Hertz S8 DSP is an 8-channel digital interface processor from the SPL Show line, built to integrate DSP control into OEM or aftermarket systems using speaker-level, RCA, and optical digital sources. It provides a full routing matrix and per-channel processing so you can build an active front stage, rear fill, and sub channels with proper crossover, EQ, and delay control. With 13 total inputs (including 6 speaker-level, 6 pre-in/RCA, and 1 optical S/PDIF) and 8 processed RCA outputs (up to 4V), the S8 DSP is designed for OEM integration, multi-amp builds, and DSP-based system tuning without replacing the factory source. Key Performance Features 13-input / 8-output DSP architecture with full input/output routing matrix Optical S/PDIF input supporting up to 96 kHz / 24-bit (with selectable extra gain) Per-output parametric EQ: 15-band, ±12 dB, 20 Hz–20 kHz Per-input parametric EQ: 7-band, ±12 dB, 20 Hz–20 kHz Active crossovers with multiple filter types and selectable slopes Time alignment per channel for staging and imaging control 4 onboard presets selectable via software or wiring Bluetooth 5.0 BLE connectivity for data/control (no audio streaming) Input / Output & Tuning Inputs: 6-channel high-level (Speaker IN), 6-channel low-level (Pre IN), 1x Optical S/PDIF (up to 96kHz/24-bit) Outputs: 8-channel RCA pre-out, max 4V Input sensitivity: Pre-In 0.8–6 Vrms; Speaker-In 2.5–21 Vrms Input impedance: 10 kΩ (Pre IN/AUX); 4.7 Ω (Speaker IN) Crossover filters: Full / High-Pass / Low-Pass / Band-Pass Filter families & slopes: Butterworth (6/12/18/24/30 dB), Bessel (6/12/18/24/30 dB), Linkwitz (12/24 dB) Crossover frequency steps: 20 Hz–20 kHz (120 steps) Phase control: 0° / 180° Time alignment: distance 0–471.5 cm (0–185.5 in.); delay 0–13.58 ms; step 0.02 ms (0.7 cm / 0.27 in.) Installation Use Cases OEM head unit integration (speaker-level input) with aftermarket amplification 8-channel DSP control for active front stage + rear + sub channel routing Systems requiring optical digital input and DSP-based tuning Competition/SPL builds needing routing flexibility, presets, and repeatable tuning control Technical Specifications Brand: Hertz Series: SPL Show Model: S8 DSP Type: Digital interface processor (DSP) Inputs: 13 total (6 Speaker IN, 6 Pre IN, 1 Optical S/PDIF) Outputs: 8-channel RCA pre-out Max output level: 4 V THD (1 kHz, 1 Vrms out): 0.004% Bandwidth (-3 dB): 10 Hz–40 kHz Signal-to-noise (A-weighted, 4V out): 100 dBA (Master input), 112 dBA (Digital IN) Channel separation (1 kHz): 97 dBA Power supply: nominal 7–20 VDC (1A fuse); pulse operating 5–24 VDC Idling current: 0.34 A Remote IN: 6–20 VDC (10 mA) Remote OUT: 4–20 VDC (150 mA) PC / device connection: micro USB; Bluetooth 5.0 BLE (data only) Software compatibility: Windows 8 (USB only); Windows 10 (USB + BT BLE); macOS 10.13+; Android 7+; iOS 12+ Operating temperature: 0°C to 55°C (32°F to 131°F) Size (W x H x D): 130 x 37 x 88.3 mm (5.12 x 1.45 x 3.48 in.) Weight: 0.66 kg (1.45 lb) What’s Included (1) Hertz S8 DSP processor Multipolar cable: Pre-IN / Digital-IN Multipolar cable: Speaker IN Multipolar cable: PWR / REM Multipolar cable: Output USB cable (1.8 m) 1A fuse Mounting screws (4) USB memory dongle (software, user manual PDF, audio test tracks) Quick start guide and warranty Why Buy From MCOR Automotive Authorized Hertz retailer OEM integration + DSP system design support Experienced tuning guidance for multi-channel builds Fast fulfillment with knowledgeable product support Fitment, Installation & Warranty Notes Fitment Help: Need help confirming fitment, compatibility, amplifier matching, or installation parts? Use our Fit Guide or contact us through the chat button before ordering. Authorized Retailer: MCOR Automotive is an authorized Hertz retailer. Products purchased from MCOR include applicable manufacturer warranty coverage when installed and used according to manufacturer guidelines.
