Engineer 418 & 818 User Guide The Martin Experience All material © 2011. Martin Audio Ltd. Subject to change without notice.
Martin Audio Engineer 418 & 818 User Manual Engineer 418 & 818 User Manual Page 2
Contents Contents ................................................................................................. 3 Declaration of Conformity: Engineer 418 ..................................................... 6 Declaration of Conformity: Engineer 818 ..................................................... 7 Important Safety Instructions .................................................................... 8 Disclaimer..........................................................................................
5: Engineer Remote ............................................................................... Panel layout ..................................................................................... Installation ...................................................................................... Power.............................................................................................. Wiring .............................................................................................
Exit equalizer ............................................................................ Engineer simple control ..................................................................... Basscreator algorithm ....................................................................... Concept .................................................................................... Controlling the Basscreator ......................................................... Presets and projects.................................
Declaration of Conformity: Engineer 418 Manufacturer's name: XLNT Advanced Technologies Adress: Zonnebaan 42 3542 EG Utrecht The Netherlands Declares that the product: Name: Engineer 418 Conforms to the following EEC Directives Low Voltage Directive 2006/95/EC EN 60065 : 2002 IEC 60065 :2001 Modified EMC Directive 2004/108/EC EN 55103-1 (1996) EN 55103-2 (1996) EN 61000-3-2 (2000) +A2 (2005) EN 61000-3-3 (1995) + A1 (2001) + A2 (2005) Utrecht 25 January, 2008 XLNT Advanced Technologies Engineer 418 & 818
Declaration of Conformity: Engineer 818 Manufacturer's name: XLNT Advanced Technologies Adress: Zonnebaan 42 3542 EG Utrecht The Netherlands Declares that the product: Name: Engineer 818 Conforms to the following EEC Directives Low Voltage Directive 2006/95/EC EN 60065 : 2002 IEC 60065 :2001 Modified EMC Directive 2004/108/EC EN 55103-1 (1996) EN 55103-2 (1996) EN 61000-3-2 (2000) +A2 (2005) EN 61000-3-3 (1995) + A1 (2001) + A2 (2005) Utrecht 25 January, 2008 XLNT Advanced Technologies Engineer 418 & 818
Important Safety Instructions It is extremely important to read ALL safety information and instructions provided in this manual and any accompanying documentation before installing and operating the products described herein. Heed all cautions and warnings during installation and use of this product. Keep this instruction manual for future reference This unit does not contain any user serviceable parts. Do not open this unit. Doing so will void warranty and might present a risk.
Disclaimer All rights reserved. Although the information in this manual has been compiled with care, individual items may vary in size, ratings and functionality from what is included in this manual. Martin Audio Ltd. disclaims any liability for damage, losses or other consequences suffered or incurred in connection with the use of the measurements, data or information contained in this manual. Martin Audio Ltd. may change this product without prior notice. Copyright: TeamProjects BV 2007.
1: Description Application Thank you for choosing the Martin Audio Engineer for your application. The Martin Audio Engineer is a powerful, advanced audio DSP product, built into a 19” rack mount enclosure, designed for permanently installed entertainment audio systems. On top of the ‘normal’ crossover and routing functionality The Martin Audio Engineer features two unique highly advanced specialist audio algorithms.
Very high, musical sound quality throughout. Unique Engineer DSP algorithm, working 24-7 to keep a consistent sound in your venue. Unique Basscreator algorithm, gives small speakers the perceived low frequency response of a large speaker. Flexible build-in scheduler for automated preset recalling. RS-232 interface for extensive PC-based setup and control. Windows® PC software for controlling and programming Programmable remote control with RS-485 interface on industry-standard RJ-45 connector.
2. Products The Martin Audio Engineer product line comprises 2 products and 2 accessories. Engineer 418 4 input-8 output advanced audio Digital Signal Processing device. 100-240V AC input. Housing is 19” rack mounted. Audio in- and outputs on balanced Phoenix terminal blocks. RS485 interface for remote control panel and third party control connection, RS-232 interface for extensive PC-based setup and control. Engineer 818 8 input-8 output advanced audio Digital Signal Processing device.
Engineer Remote Remote control panel for Martin Audio Engineer 418 and Martin Audio Engineer 818. Enables remote recall of presets and remote control of zone volumes, The Martin Audio Engineer Remote is connected to and powered from a dedicated RS-485 port on the Martin Audio Engineer 418 or Martin Audio Engineer 818. This accessory is included with every Martin Audio Engineer 418 and Martin Audio Engineer 818.
