Sennheiser Microphone Field Recording Captures Ancient Redwood Symphony

Nature sound recordist Thomas Rex Beverly pushed the boundaries of Sennheiser microphone field recording when he documented California’s ancient redwood forests. His groundbreaking project used Sennheiser MKH RF condenser microphones to capture the hidden acoustic world of these towering giants, revealing sounds that most people will never experience. Beverly spent ten days in March 2024 and returned in October to climb one of these massive trees, using professional Sennheiser microphone field recording techniques at different heights to uncover the complete sonic story of an untouched redwood grove.

The project stands out as one of the most ambitious nature recording expeditions ever attempted. Beverly worked with the Sempervirens Fund, an organization dedicated to preserving redwood forests, to gain rare access to a protected grove in California’s Santa Cruz Mountains. These trees, some reaching 80 meters tall and believed to be 1,000 years old, provided the perfect setting for advanced Sennheiser microphone field recording without noise pollution or human interference.

Professional Equipment for Extreme Recording Conditions

Beverly’s fascination with trees began in childhood when he climbed oak trees with his father in Texas. This early connection sparked a lifelong interest in the stories trees tell through sound. Redwoods presented a unique challenge for Sennheiser microphone field recording because of their incredible height and protected status. As Beverly notes, more people have climbed Mount Everest than have climbed a redwood tree, highlighting just how rare this recording opportunity was.

The technical challenges required specialized Sennheiser microphone field recording equipment and careful planning. Recording at multiple heights demanded specialized climbing equipment and days of preparation. Beverly and two climbing guides used crossbows to shoot fishing lines over branches, gradually pulling thicker ropes through until they could establish climbing ropes. The process took three days of careful work to avoid damaging these ancient organisms.

Beverly’s equipment arsenal centered on Sennheiser MKH 8000 Series microphones, chosen specifically for their clarity, wide frequency response, and ability to capture subtle ambient sounds in challenging environments. His Sennheiser microphone field recording setup included the MKH 8020, MKH 8030, and MKH 8040 microphones in various configurations to capture the redwood grove’s diverse acoustics. The MKH 8020 proved particularly valuable for capturing the most subtle sounds because of its low self-noise and high sensitivity.

Advanced Recording Techniques Across Vertical Ecosystems

The difference in sound between the forest floor and 60-80 meters up proved dramatic for Sennheiser microphone field recording applications. Many redwood branches don’t begin until about 50 meters high, creating distinct sonic layers throughout the tree. Beverly positioned his Sennheiser microphones at the base, 30 meters up, 60 meters up, and 70 meters up, all recording simultaneously so listeners could experience the same sound events from different heights.

Beverly used a double ORTF setup of Sennheiser MKH 8040s for directional recording, pointing the microphones upward to capture tree canopy sounds while recording from the forest floor. He also tested MS stereo configurations with an MKH 8030 and 8040 combination. When wind gusts moved through the forest, the Sennheiser microphone field recording setup captured how the same weather event sounded completely different at various elevations.

The innovative 3D microphone arrays represented cutting-edge Sennheiser microphone field recording technology. Beverly built a 4.0.2 setup with four MKH 8020 omnidirectional microphones arranged in a square formation at the tree base, with two MKH 8040 microphones positioned above them. This arrangement captured the massive vertical component of the forest’s soundscape, adding depth and dimension impossible to achieve with traditional recording methods.

Capturing Internal Tree Sounds Through Contact Recording

Perhaps the most fascinating discovery came from combining traditional Sennheiser microphone field recording with contact microphones. Using contact mics placed directly on the bark, Beverly captured the unique crackling sound of water moving up through the xylem, the tissue responsible for transporting water and nutrients throughout the tree. The ambient sounds captured by the MKH 8040 microphones couldn’t detect these internal sounds, making contact mics essential for complete documentation.

This internal recording revealed an unexpected phenomenon through the Sennheiser microphone field recording project. When loud sounds like raven calls or owl hoots occurred nearby, the tree itself vibrated, and these sounds appeared on the contact microphones. Beverly could hear wildlife calls transmitted through the living wood, creating a completely new way of experiencing how sound interacts with these ancient organisms.

The combination of ambient sounds captured by traditional Sennheiser microphone field recording techniques with internal tree sounds from contact microphones provided unprecedented insight into these living giants. Beverly describes moving from the external environment to the internal life of the tree as both conceptually and sonically fascinating.

Canopy Recording at Extreme Heights

One of the most memorable Sennheiser microphone field recording experiences came when Beverly spent the night suspended 70 meters high in a tree boat, essentially a hammock attached to the redwood’s massive trunk. Using his MKH 8020 microphones in this elevated position, he recorded the faintest wind movements through the canopy while experiencing the forest from an entirely new perspective.

The quietness of redwood groves makes every sound event significant for Sennheiser microphone field recording purposes. Few animal species live in these environments, so when something happens – a branch breaking, an animal call, or even a distant tree falling – it stands out dramatically against the peaceful backdrop. During one windstorm, Beverly managed to capture the sound of a giant redwood falling in the distance, describing it as sounding like an explosion.

Beverly also experimented with the Sennheiser AMBEO VR ambisonics microphone to capture spatial audio across the vertical landscape of the trees. This advanced Sennheiser microphone field recording technique added another dimension to the sonic documentation of the redwood ecosystem.

Technical Innovation in Natural Sound Documentation

The Sennheiser microphone field recording project demonstrates how professional equipment can reveal hidden aspects of the natural world. The MKH 8000 Series microphones proved essential for capturing both the subtle ambient sounds of the forest floor and the delicate acoustic details high in the canopy. Their low self-noise and high sensitivity made it possible to record the quietest natural sounds while maintaining clarity and detail.

Beverly’s approach required managing complex Sennheiser microphone field recording equipment while suspended in climbing harnesses for hours. “Being in a harness for hours, dealing with batteries and SD cards, while trying to attach everything to the branches was tricky,” he explains. “But the reward of being able to capture sounds from the tree’s canopy and juxtapose that with the sounds from the forest floor made it all worth it.”

Preserving Ancient Acoustic Heritage

This pioneering Sennheiser microphone field recording effort showcases the power of combining cutting-edge audio technology with careful environmental access. Beverly’s work opens new possibilities for understanding how sound moves through vertical ecosystems and how different layers of forests create unique acoustic environments.

The recordings serve as both artistic achievement and scientific documentation, preserving the sonic heritage of California’s ancient redwoods for future generations. Through Beverly’s innovative Sennheiser microphone field recording approach and the precision of professional equipment, listeners can now experience the hidden symphony that plays continuously in these towering natural cathedrals, demonstrating the incredible potential of advanced field recording techniques in environmental documentation.

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