Schoeps Linear ORTF-3D Outdoor Set

8-Channel ORTF-3D Outdoor Kit for Immersive Recording with Windshield

• 8-channel 3D sound field set with directional preference, e.g., for Dolby Atmos
• Suitable for off-center positions, such as high points on stadium grandstands
• 4 two-channel basket-style windshields with fur lining (RADIUS Mini-Alto MS) mounted on a 1-meter stereo boom
• Each windshield houses a vertical XY pair of CCM 41 and CCM 41V supercardioid microphones
• Integrated heating for continuous outdoor use
• Suspended or stand-mounted installation
• Plug-and-Play set complete with cables, heating system, and power supply
• Ideal for sports events, live film sound recording, and more

The Schoeps Linear ORTF-3D Outdoor Set is an eight-channel 3D ambient recording system based on Schoeps’ proven ORTF-3D technique. The microphone system, developed by Felix Krückels (Darmstadt University of Applied Sciences, sound engineer and consultant) and Helmut Wittek (Schoeps), delivers a realistic and spatially balanced soundstage across eight channels—for example, for Dolby Atmos—even when the microphone cannot be positioned at the center of the action, such as at the highest points of a soccer stadium’s stands. Like the ORTF-3D Outdoor Set, it is a plug-and-play solution that works immediately and reliably, even during continuous outdoor use.

Linear ORTF-3D with Directional Bias for Dolby Atmos

Unlike the classic ORTF-3D configuration, the Linear ORTF-3D has a clear directional preference: it emphasizes the front hemisphere and attenuates sounds coming from the rear. Although it records directionally, the high decorrelation between the channels creates a natural and spatially coherent sound image, which acoustically compensates for the microphone’s off-center position.

Immersive Environments from Off-Center Positions

This configuration is designed for all situations where you cannot place the array at the center of the scene: environments at sporting events, live sound recording for film, and, more generally, immersive recordings from a side or elevated position.

Four vertical XY pairs with CCM 41 and CCM 41V

The set consists of a 1-meter stereo bar mounted with four two-channel, fur-lined basket-style windshields. Each windshield houses a vertical XY pair consisting of a CCM 41 on the lower layer and a CCM 41V on the upper layer, both supercardioid, for a total of eight channels.

Built-in heating for permanent outdoor use

The integrated heating system allows the set to remain permanently installed outdoors. The set can be suspended or mounted on a stand using the bar, which features four 3/8" threaded pins and a central 3/8" threaded bushing.

Set Contents

• 4 x CCM 41 (No. 221217), supercardioid microphones, lower layer
• 4 x CCM 41V (No. 221101), supercardioid microphones, upper layer
• 8 x K 5 LU (No. 152004), 5-meter extension cables for the microphones
• 1 x quadruple heating system for Linear ORTF-3D (No. 253704), with breakout cable (4 cables to XLR 4M)
• 1 x PS-H IEC (No. 253703), power supply for the heating system (XLR4F, IEC input)
• 1 x stereo bar for Linear ORTF-3D (No. 805023), 1 m, with 4 3/8" threaded pins and 1 central 3/8" threaded socket
• 4 x basket-style windshields for Linear ORTF-3D (No. 176302), with fur, for two microphones

Technical Specifications

• Brand: Schoeps
• Model: Linear ORTF-3D Outdoor Set
• Type: 8-channel 3D ambient microphone set, with directional preference
• Configuration: 4 vertical XY pairs on a 1-meter stereo boom
• Microphones: 4 CCM 41 (lower layer) and 4 CCM 41V (upper layer), supercardioid
• Windshields: 4 two-channel basket-style windshields with fur (RADIUS Mini-Alto MS)
• Heating: Integrated quadruple system with PS-H IEC power supply
• Cables: 8 x 5-meter K 5 LU extension cables
• Mounting: suspended or on a stand; bar with 4 3/8" pins and a 3/8" center bushing
• Applications: sports venues, film sound recording, immersive productions (e.g., Dolby Atmos)
• Development: Felix Krückels and Helmut Wittek