Ground Zero - Sophisticated Car Audio
Harking way back to 1995, this astute German brand with American roots has progressively grown in international fame to nowadays being one of the leading manufacturers of powerful car audio hardware. Ground Zero is currently distributed throughout more than eighty-two countries worldwide, offering an enormous range of car audio products; all of which are developed in Germany. Today the Ground Zero brand is one of the world's most respected names in car audio. The best evidence of this perhaps is provided by comparison-tests across numerous independent publications and events, where said products consistently continue to to placed ahead of all the competition when it comes to performance, features, quality and price.

Ultra Series – Ground Breaking Performance
When talking extreme audio not everyone is looking to be hammered into submission. On the contrary there's an echelon of discerning audiophiles who desire supreme sound quality above all else. Articulated deep bass, delectably controlled midrange, and supremely accurate highs. Barriers are there to be broken, and budget is of secondary concern. This is the territory of Ground Zero's Ultra range. Developed with every detail heavily scrutinised; this is as close to aural perfection and German engineering gets.

Design Ideologies
Ground Zero has been working in and around the high-end sound quality scene for decades now. Not only in manufacturing and design but also rigorous competition too. Gaining experience aplenty, not to mention a wealth of information and ability during this lengthy tenure; Ground Zero eventually launched an product range to dominate all. Welcome to the Ultra range; designed to lead from the front.

Performance Born From Experience
Taking advantage of it’s vast amount of skills, experience and technical acumen gained from it’s worldwide competition customers; Ground Zero started to design a super high-end product line called Ultra. For the most sophisticated demands, this range includes amplifiers and speakers for those customers too discerning for most companies to satisfy.

Simply The Best
Put simply; the Ultra series speakers are designed for the most demanding music lover. Carefully built by hand with the best materials and selected in pairs, they are delivered in fine wooden boxes.

Advanced Woofer Technology
The ULTRA K-165 midrange driver employs a high-tech fabric cone that’s made in Germany, in conjunction with linear suspension and a narrow-tolerance copper voice coil with a linearised neodymium motor. Built in a magnetically inert filigree aluminum basket for optimal air flow, these are the ingredients for outstanding neutrality and sound quality.

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 them include:
– Ultra-high-end 6.5″ / 165 mm woofer.
– Tightly-tolerated technical parameters.
– Lightweight carbon-fleece sandwich cone.
– High-excursion linear moving rubber surround.
– Vented voice coil former for reducing distortion.
– Round CCA wire voice coil increasing power handling.
– Airflow-optimized magnetically inert aluminum cast spokes.
– Documented final technical inspection.
– Wooden box packaging.
– Created in matching pairs.
– Protective grills available separately.

Electrical Specifications
– Nominal configuration: one-way 6.5″ active midrange set
– Continuous power handling: 100 Watts
– Maximum power handling: 160 Watts
– Voice coil diameter: 34 mm
– Frequency response: 45 Hz – 5000 Hz
– Sensitivity: 87 dB
– DC resistance (Re): 3.9 Ohms
– Resonant frequency (Fs): 43 Hz
– Xmax: +/- 5 mm
– Compliance (Vas): 20.4 l
– Total Q (Qts): 0.51
– Mechanical Q (Qms): 5.56
– Electrical Q (Qes): 0.56

Physical Specifications
– Mounting diameter: 147 mm
– Mounting depth: 67 mm
– Weight: 1.8 kg

Documentation
– User manual

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.