DB Drive Euphoria XPERT EX300.4 Full Range Class D 4-Channel Amplifier
DB Drive Euphoria XPERT EX300.4 Full Range Class D 4-Channel Amplifier
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DB Drive Euphoria XPERT EX300.4 Full Range Class D 4-Channel Amplifier
The DB Drive Euphoria XPERT EX300.4 is the highest-output of the three 4-channel EX amplifiers (EX100.4, EX200.4, EX300.4), rated 4 × 300W @ 4Ω and 4 × 500W @ 2Ω at 14.4 volts and 1% THD, or 2 × 600W @ 4Ω bridged. Its 9 in long, 5.20 in wide, 2.50 in high Class D chassis is listed as ideal for motorcycle and space-limited applications.
Top 4-channel power: 300W per channel at 4Ω
Four channels in a 9 in long chassis, with a damping factor listed above 114 at 1kHz and variable high-pass and low-pass filters on each channel pair.
- 4 × 300W @ 4Ω (14.4V, 1% THD)
- 2 × 600W @ 4Ω (bridged)
- Variable HP 20Hz–5kHz and LP 50Hz–5kHz filters
Key Product Details
| Model | DB Drive Euphoria XPERT EX300.4 |
| Type | 4-channel full range Class D amplifier |
| Power at 4Ω | 4 × 300W @ 4Ω |
| Power at 2Ω | 4 × 500W @ 2Ω |
| Bridged power | 2 × 600W @ 4Ω (bridged) |
| Minimum working impedance | 2 ohm stereo |
| Working voltage | 10–16 volts |
| Dimensions | L 9 in / 228.6mm × W 5.20 in / 132.08mm × H 2.50 in / 63.50mm |
Power ratings are measured at 14.4 volts and 1% THD.
System Planning
At 14.4 volts the EX300.4 is rated 4 × 300W @ 4Ω and 4 × 500W @ 2Ω, or 2 × 600W @ 4Ω (bridged). Pick speakers whose RMS rating suits the per-channel power at your final impedance, and use the variable filters on each channel pair to set high-pass and low-pass points.
Listed Features
- 4-channel Class D circuitry
- ACT (Adaptive Crossover Technology)
- High-efficiency full range Class D technology
- Direct connect speaker terminals
- Large gauge power wire inputs
- APC (Audio Protection Circuit)
- SESI (Signal Evaluation Status Indicator)
Specifications
| Test conditions | @14.4 volts, 1% THD |
| Power at 4Ω | 4 × 300W @ 4Ω |
| Power at 2Ω | 4 × 500W @ 2Ω |
| Bridged power | 2 × 600W @ 4Ω (bridged) |
| Working voltage | 10–16 volts |
| Frequency response | 10Hz–20kHz |
| Signal-to-noise ratio | < 95dB |
| Damping factor at 4Ω | > 114 / 1kHz |
| Low-level input | 6V–0.2V |
| Channels 1/2 high-pass filter | Variable, 20Hz–5kHz |
| Channels 1/2 low-pass filter | Variable, 50Hz–5kHz |
| Channels 3/4 high-pass filter | Variable, 20Hz–5kHz |
| Channels 3/4 low-pass filter | Variable, 50Hz–5kHz |
| Minimum working impedance | 2 ohm stereo |
| Length | 9 in / 228.6mm |
| Width | 5.20 in / 132.08mm |
| Height | 2.50 in / 63.50mm |
Specifications as published by DB Drive; power measured at 14.4 volts and 1% THD.
Related Paths
DB Drive XPERT EX300.4 FAQ
How much power does the EX300.4 make?
At 14.4 volts and 1% THD it is rated 4 × 300W @ 4Ω, 4 × 500W @ 2Ω and 2 × 600W @ 4Ω (bridged).
What is the minimum impedance?
The listed minimum working impedance is 2 ohm stereo.
What filters does it have?
Variable high-pass (20Hz–5kHz) and low-pass (50Hz–5kHz) filters on channels 1/2 and on channels 3/4.
What voltage range does it work across?
The listed working voltage is 10–16 volts.
How big is it?
9 in / 228.6mm long × 5.20 in / 132.08mm wide × 2.50 in / 63.50mm high.
What can it power?
DB Drive describes it as capable of powering high-performance tweeters, compression drivers and midranges, and lists it as compact for motorcycle and space-limited applications.
Need Help Choosing?
We can match the EX300.4 to your speakers, wiring and installation location. Call or start a build consultation.