SOUND MAGUS EP16S

EP16S 16-Channel Digital Signal Processor – Technical Overview

The EP16S is a multi-channel digital audio signal processor optimized for advanced automotive acoustic systems. The architecture implements 16 discrete DSP-controlled output channels with independent filtering, equalization, and time-domain management, enabling precise multi-driver system integration.

Power Management

• Operating Input Voltage: 7.5–16 VDC

• Standby Current: <0.5 mA

• Quiescent Current: 0.44 A

• Remote Output: 12 VDC (380 mA sink capacity)

• Recommended External Fuse Protection: 0.9 A
  The supply design ensures stable low-noise operation with controlled turn-on/turn-off sequencing and external amplifier triggering via REM output.

Input Topology

• Analog High-Level Inputs: 16 channels, max 18 Vrms, input impedance 4.7 Ω

• Analog Low-Level Inputs (AUX): 2 channels, 2.0 Vrms, input impedance 20 kΩ

• Digital Inputs: 1 × Optical (96 kHz/24-bit), 1 × Coaxial

• Bluetooth Interfaces:

  • Integrated Bluetooth 5.1 (SBC/AAC support)

  • External Bluetooth 5.0 (AAC, APTX-L, APTX-LL, APTX-HD, MP3, SBC)

This dual-path input stage allows simultaneous accommodation of OEM high-voltage signals and aftermarket low-level sources, with support for high-resolution PCM digital transport.

Output Architecture

• Channels: 16 discrete low-level outputs

• Output Voltage: 5 Vrms @ 14.4 V, 1 kHz, 1% THD

• Frequency Response: 20 Hz – 40 kHz (±3 dB)

• THD: 0.01% @ 1 kHz, 1 Vrms

• SNR (A-weighted, THD=1%): >95 dB

• Channel Separation: ≥105 dB @ 1 kHz

Each output channel operates under independent DSP control with deterministic routing, processing, and gain calibration.

DSP Processing Structure

Crossover Filters

• Type: Linkwitz-Riley, Bessel, Butterworth

• Frequency: 20 Hz – 40 kHz, 1 Hz increments

• Slope: 6 – 48 dB/oct selectable per channel

Equalization

• 31-band EQ per channel (parametric or graphic)

• Frequency resolution: 1 Hz

• Gain range: -12.0 dB to +12.0 dB in 0.1 dB increments

• Q range: 0.404 – 28.852

Phase and Time Alignment

• Adjustable phase: 0° – 360°

• Delay: 0.000 – 20.000 ms, resolution in 0.001 ms steps

  • Equivalent: 0 – 692 cm / 0 – 272.8 in

Level Control

• Per-channel attenuation: -60 dB to 0 dB, 0.1 dB increments

• Master volume: -60 dB to +6 dB, 0.1 dB increments

Control Interfaces

• PC Interface: Windows-compatible, driverless software environment

• Mobile Interface: Smartphone application (external Bluetooth module required)

• Direct Hardware Interface: Wired controller

• Shutdown Delay: Programmable, 0 – 255 s

Mechanical Parameters

• Chassis Dimensions: 137 mm (L) × 223 mm (W) × 50 mm (H)

• Mounting: Compact form factor suitable for constrained automotive integration

The EP16S is positioned as a signal-domain control hub within distributed amplifier-loudspeaker topologies, providing deterministic crossover alignment, phase coherence correction, and fine-resolution amplitude shaping. The processing architecture allows for precise system calibration across both time and frequency domains, enabling accurate reproduction in multi-driver, multi-amplifier automotive installations.