Reflector/Audio

Reflector Audio — Riga, Latvia

Monitoring
without
a baffle.

A cabinet colours everything that leaves it. Square Two removes the baffle from the equation — four low-frequency drivers vent around a central coaxial horn, so the enclosure radiates as a single point source rather than a box with drivers in it.

40 Hz – 26 kHz
Bandwidth
112 dB
Max useful level
< 0.5 dB
Pair matching
320 mm
Enclosure, cubed
01 / Acoustic design

One source,
not two.

The central mid/high horn is surrounded by four low-frequency drivers, each venting through its own opening. Acoustic centres align. The result behaves as one source across the crossover region instead of two sources arguing about where the image sits.

There is no flat front panel for sound to diffract from, and no cabinet volume large enough to store and re-release energy. What you hear is closer to what was recorded.

1 2 3 SECTION A–A · 1 COMPRESSION DRIVER · 2 HORN FLARE · 3 LF VENT
Fig. 1 — Vertical centreline section
02 / Measured

Flat is not a claim.
It is a measurement.

−3 dB 203050 100200500 1k2k5k 10k20k +60−6 −12−18 ON-AXIS RESPONSE · dB re. 1 m · HZ
Fig. 2 — Free-field on-axis response
03 / Reference

Q1818

Four 18-inch drivers
and no baffle at all.

An impulse-corrected open-baffle reference system. Four 18-inch drivers and a compression driver in a baffleless coaxial array, with additional 18-inch subs. Approximately 10 kW of passively cooled Class D. Figure-of-eight radiation.

Tuned in-room, per control room. No two installations are identical, so no two are delivered the same.

Built in Riga.
Tuned in your room.

01 / SQT

Square
Two

A coaxial point source in a 320 mm cube. Powered, two-way, and pair-matched to within half a decibel before it leaves Riga.

01 / Specification
ConfigurationPowered two-way, coaxial horn, bass-reflex
Low frequency4 × 5 in Eighteen Sound, bandpass chambers
High frequency1.4 in FaitalPRO compression driver
Crossover1 kHz — phase-linear IIR, no FIR
Frequency range40 Hz – 26 kHz (−6 dB)
Max useful level112 dB (3% THD) · 118 dB peak
Directivity64° (−6 dB, 1–10 kHz), horizontal = vertical
AmplificationHypex Ncore 2 × 125 W + 100 W, Sigma DSP
Pair matching0.35 dB
Enclosure320 × 345 × 325 mm · 19.4 kg
Bass extensionOptional three-way system — to 16 Hz, < 5 ms latency
02 / Drawings
320.0 320.0 SQT-F · FRONT ELEVATION · MM
Fig. 3 — Front elevation
FRONT REAR SQT-S · SIDE, AMPLIFIER BAY · MM
Fig. 4 — Side, hidden detail
60°90° 120°180°120° 90°60° −6−12 — 1 kHz — 10 kHz
Fig. 5 — Horizontal directivity
A pair of Square Two monitors on stands in an anechoic chamber
Fig. 7 — Measurement session, anechoic chamber. Photograph Anselm Goertz, published with the Sound&Recording review, June 2023.
Measured frequency response of the Square Two: low- and high-frequency paths crossing at 1 kHz
Fig. 8 — Measured frequency response, LF and HF paths crossing at 1 kHz. Anselm Goertz, Sound&Recording, June 2023.
03 / Order

Configure
a pair.

Horn finish

Square Two · per pair

€ 5,990

INDICATIVE — CONFIGURED AT ORDER

  • Delivered as a matched pair with measurement sheets
  • Lead time 6–8 weeks from Riga
  • SQB bass system can be added later — no trade-in required
Request a demo

Each pair is matched to within half a decibel before it leaves.

02 / Q1818

The
reference
system.

An impulse-corrected open-baffle array for recording, mixing and mastering rooms. Four 18-inch drivers, a compression driver, and no cabinet between you and the work.

