • Page 18 AX3210P 2. Specifications Polar diagrams (horizontal): 0° 0° 0° 30° −30° 30° −30° 30° −30° −12 −12 −12 60° −60° 60° −60° 60° −60° −36 −36 −36 200Hz 500Hz 1.25kHz 250Hz 630Hz 1.6kHz 90° −90° 90° −90° 90° −90° 315Hz 800Hz 2kHz 400Hz...

  • Page 19: Ax1118Sp

    finish mance. Proel’s Touring R&D Department have Flying System built in suspension system designed a port with a streamlined profile which Dimensions (WxHxD) 79.6 x 48 x 66.5 cm...
  • Page 20 AX1118SP 2. Specifications Connectors 2 x Neutrik Speakon NL4MP linked in parallel. Dimensions...
  • Page 21 2. Specifications AX1118SP Graphical data Frequency response −10 −20 −30 −40 Frequency [Hz] Impedance: Frequency [Hz] Measured with 2.83 V @ 1m. with ground plane procedure in free field.

  • Page 22: Edge121Sp

    80 Hz to 160 Hz and should be 76.5 cm high, 58.4 cm wide Input Power Rating 800 W AES, 1600 W program and 81 cm deep. The system should be Proel Sensitivity 98 dB SPL ( 2.83 V @ 1 m ) EDGE121SP.
  • Page 23 2. Specifications EDGE121SP Dimensions Graphical data Frequency response Impedance: 12.5 31.5 Frequency [Hz] Measured with 2.83 V @ 1m. with ground plane procedure in free field.

  • Page 24: Ax2265P

    Maximum Peak Output 129 dB @ 1 m it to work well even at 1.3 kHz despite its small Signal Processing Proel DSO26 size. The average nominal angular dispersion is Lake Contour Pro 26 ◦ (-6 dB) on the horizontal level, whereas the...
  • Page 25 12 . Dimensions 2 x Neutrik Speakon NL4MP, linked in parallel. should be: 32.1 cm high, 79.6 cm wide (front) and 66.5 cm deep. The system should be a PROEL AX3210P. Dimensions Graphical data Attenuation map (horizontal):...
  • Page 26 AX2265P 2. Specifications Polar diagrams (horizontal): 0° 0° 0° 30° −30° 30° −30° 30° −30° −12 −12 −12 60° −60° 60° −60° 60° −60° −36 −36 −36 200 Hz 500 Hz 1.25kHz 250 Hz 630 Hz 1.6 kHz 90° −90° 90°...

  • Page 27: Ax1115Sp

    Maximum Peak Output 130 dB @ 1 m ble Demodulating Rings, and a Double Silicon Signal Processing Proel DSO26 Spider to ensure continuous excursion control Lake Contour Pro 26 and very low distortion levels. In order to im- Crossover Frequency from 80 Hz to 160 Hz prove its performance as for efficiency, acoustic...
  • Page 28 AX1115SP 2. Specifications Connectors 2 x Neutrik Speakon NL4MP linked in parallel. Dimensions...

  • Page 29: Dso26

    0.5dB 20Hz-20kHz; dynam- put, with fine adjustment by 2.6µsec minimum ics: 110dB20Hz-20kHz, un-weighted; paramet- steps. DSO26 includes presets for Proel Sys- ric filters: a total of 30 digital sections, with tems and will let you memorize personal settings.
  • Page 30 DSO26 2. Specifications Data Sheet Inputs 2 electronically balanced > 10k Ω Impedance > 65dB 50Hz - 10kHz CMRR Outputs 6 electronically balanced < 60 Ω Source Imp 600 Ω Min. Load +20dBm into 600 Ω Max. Level ±0.5dB 20Hz-20kHz Frequency Resp.

  • Page 31: Lac

    The software is designed to be a quick and easy instrument for the best configuration of the The Proel LAC (Line Array Configurator) soft- system whether it is used by the most expert ware allows accurate simulation of the mechan- sound designer –...

