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In the second part we’d like to present you the remaining “Little Helpers” from Omnitronic. After we have focused on DI-Boxes, isolators, cable testers and signal switchers in the first part, it’s now about mini mixers and preamplifiers.

First comes the passive mini mixer OMNITRONIC LH-010, that can distribute the signal of four audio sources to one output. That makes it possible to create simple submixes or small mixers which can be extended with some channels for an additional group, for example for multitrack recordings or spot microphones. Another possibility is the use on stages to connect multiple guitars at the same time to avoid switching and disturbing noises during a concert. Different output levels of several guitars can already be adjusted in the run-up to a performance. Due to its passive construction, the LH-010 can also be used as 1 to 4 splitter, for example to supply multiple active speakers with the same signal without looping through all speakers. With two LH-010 the output signal of a mixer can be split for further processing in different media (PA, webcam, records, etc). Read more »

Let’s talk about the so called „Little Helpers“ from Omnitronic. They have already simplified or even saved quite a few events. In the first part of our series we are concentrating on devices which can rather be found on live settings. Installation and studio environment are the topics of the second part.

It is probably the absolute classic assistant in event industry: the DI-Box (DI means “direct injection”, sometimes also “direct input”). On live stages the DI-Box has to complete three missions at once. First of all, impedance transformation. To directly supply a signal from keyboards, synthesizers, electric guitars or basses into the multicore and finally into the FOH mixer, the very high-resistant output impedance of these instruments has to be transformed. Normally, an electric guitar has an output impedance of several thousand ohms whereas a microphone features only a few hundred ohms. Now, the DI-Box, from a technical point of view, transforms an instrument signal into a microphone signal – thus preparing the signal for further processing in a mixer. The inputs of the instruments’ amplifiers are equipped accordingly and thereby don’t have to be supplied with a transformed signal. Because of this it is possible to simultaneously tap the input signal of the DI-Box and to feed it into the amplifier, which is mostly used as stage monitor. Read more »

Cobra Net, that’s the solution for complex multi-channel installations for the audio field.

There are many solutions for multi-channel installations but not all of them will prove satisfactory. OMNITRONIC presents with its new CobraNet™ transmitters and processors today’s latest approach opening the door to a faster and more reliable audio solution, because existing local area networks (LAN) can be used.

Today the professional audio branch is often confronted with different needs: Fast working, tight schedules, low budgets and complex tasks must be considered. This balancing act can only succeed with a recent and well-engineered audio technology. CobraNet™ is such a technical solution not only making promises but also keeping them. The system was developed by Cirrus Logic (former Peak Audio) and is a combination of software, hardware and network protocols allowing real-time uncompressed, multi-channel, low-latency digital audio distribution over a standard Ethernet network. CobraNet™ is transmitted using standard Ethernet packets and a standard network infrastructure – this can be a financial advantage for large-scale audio installations like stadiums or convention centers, because they don’t need to install a new cable system. Read more »

We are frequently asked how to protect loudspeakers effectively via limiter. Most common loudspeaker controllers (like Omnitronic’s DXO-series) have an integrated limiter which is mostly not used or not used correctly.

In the following tutorial, we would like to show you how to adjust the limiter based on speaker-system and power amplifier.

For doing so, we need the following data:

– Speaker-system RMS-power and impedance

– Power amplifier voltage gain

As an example, we use several Omnitronic PAS-speaker-systems and the Omnitronic SMA-2000 power amplifier.

The popular Omnitronic PAS-212 has an RMS-power of 300 watts and an impedance of 8 ohms. By using the ohm’s law we can calculate which voltage is sent to the speaker-system at full output.

The formula is power P = Voltage U squared / Resistance R. By converting we get: Power P x Resistance R = Voltage U squared.

With values: 300 x 8 = 2400 Read more »

The preset we provide for the PSSO Compact Line Array is based on the last years’ experience and should help to find the perfect settings for your application.

For this setup, we use the following components:

8x PSSO CLA-228 at PSSO HP-1400 (Hi) and HP-2400 (Mid)

2x PSSO CLA-115 at PSSO HP-2400

4x PSSO CLA-118 at PSSO HP-3200

2x PSSO SUB-2180 at PSSO HP-3200

The gains of all power amplifiers are set to maximum.

Settings overview: Read more »