3: Engineer 418 Included Items In the box containing this manual, the following items should be present: 1 Martin Audio Ltd.
Rear Panel layout 1 Audio Inputs 2 Audio Outputs 3 RS-485 port (RJ45 connector) 4 Power connector 5 Fuse Holder + audio hot - audio cold audio ground Engineer 418 & 818 User Manual Page 15
Installation requirements The Martin Audio Engineer 418 is designed for 19” rack-mount use. Mount the Martin Audio Engineer 418 with racking screws in a 19” cabinet. Use support strips as necessary to support the rear of the device. Adequate ventilation and rear-support must be provided. Allow for enough ventilation into the 19” cabinet in which the Martin Audio Engineer 418 is mounted. Observe the environmental specifications (see appendix 2) at all times.
Connection instructions for Phoenix terminal blocks To connect the Phoenix terminal blocks, always use the following procedure: strip the jacket 20mm strip the wires 7 mm DO NOT pre tin the wires cover the ground wire with a heat shrink sleeving put the wire up to the plastic sleeve in the terminal block use a small flathead screwdriver to firmly close the contact make a strain relief so no stain is on the connection for suitable wire thickness, please refer to the table below 2 Conductor
Connecting RS-232 On the front of the device is the RS-232 port for remote control and configuration of the device with a PC with the supplied Windows® Engineer software. To connect the Martin Audio Engineer to a PC use the supplied RS232 cable only. This cable is 1:1 connected, fully wired, one side fitted with a Male DB9 connector, other side a Female DB9 connector. If a longer cable is required please observe that the maximum operational cable length is typically 45 feet.
Power switch The Martin Audio Engineer 418 has a power switch which is accessible through the hole in the front panel (please refer to the front panel layout). Although the device is designed to be left on at all times, it is possible to un-power the device with this switch. To switch ON/OFF, use a Philips #1 screwdriver to operate the power switch through the hole.
4: Engineer 818 Included Items In the box containing this manual, the following items should be present: 1 Martin Audio Ltd.
Rear Panel layout 1 Audio Inputs 2 Audio Outputs 3 RS-485 port (RJ45 connector) 4 Power connector 5 Fuse Holder + - audio hot audio cold audio ground Engineer 418 & 818 User Manual Page 21
Installation requirements The Martin Audio Engineer 818 is designed for 19” rack-mount use. Mount the Martin Audio Engineer 818 with racking screws in a 19” cabinet. Use support strips as necessary to support the rear of the device. Adequate ventilation and rear-support must be provided. Allow for enough ventilation into the 19” cabinet in which the Martin Audio Engineer 818 is mounted. Observe the environmental specifications (see appendix 2) at all times.
Connection instructions for Phoenix terminal blocks To connect the Phoenix terminal blocks, always use the following procedure: strip the jacket 20mm strip the wires 7 mm in case of stranded wires, pre tin the wires cover the ground wire with a heat shrink sleeving put the wire up to the plastic sleeve in the terminal block use a small flathead screwdriver to firmly close the contact make a strain relief so no stain is on the connection for suitable wire thickness, please refer to the table
Connecting RS-232 On the front of the device is the RS-232 port for remote control and configuration of the device with a PC with the supplied Windows® Engineer software. To connect the Martin Audio Engineer to a PC use the supplied RS232 cable only This cable is 1:1 connected, fully wired, one side fitted with a Male DB9 connector, other side a Female DB9 connector. If a longer cable is required please observe that the maximum operational cable length is typically 45 feet.
Power switch The Martin Audio Engineer 818 has a power switch which is accessible through the hole in the front panel (please refer to the front panel layout). Although the device is designed to be left on at all times, it is possible to un-power the device with this switch. To switch ON/OFF, use a Philips 1 screwdriver to operate the power switch through the hole.
5: Engineer Remote When the user has created zones and presets on the Martin Audio Engineer 418/818 with the supplied Windows® PC software, the Engineer Remote (supplied with the Martin Audio Engineer 418 or Martin Audio Engineer 818) can be used to recall presets and control the volume of the zones on the Martin Audio Engineer 418 or Martin Audio Engineer 818. (For more information please see the software manual.
Installation The Martin Audio Engineer Remote panel is to be mounted onto a standard DIN installation box and finish cover. The figure below shows how to install the product into the installation box.