  • Page 33: Accessories

    3. Accessories The AXIOM Series features a complete line of accessories for the system’s installation and care. 3.1 Accessories for flown or stacked installation The fundamental element for flown or stacked installation of AX3210P and AX1118SP systems is fly bar KPTAX3210S, which optional feet, 95AXMPDN, allow installation in a stacked configuration.

  • Page 34: Accessories For Transportation And Care Of The Systems

    Please check chapter 7 for various system configu- rations examples. 3.4 Suspension towers and engines The Proel Trussing Catalogue features towers and motors to lift all AXIOM Series Systems quickly and safely. Figure 3.3: PLFTMQD30 9.5m tower with 600 kg capacity.
  • Page 35 3. Accessories 3.4. SUSPENSION TOWERS AND ENGINES Figure 3.4: Transportation accessories: 3.4a AX3210P on AXSKATE caster-board and 93COVAX310 cover, 3.4b AX1118SP on AXSKATES18 caster-board. Figure 3.5: Transportation accessories: 3.5a CP038D04 case for 4 x AX2265P, 3.5b AX2265P on case (open), 3.5c CP038A04 case for 2 x AX3210P.

  • Page 37: Sound Design With Axiom

    4. Sound design with AXIOM Vertical array systems offer a series of advantages when compared to traditional systems, and we dis- cussed them extensively in the introduction to this manual. Nonetheless, because of the high quantity of sources employed, vertical array systems present a natural complexity which needs to be dealt with correctly.

  • Page 38: Design Instruments

    4.2. DESIGN INSTRUMENTS 4. Sound design with AXIOM vertical array systems we use the centralized approach to sound reinforcement, and the modality which allows the creation of a single, large source has already been treated in detail when we discussed array-ability.
  • Page 39 4. Sound design with AXIOM 4.2. DESIGN INSTRUMENTS Figure 4.1: LAC Vertical View window increasing angle sequence. Whatever the changes made, the sequence should follow an increasing pattern. This allows the greatest uniformity of vertical dispersion, and the distance SPL graph will fully confirm it, at any frequency.
  • Page 40 4.2. DESIGN INSTRUMENTS 4. Sound design with AXIOM Figure 4.2: LAC Mechanical View window is like calculating respectively for 3, 5 or 7 points within the chosen band segment. Once all the simulation parameters have been set, the calculation motor can be started by pressing the Start button in the Simulate module.

  • Page 41: Ease

    Several software systems allowing the simulation of acoustic sources and their interaction with a three- dimensional location are available on the market. The package usually chosen by professionals is the EASE (Enhanced Acoustical Simulator for Engineers) by ADA Acoustic Design Ahnert; all Proel speakers feature models for EASE 4.1 , and they can be downloaded free of charge from our website: sound.proelgroup.com.

  • Page 42: The Curvature Of The Array

    For this reason, in order to obtain the best sound quality possible and to avoid involuntary mistakes, processor Proel DSO26 grants access only to parameters related to gain trim and to the delay of some pass band outputs, which, together with equalization, are the only ones needed for setting up the system.

  • Page 43: Ax3210P System Processing

    4. Sound design with AXIOM 4.5. SYSTEM PROCESSING   Figure 4.5: EDGE121SP+AX3210P preset structure 4.5.1 AX3210P System Processing AX3210P are three-way systems with a passive filter that feeds the two coaxial membranes of the high frequency driver. AX3210P systems are processed as two-way: MID-L and HIGH. Available pre- sets allow the combination of AX3210P satellite with EDGE121SP subwoofer from the EDGE Series or AX1118SP subwoofer (suitable for suspension) from the AXIOM Series.

  • Page 44: Arrangement Of Subs

    4.6. THE LOW RANGE 4. Sound design with AXIOM                Figure 4.6: Typical frequency response for vertical arrays Figure 4.7: Simplified pattern of the combination mechanism for the elements of the array: (a) low frequencies (b) high frequencies.

