Autotek ATK2 3X Active Crossover Processor

The Autotek ATK2 3X Active Crossover Processor is a compact in-car signal processor that gives you adjustable 2-way or 3-way crossover control, level matching, phase switching and remote bass gain for cleaner, more controllable sound.

Designed for multi-amplifier systems, the ATK2 helps you shape the audio signal before it reaches your amplifiers so each speaker receives the correct frequencies and level. It’s a silver-finished, hard-mounted unit that offers built-in low-pass/high-pass filters, level adjustment, and a 180° phase switch — plus a wired remote control for easy bass level trim from the driver’s seat. This processor is aimed at installers and enthusiasts who want greater control over crossover points and subwoofer integration without adding complexity.

How does the ATK2 improve system integration?

The ATK2 sits between your head unit and amplifiers to align frequency bands and levels, reducing overlap and frequency gaps. By handing frequency division and level matching to the processor, amplifiers and speakers operate more efficiently and with less distortion.

• Selectable 2-way or 3-way crossover routing for multiple amp setups
• Built-in low-pass and high-pass filters to isolate subs, mids, and highs
• Level adjust for each channel to balance output before amplification
• Phase switch to correct subwoofer timing with main speakers

What controls and features are included on the unit?

The ATK2 provides straightforward, tactile controls for frequency selection and level trimming, plus a hard-wired remote for sub level. Its simple switches and pots make setup fast for experienced installers and flexible for tuning on the fly.

• Frequency pots for defining crossover points
• Individual channel level controls to match preamp outputs
• 180° phase switch for subwoofer timing alignment
• Wired remote bass control included for driver adjustment

How do I use the remote bass control during tuning?

The included wired remote lets you adjust subwoofer level from the cabin, so you can fine-tune bass balance while listening in real time. This is useful for adapting bass to different music styles or passenger load without returning to the install location.

• Mount remote near driver for convenient access
• Use remote to increase or decrease sub level during listening tests
• Combine with the on-unit level control for broad-to-fine adjustments
• Helps dial bass while minimizing distortion and clipping risks

What physical and electrical specs matter for installation?

The ATK2 runs at an 8.5-volt input reference and mounts in vehicles with space behind the dash or within trunks. Its silver housing is compact for easy placement and its signal-level controls are accessible for installers who need repeatable settings.

• 8.5 volts nominal operating level for compatibility with most head units
• Compact silver chassis for flexible mounting locations
• Rugged control knobs and switches for reliable adjustment
• Wired remote connector and clear input/output terminals for tidy installs

Who this product is for: The Autotek ATK2 is intended for car audio enthusiasts, DIY installers, and professional installers building multi-amplifier systems who want precise crossover control and easy sub adjustment. If you’re integrating separate amplifiers for subs, mids, and highs and need a compact processor to set crossover points, match levels, and correct phase, the ATK2 offers a practical, cost-effective solution with driver-accessible bass control.