Power The Engineer Remote is powered from the Martin Audio Engineer 418 or Martin Audio Engineer 818 with a 5 volt DC power supply, incorporated in the RS-485 connector, no external power supply is required. Wiring The Engineer Remote is connected through the RS-485 connector on RJ-45 plug on the backside of the device. The maximum operational cable length is typically 1000 ft. on CAT-5 (Unshielded Twisted Pairs) cable. (e.g.
Wiring scheme Please make sure that the wires are properly connected according to the wiring scheme below: PIN FUNCTION RJ-45 CONNECTOR CABLE PART REMOTE HEADER 1 DATA OUT + 1 - ORANGE/WHITE 1 -ORANGE/WHITE 2 DATA OUT - 2 - ORANGE 2 -ORANGE 3 DATA IN + 3 - GREEN/WHITE 3 - GREEN/WHITE 4 POWER + 5 Volt 4- BLUE 4 - GREEN 5 POWER + 5 Volt 5 - BLUE/WHITE 5 - BLUE & BLUE/WHITE 6 DATA IN - 6 - GREEN 6 - BROWN & BROWN/WHITE 7 GROUND 7 - BROWN/WHITE 8 GROUND 8 -BROWN Warning!: the
Header The Engineer Remote features a Wago terminal block 6-way header for the connection of the CAT5 cable. To connect the cable to the header, strip the wires 7mm, use a small flathead screwdriver to firmly press down one of the header pins, put the wire in the appropriate header hole and release the screwdriver. Do not press down on two or more header pins at the same time; this may result in damage to the Engineer Remote.
Recalling presets To recall a preset from the Martin Audio Engineer Remote, just press the ‘Preset’ up or down button, the display will show ‘selecting’ and the name of the preset. After 3 seconds the currently selected preset is recalled. Refer to the software chapter for creating and assigning presets. Changing volumes To change the volume of a zone, just press one off the ‘Zone’ up or down buttons.
6: Troubleshooting Power If a Martin Audio Engineer 418 or Martin Audio Engineer 818 shows no power Check the Engineer 418/818’s power switch Check that the power source is functional, and ground, neutral and live connections are properly seated Check the power lead for damage Check the Engineer 418/818’s fuse If the Engineer 418/818 still shows no power, contact your local Martin Audio Ltd.
Audio If no audio signal is entering the Martin Audio Engineer 418 or Martin Audio Engineer 818 Check that the Martin Audio Engineer 418 or Martin Audio Engineer 818 is powered Check if you are actually sending audio to the Martin Audio Engineer 418 or Martin Audio Engineer 818 by checking the input meters in the Engineer PC software (see the software chapter) Check if all the gains, mutes and routing settings are set correctly in the Engineer PC software (see the software chapter) Check the proper
7: Maintenance Housing Clean the exterior housing with a slightly moist, lint free cloth. Do not use abrasive cleaning agents. If a product is used in a dusty environment (or in combination with smoke-machine oil) regular cleaning of the internal fan by qualified personnel may be required. Servicing Do not open this unit. Doing so will void warranty and might present a risk. Servicing must be performed by qualified personnel only.
8: Software Introduction The Martin Audio Engineer is a powerful, advanced DSP platform meant for audio installations. It features 4 or 8 inputs and 8 outputs with extensive, flexible routing and cross-over functionality. On top of the ‘normal’ cross-over and routing functionality it features two unique highly advanced specialist audio algorithms.
Before you start The Engineer control software was designed to work with either Windows Vista, Windows XP or Windows 7 (32 bit). Although it might work with older version of Windows this isn’t officially supported.
Installation To install the Martin Audio Engineer control software, simply insert the CD-ROM provided with the device. The installation software will automatically start. If this is not the case, please open the "My computer" dialog, located on your desktop or start menu. Select the CD or DVD drive containing the Martin Audio Engineer software and double-click on the "Engineer.msi" file. You should now see the installation wizard. Please follow the instructions on your screen to complete the installation.
Concepts and terminology The Engineer was designed with a few concepts in mind, which we’ll try and explain in this chapter. Presets, projects and the workspace The Engineer can store up to 28 presets at one time. A preset is a predefined combination of settings you’ve made, which can all be recalled simultaneously with a click of your mouse, using the remote control or the built-in scheduler.
Synchronization Each time you start the Engineer control software you will be asked to synchronize the software with the project stored on the Engineer itself. Synchronization is an important concept that ensures that whatever it is you’re controlling from the software actually represents the settings stored on the device. You should always synchronize before working on a project with an Engineer connected.
