dB Technologies ASX24

The dB Technologies ASX 24 is an analog active crossover that splits your mixer’s output into frequency bands for multi-amplified speaker systems. It works as a 2-way or 3-way stereo crossover or a 4-way mono crossover, with 24 dB/octave Linkwitz-Riley filters, per-band level, mute, and phase controls, output delay, a LOW SUM mono sub output, and a multiband limiter to protect your drivers.

Highlights

• 2-way or 3-way stereo, or 4-way mono operation
• 2 XLR inputs with switchable 25 Hz high-pass filter; 6 XLR outputs
• 24 dB/octave Linkwitz-Riley filters with selectable crossover frequencies
• Mute and phase reversal on each band
• Adjustable output delay up to 2 ms
• LOW SUM mono sub output and multiband limiter with adjustable threshold

dB Technologies ASX 24: Precise Frequency Division

Passive crossovers inside speaker cabinets waste amplifier power and offer no adjustment. An active crossover like the ASX 24 divides the signal before the amplifiers, so each amplifier channel drives only its own driver or speaker. The result is more efficient amplification, cleaner sound, and full control over where each band starts and stops.

The ASX 24’s Linkwitz-Riley filters sum flat at the crossover point, so the hand-off between subwoofers, mids, and highs is smooth with no dip or bump.

Flexible System Configuration

Run the ASX 24 as a stereo 2-way crossover for a pair of tops and subs, a stereo 3-way crossover for larger three-way systems, or a 4-way mono crossover for a single large rig. The LOW SUM function combines the low frequencies of the left and right channels into a single mono subwoofer output, which is common practice since bass is non-directional. The 25 Hz high-pass filter on the inputs removes subsonic energy that wastes amplifier power.

Setting Up the ASX 24

Connect your mixer’s main outputs to the ASX 24’s inputs and each output to the amplifier channel driving that band. Choose stereo or mono mode, select crossover frequencies based on your speakers’ recommended ranges, and set output levels to balance the bands. Use the delay to time-align drivers that sit at different distances from the audience, and set limiter thresholds to protect your speakers.

What to Pair With the ASX 24

Pair the ASX 24 with power amplifiers, passive subwoofers and full-range speakers, a rack case, and quality XLR cables. A measurement microphone helps you fine-tune crossover points and delay.

Choosing Crossover Points

A crossover point should sit comfortably within the operating range of both drivers it divides. For a sub and top system, 80-120 Hz is typical. In a three-way system, the mid/high crossover is usually set according to the compression driver’s recommended low limit. Always check your speakers’ specifications, and use the phase switches to confirm that bands sum correctly at the crossover point.

dB Technologies ASX 24 FAQ

Can it run a mono subwoofer from a stereo system? Yes. The LOW SUM function sends the combined low end of both channels to a mono sub output.

Does it protect my speakers? Yes. A multiband limiter with adjustable threshold helps prevent overload.

dB Technologies ASX 24 Specifications at a Glance

• Modes: 2-way / 3-way stereo, 4-way mono
• Inputs: 2 XLR with 25 Hz high-pass switch
• Outputs: 6 XLR
• Filters: 24 dB/octave Linkwitz-Riley
• Controls: in/out level, crossover frequency, mute, and phase per band
• Delay: up to 2 ms on outputs
• Protection: multiband limiter with adjustable threshold

Who Buys the dB Technologies ASX 24

• Bands running passive PA systems
• Rental and production companies
• Installers of multi-amped systems
• Clubs and venues

Why Buy the dB Technologies ASX 24 From Metro Sound & Lighting

Metro Sound & Lighting isn’t a catalog-only retailer. We design, install, and service sound systems in-house, so our team can help you configure your crossover and tune your PA, and support it after the sale. We offer B2B and integrator pricing for venues and production companies.

Browse more options in our Processors category, or see the full specifications on the official dB Technologies ASX 24 product page.