  • Page 45: Temporal Alignment

    4. Sound design with AXIOM 4.7. NOTES ON THE POWER OF THE AMPLIFICATION Figure 4.8: Simulation of emission produced by 12 EDGE121SP subs set in 2 groups of 6 and positioned L+R. Figure 4.9: Simulation of emission produced by 12 EDGE121SP subs set in 4 groups of 3 and distributed across the stage front.
  • Page 46 4.7. NOTES ON THE POWER OF THE AMPLIFICATION 4. Sound design with AXIOM value and peak value ratio) of 6 dB. For common applications which require both a high power and a high reliability level, it is advisable to use power amplifiers with an output rating equivalent to the AES power rating of the enclosures.

  • Page 47: Guide To System Setup

    5. Guide to System Setup This chapter of the manual is devoted to the mounting procedures necessary to fly or stack the AXIOM Series Curvilinear Vertical Array Systems. The AXIOM Systems are built to allow the suspension of arrays with variable shape and dimensions thanks to a suspension mechanism designed to be functional, flexible and safe.
  • Page 48 5.1. SUSPENDING AX3210P AND AX1118SP SYSTEMS 5. Guide to System Setup          Figure 5.1: AX3210P - integral suspension system The LAC software simulates the acoustic operation of the array, and defines the position of its barycentre and consequently the coupling points for the configuration chosen.
  • Page 49 5. Guide to System Setup 5.1. SUSPENDING AX3210P AND AX1118SP SYSTEMS Mounting operation sequence According to the correct mounting procedure, the creation of the array has to be started on the ground, with AX3210P systems on their caster boards, and then lifted. All front coupling operations and most of the wiring can be done on the ground.
  • Page 50 5.1. SUSPENDING AX3210P AND AX1118SP SYSTEMS 5. Guide to System Setup Figure 5.3: Array prepared on a uneven ground In the A configuration, the attachment of the flying bar is rather easy: move KPTAX3210 flying bar vertically close to the top enclosure on the array, then use the cams on the flying bar to couple it to the front of the enclosure.
  • Page 51 5. Guide to System Setup 5.1. SUSPENDING AX3210P AND AX1118SP SYSTEMS     Figure 5.4: Correct coupling point between the hole in the posterior bars and the flying bar. 6. The flying bar is coupled with the enclosure and fixed with pins •...
  • Page 52 5.1. SUSPENDING AX3210P AND AX1118SP SYSTEMS 5. Guide to System Setup Figure 5.5: Array coupled in the front and ready (on the left) and power wiring (on the right). During the lifting phase check continuously to make sure that the space between each loudspeaker and the next is free and that the lifting is smooth.
  • Page 53 5. Guide to System Setup 5.1. SUSPENDING AX3210P AND AX1118SP SYSTEMS Figure 5.6: Pins are inserted through the U-shaped profile and the slotted bar 8. The angles are set by inserting the pins ◦ ◦ ◦ Figure 5.7 shows some mounting examples with the angle set at 0 , 10 and 10.5 .
  • Page 54 5.1. SUSPENDING AX3210P AND AX1118SP SYSTEMS 5. Guide to System Setup                                   Figure 5.7: The relative angle between AX3210 enclosures is set...
  • Page 55 5. Guide to System Setup 5.1. SUSPENDING AX3210P AND AX1118SP SYSTEMS 9. The array is lifted further 10. The array is completely set At the end of these operations the last element of the array still lies on the ground and the array is ready to be lifted.
  • Page 56 5.1. SUSPENDING AX3210P AND AX1118SP SYSTEMS 5. Guide to System Setup Figure 5.8: Caster boards are disengaged and stacked. • The array is lifted off the ground In this phase the array has to be eased in its natural movement by holding the handles on the last enclosure of the array to avoid a sharp forward shifting toward the natural vertical centre provided by the lifting point.
  • Page 57 finished elements then validated by empirical load tests. Flying bar KPTAX3210 can hold up to 24 AX3210P systems. Figure 5.9 shows some configurations that have been verified; please contact Proel’s Technical Office if you need to verify any other configuration.
  • Page 58 5.1. SUSPENDING AX3210P AND AX1118SP SYSTEMS 5. Guide to System Setup - . ! " - . ! "               !  "      !  "  ...