Security Logging in If you plan on using the Engineer mk2 Control Software for everyday use, you’ll want some way of preventing incapable hands from controlling crucial system parameters that can potentially destroy an entire PA system.
How it works Features unavailable at the current access level are either disabled or hidden from the user.
Main control On synchronization completion, you’ll be presented with the routing screen. This offers you a nice overview of the features available in the device. Let’s take a look. The routing matrix The largest part of this screen is taken up by the routing matrix, which allows you to control the path you audio signal will travel through the device. All available input channels are positioned to the left of the matrix, while the outputs are shown at the bottom.
Effects channels As you might have noticed, there are four extra channels available beneath the input channels. These are return channels for the Engineer and BassCreator effects. Since the BassCreator and Engineer are stereo effects, all routing towards the effect channels must be done in stereo as well. You can use the large nodes between the routing matrix and input effects for this purpose. Just like the mono-routed nodes, use the right mouse button to adjust the gain of a specific node.
Labelling your channels For efficient usage of your program without the hassle of having to remember which (numbered) output represents the audio channel you want to control, we recommend labelling your channels. This can be done easily from the routing screen by simply updating the text within the gray boxes beside each in and output channel. The corresponding tabs in the program will automatically be updated with this name and all labels are stored on the device for future usage.
The following types of EQ filters are available; Bell filters Low-shelving filters High-shelving filters Band-pass filters Band reject filters (notch filters) nd 2 order all-pass filters (affects phase only) Filter bypass (no EQ) The filter graph can be expanded by clicking on the right of the graph. The vertical scale can also be trimmed to get the best view of your EQ using the ‘Zoom’ control.
The output channel tab All output settings are grouped on a per-channel base within the output tab. You can access this through the output settings tab or from the main routing screen by pressing the corresponding button in the routing overview. Each output channel features an eight-band parametric EQ, crossover filers, polarity, delay and gain settings and an output-limiter. The EQ and crossover filter settings can be switched from the top-right part of this tab.
To change the gain, Q/bandwidth/slope for each filter, use the numerical values next to the filter type. Double clicking each value will pop-up a window in which you can use a slide bar to adjust the selected value. Another option to change each filter’s parameters is by dragging each filter in the visual overview to their position. Use the scroll-wheel of the mouse to adjust the selected filters Q/bandwidth/slope.
Output tab Save, Load, Copy & Paste Buttons There is also a Save and Load button. These buttons are used for saving or loading all output parameters to a file. This makes designing complex projects with different speakers on each output very simple indeed. The Engineer Mk2 software installation file includes output files for most Martin Audio speakers which can easily be loaded into any of the outputs.
Engineer algorithm concept One of the main features of the Martin Audio Engineer is the Engineer algorithm itself. Think of the Engineer algorithm as a real-life sound engineer whom you can tell what kind of sound you'd like from your sound system. The underlying technology is quite complex and for this reason the system has been split up into a simple and an advanced mode. The problem First, let’s look at the reason why one might want to use the Engineer algorithm.
This example describes a very common situation which we see happening every day in venues all over the world. This problem is actually not anybody’s fault; it’s just the way things evolve through the years and the result of different opinions of how things should sound. But it is a problem that we have to deal with. On way to overcome this problem is what we call the ‘radio station solution’.
The solution We’ve solved the issue described above for you by creating an algorithm that reacts in the same way as a normal sound engineer would do, hence the name ‘Engineer’. The Engineer works with human-based perceptive algorithms which react the same way as a normal human being would.
might need. Please make sure to read this chapter of the manual if you plan to use the Advanced mode as it will help you get the most from this feature. The Engineer features three automated controls; an automated volume control and two automatic EQ’s. It also features three end-stop peak limiters.
The big picture Before attempting to configure the algorithm, let’s take a look at the main parameters that will come into play. The figure above gives us an idea of the problem to solve and the tools at our disposal: The blue line represents the input volume offered to the algorithm; the red line depicts the overall volume we would like as the output volume. The goal is to modify our input volume in a way it will be in between the orange lines marked “Tolerance” by the time we’re done.
Determining the source frequency range Each of the automated controls has its own domain of operation: The leveller takes care of the overall volume; the automated EQ’s take care of the treble and bass. The frequency domain you want each of these controls to work their magic on can be determined by setting their respective frequency range. Typically, you’ll want to adapt this setting to the type of music you’ll be playing most.
