About: Hertz S8 DSP Ultra Compact Digital Interface Processor

The ultra-compact S8 DSP is the perfect solution for integrating any OEM source into your audio upgrade project for cars, motorcycles, and boats! S8 DSP is a distilled essence of technology at the service of the highest audio quality in a corrosion-free case cast in metal and composite materials.

S8 DSP processes the audio signal with 96 kHz / 24-bit resolution and has obtained the Hi-Res certification from the JAS (Japan Audio Society), an acknowledgment that certifies the extreme level of audio performance achieved.

The powerful 32-bit DSP manages 6 high/low-level analog input channels, one digital coaxial input, and 8 output channels, offering maximum freedom of configuration to the specialist. The SPDIF coaxial input is ideal for digital connection with a Hi-Res player, a solution that allows for maximum listening quality. For each of the eight output channels we have a level control, the 15-pole parametric equalizer, time delays, and crossover filter available. The 7-band parametric equalizer of the input signal allows obtaining a flat response from OEM sources, which often have an exaggerated emphasis on the low frequency.

Specifications: 

• Nominal Power supply voltage / fuse: 7 ÷ 20 VDC / 1A
• Pulse Operating Voltage: 5 ÷ 24 VDC
• Idling Current: 0.34 A
• Off Current (ART= OFF): <80 uA
• Off Current (ART= ON): <80 uA
• Remote In: 6 ÷ 20 VDC (10 mA)
• Remote Out: 4 ÷ 20 VDC (150 mA)
• ART - Automatic Remote Turn on/off from BTL speaker outputs (selectable): 1.5 ÷ 7 VDC
• Max size (W x H x D): 5.11" x 1.44" x 3.47" (130 x 33.8 x 88.3 mm) 
• Weight: 1.45 LB (0.66 Kg)   

Input Stage: 

• Analog Low Level Inputs: 6 ch. (Differential input) (Molex microfit to RCAs)
• Analog High Level Inputs: 6 ch. (Differential input) (Molex microfit to tripped ends) + USS (Universal Speakers Simulator)
• Digital Inputs: Yes (Coaxial SPDIF; up to 24bit 96KHz) (Molex microfit to RCA)
• Input Sensitivity (low level): 0.8V – 6V RMS
• Input Sensitivity (high level): 2.5V – 21V RMS
• Analog Inputs Management: Audio input routing matrix type
• Analog Inputs Eq: 7 bands paragraphic for each input channel
• ART: Automatic Remote Turn-On/Off with Speaker-In

Output Stage: 

• Analog outputs (rca)8 channels
• Max output level (rms) @ 0.05% THD4V
• Analog outputs managementThe DSP controls each output channel: gain, crossover, EQ, delay, polarity
• Bandwidth10Hz – 40KHz (+/-3db)
• Signal to noise ratio (A weighted)105dBA (Analog Input) 112dBA (Digital Input)
• THD+N (@ 1Vrms out, @ 1Khz)<0.005%
• Crosstalk (channel separation) @ 1KHz>95dBA

Digital Signal Processor: 

• Sample Rate: 96KHz
• Bit Depth: 24
• Output Equalizer: 15 bands per channel w/ adjustable Q and Frequency
• Equalizer Resolution: 1/10th dB per step +12dB / -12dB
• Time Alignment (Distance): 0 ÷ 468.4 cm / 0 ÷ 184.4 inches
• Time Alignment (Time): 0 ÷ 13.5ms
• Time Alignment (Step): 0,08 ms; 2,8 cm / 1.1 inch
• Time Alignment (Fine Set): 0,02 ms; 0,7 cm / 0.27 inch
• CrossoversL AP/HP/LP/BP all channels
• Crossover Type: Butterworth, Linkwitz-Riley, Bessel (All Channels)
• Crossover Slope: From 6dB/oct. until 30dB/oct. (6dB step)
• Crossover Steps: 120 steps 20Hz-20KHz
• Mute Function: Each channel individually, or all channels.
• Presets: 4 presets
• Presets Selection: 2 specific wires to control the 4 presets selection by extarnal switches.
• Input Selection by Wire: One specific wire to select the desired input between Analog or Digital.
• Audio Signal Compressor on Output Stage: Yes (enable/disable)
• DSP Chipset: Analog Device: ADAU1451
• DSP Management by BT App (iOS/ Android):
• 1. CONFIGURATOR mode Mainly it’ll allow the DSP tuning. You can manage every DSP functon through your smartphone/ tablet/PC/MAC.
• 2. DRC mode The BT device becomes a remote control by using the dedicated app with a simple graphical user interface. Manage volume level, SUB level, select different setup files, upload a new setup file.
• Setup File Sharing via BT: Upload a setup file via BT through the BT APP when in “Configurator” or “DRC” mode.
• DSP Management by PC / Mac / IOS / Android: Microsoft Windows (32/64 bit): Windows 10 (USB and BT BLE) Windows 11 (USB and BT BLE) Mac Os: 10.13 Hight Sierra or later (USB and BT BLE)