One Audio - Reconceptualising Extreme Audio
When it comes to car audio equipment there are enthusiasts, there are audiophiles and then there's Mr Scott Atwell. His passion for audio was kindled nearly forty years ago, thenceforth resulting in the creation of his company One Audio. Hailing from the USA, One Audio is a company focused purely on aural passion and hence synonymous with top-notch build quality and indelible technical expertise. Put succinctly, there's little Scott doesn't know when it comes to the art of producing audiophile grade audio equipment. Starting from humble beginnings designing products for use within his own home and car, during his tenure people quickly noticed just how good the products from this astute little company were. Today the company remains modestly sized despite its products being in extremely high demand. Ergo if you want to up your game with some serious calibre audio equipment; One Audio is one company that ought to be top of your short list.

IB3 Series - The Amalgamation Of Accuracy And Realism
Not everyone boasting a high-end subwoofer wants to bother the entire neighbourhood with it. On the contrary there's an echelon of discerning audiophiles who desire supreme sound quality above all else, caring little for entertaining those outside the vehicle. They seek elements like articulated infrasonics, linear subsonics and tightly controlled lower midbass registers from their subwoofer. Entertaining others isn't an interest, and budgets are of a lesser concern. This is the territory of the delightful IB3 range from One Audio. Developed by Scott Atwell in the USA with every detail scrutinised to perfection; the IB3 drivers are capable of aural achievements until now though nigh-on impossible.

Design Ideologies
One Audio’s latest variant of its superb IB3 subwoofer incorporates design principles and technologies derived from the award-winning IBn3 neodymium platform. However in this latest design are numerous engineering revisions focused on improving linearity, transient accuracy and low-frequency extension while retaining substantial power handling capability.

Motor Control
Particular attention has been given to controlling motor inductance and maintaining a stable electrical response throughout the driver’s operating range. Three thick aluminium shorting rings together with an upper pole cap provide effective inductance mitigation and motor linearisation, helping reduce impedance modulation and maintain a more consistent response at higher excursion levels. The new 3″ / 76.2 mm four-layer aluminium voice coil delivers a staggering 36 mm of Xmax, while the larger 10″ / 254 mm spider increases suspension control and mechanical linearity. This supports the drivers incredible 4″ / 101.6 mm of peak-to-peak mechanical excursion.

Bulletproof Methodologies
Electrical and mechanical losses have also been addressed throughout the design. Kevlar stitching, double-opposed tinsel leads, oversized push terminals and One Audio’s proprietary terminal-block arrangement are engineered to minimise transmission losses between the input terminals and voice coil. The revised rear-open motor topology improves airflow around the motor assembly, reducing turbulence-related noise while promoting heat transfer from the motor and voice coil into the substantial aluminium outer heat sink. A flow-optimised rear exit further assists thermal management under sustained high-power operation.

Optimsed Design
The robust six spoke aluminium frame provides the required structural rigidity while accommodating the in-house-machined custom FEA-optimised motor structure, allowing the magnetic circuit and suspension geometry to work together with greater mechanical consistency.

Cones Versus Cones
For installations where maximum sound-quality performance and reduced moving mass are priorities, the IB3 can also be specified with a lightweight Rohacell-cored carbon fibre cone. This construction reduces moving mass while increasing cone stiffness, helping suppress unwanted flexing and maintain more controlled piston behaviour as excursion increases.

Applications
The IB3 is engineered around the fundamental requirements of a high-output infinite-baffle driver. These include low inductance, high linear excursion, rigid construction, effective thermal management and controlled mechanical behaviour. The result is a subwoofer capable of reproducing everything from the low-level harmonic structure and transient detail of acoustic instruments to the extreme bottom-octave energy demanded by modern music and cinema soundtracks.

Design Features
The rich heritage of this astute and masterful designer, together with its ever-increasing technical acumen; is conducive to these components featuring a vast array of impressive design ideologies and latest technological advancements. Some of these include:
– Available in single 2 Ohm, single 4 Ohm, dual 1 Ohm or dual 2 Ohm configuration.
– Cast six spoke high strength frame.
– Wrap around gasket.
– Aluminum pole sleeve.
– Heavy outer aluminum ring.
– Upper pole aluminum cap.
– Upper pole inner aluminum ring extension.
– Kraft pulp fiber reinforced diaphragm, with optional Rohacell cored carbon fibre diaphragm.
– Multi-layer wide foam surround.
– Carbon fiber dust cap.
– Massive push terminals.
– Extra heavy lead wire.
– FEA optimised motor.
– 3″ / 76.2 mm diameter coil.
– 36 mm Xmax ability.
– 1125 Watts power handling at 20 Hz linear limit.
– Single high grade magnet.
– 10″ / 101.6 mm progressive spider.
– Open flow low noise motor design.

Electrical Specifications
– Nominal configuration: single 4 Ohm 12″ subwoofer
– Continuous power handling: 1125 Watts
– Maximum power handling: 2250 Watts
– Voice coil diameter: 76.2 mm
– Frequency response: 15 Hz – 1000 Hz
– Sensitivity: 82.31 dB
– DC resistance (Re): 3.99 Ohms
– Resonant frequency (Fs): 25.3 Hz
– Xmax: +/- 36 mm
– Compliance (Vas): 40.9 l
– Total Q (Qts): 0.68
– Mechanical Q (Qms): 4.87
– Electrical Q (Qes): 0.79

Physical Specifications
– Mounting diameter: 282.6 mm
– Mounting depth: 231.8 mm
– Weight: 6.4 kg

Documentation
– Technical sheet

Important Disclaimers
Given the dynamic nature of electronics industries these days; below are listed some very important specifics you need to be aware of.

Brand Authorization And Stock Sourcing
We are a fully authorised Australian dealer of this brand and all stock is sourced through legitimate channels. It therefore enjoys full Australian warranty, backing and support.

Pricing Structure
Whilst we endeavor to offer the best price possible, we ask that if you do find a better price elsewhere from an authorised dealer; please contact us. Also be aware that we regularly conduct group buys and sales, therefore pricing can sometimes be subject to change without notice.

Stock Structure
Being a dynamic store is conducive to our inventory constantly changing. We list only a small portion of our stable online, usually products most popular. Aside from these we also stock numerous other variants and configurations of these products, hence if you don’t see what you’re after please contact us.

Shipping
All our products are shipped with registered and insured postage. Upon ordering you’ll be issued with a receipt, a consignment note via which you can track your order, and we’ll also SMS you photos of the package for identification purposes.

Technical support
This last one we cannot emphasise enough! Please contact us if you require any further information or assistance with the setup and use of this product, especially pertaining to aspects more technical. As we want you to get the very best from this product.