Michell Engineering Orbe SE

The Orbe SE by Michell Engineering is a British turntable designed on the basis of the Orbe. This compact version retains the key technical features of the original model while simplifying the structure by removing the double acrylic plinth. The turntable upholds Michell Engineering’s precision engineering principles.

Technical design: the suspended subchassis and its refinements

The Orbe SE is built on a spider-shaped structure (“Spider Edition”) that omits the costly acrylic plinth of the full Orbe. This configuration nevertheless retains the weighted pendulum subchassis, suspended by three springs on fixed towers that allow height adjustment. This dense, rigid platform supports the main bearing, the platter, and the tonearm, ensuring no relative movement between these critical elements.

The three-point suspension system is a core element, inherited from the GyroDec but refined for the Orbe. The springs, recently rubber-coated (a modification introduced in late 2021), ideally oscillate between 2 and 3 Hz when correctly adjusted. This particularly low frequency effectively isolates the subchassis from external vibrations. The suspension towers, mounted on a secondary acrylic base, allow precise adjustment of the subchassis height and level.

The 8 kg die-cast aluminum subchassis receives damping via a sticky black compound applied to its bead-blasted surface. This pendulum mass acts as a “sink for resonance,” draining unwanted vibrations away from the turntable’s sensitive components. The pendulum design ensures remarkable stability while maintaining isolation from external disturbances.

The inverted bearing: ingenious oil circulation

Unlike traditional designs, the Orbe SE’s main bearing places the rotation point at the top of the assembly rather than at the bottom. This inverted orientation enables complete lubrication of the bearing interior while the platter rotates. The secret lies in a modified Archimedes screw machined into the bearing’s inner bore.

The proprietary synthetic oil, with precisely calibrated viscosity, is drawn from a reservoir at the base of the main bearing up to the thrust ball at the top. This continuous upward movement ensures perfect lubrication along the entire path. The oil then returns to the reservoir via a drain port drilled through the bearing spindle. This system eliminates any potential noise or vibration generated by rotation, as the bearing literally runs on a constantly renewed oil film.

The hardened steel spindle rotates within a brass housing, a material pairing chosen for optimal tribological properties. The system requires a specific synthetic oil, typically a 5–30W synthetic ester motor oil according to some experienced users, although Michell recommends their proprietary oil to ensure proper circulation via the Archimedes screw.

The massive impedance-matched platter

The 60 mm thick black carbon-loaded acrylic platter is one of the major differences between the Orbe SE and the GyroDec. Weighing 5 kg, this massive platter made from an engineering polymer (often described as Delrin in the specifications) exhibits remarkable vibration-damping characteristics. Its material, acoustically similar to vinyl, provides a particularly neutral sonic character.

The substantial mass of the platter generates considerable inertia during rotation, directly contributing to speed stability. This rotating mass acts like a flywheel, smoothing out micro-variations in speed and keeping wow and flutter at imperceptible levels. Impedance matching between the platter and the vinyl record minimizes energy reflections at the interface, allowing more accurate groove tracing.

The platter sits on the inverted bearing without an intermediate pad, with the direct metal-to-polymer contact carefully calculated to optimize vibration drainage. The drive belt runs in a groove machined along the platter’s full height, providing wide latitude for height adjustment without compromising drive alignment.

Standalone motor and sophisticated power supply

The high-performance DC motor is completely separated from the turntable’s main structure. This standalone unit has no physical contact with the chassis; the drive belt is the only connection between motor and platter. This total isolation prevents any transmission of vibrations or motor noise to the turntable’s sensitive parts.

The power supply Orbe Controller is the most sophisticated system developed by Michell. It incorporates a large toroidal transformer, minimizing stray electromagnetic radiation. The Never Connected circuit is a major innovation: it electrically isolates the powered circuit from the mains while maintaining continuous supply. This technology, whose precise details remain proprietary, uses a form of active rectification with a short conduction angle to charge the reservoir capacitors.

The servo motor control system with tachometric feedback continuously monitors rotational speed. As soon as the system detects the slightest speed deviation, the controller automatically adjusts its output to correct the error. This feedback loop ensures absolute speed stability, a key characteristic for faithful sound reproduction. The power supply automatically handles 33⅓ and 45 revolutions per minute.

Vibration isolation and finishing details

The solid aluminum feet feature specific geometry: their conical shape minimizes the contact area with the support. This design drastically limits the transfer of vibrations from the support furniture to the turntable. Some owners opt for Levis magnetic levitation feet, a recent upgrade that uses opposing magnets to float the turntable above its support.

The Orbe record clamp stands out with its screw-down system. Unlike simple weights, this system applies controlled force to the vinyl, effectively flattening warped or dished records. Progressive tightening eliminates resonances in the vinyl record, improving contact with the platter and thus the mechanical coupling required for optimal playback.

The turntable accepts a wide variety of arms thanks to its custom armboards. The standard pre-drilling suits Rega, Linn, and SME arms, but Michell offers specific armboards for virtually every arm on the market. The TecnoArm 2, Michell’s evolution of a modified Rega arm, is a natural match with its ultra-low-friction polymer bearings and 99.9999% pure silver wiring.

Technical Specifications

Suspension and Sub‑chassis

• Three-point suspension with fixed towers to adjust sub‑chassis height
• Weighted pendulum sub‑chassis: rigid and dense, absorbs vibrations and supports bearing, platter, and tonearm

Main Bearing

• Inverted oil-circulation bearing for full lubrication
• Reduces noise and vibrations

Platter

• Heavy, impedance-matched platter, materials similar to vinyl for sonic neutrality
• High mass for rotational stability and increased inertia

Motor and Power Supply

• Standalone motor, separated from the turntable, belt drive only
• Orbe Controller power supply with toroidal transformer and servo-controlled motor
• Precise, continuous speed regulation

Accessories and Isolation

• Screw-down Orbe record clamp to flatten records and reduce resonances
• Low-contact-area aluminum feet to limit vibrations

Dimensions and Weight

• Weight: 13.5 kg
• Width: 49 cm
• Depth: 37.5 cm
• Height: 15 cm

Highlights

• Same quality as the classic Orbe in a compact format
• Three-point suspension and weighted sub‑chassis
• Inverted, oil-lubricated bearing
• Heavy, impedance-matched platter for stability and inertia
• Standalone motor with Orbe Controller power supply for perfect speed
• Orbe record clamp and isolating feet to minimize vibrations

Standard Accessories

• Turntable supplied without tonearm or cartridge
• Pre-drilled for Rega / Linn / SME arms
• Dust cover and record puck included