  • Page 59: Flying An Array Of Ax3210P And Ax1118Sp Using Flying Bar Kptax3210

    The following table indicates the maximum quantity of enclosures that can be safely suspended: AX3210P AX1118SP Figure 5.10 shows some configurations that have been verified; please contact Proel’s Technical Office if you need to verify any other configuration. And obviously of arrays composed only of AX1118SP systems.

  • Page 60: Flying An Array Of Ax3210P And Ax1118Sp Systems Using Flying Bar Kptax3210S

    Assembly and disassembly operations are the same described for flying bar KPTAX3210. Load limits Load limits are analogous to those referring to flying bar KPTAX3210. Figure 5.12 shows some con- figurations that have been verified; if you need to verify any other configuration please contact Proel’s...

  • Page 61: Stacking Ax3210P And Ax1118Sp Systems

    5. Guide to System Setup 5.2. STACKING AX3210P AND AX1118SP SYSTEMS  Figure 5.11: KPTAX3210S – Coupling configuration Technical Office. 5.2 Stacking AX3210P and AX1118SP systems Stacked AXIOM Systems arrays can be created either using an AX1118P SUB directly on the ground as a base or employing flying bar KPTAX3210 adding its feet (95AXMPDN).
  • Page 62 5.2. STACKING AX3210P AND AX1118SP SYSTEMS 5. Guide to System Setup ' (   ' (                          ...
  • Page 63 5. Guide to System Setup 5.2. STACKING AX3210P AND AX1118SP SYSTEMS       Figure 5.13: KPTAX3210 – positioned on the ground Sequence of mounting operations • Positioning flying bar KPTAX3210 on the ground Mount feet 95AXMPDN on top of the flying bar (on the same side where the suspension shackle is), then put the bar down on the ground in the position where you will stack the array and adjust the feet so to lie the bar perfectly horizontal.
  • Page 64 5.2. STACKING AX3210P AND AX1118SP SYSTEMS 5. Guide to System Setup Figure 5.14: KPTAX3210 – adjusting the angle of the first enclosure 2. Coupling the bar with the first enclosure of the stacked array • Positioning the first portion of the array on the ground Once the first enclosure has been coupled to the flying bar, with a rotation you can lie this portion of the array back on the ground in the position you had marked.
  • Page 65 5. Guide to System Setup 5.2. STACKING AX3210P AND AX1118SP SYSTEMS Figure 5.15: position of lateral pins used as anti-shifting pins    ! Figure 5.16: Adjusting the relative angle between AX3210P and AX1118SP systems when stacked 3. Positioning the next enclosure...

  • Page 66: Stacking Arrays Of Ax3210P And Ax1118Sp Systems Combined On Flying Bar Kptax3210

    5.2. STACKING AX3210P AND AX1118SP SYSTEMS 5. Guide to System Setup 4. Front coupling 5. Setting the angle with the back slotted bar Verify that the angle has been set correctly on both slotted bars of the enclosure. You can now proceed iteratively to complete the assembly of the whole stacked array. •...
  • Page 67 5. Guide to System Setup 5.2. STACKING AX3210P AND AX1118SP SYSTEMS Sequence of mounting operations • Positioning flying bar KPTAX3210 on the ground Mount feet 95AXMPDN on top of the flying bar (on the same side where the suspension shackle is), then put the bar down on the ground in the position where you will stack the array and adjust the feet so to lie the bar perfectly horizontal.

