Unity Audio Boulder MK III Active Monitors (Pair)
Crystal Membrane 8.5″ / 220mm Woofers
The Crystal Membrane woofer construction uses Aluminum-Sandwich AS Technology. The crystal-shaped inverse aluminium dome is joined to the paper cone in a special gluing process to result in the desired sandwich construction. The wide, double-asymmetrical rubber surround of the 220m woofer can handle up to ±20 mm excursions for truly prodigious volume and lowest distortion, a unique engineering achievement for a driver of its size.
Amplification
The new MK-III is now fitted with 2 x 300 watt Class D amplifiers with their own separate power supply specifically for the 2 x Crystal Membrane woofers. The Boulder MK-III still retains it’s two original discrete custom Class A/B amplifiers with their own dedicated power supply for the Coaxial X-Jet mid-range / ribbon tweeter.
X-JET Coaxialk Mid-Range & Folded Ribbon Tweeter Drive Unit
The Coaxial unit which is hand built in Germany comprises of a 5″ ring mid-range drive unit and a centrally mounted JET5 50 kHz folded ribbon tweeter. The combination provides a reduced stray magnetic field with higher efficiency, improved dynamics and smooth, even frequency dispersion. It’s entire frequency spectrum from 694 Hz to 50 kHz, eliminating phase rotation and frequency anomalies.
Jet 5 Folded Ribbon Tweeter
The Jet 5 uses a unique folded ribbon technology providing a wide, smooth dispersion and a flat frequency response exceeding 50kHz. Delivering true high-definition sound, the JET 5 tweeter enthrals with its lightning-fast response and wide dynamic range, offering minimal distortion, lots of headroom and a distinctly wider frequency range than conventional dome tweeters. The ELAC JET tweeter is one of the most legendary tweeters in the industry and has won international praise with its transparent and effortless sound image.
Specifications
- 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
- 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