The three end stop limiters have a frequency range that’s determined from the frequency range you entered for the automatic EQ’s. In the figure above you can see how they correspond to these frequency ranges. Setting the Autocatch Remember the target level we discussed on the last page? We haven’t talked about the way this is determined yet. To set this to level, we’ll need to use the “Autocatch” feature. The Autocatch determines the treble and bass content we want our Engineer to look for.
When you’re satisfied with the sound you’re hearing, press the Autocatch button in the top-right corner of the Engineer advanced screen. It’ll remember the sound you want for this preset. You can set different values for the target bass and treble in each preset, so you might want to create separate settings for different types of music.
The max-boost is the amount of gain you allow your Engineer to add to the input level to reach the target level you set using the “Autocatch” feature. The max-cut is the amount of you allow your Engineer to deduct from the input level to reach the target level you set using the “Autocatch” feature.
But when should the algorithm start to correct the input level? In some cases you might not mind small variations in the level, or will want to allow for short periods of loudness. This can be set by the reaction time and tolerance. These parameters do just what their name suggests: The reaction time is the time in seconds a louder or softer level will be allowed, after this your engineer will kick in and correct the signal.
Exit equalizer Still not satisfied with the results you’re getting? The Engineer allows you to make some final adjustments before the routed signal movies on. You can use the exit equalizer for this purpose. Press the “Edit in new window” button to open it up.
Engineer simple control Of course, the settings made in the Engineer Advanced overview aren’t suited for day to day usage. For this purpose, a simple control centre can be found from the “Engineer” tab. It contains only three settings that should look familiar to anyone: A slide for bass, one for treble and an overall volume slide. The level indicators to the right depict the stereo in and output levels for the Engineer. The Engineer Simple control is available from access level 0 (meaning to anyone).
Basscreator algorithm Concept The Basscreator algorithm creates a virtual bass based on the "lost fundamental" principle: It creates a range of higher harmonics of a narrow frequency band around a used specified centre frequency. This is a psychoacoustical effect that fools your brains to think something is going on in the bass frequency range.
Controlling the Basscreator To start using the Basscreator you should first route the inputs you want to use it on toward the Basscreator module in the Routing tab. Then select the Basscreator tab to control its settings. First, select the frequency you want to set as the perceived bass. The best value for this setting depends on the genre of music you'll be playing most regularly and the size of you speaker system.
Presets and projects If you’ve experimented with the software already, you’ve probably noticed the preset overview fixed in the top right of the window. This allows you to store and retrieve up to 28 presets of five different types on the Engineer. The preset type you’ll probably use most is the “complete” type. This stores all settings you made in the device into a preset. This means all settings can be recalled at will.
you will have to update every single preset or the sound will revert back to the original settings when the presets are recalled. If the presets you need are routing and level changes, consider using a routing preset, don’t forget that routing nodes can also have gain changes, these are also recalled in a routing preset. Separate presets can be saved to file, or imported from them. A combination of presets (everything stored in a device at one time) is called a project.
Linking channels Each input and output can be linked into a stereo pair. This means channels 1 and 2, 3 and 4, and so forth can be controlled as one. To use this option select the “Stereo link” tool from the edit menu in the program’s toolbar. From here, you can select each channel you want to link. As soon as you hit “Apply” or “OK” each second (even) channel will start using its partner’s settings. This can result in sudden changes in outbound signal levels, so take care not to damage any equipment.
Zoning output channels The Engineer allows you to assign output channels to up to eight zones. For each zone the volume can be adjusted, affecting every channel assigned to it. This way, you can separate different regions of your venue and assign volumes accordingly, using either the software or the remote control (see the remote control chapter for further information). Zones can only be assigned when logged in at security level 3.
Daylight saving The Engineer offers the possibility of automatically adapting to daylight saving time changes. The time and date daylight saving starts and stops differs per country, so you will need to let the device know when to update its time accordingly. This can be done from the “edit” menu in the application’s top menu bar, available from the highest security level (3) only. When clicked, a window will open up allowing you to adjust the daylight savings setting.
Scheduler The Engineer features an advanced scheduling system, allowing you to adjust your venues sound set-up automatically at any given time, or plan one-time changes in advance. The system is based on preconfigured presets that will be triggered at any point in time that you define. This can be daily, weekly, or one time only. To start using this feature, create the preset you require for each event, and select the scheduler tab.
Limiter overview So, you’ve got everything set up the way you want it? All there’s left to do is disconnect your computer and sit back and relax. If set up properly, your automated sound engineer will be doing all the work for you. Just in case you want to use the software to keep an eye on things, there’s a tab page available showing you the limiter status of all eight output channels.
