TOA Electronics, Inc. is dedicated to the development, manufacturing and distribution of premier audio products. TOA Corporation was founded in Kobe, Japan over 80 years ago. All of TOA’s products bear its name. TOA operates in over 100 countries worldwide, with manufacturing facilities are found in nearly every major market area. TOA’s extensive line of audio products includes amplifiers, speakers, mixers, wireless microphone systems, digital processors and network audio.
In this tutorial you will become familiar with the Main Settings Window in the TOA 9000M2 GUI Software application.
The Scene Memory View displays the list of 32 SCENE memories, as well as the currently selected scene. A SCENE is a memory preset containing all of the channel and routing settings associated with a given application. Each scene may be named and also assigned to be a power-on default.
The Main I/O Configuration View - This window provides an overview of the entire unit’s Input / Output configuration. It will show all channel names, available DSP & signal routing. Clicking on any “block” will call up that parameter in the edit window below.
The Active Edit View displays the currently selected parameter. When editing a parameter in the main view window, that channel & the specific parameter will be highlighted in both windows.
By Rick Escobar - Product Support Assistant Manager We have all been there. Something we are working on just will not work and we find our shelves stumped. I’m going to do my best to offer a process for working through any problem. Where’s the problem? It’s often the simple stuff that gets you. I find it best to first establish where it is working and reverse engineer from there. Let’s take a simple system that consists of an iPod audio source, amplifier/mixer, and speakers. In this case everything seems fine but no sound is coming out of the speakers. Is there signal from the iPod? Using a pair of head phones will quickly establish if there is a signal.
Test the Cable Is the volume up on the amplifier? Try different Inputs. Is there an auxiliary output you can listen to?If the amplifier is verified as working then try a short cable to a known working speaker and connect to your amplifier output. This will rule out any wiring issues. Now let’s look at some tools useful for troubleshooting.
Product Knowledge: Having some information on the product capabilities and requirements can be invaluable. This is especially true for more complicated systems. This includes reading the manual, no one likes to do it but the solution may be just an index away. Of with a PDF ctrl F and a key word search is your friend.
System Knowledge: For example a microphones require pre amplification so hooking up to a line level input may produce nothing or a very low signal. The Devil will be in the details.
The Internet: It’s amazing the amount of information that is out there. Sometimes a quick search will turn up a quick solution. I may be someone has already had the same issue. This also would include user groups. There are tons of these for all kinds of subjects and in general these groups are very helpful.
Tech Support: When all else fails, break glass in case of emergency.
How to explain a problem so that even an engineer will understand it. The best problem descriptions look more like a cooking recipe than anything else. You will get what is a being made, a summary of what it may taste like and steps to reproduce and an expected result. Here’s a example of a Cake Gone Bad: Mom's Chocolate Cake Summary: The Cake did not rise Recipe: Mix batter per instructions Cook at 325 for 2 hours Result: Cake did not rise Expected: Cake should have risen
Now the chief could look at this, review the mixing instructions and other steps. Maybe it was the incorrect temperature, maybe the yeast was bad. But from this point it is easy to keep moving forward to find a solution. I tried to keep this short and to the point, of course a complicated problem can be very time intensive but the process of moving forward to a solution pretty much stays the same. When all else fails, don't hesitate to give my team a call at 800-733-4748.
By Sean Barton - TOA Area Systems Engineer for the Western Region
Ever wonder how to program a D-901 mixer quickly without a computer? While you can always program the D-901 Digital Mixer with the TOA GUI software, you can also quickly configure powerful features right from the front panel! Here are the top 5 techniques to program the D-901 without ever turning on your computer:
Assigning Inputs to Outputs - Assigning an audio source input to an output is one of the simplest programming features on the D-901 the front panel. To do this, simply hold down the desired Input Channel Selector button, then press the desired Output Channel Selector Buttons that correspond to where you want to send the source signal. As you do this you will see your outputs indicated on the front panel LCD screen.
Assign a Source to the Mic Bus - Sources that are assigned to the Mic Bus are routed through a 12-band feedback suppressor with fixed or dynamic frequencies. To assign a source to the Mic Bus, simply hold down the desired Input Channel Selector button and then press the Microphone Bus Selector Key [SEL]. As you do this you will see "M" the front panel LCD screen indicating if the input channel is assigned to the Mic Bus. BONUS TIP: The default mic bus setting for all channel inputs is ON. For a new install, be sure to disengage the mic bus for each input to start from scratch.
Change The Mic Bus Output Settings - Out of the box, the D-901 Mic Bus defaults to be routed to all 8 outputs. To change the Mic Bus output assignments, simply press and hold the Mic Bus [SEL] button and rotate the Setting knob to select the output channel bus (1 - 8), then press the function ON/OFF key to enable or disable the assignment. When disabled (OFF), the "-" indication is displayed.
Save New Presets - When you write a new preset, always remember to save your work! To do this, simply press the left and right arrow keys to select the desired preset memory number to which you want to save your settings. Then, press the Setting knob to execute the function. You're done!
Stereo-Link Input Sources - Do you have a balanced stereo input signal? You can easily link two input channels so Input trim, EQ and other settings are shared between the channels. To do this, simply rotate the Setting Knob to select the channels to be Stereo-Linked. Then, press the function ON/OFF key to enable or disable the Stereo-Link setting.