  • Page 68: Suspending Ax2265P And Ax1115Sp Systems

    5.3. SUSPENDING AX2265P AND AX1115SP SYSTEMS 5. Guide to System Setup Load limits Flying bar KPTAX3210 can stack up to eight systems. The following chart shows all the possible combi- nations: AX3210P AX1118SP 5.3 Suspending AX2265P and AX1115SP Systems AXIOM models AX2265P and AX1115SP feature a suspension system integrated into their frames fea- tures two coupling cams in the front of the speaker and two slotted bars in the back.
  • Page 69 5. Guide to System Setup 5.3. SUSPENDING AX2265P AND AX1115SP SYSTEMS Choosing the array configuration Because of the great variety of possible configurations, AXIOM systems are provided with a software (LAC) which allows the simulation of the array configuration, therefore calculating the centre of mass and the anchoring points.
  • Page 70 5.3. SUSPENDING AX2265P AND AX1115SP SYSTEMS 5. Guide to System Setup • Enclosure front coupling on the ground The operation of coupling the front part of the enclosures is quite simple: get the speakers on their case boards close together and release the pins holding the cams, then slide the cams into their housing on the next speaker and fasten them into their new position with the pins.
  • Page 71 5. Guide to System Setup 5.3. SUSPENDING AX2265P AND AX1115SP SYSTEMS Figure 5.19: AX2265 array ready for wiring Figure 5.20: AX2265P array coupled in the front and power wired ready to lift...
  • Page 72 5.3. SUSPENDING AX2265P AND AX1115SP SYSTEMS 5. Guide to System Setup 4. The flying bar is coupled with the enclosure and fixed with pins 5. Set the angle between the flying bar and the first enclosure • Coupling the flying bar with the lifting device The flying bar and the lifting device are coupled through the insertion of 16 mm shackles in the numbered holes on the bar itself.
  • Page 73 5. Guide to System Setup 5.3. SUSPENDING AX2265P AND AX1115SP SYSTEMS During the lifting phase check continuously to make sure that the space between each loudspeaker and the next is free and that the lifting is smooth. If jams were to occur or if cables were to enter the space between the enclosures, do not try to free them during compression or lifting.
  • Page 74 5.3. SUSPENDING AX2265P AND AX1115SP SYSTEMS 5. Guide to System Setup Figure 5.21: AX2265P array is lifted off the ground 8. The array is lifted further 9. The array is completely set At the end of these operations the last element of the array still lies on the ground and the array is ready to be lifted.

  • Page 75: Flying An Array Of Ax2265P And Ax1115Sp Using Flying Bar Kptax2265

    Element Modeling then validated by empirical load tests. Flying bar KPTAX2265 can hold up to 24 AX2265P systems. Figure 5.22 shows some configurations that have been verified; please contact Proel’s Technical Office if you need to verify any other configuration..
  • Page 76 5.3. SUSPENDING AX2265P AND AX1115SP SYSTEMS 5. Guide to System Setup - . " # - . " #               !"  #    !"  #    ...

  • Page 77: Stacking Ax2265P And Ax1115Sp Systems

    The following table indicates the maximum quantity of enclosures that can be safely suspended: AX2265P AX1115SP Figure 5.23 shows some configurations that have been verified; please contact Proel’s Technical Office if you need to verify any other configuration. 5.4 Stacking AX2265P and AX1115SP systems Stacked AXIOM Systems arrays can be created either using an KPTAX2265 with its rubber feet.
  • Page 78 5.4. STACKING AX2265P AND AX1115SP SYSTEMS 5. Guide to System Setup  Figure 5.23: Verified configurations of arrays composed of AX2265P and AX1115SP systems with flying bar KP- TAX2265.

  • Page 79: Stacking Ax2265P Systems On Flying Bar Kptax2265

    5. Guide to System Setup 5.4. STACKING AX2265P AND AX1115SP SYSTEMS 5.4.1 Stacking AX2265P systems on flying bar KPTAX2265 Choosing the array configuration The array configuration is limited by the fact that, when stacked, the systems can only maintain partial angles because only the hole on the slotted bar, and not the slot, can be used to couple them Flying bar KPTAX2265 used as stacking base Flying bar KPTAX2265 with its rubber feet can be used to stand AXIOM System Stacked Arrays safely.
  • Page 80 5.4. STACKING AX2265P AND AX1115SP SYSTEMS 5. Guide to System Setup Sequence of mounting operations • Positioning flying bar KPTAX2265 on the ground put the bar down on the ground in the position where you will stack the array and adjust the feet so to lie the bar perfectly horizontal.

