DD Audio - True To The Source
Known colloquially as Digital Designs, DD Audio is a company that prefers not to over-complicate things. Put succinctly it's most happy pursuing it's goal of creating the finest audio products possible, dedicating itself to enhancing the performance of its already highly esteemed products no matter the lengths required. Established way back in 1986, DD Audio has designed and manufactured products for every facet of the audio industry. Whether it be mobile, marine, home, professional, industrial or OEM applications; you bring your problem and DD Audio will supply the solution.

A company that prides itself on being a genuine American design and manufacturing company, DD Audio continues to hand build the best subwoofers in the world at its Oklahoma City headquarters in the USA. No expense is spared when it creates its stellar products, with it employing only the highest quality components available to ensure maximum product performance and longevity.

9500 series - When Your Subsonic Needs Become Titanic
Amongst the most serious power tuned subwoofers are phenomenal 9500 series. Legendary drivers that're built to push performance limits to the next level. All 9500 series subwoofers feature additional mechanical and electrical damping to handle the rigors of crazy lows at high power, in extensive high output applications. This collection of subwoofers has been optimized for vented and multi-order enclosures, however they can sound terrific just about anywhere.

Design Ideologies
The 9500 series subwoofers represent the closest imaginable approximation to perfection in their class, and the new 9500L revision transcends even its own legendary status.

Relentless Scrutiny
In order to take the 9500 Series to a higher state DD Audio had to move beyond the point whereby refinements were mere upgrades. This mindset was conducive to DD Audio engineers completely redeveloping some facets of the design. Let’s look a little closer at some of them.

The Heatsink
The dual stage heat sink uses an internal aluminum tube insert to transfer heat away from the pole piece and voice coil and into the finned aluminum, back plate mounted heat sink. This process of conduction and convection lowers the working temperature to safer levels for the longest playing time possible at the highest level of efficiency possible.

The Surround
The second generation V-ROM surround is debuting on the 9500L revision, yielding the smoothest high excursion capability to date. The new design offers added height for DD Audio’s proven EROM surrounds and with it higher levels of excursion over maximum cone area. DD Audio engineered variable density ribs to expand and contract as the surround is forced in and out of sine waves, essentially eliminating hysteresis and its negative effect on linearity; thus ensuring the highest possible stability.

The Spider
Complementing the improved surround is DD Audio’s new USA made iron cloth spider system. These high roll spiders are capable of 30% more excursion. The new iron cloth spider system continues the tradition of multilayer pressing to meet the power tuned stiffness targets, but with the added benefits of higher strength threads weaving through the double or triple layer configurations. The result is substantially elevated performance and long term durability.

The Coil
The 9500 series’ voice coil is made in the USA and has evolved over generations to be the envy of DD Audio’s competitors. Among the five layers in these complex formers are Nomex and Polyamide which insulate the coil, protecting the glue joints between the spider and coil former. These synthetic layers are sandwiched by dual aluminum layers, which transfer heat away from the voice coil windings and acting as a heat sink. The wire and adhesives are manufactured to endure the most extreme high temperatures and the coil thermosetting occurs over twin baking and resin coating cycles. The double slit design helps to reduce distortion and inductance. In short this voice coil has matured to include the best known materials and techniques available to deliver matchless performance.

The Motor
The 9500 motor is a work of pure magnetic magic. DD Audio uses its own proprietary magnet tooling to maximize the surface area transfer from the low carbon back and top plates. The motor on the 9500 perfectly protects DD Audio’s reputation for having the tightest gaps in the industry, with minimal tolerances around the coil windings for increased gap flux. On custom orders DD Audio offers the option of SuperCharging the gap with neo to further increase flux by 30% or more. The motor also features DD Audio’s free flow cooling system, which the company engineered over twenty years ago. This system employs vents and cross vents running through the magnet gap, pole piece, top plates and back plates. The more excursion the speaker sees, the higher the airflow through the motor and around the coil. All motors use faraday shorting rings to reduce distortion and inductance.

The Cone
The 9500 series is made in the USA with as many indigenous components as can be reasonably acquired. Among those components is the USA made cone, engineered to be the lightest and stiffest pulp cone in existence. The key ingredient to its incredible strength to weight ratio is carbon fibre. Augmented by Kevlar and a myriad of synthetic and natural fibers, the cone is low density formed on non-press molds to increase the total cross section area, promoting a web of strengthening ribs across its backside. This high cross section area doubles the rigidity without increasing mass. The exotic fibers cost more and the cones take longer to form, but the result is audibly distinguishable; to hear the difference of the 9500 is to hear the difference of handmade USA build quality.

Design Features
The rich heritage of this astute company, together with its ever-increasing technical acumen; is conducive to these components featuring a vast array of impressive design ideologies and latest technological advancements.
– Aluminum twin stage motor heatsink.
– 230 mm diameter magnet.
– Multi vent free flow cooling motor.
– Shorting ring incorporated.
– 3.35″ high temperature voice coil.
– Excursion optimized ESP frame.
– VROM vario-density surround.
– Non-pressed composite reinforced pulp cone.
– 11″ dual / triple layer iron cloth spider.
– 9.4″ five layer composite spider.
– Laminated tinsel leads.
– Hand laid composite dust cap.
– Embossed protective magnet boot.
– Made in the USA.
– Optional upgrades available.

Electrical Specifications
– Nominal configuration: dual 2 Ohm 12″ subwoofer
– Continuous power handling: 2500 Watts
– Maximum power handling: 8000 Watts
– Voice coil diameter: 85.1 mm
– Frequency response: 20 Hz – 500 Hz
– Sensitivity: 84.9 dB
– DC resistance (Re): 1.9 Ohms
– Resonant frequency (Fs): 37.68 Hz
– Xmax: +/- 22 mm
– Compliance (Vas): 26.31 l
– Total Q (Qts): 0.662
– Mechanical Q (Qms): 6.901
– Electrical Q (Qes): 0.732

Physical Specifications
– Mounting diameter: 309.6 mm
– Mounting depth: 247.7 mm
– Weight: 31.8 kg

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.