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Precision Devices Case Studies |
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| Precision Devices Case Study – Aura Audio’s XD24 |
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 XD-series by Aura Audio is based on research for extremely controlled cone motion in the low frequency range. The final design features three independent loading segments; a proprietary horn loaded chamber forming a horn-bandpass-hybrid. What makes this design stand out, besides its performance, is the ability to scale the motor from 8" drivers all the way to the nowadays unfashionable 24" monsters.
The Flagship model XD24 is a wide band infra subwoofer that kneels to no one... ...and the driver had to be up to the challenge!
Knowing that there are not many professional driver manufacturers building 24" drivers these days Aura Audio R&D team turned to Precision Devices with the idea of building a neodymium version of the famous PD.2450. This awesome transducer is derived from the outstanding history and pedigree of PD’s audio innovation and is truly a masterpiece with fast transient ability and pure clean power.
We are proud to combine the most innovative enclosure design with unique state of the art driver technology. The absolute bass control including the lowest notes with very high efficiency finally shows the world what the PDN.2450 can do!
For more information please visit www.auraaudio.fi
EM Acoustics’ quake subwoofer
Precision Devices’ commitment to the utmost in drive unit technology is ideally demonstrated by the EM Acoustics Quake subwoofer – one of the most powerful single-driver subwoofers available today.
At the core of the sizable enclosure sits a massive PD drive unit, eighteen inches in diameter with a motor structure based around a five-inch voice coil and eleven-inch ceramic magnet. The performance of the Quake sub is then derived from an exponential/hyperbolic horn flare nearly nine feet in length – one of the longest commercially available for an 18” driver.
EM Acoustics’ Director of R&D Ed Kinsella explains “The Quake subs were originally designed for a client in Las Vegas, who gave us a very demanding design brief. Essentially he wanted the full works – flat response 35Hz to 200Hz, very high SPL, superior transient response and in the most compact package available. We realised a horn was the only way to go, and turned to PD for the ultimate in drive unit technology. What we’ve ended up with is an enclosure that stays flat to 35Hz even using only one sub (or 27Hz with four in a stack) thanks to the horn, but because of the superior motor strength of the PD driver and the careful design of the flare, we still get the transient response and a flat frequency response to over 200Hz.”
Quake subs have been providing “astonishing” low-end for events up and down the country over the past few months, such as the Tidy Weekender 5 in Wales and the recent Peter Andre UK tour. More information is available at www.emacoustics.co.uk or by contacting EM Acoustics on +44 (0) 1483 421200. |
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