Equipment file · 3D beam-forming and wave-field-synthesis matrix array

Matrix Array

HOLOPLOT · X1 launched May 2021

Evidence status · verified

Claims in this file are tied to item-specific sources.

A many-driver platform using digital control to form and steer sound beams.

Introduced
X1 launched May 2021
Category
3D beam-forming and wave-field-synthesis matrix array
Intended use
Large venues, concerts, installations, and controlled audio zones
Production
2021 onward

Equipment photographs · 2

Holoplot X1 Modul 96 (MD96) official technical drawing

1 / 2 · Holoplot X1 Modul 96 (MD96) — manufacturer technical drawing

Holoplot X1 Modul 96 (MD96) — manufacturer technical drawing·HOLOPLOT GmbH·© HOLOPLOT GmbH; used for identification and historical commentary

Why it mattered

  1. 01

    Applied independent amplification and processing across a dense two-dimensional driver matrix.

  2. 02

    Combined 3D beam forming with wave field synthesis at unprecedented large-venue scale.

Engineering record

Driver control
An X1 Modul 96 contains as many as 96 individually amplified drivers, including 80 high-frequency units.[3]
Sphere scale and differing counts
HOLOPLOT's case study reports 1,578 X1 modules across the venue and behind its LED surface. Sound on Sound's January 2024 production account separately reports 1,534 fixed and 300 mobile modules (Modul 96 and Modul 80-S), with 167,000 drivers. These are differing source-specific counts, not interchangeable cabinet and driver totals.[4][1]

Original pricing

No public retail price located

2026 equivalent

Not calculated without a reliable original price.

X1 systems are engineered and quoted per project.

Use in the field

Early public applications included DARK MATTER in Berlin. Sphere opened with U2 in September 2023, using X1 behind the LED surface for concert coverage and selected spatial effects.[5][4][1]

U2's production prioritised clarity and musical contrast over continuous surround effects. The Eagles' engineer Tom Evans later described using an SSL Live L550 Plus and 64 aux sends for 42 speaker zones, automated song by song: a console-and-routing workflow rather than a claim that every concert used one object-rendering method.[1][2]

Professional reactions

Release-period reaction · January 2024

The Edge valued the clarity that allowed very quiet passages to carry, creating a contrast between loud and soft that could be lost in stadiums. He stressed emotional connection and avoided letting the available spatial effects become gimmickry.

The Edge, U2 guitaristOpening U2:UV residency at Sphere; direct Sound on Sound interview shortly after the venue opened. · Independent firsthand source · Paraphrased account[6]Sound on Sound · Sphere sound: creating U2:UV

Release-period reaction · January 2024

O'Herlihy regarded the system as the sort of development concert audio had awaited for a long time. His excitement centred on sonic quality and giving the audience a better listening perspective, not simply on the number of loudspeakers.

Joe O’Herlihy, U2 front-of-house engineerSphere opening residency; interview reflects this installation's debut, not the X1 product's original 2021 launch. · Independent firsthand source · Paraphrased account[6]Sound on Sound · Sphere sound: creating U2:UV

Later field experience · 5 November 2025

Evans rebuilt the Eagles' mixes for Sphere, routing 64 console aux sends to 42 zones in front of, behind and above the audience. Song-by-song automation let an input move between locations while the band's familiar recorded sound remained the priority.

Tom Evans, Eagles front-of-house engineerEagles residency; SSL-published engineer interview, later field experience rather than launch testimony. · Manufacturer-published case study · Paraphrased account[7]Solid State Logic · SSL Live at the core of the Eagles' immersive audio at Sphere

Manuals & original documents

Sources

  1. 1Sphere sound: creating U2:UVSound on Sound · interview · January 2024
  2. 2SSL Live at the core of the Eagles' immersive audio at SphereSolid State Logic · case study · 5 November 2025
  3. 3HOLOPLOT X1 Modul matrix arrayMix · reference
  4. 4Sphere case studyHOLOPLOT · case study
  5. 5HOLOPLOT immersive X1 Matrix ArrayFOH Magazine · reference
  6. 6Sphere sound: creating U2:UVSound on Sound · interview · January 2024
  7. 7SSL Live at the core of the Eagles' immersive audio at SphereSolid State Logic · case study · 5 November 2025

Contribute to the record

Know more about Matrix Array?

Corrections, firsthand information, original documents, and credited photograph sources are welcome.

Your email is private and will not appear in the archive. Contributions are not published automatically.

Help build the archive

A missing piece? A correction?

Contribute to Resonant

Support the archive

Resonant is built one verified record at a time: research hours, archival image rights, and the hosting that keeps every era, equipment file, and citation free to read. If this archive is useful to you, a donation of any size keeps the next entry moving.

How donations are used

Payments go directly to the archive’s editor through Venmo and Cash App. Resonant is an independent project rather than a registered charity, so donations are not tax-deductible and nothing is sold or subscribed to in return.