Our Product Support Department is always here to help should you need any assistance. 888-733-4748
OK, so DSP (or Digital Signal Processors) are not new and today are as ubiquitous as smart phones. Most of them would seem to do just about everything it used to take a rack’s worth of gear to do (EQ, Compression, Delay, etc…). So what sets them apart? Well, that really depends on your application. A DSP used for a conferencing applications will likely use some very different tools (like auto echo-cancellation & auto mixing) from one used for a live venue (where things like Delay, Limiting & Crossover functions would be considered more vital). Many DSP units try to be all things to all people and while that may win points for versatility, there are often compromises with respect to each function. Others are focused more on particular applications. It is in this area where the TOA DP-K1 shines.
First, you should know (if you don’t already) that TOA is not a newcomer to the world of DSP. In fact, TOA introduced the very first, open architecture, multi-function, multi-channel DSP to the Pro/Commercial marketplace. The year was 1988 and the product was the SAORI. What followed was nothing less than a revolution for our industry. Even 25 years later, the SAORI has its fans and many units are still in operation today in venues throughout the world. The DP-K1 is one of the latest in a generation of legacy DSP products, the result of years of development and research by our engineers in Japan.
So what does the DP-K1 do? Well, it shares a modular architecture with other TOA DSP models (such as the D-901 & D-2000), making available a common “library” of Input, Output & Control options. It therefore allows a range of custom configurations (up to 8 In x 8 Out) depending on needs. Inside, the DP-K1 has a compliment of Input processing (Parametric EQ, Filters, Compression, Gate) & Output processing (more Parametric EQ, Filters, Compression, Delay & Crossover), with the ability to matrix inputs to outputs in any combination. While the DP-K1 obviously has ample tools to function primarily as a “back-end” processor for speaker system management, it can actually function as a DSP mixer when necessary (inputs can be set to Mic or Line level and most modules come equipped with preamp gain & phantom power). However, the real power of the DP-K1 comes right between the Inputs & the Outputs. Each of the 8 buses of the DP-K1 comes equipped with an independent Automatic Resonance control (or ARC) processor.
What the ARC processor does is truly unique and would normally require more extensive processing and hours spent by a trained acoustical or sound engineer. The DP-K1 is designed to compensate for resonant nodes which often occur in large acoustic spaces and which have a tendency to negatively impact intelligibility, especially with voice. What does all that techno-babble mean? Well, we’ve all been in a large church or school gymnasium at some point, right? Remember how the sound of the pastor’s voice seemed to ring on forever and you couldn’t make out a word? Or how the sound of bouncing basketballs seemed like a construction site and announcements left you wondering if the home team won or lost (guess that’s why we have scoreboards)? Anyway, that’s due to the hard surfaces and reflected sounds in the space which pile up at certain frequencies to the point where the amount of reflected sound energy exceeds the direct (or desired signal’s) energy. This happens most often at lower and sometimes mid-range frequencies. Not surprisingly, the result is -MUD! Over the years, efforts to solve this acoustic nightmare have yielded some real innovations. Today, line array speaker technology can help to focus the sound energy more directly to the listener and reduce the amount of reflected sound. Sometimes, acoustic treatment can be added to the space to help reduce reflections, though this solution is not always possible (think of a large gothic church) or cost-effective. Through DSP manipulation of the sound output, it is possible to reduce the energy at the frequencies that are the most troublesome. However, in many cases the problem may still persist or the equipment, time and expertise required to effectively resolve it is beyond the reach of most people.
Enter ARC. ARC is a patented TOA technology designed to streamline the process by which this type of solution is applied. By using the simple tools provide by the DP-K1, it’s relatively easy to measure the reverb characteristics (and thereby the resonant nodes) of any given space using just an everyday vocal microphone (no expensive reference mic required). By automatically compiling this data (something the DP-K1s processor does very quickly) it calculates the appropriate equalization curve necessary to reduce the nodal effects of the space and thereby greatly increasing the system’s intelligibility. This all done through the software interface via a networked PC. Up to 8 locations may be measured per ARC processor (allowing you to get the best “average” for the space). Unlike overall room EQ, where factors such as temperature, humidity and occupancy are important, ARC measurements taken when the space is empty and on a cool, dry day will be equally applicable when the room is filled to capacity and the temperature and humidity are much higher. These do not affect the nodal response to any great degree.
In a world flush with DSP products screaming for attention, the DP-K1 stands out as a unique and valuable tool, which should find itself into the arsenal of any sound system designer. Where problems like the ones described above are encountered, the DP-K1 is the solution. ARC processing may also be found in other TOA DSP products, like the M-633D and the new M-864D digital mixers. For a DP-K1 demo (yes, hearing IS believing), please contact your TOA Rep today. For more information visit the DP-K1 webpage by clicking here.
TOA Electronics, Inc., a subsidiary of TOA Corporation, revealed its new DP-SP3 Digital Speaker System Processor at InfoComm13. The DP-SP3 is 2-input x 6-output DSP operating at 24bit/96k resolution and is designed to handle all speaker system management functions. It is housed in a 1U chassis and can be connected to other system components via balanced removable Euro-block connectors. The DSP includes comprehensive tools for achieve optimized sound system performance including: 12-band filter section per channel (with a choice of parametric, Hi or Low shelving, HPF/LPF, notch, band-pass, all-pass & horn eq. different slope types are also selectable), Compression, Delay and Attenuation. The DP-SP3 can be programmed and controlled via proprietary GUI software connected via Ethernet to a Windows PC. It can also function with any web browser and allows access to basic functions (such as passwords and IP settings) plus a library of TOA speaker EQ/Crossover presets. The DP-SP3 may also be synchronized for preset selection along with the M-864D Digital Mixer by using the provided contact Ins & Outs. The DP-SP3 carries TOAs 5-year Audio Product Warranty.
