Unity Audio The Boulder Mk-III DSP (Pair)

Powerful 3-way active studio monitor with a brand new 220mm (8.5”) crystal membrane woofer, new hybrid amplification and DSP controls


The Unity Audio Boulder Mk-III DSP is a critically-acclaimed 3-way active studio monitor with brand new 220mm (8.5″) crystal membrane woofer, new hybrid amplification system and DSP.

The Unity Boulder Mk-III boasts a crystal membrane made with an inverse aluminium dome joined to a paper cone using a special gelling process to design the necessary sandwich construction. The aluminium dome is then stiffened with the crystal shape to reduce undesirable resonances and colouration. The result is a tighter low-end with increased power handling and dynamics.

The Unity Audio Boulder Mk-III uses a new hybrid Class D and Class A/B amplification architecture with the former powering both woofers and the latter powers the coaxial-midrange and ribbon tweeter. This new architecture delivers more power while retaining the life-like qualities and superior dynamics that made the Boulder such a studio staple.

A new DSP system replaces the traditional analogue input crossover, offering 24bit/96kHz high-quality operation, ultra-precise 1/10th dB level control on both input and output channels, mute, phase, delay and 8-bands of fully parametric EQ as well as a limiter for protecting the speakers. The DSP is powered via a Mac and PC compatible software and the speaker connects via Ethernet.

In addition to the DSP connections the Boulder Mk-III DSP includes Analogue input and output over XLR to feed either a subwoofer or the Boulder Active Bass Extender (B.A.B.E)

Like the rest of the range, the Boulder Mk-III DSP uses a sealed cabinet, preferred for its accurate bass response, superior transient response and its gradual 12dB per octave roll-off. It is made with 18mm baltic birch plywood with a 30mm Corian front baffle for added density, mass and rigidity to remove any cabinet resonance. Large radius edges are also employed to reduce reflection contributing to the unmistakable quality of this speaker.

This- 3-way active speaker is ideal for near-field and mid-field application, but can be augmented by Unity’s own B.A.B.E or two Avalanche subwoofers for full-range or mult-channel systems in mastering and post-production facilities.

Unity Audio Boulder Mk-III Main Features:

3-way active monitor
Closed cabinet design
30mm Corian front baffle
Coaxial 5” midrange and 50kHz folded ribbon tweeter
Two 8.5″ / 220mm Crystal Membrane Woofer
2x 180 watt Class D amplifiers and 1 Class A/B Midrange/tweeter amplifier
96kHz/24 bit DSP input/crossover
2 x New 8.5″ / 220mm Crystal Membrane Woofers.
2 x New 300 watt Class D amplifiers inc dedicated PSU for woofers.
Balanced XLR input
18mm grey Baltic birch 9 ply plywood cabinet
Brutally honest and vibey
HF EQ Shelf @ 10kHz +/- 2.5dB
Mid Cut/Boost +/- 2.5dB
Frequency response 40Hz-30kHz +/- 1dB
Frequency response 33Hz-38kHz +/- 3dB
Sealed Baltic Birch 12mm (.5”) Plywood Cabinet
Corian 18mm Front Baffle Design
Balanced XLR Input
Balanced XLR Output
368mm deep x 256 mm wide x 549mm high
23Kg each


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