Pro Audio Microphones & Wireless Systems

Professional Audio Wireless Microphone Systems

Professional audio wireless systems are designed to provide the utmost sound clarity possible. In addition to providing great audio, wireless systems are better for some visual presentations since they do not require long cables. There are many competitors in the wireless system industry, such as Yamaha, Audio-Technica, and Sennheiser.

• A digital system that features easy operation with instant syncs and setup.
• One that has three levels of diversity assurance: frequency, time, and space.
• Mics that monitor 2.4 GHz-band activity and adjust to the most reliable signal.
• Microphones that operate at a range of 100 inches or greater in an open environment with no interference, and those that have a latency of 4 ms or less.

In order for wireless systems to work, they need some kind of transmitter. A typical body-pack transmitter has both low and high impedance. Due to a 5V DC connection, it can be used with condenser and dynamic microphones as well as Hi-Z instrument pickups. It is generally powered by two AA batteries, and the RF power output is 30 mW High and 10, switchable, mW Low at 50 ohms.

Wireless microphones operate at a variety of radio frequencies, such as 90 MHz or 1.8 GHz. In some cases, these frequencies can cause interferences with other devices. Due to there being many ranges, a radio frequency finder simplifies the process of setting up your wireless microphones and saves you a lot of time. The finder scans the local broadcast signals and recommends which range of frequencies to use.

• The digital system operates outside of the 3G and DTV bands and allows for a mic to be used without experiencing any interference.
• It can chain up to 10 receivers, which can be used at the same time without any coordination or group selection issues.
• The microphones do not compress the audio data during transmission and reception.
• The wireless mics provide 24-bit audio operation in the 2.4 GHz range.

These digital systems incorporate useful features, such as the ability to automatically determine the top frequency channels open. As you increase your number of systems, this immensely helps with any potential intermodulation or interference issues. A ground-lift switch reduces any audible hums that are caused by ground loops.

• These systems typically support up to eight simultaneously operating units.
• A handheld dynamic unidirectional microphone/transmitter may be included with the units.
• The majority of Sennheisers are designed so that the mics operate in 24-bit on the 2.4GHz range.
• Many Sennheisers allow you to select from multiple receivers.
• Both balanced XLR and unbalanced 1/4-inch output jacks are found on most of their wireless units.