DS18 EQX7 7-Band Car Equalizer with Auto Hi/Lo Converter, Dual Rear Inputs & 8V Outputs

Engineered for mobile audio enthusiasts and installers, the DS18 EQX7 lets you shape frequency response on the fly from inside your vehicle while providing clean line-level signals to amplifiers. It combines a seven-band EQ, an internal subwoofer crossover, gold-plated RCA connectors, and a built-in hi/lo converter so you can add amps to stock radios without extra converters. The EQX7’s small footprint fits most dash or under-seat locations while delivering high signal-to-noise performance and up to 8 volts output for stronger amplifier input levels.

How does the EQX7 improve sound clarity when installed with a factory radio?

The EQX7 converts speaker-level signals to line-level and corrects frequency imbalances that factory radios often leave unaddressed. By giving you seven adjustable bands and a dedicated sub output, you can reduce muddiness, tighten bass, and bring forward vocals and instruments.

• Auto hi/lo line selector for safe integration with factory outputs
• Seven bands (50Hz–16kHz) with ±12dB boost/cut and extended sub range
• Gold-plated RCA jacks for improved signal transfer and reduced corrosion
• 8V maximum output for better headroom into aftermarket amplifiers

What controls and crossover options are available on the EQX7?

The unit provides seven front-panel rotary controls tuned to common musical bands plus an internal electronic subwoofer crossover. Sub frequencies get extended adjustment and a fixed 18dB/octave slope available at two selectable crossover points to help you balance the low end without overlap or phase confusion.

• Seven frequency bands: 50Hz, 125Hz, 320Hz, 750Hz, 2.2kHz, 6kHz, 16kHz
• Subwoofer crossover fixed at 60Hz or 120Hz with an 18dB/octave slope
• Boost/cut range: up to ±12dB (expanded subwoofer range)
• Real-time, in-vehicle adjustment using top-mounted controls

Which technical specs affect installation and compatibility?

The EQX7 is designed to work across typical car electrical systems and match a wide range of aftermarket amplifiers. Its input and output impedances, low distortion, and wide frequency response make it suitable for both professional installs and DIY upgrades.

• Frequency response: 10Hz–50kHz ±1dB for full-range fidelity
• Maximum output voltage: 8V; signal-to-noise ratio: 100dB
• THD: 0.005% and stereo separation ~82dB @1kHz
• Operating voltage: 11–15V DC; compact dimensions: 7" x 4.40" x 1.18"

How does the EQX7 simplify adding amplifiers and subwoofers?

The built-in hi/lo converter automatically handles speaker-level inputs so you can feed amplifiers without extra adapters. The dedicated subwoofer output and selectable crossover let you route low frequencies cleanly to a sub amp while maintaining separate front and rear outputs for amp channels.

• Auto hi/lo selector eliminates the need for separate line converters
• Separate front, rear, and sub outputs at up to 8V for robust amplifier input levels
• Two rear inputs (Main and Aux) allow multi-source integration
• Low noise design preserves dynamic headroom for better amplifier response

Who is this for: The DS18 EQX7 is aimed at car audio enthusiasts, installers, and anyone upgrading a factory stereo to include aftermarket amplifiers and subwoofers. If you want hands-on tonal control from inside the vehicle, expect higher line-level output for driving amps, and prefer a compact, installer-friendly unit with built-in hi/lo conversion, the EQX7 is a practical choice.