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.

Z4 Series - The Unicorns Of Extreme Subwoofers
DD Audio launched the first iteration of the Z motor design in early 2005, a design that forever changed the way people thought of a high-performance subwoofers as they pushed the limits of car audio to new extremes. Over the years many versions of Z4 series have been produced and this spirit of experimentation has driven DD Audio to constantly improve and innovate the design, striving towards perfection. This range rightfully takes its place as some of the most dominant competition subwoofers of all time; despite it not initially being designed for competition. The motivation behind the Z4 series was simply to build the best sounding high power handling driver of all time. A mission DD Audio now considers accomplished.

Design Ideologies
The Z4 series are the result of our ongoing study in the field of world subwoofer domination. The Z4 project represents the culmination of DD Audio’s ultimate engineering goal which is to push the limits of delivered energy by utilising high-performance composite technologies. The Z4 series takes its place as one of the flagships of the DD Audio subwoofer stable by having the highest motor strength, greatest voice coil cooling capability, most overbuilt design features and last but not least; true to the source sound reproduction.

There have been a couple of different iterations of the Z4 over the years, and due to the limited number of pieces that have been produced it has gained an almost mythical status in the subwoofer world. In its current form the Z4 is a grade 52 neodymium open motor design. By increasing the surface area of the voice coil, the size of the magnetic gap and its heat dissipating abilities; the Z4 is able to be driven just as hard as the Z3 but with increased long-term high power handling. The USA steel and aluminum motor parts are machined and finished in DD Audio’s hometown of Oklahoma, with all the moving parts being USA made from the finest materials and manufacturing methods available. These parts are then assembled and quality controlled in-house in DD Audio’s facility. The motors are adorned with CNC engraved Z artwork. All steel motor parts use black zinc coating that provides excellent corrosion and heat resistance while minimizing coating thickness and maximizing energy transfer between motor parts. This plating provides excellent corrosion and heat resistance while minimizing coating thickness and maximizing energy transfer between motor parts. To further compliment the Z4;s striking motor cosmetics the aluminum quick-change top plate, and shorting ring both feature red anodized accents.

What Specifications
You’ll notice the standard TS parameters are missing for the Z4 subs. This omission is on purpose because each Z4 is custom built to order allowing for a multitude of possible parameter sets making one static set of specs very prone to inaccuracy. The one listed here is simply from one an affiliated store in the USA ordered. The reason DD Audio builds the Z4 to order is that it gives a system designer the utmost freedom to design for their specific application.

Upgrade Abilities
The Z4 series subs also feature DD Audio’s evolution subwoofer package (ESP). ESP equipped drivers sport larger diameter suspensions and deeper frames than standard subs and exclusive surround and cone designs. ESP subs are truly built to maximize performance in their designated size class. The Z4 Series comes standard with an oversized dry finish black composite dust cap, red logo and treated pulp cone. However all these can be optioned out with custom suspension configurations, alternative composite dust caps, composite cones, powder-coated frames and a multitude of logo options to give your sub a personalized look and / or added performance for a specific application.

Z-Future
DD Audio will continue down the path of global transducer domination via these; the sledgehammers of the subwoofer world.

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.
– Constructed in-house in Oklahoma.
– Tight tolerance CNC machined components.
– Grade 52 neodymium open motor design.
– Adorned with CNC engraved Z artwork.
– Excellent corrosion and heat resistance.
– Maximum energy transfer between motor parts.
– Shorting ring.
– Built to order with custom specifications.
– Made in the USA.
– Optional upgrades available.

Electrical Specifications
– Nominal configuration: dual 2 Ohm 12″ subwoofer
– Continuous power handling: 5000 Watts
– Maximum power handling: 12000 Watts
– Voice coil diameter: 101.6 mm
– Frequency response: 15 Hz – 250 Hz
– Sensitivity: 83.3 dB
– DC resistance (Re): 1.9 Ohms
– Resonant frequency (Fs): 23.44 Hz
– Xmax: +/- 22 mm
– Compliance (Vas): 23.63 l
– Total Q (Qts): 0.352
– Mechanical Q (Qms): 5.398
– Electrical Q (Qes): 0.377

Physical Specifications
– Mounting diameter: 309.6 mm
– Mounting depth: 292.1 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.