Hertz DP 4.300 - 4-channel Class-AB amplifier for Hi-Res Audio and flexible setups
The Hertz DP 4.300 is a 4-channel amplifier that offers you clean power, Hi-Res Audio compatibility, and extensive filter options for precise tuning. The frequency range extends up to 50 kHz, with a -3 dB bandwidth of 10–45 kHz – ideal for detailed high-frequency reproduction. Thanks to 2 Ω stability, bridgeable channels, and front pre-out, you can set up various system configurations, from an active front system to a bridged sub/front setup. Balanced inputs, Auto Turn-On (ART), and speaker inputs facilitate integration into OEM radios. A status LED and removable top plate complete the design. Available at Carhifi.shop.
Technical Highlights
- Channels: 4 / 3 / 2 (bridgeable)
- Amplifier Class: AB
- Hi-Res Audio capable: Frequency range up to 50 kHz
- Bandwidth (-3 dB): 10 Hz – 45 kHz
- 2 Ω stable (4-channel operation)
- Balanced input circuit for clean signal transmission
- High- and low-pass per front/rear: Full / 50–4000 Hz, 12 dB/oct.
- Bass Boost: 50 Hz, 0–9 dB
- Front Pre-Out (Full-Range) for expansions
- Pre-amplifier or speaker input selectable
- ART Auto Turn-On/Off via SPK-IN (BTL Radio)
- Status LED, removable top plate
Features & Specifications
- Rated voltage power supply (fuse): 11–15 VDC (2 × 20 A)
- Operating voltage: 6.5–16.5 VDC
- Idle current: 0.8 A
- Standby current consumption: 5 µA
- Consumption at minimal load (max. music power): 24 A
- Remote IN: 4–15 VDC (1.5 mA)
- ART switching threshold (SPK-IN, BTL): 1.5 VDC
- Efficiency: 59 %
- THD at 100 Hz, 70 % rated power: 0.015 %
- Damping factor (1 kHz, 1 W): 105
- Signal-to-noise ratio (A-weighted, 1 V input): 100 dBA
- Minimum load impedance:
- 4-channel operation: 2 Ω
- 3-channel operation: 2 Ω + 2 Ω + 4 Ω
- 2-channel operation: 4 Ω
- Inputs: Pre-amplifier input / Speaker input
- Pre-amplifier output: Full range (Front)
- Pre-amplifier input sensitivity: 0.32–8 VRMS
- Speaker input sensitivity: 1.6–40 VRMS
Power Ratings (RMS)
- @ 1 % THD, 14.4 VDC:
- 4 Ch @ 4 Ω: 60 W × 4
- 4 Ch @ 2 Ω: 85 W × 4
- 3 Ch @ 4 Ω: 60 W × 2 + 170 W × 1
- 3 Ch @ 2 Ω / 4 Ω: 85 W × 2 + 170 W × 1
- 2 Ch @ 4 Ω (bridged): 170 W × 2
- @ 10 % THD, 14.4 VDC:
- 4 Ch @ 4 Ω: 75 W × 4
- 4 Ch @ 2 Ω: 105 W × 4
- 3 Ch @ 4 Ω: 75 W × 2 + 210 W × 1
- 3 Ch @ 2 Ω / 4 Ω: 105 W × 2 + 210 W × 1
- 2 Ch @ 4 Ω (bridged): 210 W × 2
- Total Power: 840 W
Installation & Compatibility
You can use the DP 4.300 flexibly: as a 4-channel power amplifier for a front/rear system, 3-channel with bridged sub, or 2-channel bridged for high power at 4 Ω. Thanks to speaker inputs and ART function, retrofitting to OEM BTL radios is easy. The 2 Ω stability in 4-channel operation and the filters with 50–4000 Hz allow for clean crossovers – active or passive, depending on the concept. The power supply operates safely within the range of 6.5–16.5 V.
