AudioControl EQL 13-Band 2-Channel Trunk-Mount Equalizer

Take Complete Control of Your Car Audio Sound

Want deeper, cleaner bass, more detailed vocals, and greater control over your car audio system?

The AudioControl EQL 13-Band 2-Channel Trunk-Mount Equalizer is a premium analog car audio sound processor designed to help you fine-tune your vehicle's audio system for improved clarity, balanced frequency response, and precise bass control.

Featuring 13 bands of stereo equalization, six dedicated half-octave bass bands, seven full-octave frequency bands, speaker-level and RCA inputs, balanced input circuitry, and a Programmable Frequency Match (PFM) subsonic filter, the AudioControl EQL provides advanced sound tuning without requiring a complicated digital interface.

Whether you're upgrading your factory stereo, installing aftermarket amplifiers, or building a custom sound system in your truck, car, or SUV, the AudioControl EQL gives you precise control over the frequencies that matter most.

Buy the AudioControl EQL at East Car Audio — your destination for car audio equalizers, amplifiers, subwoofers, and high-performance sound system upgrades.

Key Features of the AudioControl EQL

1. 13-Band Stereo Equalizer for Precise Sound Adjustment

The AudioControl EQL provides 13 bands of equalization for both left and right audio channels.

Unlike basic car stereo equalizers with only a few adjustment bands, the EQL offers more detailed frequency control to help compensate for your vehicle's interior acoustics and speaker response.

Adjust bass, midrange, and treble frequencies to achieve a more balanced listening experience.

2. Six Dedicated Half-Octave Bass Equalizer Bands

Bass is one of the most difficult parts of a car audio system to tune correctly.

Vehicle interiors can naturally exaggerate certain bass frequencies while reducing others.

The AudioControl EQL includes six dedicated bass equalizer bands:

• 31.5 Hz

• 45 Hz

• 63 Hz

• 90 Hz

• 125 Hz

• 180 Hz

These adjustments allow you to fine-tune the low-frequency response of your system.

Whether you're running a single subwoofer, dual 10-inch subwoofers, dual 12-inch subwoofers, or a high-output SPL system, the EQL can help shape the bass signal sent to your amplifiers.

3. Seven Full-Octave Midrange and Treble Bands

In addition to bass adjustment, the AudioControl EQL features seven full-octave frequency bands:

• 250 Hz

• 500 Hz

• 1 kHz

• 2 kHz

• 4 kHz

• 8 kHz

• 16 kHz

These controls help you adjust:

• Vocal clarity

• Midrange balance

• Instrument detail

• High-frequency brightness

• Overall tonal balance

The result is greater flexibility when tuning aftermarket door speakers, component speaker systems, and other compatible audio setups.

4. Programmable Frequency Match (PFM) Subsonic Filter

The AudioControl EQL includes a Programmable Frequency Match subsonic filter.

This feature helps reduce unwanted very-low-frequency signals that can cause excessive subwoofer movement.

The PFM filter is especially useful for properly configured ported subwoofer systems, where frequencies below the enclosure's tuning range can place unnecessary stress on the subwoofer.

Benefits include:

• Adjustable low-frequency filtering

• Better control of subsonic frequencies

• Reduced unnecessary cone movement

• Improved system tuning flexibility

• Protection against some excessive low-frequency content when correctly configured

The correct filter setting depends on your subwoofer enclosure and system design.

5. Factory Radio and Aftermarket Stereo Compatibility

The AudioControl EQL accepts both speaker-level and preamplifier-level signals.

This means it can be integrated into many factory radio and aftermarket head unit installations.

Speaker-Level Inputs: Connect to compatible speaker output signals when RCA outputs are unavailable.

RCA Inputs: Connect directly to a compatible aftermarket head unit or audio processor.

This flexibility makes the EQL a practical solution for many custom car audio builds.

6. High-Voltage RCA Output — Up to 7.5 Volts RMS

The AudioControl EQL provides up to 7.5 Vrms output, allowing it to deliver a strong preamplifier signal to compatible aftermarket amplifiers.

Its input and output level-matching controls help installers optimize signal levels throughout the audio system.

Proper adjustment can improve signal utilization and help avoid unnecessary distortion.

7. Balanced Inputs for Noise Rejection

The AudioControl EQL features balanced differential input circuitry designed to reduce unwanted electrical noise.

This is particularly useful in vehicles with complex electrical systems or long signal cable runs.

8. Trunk-Mount Design for Custom Installations

The EQL is designed for installation in a suitable location away from the dashboard.

Possible installation locations include:

• Trunk amplifier racks

• Custom amplifier mounting panels

• Behind interior trim panels

• Suitable under-seat equipment locations

• Custom car audio equipment compartments

Its compact design allows the equalizer to be integrated into an organized audio system while keeping its adjustment controls accessible for tuning.

Perfect for Custom Car Audio Systems

The AudioControl EQL is an excellent choice for customers who want to:

• Fine-tune aftermarket subwoofers.

• Improve frequency balance in a factory stereo upgrade.

• Add equalization to a two-channel audio signal.

