Should a speaker be mounted directly onto a marble slab wall?

Generally no if the marble is bookmatched or a feature material — cutting into it disrupts the veining pattern. Mounting on adjacent panelling or wardrobe surfaces achieves the same acoustic coverage without touching the stone.

What finish works best next to brass hardware?

Bonsai's champagne aluminium finish is close enough to brushed brass to read as part of the same hardware family, rather than a mismatched fixture.

How much space does Bonsai need behind the mounting surface?

Bonsai requires just 12mm of depth, making it viable on wardrobe doors, panelling and other surfaces too thin for most architectural speakers.

Can Bonsai be positioned to avoid interrupting a room's main sightline?

Yes — because of its small size, Bonsai can be placed off the main sightline (for example on an adjacent wall or door) while still delivering effective coverage to the room.

What subwoofer pairs with Bonsai in a small dressing room?

The Acacia 6 Powered (200W RMS, 35Hz–300Hz) is commonly paired with Bonsai and can be sited in an adjacent space to save room volume.

How far apart can hardware finishes be before they look mismatched?

There's no fixed rule, but champagne and brushed brass sit close enough on the metal colour spectrum that most people register them as coordinated rather than mismatched, even at close inspection distance.

Case Study: Bonsai at a Bookmatched Marble Dressing Wall

Contents6 sections

XSCACE Bonsai speaker on a dark walnut wardrobe door beside a bookmatched marble slab wall

A dressing room finished with bookmatched black-and-white marble and brushed-brass hardware is designed so that the stone and metal do the visual work — anything else in the room needs to recede. This install placed Bonsai on the dark walnut veneer wardrobe doors adjacent to the marble slab, positioned so the sightline from the room's entry lands on the marble first, not the speaker.

Case Study at a Glance

Room: dressing room / bedroom wardrobe wall
Product: Bonsai (12mm slim-array)
Mounting surface: dark walnut veneer wardrobe doors
Finish: champagne aluminium, matched to brushed brass
Goal: sound beside a bookmatched marble slab wall without cutting into the stone

Reading brass hardware as a finish reference, not just decor

Treating existing hardware finishes as a colour reference for the speaker, rather than treating wood veneer as the primary reference, is a deliberate small choice that pays off at close viewing distance — most people notice a dressing room's door pulls and track hardware up close, at exactly the range they'd also notice a mismatched speaker finish. Matching to the brass rather than the walnut meant the speaker read as intentional rather than incidental.

Matching finish to material

Bonsai's champagne aluminium finish was selected to echo the brushed-brass door pulls and track hardware already specified for the wardrobe, rather than trying to match the walnut veneer directly — a small detail, but one that means the speaker reads as part of the hardware family instead of a separate fixture competing with the wood grain.

Why not mount on the marble itself

Bookmatched marble slabs are chosen specifically for the mirrored veining pattern across the join — cutting or drilling into that slab for a speaker cavity would permanently disrupt the one design element the room was built around. Mounting on the adjacent wardrobe panelling instead keeps the marble wall untouched while still delivering sound to the same space.

The system

An Air Amp drives the Bonsai directly, with an Acacia 6 Powered subwoofer sited outside the dressing room in an adjacent closet space to extend bass response without adding enclosure volume to a room already tightly planned around wardrobe storage.

Planned, controlled and calibrated for low-level listening

Every XSCACE installation follows the same three stages: planned in the simulator, controlled from the app that matches the hardware, and calibrated with measurement. A bedroom is used quietly, and quiet listening is unforgiving — at low level, timing and tonal balance are all that is left.

Planned

XSCACE Floorplan Sound Simulation takes a plan from trace to bill of quantities in the browser. For a room like this the outputs that matter are:

Coverage at the bed, the one position that matters

Placement checked against soft furnishing, which absorbs unevenly across frequency

Quantities and finishes agreed before joinery is cut

XSCACE Floorplan Sound Simulation showing the planner on a traced room plan

Trace, place, predict — before anything is ordered

Controlled

Day-to-day control is XSCACE Controller on iOS and Android. It handles volume, EQ and grouping, and the streaming amplifiers also appear natively as AirPlay 2 and Spotify Connect targets, so the app is for control rather than for getting audio into the room.

Calibrated

The calibration toolkit inside XSCACE Studio measures what the room actually does — eleven instruments covering SPL, delay, levels, polarity, frequency response, THD, sub alignment, transfer function, RT60, RTA and export, free on macOS. Here the ones that earn their place are:

Levels matched channel to channel, so the image sits where it should

RT60 to ISO 3382 — soft rooms measure very differently from the rest of a house

Frequency response, because tonal balance is what carries at low volume

XSCACE Studio calibration toolkit — Frequency Response

Bonsai runs down to 300Hz and Acacia 6 Powered reaches 35Hz, meeting at the 300Hz crossover both records specify — a number to verify by measurement rather than assume.