Helix AAC.3 HP – high-power high-low converter
The HELIX AAC.3 HP is a high-low converter that creates a stereo preamplifier signal from the speaker outputs of a factory amplifier, so aftermarket power amplifiers can be added to an OEM sound system. Its higher input capability of up to 25 V (= 155 W / 4 Ω) makes it the choice for OEM systems with a separate factory amplifier.
The integrated ADEP.3P circuit is designed to bypass speaker diagnosis in the factory system, avoiding error messages or loss of functions such as the fader, while preventing extra distortion and reducing the load on the OEM amplifier by up to 70%.
Key Features
- ADEP.3P circuit: bypasses factory speaker diagnostics
- High input level: max. 25 V (= 155 W / 4 Ω), 13 Ω input impedance; max. output 4.0 V
- Double Activation Circuit: +12 V remote via DC-offset detection or switchable signal detection with variable sensitivity
- Power Save Mode: remote output switches off after 2 minutes without signal
- High-Res ready: frequency response 18 Hz – 80 kHz
- Connectors: sealed, gold-plated RCA outputs
- Start-stop capable: operating voltage 7–18 V; made in Germany
Compatibility
- All OEM sound systems with a separate amplifier and a maximum output of up to 155 W
- For OEM systems without a factory amplifier, the standard HELIX AAC.3 is recommended
Technical Specifications
| Max. speaker input level | 25 Volts (= 155 Watts / 4 Ohms) |
| Input impedance | 13 Ohms |
| Max. output level | 4.0 Volts |
| Frequency response | 18 Hz – 80,000 Hz |
| Max. current for remote output | 200 mA |
| Operating voltage | 7 – 18 Volts |
| Dimensions (H x W x D) | 77 x 37 x 20 mm / 3.03 x 1.46 x 0.79″ |
Scope of Delivery
1 x Signal converter AAC.3