• Adjust bass response in custom truck audio installations.

• Integrate a compatible factory radio with an aftermarket amplifier.

• Improve sound tuning without using a computer-based DSP.

• Build a custom amplifier rack with dedicated audio processing.

Popular Vehicle Applications

The AudioControl EQL can be used in properly designed audio systems for vehicles such as:

• Chevrolet Silverado

• GMC Sierra

• Ford F-150, F-250, and F-350

• RAM 1500, 2500, and 3500

• Chevrolet Tahoe and Suburban

• GMC Yukon

• Toyota Tacoma and Tundra

• Many other cars, trucks, and SUVs

Important: The EQL is a universal audio processor, not a vehicle-specific plug-and-play harness. Installation compatibility depends on your stereo, signal levels, amplifiers, and wiring configuration.

AudioControl EQL Technical Specifications

Specification	Details
Brand	AudioControl
Model	EQL
Product Type	2-Channel Trunk-Mount Equalizer
Equalizer Bands	13 per channel
Bass Equalizer	6 Half-Octave Bands
Midrange/Treble Equalizer	7 Full-Octave Bands
Preamp Inputs	2 Channels
Speaker-Level Inputs	2 Channels
Preamp Outputs	2 Channels
Maximum Output Voltage	7.5 Vrms
Input Gain Adjustment	±18 dB
Frequency Response	10 Hz–100 kHz
Total Harmonic Distortion	0.003%
Signal-to-Noise Ratio	110 dB
Input Circuitry	Balanced
Subsonic Filter	Programmable Frequency Match (PFM)
Recommended Fuse	2A
Dimensions	8.9" W × 6.9" D × 1.25" H
Weight	2.7 lbs

Why Choose a 13-Band Equalizer Instead of a Basic Bass Booster?

A traditional bass booster primarily increases low-frequency output.

The AudioControl EQL offers significantly more detailed control by allowing you to adjust specific frequency ranges across the audible spectrum.

Instead of simply increasing all bass frequencies, you can target problem areas in your audio system.

For example:

• Reduce excessive mid-bass around 125 Hz.

• Adjust lower bass response around 45 Hz.

• Improve vocal presence around 2 kHz.

• Reduce overly bright treble around 8 kHz.

This flexibility makes the EQL useful for customers who care about sound quality, musical detail, and proper system tuning.

What's Included?

Manufacturer-listed package contents:

• AudioControl EQL equalizer

• Power and speaker connector

• Owner's manual

• Warranty documentation

Package contents may vary by actual item condition and remaining manufacturer stock.

Why Buy the AudioControl EQL From East Car Audio?

At East Car Audio, we specialize in aftermarket car audio equipment designed to help customers build better sound systems.

From everyday factory stereo upgrades to custom high-output subwoofer installations, our store offers products for serious car audio enthusiasts.

Shop East Car Audio for:

• AudioControl equalizers and sound processors

• Car audio amplifiers

• Subwoofers and speaker systems

• Custom truck subwoofer boxes

• Amplifier installation accessories

• Factory stereo integration equipment

• Car audio wiring and installation components

We strive to make East Car Audio the best place to buy the AudioControl EQL online, with detailed product information, convenient online ordering, and a product selection dedicated to automotive sound.

When you're ready to take control of your car audio system, choose East Car Audio for your next upgrade.

Order the AudioControl EQL 13-Band 2-Channel Trunk-Mount Equalizer from East Car Audio today.

Shop the East Car Audio equalizer collection:

https://www.eastcaraudio.net/collections/equalizers-1

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Frequently Asked Questions

What does the AudioControl EQL do?

The AudioControl EQL is a 13-band stereo equalizer that allows you to adjust specific audio frequencies before sending the signal to your aftermarket amplifier.

Is the AudioControl EQL good for bass?

Yes. Its six dedicated half-octave bass bands provide detailed low-frequency tuning, while its programmable PFM filter helps manage unwanted subsonic frequencies.

Can I use the AudioControl EQL with my factory radio?

Yes, in compatible installations. The EQL supports speaker-level inputs, allowing it to receive audio signals from many factory stereo systems.

Does the AudioControl EQL have RCA inputs and outputs?

Yes. It includes stereo RCA inputs and outputs for connection to compatible car audio equipment.

Is the AudioControl EQL a digital signal processor?

No. The EQL is an analog equalizer and level-matching processor. It does not provide the computer-controlled tuning features of a modern DSP.

Does the EQL include a crossover?

The EQL includes a programmable subsonic filter, but it is not a full multiway crossover. Additional crossover functionality may be required depending on your audio system.

Can I use it with multiple amplifiers?

Yes, with appropriate signal distribution and system design. However, the EQL itself provides only one stereo pair of preamp outputs.

Is the AudioControl EQL discontinued?

Yes. AudioControl identifies the EQL as a discontinued model. Availability depends on remaining stock or other inventory.

Where is the best place to buy the AudioControl EQL?

East Car Audio is a dedicated destination for the AudioControl EQL and other car audio equalizers, amplifiers, and installation accessories. Shop at EastCarAudio.net.