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Ex Machina Quasar MKII Dual 8" Coaxial 3 Way Monitor Pair  From Ex Machina

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Ex Machina


"Experience the Difference"

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Manufacturer's Description from Ex Machina

The penultimate studio monitor in our range, Quasar provides the same flawless imaging, time coherence, detail, and accuracy of its smaller sibling Pulsar, just with even more output and extension from its second subwoofer. The axisymmetric “sub-coax-sub” arrangement also provides an even more coherent hemispherical wavefront, for superior integration at all frequencies, and at any distance or angle within the 90×90 conical coverage.


Custom SEAS Extreme Series Subwoofers

Low distortion, long stroke design and rigid aluminum diaphragms provide immense bass precision and reach.


Coaxial Midrange/Tweeter

  • Bleeding edge Composite Sound Metamodal TeXtreme diaphragms: ultralight, ultra-stiff carbon fabrics with optimized fiber geometries to actively control and suppress resonances.
  • Mathematically optimal midrange waveguide shape, underhung surround, and optimized point source acoustic center alignment provides superb off-axis response.
  • State of the art, super low distortion neodymium motor design.



  • Flagship AKM Velvet Sound AK4493/AK5572 based conversion leaves no sonic footprint.
  • Hypex Ncore amplifiers provide gobs of squeaky clean, efficient power.
  • 5th gen SHARC+ DSP hardware can crunch many, many numbers at once.


Sealed Valchromat Cabinets

Stiff, dense and well damped, with none of the chuffing or group delay of ported designs.



Proprietary, in house calibration code completely flattens frequency, phase and impulse response.


Ex Machina

About Manufacturer

Ex Machina Soundworks began as a rebellion against the status quo in audio. Tired of the tacit, creeping compromises we all take for granted as the cost of making music, we set out to create something different entirely. Something paradigm changing. Combining a true diversity of backgrounds, perspectives and expertise, from artificial intelligence and DSP, to circuit design, to acoustical and materials science, to 30+ years of recording and music making experience, we set out to push the envelope of what is scientifically possible in loudspeaker design. All with one goal in mind: shorten the gap between you and your art. Make your moves clearer, your process faster, the details obvious, your window vast. So you can have no doubts in the choices you make.


Linear Frequency Response: +/- 1db 29hz – 30khz (measured at 30cm cal position)
Low Frequency Cutoff: -6db at 24hz
Linear Phase Response: +/- 15° 20hz – 30khz
Maximum Continuous SPL @ 1m: 114db, 109db @50hz
THD+N (94db @ cal position): < .5% Power Average 100hz – 30khz
Coverage Angle: 90° conical



176mm (7”) midrange, 25mm (1”) tweeter Custom SEAS/Ex Machina/Composite Sound Metamodal TX™ mid/high coaxial

Twin 221mm (9”) Custom Aluminum SEAS Extreme Series Architecture Subwoofers



200hz Sub/Mid, digital 8th order, phase corrected

2khz Mid/Tweet, digital 8th order, phase corrected



Subwoofers: Hypex NC252MP – 500W RMS

Midrange: Hypex NC252MP – 100W RMS, voltage limited

Tweeter: Hypex NC252MP – 75W RMS, voltage limited




A/D Chipsets: AKM AK5572EN

D/A Chipsets: AKM AK4493EQ

DSP: 5th Gen SHARC+ AD21565



2vrms to full scale



741mm H x 289mm W x 345mm D (29.2″ x 11.3″ x 13.6″)

35kg (77lbs)