Helix DSP Ultra (DSP – Series)

HELIX DSP ULTRA

The HELIX DSP ULTRA isn’t just another signal processor—it’s a leap forward in high-end audio innovation. Crafted for uncompromising audiophiles and powered by cutting-edge DSP and analog technology, it redefines what’s possible in automotive sound tuning. Whether you’re installing a complex multi-way sound system or fine-tuning factory integration, the DSP ULTRA delivers pristine audio quality, intelligent features, and unmatched configuration flexibility.

TwinDSP Power – Extreme Processing Performance

At the heart of the DSP ULTRA are two Analog Devices 64-bit fixed-point DSPs performing a staggering 2.4 billion MAC operations per second. This massive computing power ensures that each of the 12 output channels is processed with ultra-high precision. Combined with a 96 kHz sampling rate, the system achieves an extended audio bandwidth exceeding 40 kHz—perfect for high-resolution audio playback.

ACO Platform – Intelligent Control and Speed

The integrated 32-bit ACO (Advanced CoProcessor) platform offloads all control tasks, boosting system responsiveness and enabling ultra-fast switching between up to ten sound setups. ACO also powers advanced features like:

• Input Signal Analyzer (ISA): Accurately analyzes incoming signals from factory systems.
• Input EQ: Simplifies tuning by automatically compensating for pre-configured EQ curves.
• Sound FX (SFX): Enables proprietary features like StageXpander and Augmented Bass Processing.

Unmatched Audio Performance

Every element of the DSP ULTRA’s audio path is designed for pure sonic excellence. A newly developed, ultra-low-noise analog input stage ensures full audio fidelity up to 40+ kHz. Power supply filtering has been painstakingly refined to eliminate interference, and only top-tier TI/Burr-Brown OPA-series op-amps are used throughout. The result: a clean, powerful, and dynamic sound signature with high-resolution transparency.

Virtual Channel Processing – Redefining Signal Routing

Traditional signal routing struggles with modern multi-input OE systems. The DSP ULTRA introduces Virtual Channel Processing (VCP), allowing intuitive, multi-stage signal routing. This technology simplifies complex setups like multi-way front stages or mixed signal paths and enables free assignment of DSP sound features like RealCenter and StageEQ across any channel.

Comprehensive Connectivity and OEM Integration

Designed to integrate seamlessly into modern vehicles, the DSP ULTRA features:

• 8 RCA/Cinch inputs
• 8 high-level speaker inputs with ADEP.3 anti-error detection
• Optical and coaxial SPDIF inputs
• 12 RCA/Cinch outputs with up to 8V output voltage

Its input sensitivity range (1–8V RCA / 4–32V high-level) supports everything from aftermarket decks to high-power OEM amplifiers, making it incredibly versatile. Built-in start-stop support and a ground lift switch ensure stability in real-world installations.

Smart, Compact, and Elegant Design

Despite its massive capabilities, the HELIX DSP ULTRA maintains a sleek and understated form factor that’s easy to install and blends seamlessly into any vehicle. The robust chassis and elegant design reflect the premium quality inside, making it both a high-performance tool and a visual complement to your sound system.

Advanced DSP Features

TuneEQ – Automated Frequency Correction

With just one measurement per channel or channel pair using a mic like the MTK1, TuneEQ automatically aligns your system’s frequency response to your reference curve. It uses full parametric EQ adjustment in the background—saving time and achieving professional-grade results with minimal effort.

RealCenter – Intelligent Center Imaging

RealCenter intelligently processes common content from left and right front channels to create a dynamic and spatially accurate center channel. Unlike traditional summing methods, it adjusts in real-time based on stereo content, avoiding the common pitfalls of narrow, unnatural center imaging.

Augmented Bass Processing – Next-Level Low-End

This proprietary suite includes:

• Dynamic Bass Enhancement: Boosts deep bass while dynamically adjusting subsonic filters to protect your subs.
• SubXpander: Adds subharmonics for a deeper, fuller bass experience between 50–100 Hz.

Together, these features ensure tight, controlled bass at all volume levels without distortion or overload.

Expansion and Control Options

The integrated HELIX Extension Card (HEC) slot opens the door to additional input/output options such as:

• Bluetooth® audio streaming
• High-resolution USB audio playback
• Wireless control

Plus, remote inputs support a variety of HELIX accessories and volume controllers, giving you full control from the driver’s seat.

Key Technical Highlights

• Dual 64-bit DSPs with 2.4 billion MAC/s
• 32-bit AKM AD/DA converters
• 12 processed channels
• Virtual Channel Processing (VCP)
• 10 memory slots for sound setups
• HEC slot for expansions
• Smart 8-channel high-level input with ADEP.3
• Ground lift and start-stop support
• 8 RCA + 8 high-level + SPDIF (optical & coaxial) inputs
• 12 RCA outputs with 8V max output
• Time alignment up to 20 ms/channel
• Reversible delay for input phase matching
• Separate routing matrices for all input types