3DIO Free Space Binaural Microphone
The Free Space binaural microphone is the most affordable, high-quality binaural microphone on the market.
The integrated Primo EM172 microphone capsules are extremely sensitive and quiet. The EM172 capsules have a very natural presence, perfect for binaural recordings.
The Free Space delivers portable, professional quality binaural in the palm of your hand.
The Free Space has a very warm and solid response in the low to mid-range frequencies. This brings out the punch as well as provides low-end support for bass-heavy sounds.
The frequency response of the EM172 capsules used in the Free Space rolls off slightly above 10kHz. This is excellent for recording instruments with loud high frequencies like drum cymbals or strummed acoustic guitars.
It also prevents any harsh effects that are sometimes associated with binaural recordings using smaller capsules. The microphone works well in windy conditions even without protection.
Wind sounds realistic without affecting the binaural experience or overloading the microphones. Why does it sound so natural? The Free Space captures sound just like we hear sound in the real world with our own ears.
When you listen to a recording captured with the Free Space using headphones or 3D capable speakers, you hear the sound as if you were there at the time of recording. The effect is so powerful because the Free Space design is based on 13+ years of research into binaural technology and human hearing.
Standard Output The output of the Free Space binaural microphone is a stereo 3.5mm (1/8") output jack. Simply plug it in to your favorite stereo audio recorder or microphone pre-amp, and start recording true binaural audio. Mounting The Free Space comes standard with a 5/8" microphone stand adapter installed in the base. The microphone stand adapter is removable.
The base of the microphone has a 1/4"-20 female thread mounting hole that can be connected to a hot-shoe adapter or used to mount directly onto a tripod or grip handle. Battery The Free Space contains a 9V alkaline battery within the chassis.
The battery is used to power the microphone capsules. Microphone Capsules The Free Space uses matched Primo EM172 hi-sensitivity capsules. For more information, see the User Guide. For examples, see our Examples Page.
What's Included Every Free Space microphone ships with an 8" long 3.5mm (1/8") stereo TRS M2M cable. All Free Space microphones include the polyurethane ears. No need to purchase the prosthetic ear accessory. Specifications Dimensions: 7.5" x 4.5" x 4.5" | 190mm x 110mm x 110mm (WxHxD) Weight: 1.5 lbs | 680g Output: 3.5mm (1/8") stereo jack (mic level output) Mic Specifications Directional Pattern Omnidirectional Frequency range 100 Hz - 10kHz Sensitivity -28±3dB at 1kHz (0dB=1V/Pa) Rl=3.9KΩ, Vcc=5V S/N Ratio 80 dB at 1kHz Max. SPL, peak before clipping 122 dB SPL (Typ.) at 1kHz Distortion level 3% max Output impedance 2.4k Ω ± 30% at 1kHz (RL=3.9k Ω) Operating Voltage 5V (3V~10V) Microphone diameter 10 mm (0.39 in)
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