3D Spatial Sound / Surround Effect Speaker Bang & Olufsen Rear – 4K8035710

Original surround / 3D rear spatial effect speaker (mid-range spatial effect transducer in the D-pillar / roof lining / rear shelf – right side), designed for Audi A7 Sportback, S7 and RS7 (4K / 4K8 generation) models produced from 2018 to 2026, equipped with the factory premium sound system Bang & Olufsen Premium Sound System with 3D sound (PR code: 9VS) or Bang & Olufsen Advanced Sound System with 3D sound (PR code: 8RF), based on the modular longitudinal MLBevo platform.

Factory VAG sound system component, developed in collaboration with Danish acoustics leader Bang & Olufsen. Responsible for the precise reproduction of the rear effect channels and the high/mid registers of the 3D Sound stage in the Sportback body. The transducer features a factory-matched impedance for the multi-channel DSP sound processor of the B&O amplifier, a durable diaphragm on a rubber suspension, and a vibration-resistant mounting basket. It guarantees perfect band harmony without distortion or resonance at high volume levels.

Technical specifications:

• Catalog part number (OE): 4K8035710 / 4K8 035 710 (interchangeable with revisions in the 4K8035710A, 4K8035710B series); the left-side speaker is available under number 4K8035709

• System / Category: Multimedia and sound system / Surround speakers (Rear Surround / 3D Effect Loudspeaker Bang & Olufsen Right)

• Audio system: Bang & Olufsen (B&O 3D Sound System) – PR equipment codes: 9VS, 8RF

• Function: Rear spatial effect speaker (Surround / 3D channel, right side)

• Installation side: Rear of the vehicle – roof lining / rear pillar / trunk shelf area (right side – passenger side, Sportback body)

• Dedicated model: Audi A7 Sportback / S7 / RS7 (body type 4K8)

• Steering wheel side: Left (LHD) and Right (RHD) – universal component

• Construction: Rigid basket made of resonance-dampening plastic, integrated screw mounting points, 2-pin sealed factory VAG connector

• Condition: Original part, used (100% functional – tested with an amplifier on a frequency generator, plays clearly without crackling, distortion, or resonance; diaphragm and suspension are in undamaged condition; all mounting tabs are intact)

• Manufacturer: Audi AG / Bang & Olufsen / PSS (OEM Original)

Main application:

• Audi:

  • A7 Sportback (type 4K8) – model years 2018 to 2026 (with Bang & Olufsen sound system PR-9VS / PR-8RF)

  • S7 Sportback (type 4K8) – model years 2019 to 2026 (with Bang & Olufsen sound system)

  • RS7 Sportback (type 4K8) – model years 2019 to 2026 (with Bang & Olufsen sound system)

Fitment guarantee and VIN verification

Each transducer undergoes coil resistance measurement with an ohmmeter and an acoustic band listening test before shipping.

Fitment / installation note: The initial designation 4K8 (group 035) with number 710 is the right side of the surround effect speaker system, matched to the contoured rear section of the Audi A7 Sportback body. Using the original OEM Bang & Olufsen speaker eliminates the risk of open-circuit or short-circuit errors in the amplifier control unit (module 47 - Sound System) and guarantees proper phase alignment of the spatial sound. Installation is done using the factory Plug&Play points. Before purchase, we recommend comparing the OE number on the part's magnetic label or verifying it using the vehicle's VIN.