Preferences The Engineer Control software offers two user-configurable settings, which can be changed from the preferences dialog. You can open this dialog from the “edit” menu in the program’s toolbar. The first option you can select in this dialog is the render quality. This affects the quality in which the program’s graphics will be drawn to your screen, most notably the graphic representation of the equalizers and crossovers. By default, this option is set to “High quality”.
Usage tips Here are some general tips on using the software: Double click any of the numeric values to have a slider bar pop up that lets you adjust values fast Right click the routing nodes to apply a gain adjustment at that point. This also works with the large stereo nodes on the inputs. Double click any of the graphical equalizers to have a separate version of it pop up in a new window.
Frequently asked question Q: What are the default passwords? A: By default, only one password is used, which offers access to all functionality. Using this password you can change the passwords for all access levels. The default password is: “MA” (not case sensitive). Q: I forgot my password! Please give me the master password. A: There is no master password. If there was, it would spread amongst users in no time. A publicly known master password defeats the purpose of using passwords for security.
Q: I’m getting pop-ups with error messages; the software hangs or even crashes. What to do? A: The first thing to do is to check if you have the Microsoft .Net framework version 2.0 or above installed. You can get it from the Microsoft.com website. If this doesn’t resolve the issue, please reinstall the latest version of the Engineer software. If the problem still remains, please let us know, so that we can fix the issue.
Preset and Zone Communication Protocol Introduction As mentioned previously, the Engineer 418 and 818 can form part of a more complex system controlled via either the RS232 port on the front or the RS485 port on the rear of the device, taking the place of the Engineer remote. Systems such as AMX and Crestron can be programmed to control the same functions as the Engineer remote; recalling presets, selecting zones and adjusting the zone volumes.
Recalling presets Preset recalls work on an index basis. This means you'll need to know the preset number you want to recall. You can check out the index that goes with each preset using the Engineer control software's preset management window: Downsync your project first, then hover your mouse for about 3 seconds over any preset in the preset manager. The index will then be shown in the preset information.
To recall this preset we would now do the following: Open a connection to the device Set the RTS pen Wait for 10 ms Send package 254 14 0 0 255 12 Reset the RTS pin Setting master- and zone volumes Zone volumes can also be set using their respective index.
The third variable in our information package is the checksum, which is defined in the same way as described above: The sum of bytes 0 to 3 combined with a binary AND calculation with 127. The gain information package is defined as follows: Byte index 0 1 2 3 4 5 Data 254 12 Node index Gain index 255 Checksum Again, an example.
9: Engineer 418/818 Specifications Mechanical Size (physical), WxHxD Weight (physical) (NS12P) Ingress protection rating - - (W) 483mm x (H) 44mm x (D) 251mm (W) 19inch (H) 1.75 inch (D) 9.89inch 3.35 kg. (4.35 kg. Shipping) IP20 Electrical Input voltage, frequency Power rating Fuse Internal battery - 100-240V AC 50-60Hz 30 Watt 630 mA SlowBlow, 20 x 5mm 5,5V goldcapp - 0-45 deg. C -10 – +60 deg.
Audio INPUTS IMPEDANCE CMRR OUTPUTS SOURCE IMP. MIN. LOAD MAX. LEVEL FREQUENCY RESP. A/D DYNAMIC RANGE D/A DYNAMIC RANGE IN-OUT DYNAMIC RANGE DISTORTION MAXIMUM DELAY - electronically balanced > 25k ohms > 70dB 20Hz-20kHz electronically balanced < 60 ohms 600 ohm +20dBU +- 0.1dB 8Hz – 20 kHz > 115dB Unweighted > 112dB Unweighted > 110dB Unweighted 0.0035% @1kHz 0dBU 10ms. /output (increment 2 microseconds.) - 24 bits 48 kHz 32 bits floating point - adjustable +12dB to –inf.dB in 0.
High-And Lowpass Filters FILTERS FREQUENCY RESPONSE - One of each per output 20Hz – 20 kHz Bessel, Butterworth, Linkwitz-Riley 12/18/24 dB/oct - +20dBU to –43 dBU ½, ¼, 1/6, 1/8 times the release time 49ms to 2000ms - freely insert-able on any output virtual 30Hz to 120Hz drive, mix level - freely insert-able on any input -45dB to +22 Db - system, routing, noise emission, engineer 28 user-accessible presets - 3 security levels with user assignable passwords security settings are stored within t
