HELIX P TWO - 2-channel High-Res amplifier with integrated, active crossover and digital signal input
Plenty of power and sensitivity – the new P TWO combines two talents in an absolutely unique way. Due to its RMS output power of 2 x 490 Watts into two Ohms, this compact amplifier is able to drive even powerful subwoofers to the max. The technical design is literally predestinated for all woofers with 2 x 2 Ohms dual voice coil like the new HELIX Q subwoofers.
But despite its sheer force the P TWO is by no means a pure subwoofer amplifier. On the contrary, the Ultra HD Class D concept combines an extended frequency response above 40 kHz with high damping factor, minimal distortion and excellent signal-to-noise ratio. Therefore, this amplifier is likewise a perfect buddy for heavy-duty front speakers in audiophile system concepts.
Features
- “Ultra HD Class D” concept which combines the high-end sound quality of Class AB technology with the benefits of Class D amplifiers
- Two speaker outputs with 490 Watts RMS each at 2 Ohms
- Digital, optical signal input in SPDIF format including SPDIF Direct In switch for routing the digital input signal directly to the power stage
- BurrBrown DA signal converter of the latest generation with a resolution of 32 Bit
- Integrated, active crossover with highpass, lowpass, bandpass and configurable bass boost
- Smart highlevel input with ADEP circuit
- Cable remote control for volume adjustment
- Compact design with low heat dissipation thanks to extraordinary efficiency
Special features:
Ultra HD Class D amplifier technology
Compared to conventional Class D amps, this concept achieves an extended frequency response to more than 40 kHz in combination with reduced distortion thanks to an advanced integrated feedback design. Ultra HD Class D achieves outstanding, “Class AB-like” sound quality combined with the efficiency of a Class D amplifier.
Signal converters with a native resolution of 32 Bit
The HELIX P TWO uses for the optical input a highclass DA signal converter of the latest generation with a native resolution of 32 Bit instead of the common 24 Bit. The result is an unprecedented precision in signal conversion that especially optimizes the sound quality at lower signal levels.
Smart highlevel input
The latest generation of OE car radios incorporates sophisticated possibilities of diagnosing the connected speakers. If a common amplifier will be hooked up failure messages and loss of specific features (e.g. fader function) quite often appears - but not with the P TWO. The new ADEP circuit (Advanced Diagnostics Error Protection) avoids all these problems without loading the speaker outputs of the OE radio during high volumes unnecessarily.
Start-Stop capability
The switched power supply of the HELIX P TWO assures operation even if the battery’s voltage drops down to 6 Volts during engine crank.
Technical data
| Output power RMS / max. | |
| - @ 4 Ohms | 2 x 280 / 560 Watts |
| - @ 2 Ohms | 2 x 490 / 980 Watts |
| - @ 1 Ohm | - |
| - bridged @ 4 Ohms | - |
| - bridged @ 2 Ohms | - |
| Max. output power per channel* | Up to 600 Watts RMS @ 2 Ohms |
| Amplifier technology | Ultra HD Class D |
| Inputs | 2 x RCA / Cinch 2 x Highlevel speaker input 1 x Optical SPDIF (28 - 96 kHz) 1 x Remote In 1 x Remote control input |
| Input sensitivity | RCA / Cinch 2 - 8 Volts Highlevel 5 - 20 Volts |
| Input impedance RCA / Cinch | 10 kOhms |
| Input impedance highlevel | 13 Ohms |
| Outputs | 2 x Speaker output |
| Output voltage RCA / Cinch | - |
| Signal converter for digital input | BurrBrown 32 Bit DA converter |
| Frequency response | 10 Hz - 40,000 Hz |
| Bass boost | 0 - 9 dB / 40 Hz - 120 Hz |
| Highpass | 15 Hz - 4,000 Hz regelbar |
| Lowpass | 15 Hz - 4,000 Hz regelbar |
| Bandpass | 15 Hz - 4,000 Hz regelbar |
| Subsonic | - |
| Phase | - |
| Slope high- / lowpass | Butterworth 12 dB/Oct. |
| Slope subsonic / lowpass | - |
| Signal-to-noise ratio digital input | 105 dB (A-weighted) |
| Signal-to-noise ratio analog input | 105 dB (A-weighted) |
| Distortion (THD) | < 0.005 % |
| Damping factor | > 200 |
| Operating voltage | 10.5 - 16 Volts (max. 5 sec. down to 6 Volts) |
| Idle current | 2400 mA |
| Fuse | 3 x 30 A LP-Mini-fuse (APS) |
| Additional features | Active, adjustable crossover, bass boost, input mode switch, highlevel input with Advanced Diagnostics Error Protection (ADEP), Auto Remote switch, SPDIF Direct In switch, cable remote control for volume adjustment |
| Dimensions (H x W x D) | 50 x 260 x 190 mm / 1.97 x 10.24 x 7.48” |
* In typical multi-channel applications (2- / 3-way system + rear + subwoofer)
Scope of delivery
1 x Remote control
2 x Allen key
1 x Mounting material
1 x Instruction manual
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