  • Page 81: Notes On Safety

    Flying Bar KPTAX3210 (and of Flying Bar KPTAX3210S) should be five years. Yet, qualified operators indicated by Proel itself should carry out an annual inspection to verify the general state of repair of the structure and eventually arrange for maintenance, and especially should ascertain the integrity of the welded joints.

  • Page 82: What You Need To Do

    Suspension systems KPTAX3210 and KPTAX3210S and all related accessories are suited only for Proel’s AX3210P and AX1118SP systems and cannot be used for different models or for products of a different brand.

  • Page 83: Operating Guide

    Figure 6.1: Proel cable tester PLTESTCB See the LAC software manual to find out which versions of the operating system it supports.

  • Page 84: Test Signal Generator

    , but also the physical examination of its state of wear in order to perform any preventive maintenance that proves necessary. For further information on tech- niques and methods of measurement and analysis, it is possible to contact PROEL technical support at sound.proelgroup.com.

  • Page 85: System Design

    HIGH or MID is likely to damage it. All racks provided by Proel with AXIOM Systems are verified prior to shipping. All Proel AXIOM Systems are accurately verified and measured at the end of the production line according to state-of-the-art quality control techniques.

  • Page 86: Adjustment

    SUB output. SUB delay The presets supplied by Proel with the AXIOM system foresee the mechanical alignment of the satellites with the subwoofer systems. Therefore the system is correctly aligned when one satellite is physically above one sub enclosure; the situation shown in figure 6.2.
  • Page 87 MID-L/HIGH pass bands from the processor. The delay to apply to one or the other outputs is exactly the difference in meters between the two audio paths. The Proel DSO26 processor allows the user to input the necessary delay directly in meters, but to calculate the delay in milliseconds it is necessary only to apply the simple mathematical formula: −...
  • Page 88 6.4. INSTALLATION OF THE SYSTEM 6. Operating guide Figure 6.6: Delay adjustment, SUB signal lags in phase. proceed with the physical measurement of the distances involved and utilize the values obtained from this to set the delay in the processor. This method will allow you to begin with a delay value which is very close to that which is exact, without introducing possible errors caused by uncertainty, misuse or malfunction of the external measurement instrumentation.
  • Page 89 6. Operating guide 6.4. INSTALLATION OF THE SYSTEM Figure 6.7: Delay adjustment, SUB signal ahead in phase. Figure 6.8: Delay adjustment, SUB signal perfectly in phase.

  • Page 90: During The Show

    6.5. DURING THE SHOW 6. Operating guide the subs or, given that the frequencies are high, with the automatic delay finder function of SmaartLive (or with an impulse peak alignment function of other measurement systems). Equalization At this point the system should be completely and correctly set up with regard to time alignment, and it is possible to proceed with any necessary equalization.

  • Page 91: Equalization Adjustment

    6. Operating guide 6.5. DURING THE SHOW of the sound reinforcement system: the system is not adapted to the sound pressure levels required by the situation. 6.5.2 Equalization adjustment The changes in atmospheric and environmental conditions between the set up of the system and the actual performance can be quite noticeable.

  • Page 93: Typical Applications

    7. Typical applications The AXIOM systems have been designed to be extremely modular. The following chapter, shows an example of some of the typical applications for live concert systems and fixed installations. These are just few of the many possible configurations of the AXIOM system. 7.1 Medium concert system 1 ...

  • Page 94: Medium Concert System 2

    7.2. MEDIUM CONCERT SYSTEM 2 7. Typical applications 7.2 Medium concert system 2 ...
  • Page 95 7. Typical applications 7.3. COMPACT CONCERT SYSTEM 7.3 Compact concert system # )&*+ %"* '  !" $"" # )&* $ #' &* $"" # )&* $ #' &* $"" # )&* $ #' &* ' %& %$' #$%&' !"#!" #$%&' # )&* #$%&' !$' "...

  • Page 97: A Vertical Array Theory

    Appendix A Vertical Array theory Vertical arrays, commonly referred to as line arrays, have earned enormous popularity among profes- sional users. The fundamental principals used as a basis of the design and operation of these electro acoustic systems unfortunately have not enjoyed the same proliferation as the systems themselves. In this appendix, we will briefly analyze the phenomenon of interference which serves as a base for the control of directivity of bass frequencies which is exploited in vertical arrays, and the conditions which need to be satisfied by a high frequency source used in the same.

