by Mark Boyer
Dynamic microphone
©iStockphoto.com/Kevin Russ
A dynamic microphone takes advantage of electromagnet effects. When a magnet moves past a wire (or coil of wire), the magnet induces current to flow in the wire. In a dynamic microphone, the diaphragm moves either a magnet or a coil when sound waves hit the diaphragm, and the movement creates a small current.
Prices: Microphones
The NADY U-81 OCTAVO wireless system comes with 8 wireless handheld microphones / transmitters, and a deluxe 8 channel UHF receiver with an external AC power supply. This system is designed to allow from one to eight persons to simultaneously use the microphones and the 8 channel receiver as the receiver has individual volume controls for each channel on the front panel. Built in LEDs identify the signal present and power on conditions. The handheld microphones are each powered by a 2 AA batteries. There is OFF/STANDBY/ON switch on the microphones. The 8 channel receiver plugs into PA system or other MIC 1/4" input jack with the included cable. The receiver has eight independent UHF receivers in one convenient, rugged, all-metal single rack mountable case .There is one COMBINED output jack that feeds the output of the eight microphones to your MIXER, Karaoke machine or PA system with the included 1/4" to 1/4" cable. There is also 8 BALANCED XLR jacks that can be used to send the individual microphone outputs to your mixer for independent control. NADY U-81 OCTAVO Receiver Specifications: RACK MOUNTABLE Receiving System Fixed Frequency crystal-controlled Dual antenna jacks for either onboard or remote antennas, can be mounted on the rear or the front Front panel Power ON/OFF switch Power ON LED, TX ON and AF signal level LED displays Noise-free transmitter ON/OFF operation Rear panel individual XLR Output jacks, Volume controls for each of the 8 channels, 8-Channels-Mixed AF Out 1/4" phone jack High performance - unmatched transparent audio with 120 dB dynamic range NADY U-81 OCTAVO System Contents: 8 Channel UHF wireless microphone receiver 8 Headset Microphones 7 Belt Pack Transmitters 2 individual front or rear mounted UHF antennas 3 ft 1/4" to 1/4" Microphone Cable 110V AC Adapter (16V DC output) Instruction Manual 1 Year Limited Warranty
$769.95
The Blue Mouse Microphone is one of the most versatile and snazzy-looking mics you'll ever lay eyes on. With a unique rotating capsule, the Mouse mic is a cardioid condenser which employs a hand-built single-membrane, large diaphragm capsule. Enclosed within a rotating spherical grille, the capsule can be positioned and adjusted in the smallest of spaces. Perfectly suited for broadcast and voiceover work, you'll find The Mouse equally at home in front of a kick drum, acoustic bass, electric bass amplifier, snare drum and any other sources where accurate reproduction of low frequency transients is desired. The amplifier consists of top-grade components such as polystyrene capacitors, metal film resistors, and hand-wound output transformers. The capsule is shockmounted in both the grille assembly and within the rotating grille armature to eliminate all outside low-end interference. Requires phantom power.
$999.00
