Hertz SPL Show SP 4.900

Hertz SPL Show SP 4.900 - 4-Channel Amplifier with IP55 Enclosure and High Efficiency

The SPL Show SP 4.900 is a robust 4-channel amplifier from Hertz that combines power and reliability in a compact format. The ADC amplifier operates with up to 85% efficiency and can be easily operated with OEM head units thanks to the Universal Speakers Simulator (USS). The IP55 aluminum enclosure protects against dust and splashes, the sealed connections prevent oxidation, and the design allows for fanless operation. Centrally located filters and controls make quick and precise tuning in the vehicle easy for you.

Technical Highlights

• 4-, 3- or 2-channel operation selectable
• ADC amplifier with up to 85% efficiency
• Universal Speakers Simulator (USS) for secure connection to OEM head units
• IP55-protected aluminum enclosure, usable without a fan
• Sealed power, input and output terminals against oxidation
• Central, easily accessible crossover controls
• Adjustable crossovers available

Output Power (RMS @ 14.4 VDC, THD 1%)

• 4 Channels: 160 W x 4 at 4 Ω
• 4 Channels: 250 W x 4 at 2 Ω
• 3 Channels: 160 W x 2 at 4 Ω + 500 W x 1 at 4 Ω
• 3 Channels: 250 W x 2 at 2 Ω + 500 W x 1 at 4 Ω
• 2 Channels (bridged): 500 W x 2 at 4 Ω
• Total Power RMS: 1000 W

Inputs & Filters

• Inputs: Pre-IN (RCA) / Speaker Input
• Channels 1–2:
  • Full Range
  • High-Pass: 50–5,000 Hz @ 12 dB/Oct.
  • Low-Pass: 50–5,000 Hz @ 12 dB/Oct.
• Channels 3–4:
  • Full Range
  • High-Pass: 50–5,000 Hz @ 12 dB/Oct.
  • Low-Pass: 50–5,000 Hz @ 12 dB/Oct.
  • Bass Boost: 45 Hz, 0–8 dB (only with active Low-Pass)

Performance Data & Audio Parameters

• Rated Supply Voltage: 11–15 VDC
• Pulse Operating Voltage: 6–16 VDC
• Idle Current ON: 1.1 A
• Idle Current OFF: 0.03 mA
• Current Consumption @ 14.4 VDC, minimum load impedance (max. musical power): 50 A
• Remote IN: 6–15 VDC (9 mA)
• DC-REM: Automatic turn-on via speaker DC from BTL outputs: 3.5–7 VDC
• Total Harmonic Distortion (THD) @ 1 kHz, 4 Ω, 70% Rated Power: 0.02%
• Damping Factor @ 1 kHz, 4 Ω, 2 VRMS: 200
• Frequency Response (-3 dB): 10 Hz–35 kHz
• Signal-to-Noise Ratio (A-weighted @ 1 V input): 105 dBA
• Pre-IN Sensitivity: 0.6–6 VRMS
• Speaker Input Sensitivity: 2.2–22 VRMS

Installation & Compatibility

• Minimum Load Impedance:
  • 4-Channel: 2 Ω
  • 3-Channel: 2 Ω + 2 Ω + 4 Ω
  • 2-Channel (bridged): 4 Ω
• Protection Class: IP55
• Operating Temperature: 0 °C to 55 °C
• Maximum Dimensions (W x D x H): 211.6 x 130 x 49 mm
• Weight: 2.15 kg
• Mounting Dimensions/Drilling Pattern:
  • A: 205 mm
  • B: 211.6 mm
  • C: 107 mm
  • D: 130 mm
  • E: 49 mm

Are you looking for a compact amplifier for a front system, rearfill, or bridged subwoofer configurations for everyday use or SPL setups? The SPL Show SP 4.900 flexibly delivers power, is OEM-compatible, and remains permanently operational thanks to its IP55 enclosure.