Unity Audio Boulder
The Boulder is Unity Audio's new 3-way active monitor, due to be available at the end of May.
The Boulder shares some of the same interesting material and designs of The Rock, such as a Baltic Birch plywood cabinet instead of commonly used MDF, but this time 18mm instead of 12mm as used in The Rock. The cabinet dimensions are 368mm deep x 256 mm wide x 549mm high.
The front baffle is manufactured from Corian, like The Rock, and bonded to an internal wooden baffle, but the Boulder uses a 30mm slab of Corian instead of The Rock's 12mm and with large radius edges and scalloped sections either side of the coaxial mid/tweeter unit to reduce reflections.
The Boulder's 2x180mm (7'' ) woofers are employed for bass reproduction, and they are the same woofer model as used in The Rock, the crossover point being 454Hz. This is designed to increase low frequency extension and achieve higher SPL's, according to the company. Each woofer has a 0.2mm aluminium foil chemically bonded to a rigid pulp fibre cone. This is designed to reduce harmonic anomalies and permit +/- 15mm of woofer travel. The use of Aluminium bound to a pulp fibre cone is designed to ensure that the woofer cone will remain symmetrical at all frequencies.
A new dual coaxial Midrange/Tweeter is employed. This new unit is a combination of a 5” midrange ring radiator and a concentrically arranged folded ribbon tweeter.
The Boulder uses the same custom designed Tim de Paravacini Esoteric Audio Research Class A/B amplifier modules from The Rock, but a total of four amplifier modules are used, one for each drive unit. A high frequency shelving EQ with a +/-2.5dB control, and mid band cut/boost control as well as an overall level control with also be accessible on the rear amplifier panel.
Pricing & Availability
Estimated price £5,000 inc VAT a pair. Available May/June.
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