【DSP.3C | 8ch DSP Processor with Coaxial Digital Input】

You want to fine-tune the sound from your factory audio a bit more. Even after replacing the speakers and adding a subwoofer, when you listen inside the car, you still want a little more cohesiveness in the sound. That’s where the DSP.3C comes in.

Designed based on the HELIX-DSP.3, this digital processor now supports coaxial digital input. In addition to high-level input, RCA input, optical digital input, and HEC card input, you can also choose coaxial digital input—so it can handle everything from sound-quality improvements that make use of your OEM system to system building using digital sources.

In a car, sound doesn’t overlap cleanly from each speaker as-is due to factors such as the speakers’ positions, the distance between left and right, and reflections from the dashboard and doors. With the DSP.3C, you can use a PC to precisely set an 8ch independent crossover, equalizer, time alignment, and phase adjustment.

Dial it in so vocals naturally localize at the center, or adjust the connection between the front speakers and subwoofer so that only the bass doesn’t stand out. It’s not just about making the sound louder—it’s equipment designed to bring your everyday music to a state where you can enjoy it comfortably inside the car.

It’s important to think of a DSP not as something you install and then stop there, but as something that also includes adjustments tailored to your vehicle. Even using the same DSP.3C, the final result will vary depending on the input method, the speakers you combine, the installation method, and the in-car environment. At Logon, we’ll organize a practical system together while confirming your OEM system, current configuration, the music you usually listen to, and the direction of sound you want to achieve.

This processor is suited for those considering sound-quality improvement using a DSP, those who want to further refine the sound after swapping speakers, and those who want to take advantage of digital input. Since the appropriate connection method also changes depending on the vehicle model and your current audio setup, please tell us first about your existing system and your preferences. Let’s create a satisfying result by checking your sound concerns one by one.

Main Specifications / Specs

【Basic Information】
Product name: DSP.3C
Type: Digital processor
Adjustment: PC-based settings

【Inputs】
High-level input: 6ch
RCA input: 6ch
Optical digital input: Supported (96kHz / 24bit)
Coaxial digital input: Supported (192kHz / 24bit)
HEC card input: Supported

【Signal Processing】
Processor: 64bit
Clock frequency: 295MHz
Sampling rate: 96kHz / 24bit
Independent adjustment: 8ch

【Adjustment Functions】
Crossover (DIV)
Equalizer (EQ)
Time alignment (TIME)
Phase (PHASE)
Various other acoustic adjustments

【Main Parts】
A/D / D/A converters: Manufactured by Burr-Brown
Op-amps: Equipped with high-quality op-amps

【Performance】
Total harmonic distortion: 0.0006% or less
S/N ratio: 114dB or higher (with digital input)
Maximum RCA output voltage: 6V

*The information provided has been organized based on specifications that could be confirmed. Connection methods to the vehicle and installation details will be provided after checking the OEM audio specifications and your current system configuration.