01 / Specification
ConfigurationOpen-baffle reference, impulse-corrected
Array4 × 18 in + compression driver, coaxial
Low frequencyAdditional 18 in subsystems, per room
Amplification≈ 10 kW Class D, passively cooled
RadiationFigure-of-eight
CalibrationTuned in-room, per control room
AvailabilityMade to order
02 / Radiation

The room hears
less of itself.

A dipole radiates forward and backward, and almost nothing to the sides. Side-wall reflections — the ones that smear imaging in most control rooms — barely exist. What reaches you is the array, and the array is corrected in time.

The nulls at 90° are not a by-product. They are the point.

180° NULLNULL — FORWARD LOBE — REAR LOBE
Fig. 6 — Figure-of-eight radiation
03 / Commissioning

Not shipped.
Commissioned.

01

Consultation

Room drawings, monitoring history, what the room is for. We decide together whether Q1818 is the right answer.

02

Measurement

The room is measured before anything is built. The array is dimensioned against the space it will work in.

03

Build

Drivers are matched and the array is assembled in Riga. Every element is measured on its way in.

04

Tuning

The system is voiced in your room, by us, against the measurements. It is finished where it will be used.

No two rooms are identical, so no two systems are delivered the same.

03 / Method

Five decisions against the cabinet.

None of them are voicing choices. Each one removes a mechanism that was adding something the recording did not contain.

01

Baffle-free radiation

A baffle creates edge diffraction and a cabinet signature. Remove it and you remove both — there is no flat front for a wave to run off the edge of.

NO EDGE · NO DIFFRACTION
02

Horn loading

Controlled directivity and high sensitivity, so the driver works in a smaller and more linear part of its available excursion.

THROAT → MOUTH
03

Coaxial arrangement

One acoustic origin instead of two. The image holds together as you move, rather than collapsing the moment you leave the sweet spot.

SINGLE ORIGIN
04

Impulse correction

Time-domain accuracy is corrected as a design target, not treated as a by-product of getting the frequency response flat.

CORRECTED · UNCORRECTED
05

Point-source behaviour

What arrives at the listening position is a single coherent wavefront, not the sum of several sources arriving at slightly different times.

SOURCE → LISTENING POSITION

We are not voicing a loudspeaker. We are trying to hand back the recording with its temporal and spatial information intact.

04 / Company

Instrument makers, not a factory.

Reflector Audio designs, builds and measures its loudspeakers in Riga. The team is small on purpose — every pair that leaves has been listened to by the people who made it.

01 / Milestones
2009

The first baffle-free prototype is built and measured. The idea holds.

SIA

Reflector Audio Design, SIA — the company forms around the prototype, in Riga.

NAMM 2020

Q1818 is shown in Anaheim. The reference system leaves the lab.

Patent

United States patent on the loudspeaker structural technology.

02 / Places
Riga
56.9489° N · 24.1052° E
  • Research
  • Manufacturing
  • Measurement · QC
New York
40.7128° N · 74.0060° W
  • Brand
  • Demonstrations
Los Angeles
34.0522° N · 118.2437° W
  • Brand
  • Demonstrations
03 / Method

Measured on the way in.
Listened to on the way out.

Drivers are matched before assembly. Finished pairs are measured against each other and against the reference curve, then auditioned. The measurement sheets travel in the crate — the numbers belong to the owner, not to marketing.

A small team.
One pair at a time.

05 / Contact

Talk to the people who build it.

Listening rooms in Riga, New York and Los Angeles, by appointment. Tell us about your room — we answer within two working days.

RECEIVED · REF RA-000000

Thank you.

We answer within two working days. If it is urgent, say so in a second message and we will move faster.

Riga
56.9489° N · 24.1052° E
  • Factory listening room
  • In-room tuning departs here
New York
40.7128° N · 74.0060° W
  • Demonstrations by appointment
Los Angeles
34.0522° N · 118.2437° W
  • Demonstrations by appointment

listen@reflectoraudio.com

Reflector/Audio

Professional monitoring
systems, built in Riga.

Index

Overview Square Two Q1818 Technology Company Contact

Places

Riga
New York
Los Angeles

Reflector Audio Design, SIA

Design prototype
Not for distribution
© 2026