HELIX C ONE - ONE CHANNEL CAR AUDIO AMPLIFIER.

Helix – Ubiquitous Reference Standard Car Audio
Since its conception in 1990 Audiotec Fischer has evolved from a niche supplier to an internationally recognised leader in innovative audio products. A DIN ISO 9001 and ISO 14001 certified company, it now delivers its award-winning brands Brax, Helix and Match to more than fifty countries worldwide. To Audiotec Fischer the label "Made in Germany" has always been more than just a designation of origin; it's a promise of quality that everyone at the Schmallenberg site remains committed to. Audiotec Fischer has more than thirty years of experience in the development and manufacture of high-end car and home audio products. From the initial brief through to the finished product; all components are assembled in-house with the sole aim of reproducing acoustic signals as authentically as possible whilst optimizing the sound experience ever further.

C Series – When Audiophile Quality And Gargantuan Power Collide
The C series of amplifiers from Helix epitomise what happens when one of the world’s most masterful amplifier designers loosens off the shackles of restraint. Not to say Helix has gone completely daft pertaining to criteria like physical size and fiscal cost, but these aspects did take somewhat of a backseat as Helix set out to pursue amplified perfection.

Design Ideologies
The C ONE is a high-end one channel amplifier that is able to drive even the most demanding subwoofers to the max. The ultra-low noise and ultra-low distortion class A driver stage feeds a total of 32 hand selected MOSFET power transistors, resulting in an incredible damping factor of 1000 for relentless control of every loudspeaker.

Additionally the intelligent regulation of the power supply assures stable conditions for the output stages and therefore phenomenal output power that is almost independent of the vehicular battery voltage. And for even more output power two C ONE amplifiers can be combined to one single powerhouse, thanks to the TwinPower Link technology.

Yet despite its impressive output power the C ONE is by no means a pure subwoofer amplifier. Thanks to an extended frequency response up to 80 kHz and an architecture that has been meticulously scrutinised designed down to the last detail for ultimate sound quality, the C ONE is also a perfect buddy for heavy-duty mid-woofers in audiophile systems.

In combination with the optionally available digital input module HDM 1, the C ONE demonstrates the perfect transition to the digital era. The HDM 1 accepts digital audio signals up to 96 kHz sampling rate via its optical input followed by cutting-edge BurrBrown D/A converters with 32-bit resolution that transform the signals back to the analogue domain. Therefore the C ONE is absolutely future-proof and perfectly prepared for the combination with modern digital sound processors.

Design Features
The Helix engineering department is at the forefront of research pertaining to every aspect of amplification. It’s developed proprietary analysis systems and invested heavily in state-of-the-art manufacturing and testing. The resulting range of products has become widely considered as reference standard, as this ingenious company continues to push the technology envelope further. Let’s take a closer look at some of this tech.
– Extremely powerful Class AB amplifier with up to 1o100 watts continuous at 1 Ohm.
– A perfect match for all 2 x 2 Ohms subwoofers connected in parallel.
– Extreme audio bandwidth for exceptional sound quality.
– Ideal for high resolution audio.
– Ultra-low noise and distortion free power amp drivers in class A technology.
– Enormous damping factor of 1000 @ 4 Ohms for perfect speaker control.
– Optionally available digital input module (HDM) to extend the amplifier with two optical digital inputs in SPDIF format.
– Integrated active crossover with high-pass, low-pass, band-pass, bass boost and phase control.
– Regulated DC / DC switching power supply with start – stop capability down to 6V supply voltage.
– Microprocessor based monitoring of amplifier status including temperature dependent fan control.
– Input mode switch for flexible routing of the input signals.
– Cutting edge BurrBrown D/A converters with 32-bit resolution in combination with the optional HDM 2 module.
– Massive 24-carat gold plated power and speaker terminals.
– Quad layer PCB with extra solid 70μ copper traces for lowest possible losses.
– Features surface mounted device manufacturing technology.

Start-Stop Capability
The switched power supply of the C ONE assures a constant internal supply voltage even if the battery’s voltage drops to six volts during engine cranking.

High Resolution Audio
The extreme audio bandwidth of the amplifier ensures a lossless audio reproduction of high resolution audio content, to provide the best possible sound in studio quality.