【HELIX V-EIGHTEEN DSP｜20ch DSP Built-in / 18ch Power Amplifier】

A high-function DSP amplifier from HELIX designed for those who want to fine-tune the sound of their factory audio a bit more, or who want to progress further by replacing speakers and building a true full-active setup.

HELIX V-EIGHTEEN DSP is a model that integrates a 20ch DSP processor and an 18ch digital power amplifier. While precisely controlling signals from a factory multi-speaker system, it can also support a setup where each speaker is driven independently.

Since it features 18ch high-level inputs, it’s an easy configuration to incorporate into system upgrades that take advantage of the factory amplifier and factory audio. Whether you want to adjust the current sound without changing it drastically, or you want to create sound tailored to the vehicle—including speaker replacement and adding a subwoofer—this unit can accommodate a wide range of needs.

DSP Amplifier for Tuning Sound to Your Car

With DSP, you can set details such as time alignment, level adjustment for each channel, and the equalizer.

Inside the car, the distances to the left and right speakers differ, and you’re also affected by the dashboard, glass, seats, and more. Even when using the same speakers and amplifier, whether or not you perform vehicle-specific adjustments will change the vocal position and how tightly the sound comes together.

With the HELIX V-EIGHTEEN DSP, you can tune the aspects of the factory system you care about, and bring out the performance after a speaker upgrade—so you can adjust your playback toward a more natural enjoyment of the music you listen to every day.

Inside are two 64bit processors, along with a 32bit coprocessor. It also uses 24bit Burr-Brown AD/DA converters, making it a model well worth considering for people who want to prioritize the amount of sound information and smoothness as the centerpiece of a system that performs fine adjustments.

For Those Who Want to Consider Installation and Tuning Too

For a DSP amplifier in this class, the sound isn’t determined by the unit’s performance alone.

Depending on the factory audio configuration of the vehicle, the number of speakers, whether there is an existing amplifier, and how it’s combined with added speakers or a subwoofer, the required connection methods and tuning content will vary. It’s important to plan the overall system from the start, including wiring processing and installation methods.

At LOGON, rather than deciding based on the product alone, we review your vehicle model and current system, and how you usually listen to music—then we organize together where it makes sense to let the DSP amplifier handle the work.

The appropriate configuration changes depending on whether you want to “tune the sound while making use of the factory setup” or “build a serious system including the speakers.” If it were me, I would first confirm your vehicle specifications and preferences, then determine the required number of channels and connection method. It’s important to create a system that’s actually easy to listen to and comfortable to use long-term, rather than trying to use every feature to the fullest.

If you’d like to consult—focused on the HELIX V-EIGHTEEN DSP—about your current sound concerns and future system upgrades, let’s decide on a direction together while checking your vehicle details.

Main Specifications / Specs

【Basic Information】

• Product name: HELIX V-EIGHTEEN DSP
• Brand: HELIX
• Type: 20ch DSP processor built-in / 18ch Class D power amplifier
• DSP channel count: 20ch
• Amplifier channel count: 18ch
• Bridge connection: Not supported

【DSP / Processing Performance】

• DSP: 64bit processor × 2
• DSP operating frequency: 295MHz
• Coprocessor: 32bit
• Time alignment: 7.1mm / step
• Level adjustment: 0.10dB / step
• Pure Class Ultra GD: Adopted

【Inputs】

• High-level inputs: 18ch
• RCA inputs: 6ch
• Digital input: TOS optical digital
• Input impedance: ADPEP.3 automatic switching
• Auto power-on: Supported, switch-select type

【Outputs】

• Speaker outputs: 18ch
• RCA outputs: 2ch
• RCA output level: 3V
• Maximum output: 160W × 6ch (2Ω)

【AD/DA / Sound Quality Performance】

• AD/DA converter: 24bit Burr-Brown
• S/N ratio: up to 107dB (digital input)
• S/N ratio: up to 102dB (analog input)
• THD: 0.015%

【Connections / Expansion】

• SCP terminal: Built-in
• HEC slot: Built-in
• USB-mini: Built-in
• External controller: DIRECTOR compatible
• Connection to DIRECTOR / power supply: Use SCP terminal

【Main Unit Size / Power】

• Size: 220 × 44 × 255mm
• Weight: 3.0kg
• Built-in fuse: mini 30A × 3

【Included Accessories】

• USB cable (1.8m)
• I/O cable
• Hex key