  • Page 98: Wave Fronts And Source Curvature

    A.2. WAVE FRONTS AND SOURCE CURVATURE A. Vertical Array theory Figure A.1: Simulation of the radiation along the vertical axis of an array composed of 16 omnidirectional sources with a step of 32cm. while off axis these contributions tend to cancel out due to the differences in radiation path and, conse- quently, in phase.
  • Page 99 A. Vertical Array theory A.2. WAVE FRONTS AND SOURCE CURVATURE than a continuous flat source. If we compare the polar diagram of a continuous flat source to an array of curved sources, we see that the dispersion is very similar, with small differences only in the lateral lobes. Imposing the condition that the lateral lobes remain at a level of at least 10dB lower than the central lobe, we find that the curvature of the source is one-fourth the wavelength of the lowest frequency it must reproduce.

  • Page 101: B Notes On System Measurement

    Appendix B Notes on system measurement The measurement of the response of audio systems can be carried out either with a real-time spectrum analyzer or with an instrument capable of revealing the complex response, including modulus and phase. If we model the system to be measured as a Linear Time-Invariant system , it is possible to analyze its operation by means of the character of its frequency response.

  • Page 102: The Perfect System

    B.2. THE PERFECT SYSTEM B. Notes on system measurement B.2 The Perfect System For a system to be perfect or, rather, for it to be free of linear distortion, theoretically it must have a flat mode response (in the band of interest) and a linear phase response (if visualized on a linear frequency scale).

  • Page 103: Wrapped Phase

    B. Notes on system measurement B.4. ENVIRONMENTAL REFLECTIONS spectrum of the output as the response of the system. With this method, we are given no information about phase. In order to acquire data about phase response, it is necessary to use an instrument of measure more complex that utilizes test signals known to the instrument (the pink noise to which we referred previously is known only for its frequency content, but not for its temporal content).

  • Page 104: Selection Of A Measurement Microphone

    B.5. SELECTION OF A MEASUREMENT MICROPHONE B. Notes on system measurement Figure B.4: Measurement microphones position: (a) on microphone boom stand, (b) in ground-plane. to the use intended for the results of the measurement. For time alignment of the Subs, it is necessary to position the microphone in the ground plane.

  • Page 105: C Useful Formulae And Tables

    B. Notes on system measurement B.6. MONO OR STEREO MEASUREMENT? case, however, it is necessary to use the measurement system in a very critical manner. Real time analysis is based on a mono source, a pink noise generator, and therefore the Left and Right channels will reproduce the same signal.

  • Page 107: Calculation Of The Speed Of Sound

    Appendix C Useful Formulae and Tables In this appendix we review some formulae and reference tables useful in the everyday use of the AXIOM vertical array system. C.1 Calculation of the speed of sound The velocity of the propagation of sound c in air depends fundamentally on the temperature according to the formula: c = 331.4 + 0.6 ·...

  • Page 108: Conversion Delay-Distance And Distance-Delay

    C.3. CONVERSION DELAY-DISTANCE AND DISTANCE-DELAY C. Useful Formulae and Tables C.3 Conversion Delay-Distance and Distance-Delay When the speed of sound is known, the relationship between time delay t in milliseconds and distance d in meters can be expressed be the following: t = 1000 ·...
  • Page 109 C. Useful Formulae and Tables C.5. AIR ATTENUATION Attenuation of sound in air (50m) −5 −10 −15 −20 −25 −30 frequency [Hz] Figure C.1: Attenuation in function of relative humidity at a distance of 50m. This table presents some attenuation values, expressed in dB/km, for vaious levels of relative humid- ◦...

This manual is also suitable for:

Axiom - v2.0Axiom ax3210pAxiom ax1118spAxiom edge121spAxiom ax2265pAxiom ax1115sp ... Show all

Table of Contents