DBX 231S Graphic Equalizer

DBX 231S Graphic Equalizer

When the pros need an EQ, they turn to DBX 231s. With a proven track record that spans four decades, dbx® EQs are the industry standard for touring, studios, and audio installations. With the dbx heritage of revered pro EQs, the 231s meets the needs of the most demanding sound reinforcement environments, while offering the simplicity of straightforward controls.

The DBX 231s includes two 31-band channels of 1/3-octave equalization, ±12 dB input gain, switchable ±6 dB or ±12 dB boost/cut range, 20mm nonconductive sliders, an intuitive user interface, and output level metering. From its extended 10Hz to 50kHz frequency response and 112 dB dynamic range to the quality componentry and meticulous attention to detail, the 231s offers exceptional sound and rugged reliability that guarantees you will always sound your best.

Sure to find a home in the studio, on tour and with installed sound venues, the dbx 231s graphic equalizer is destined to take its rightful place in the lineage of great dbx signal processors that are the professional’s choice in signal processing. With such affordable quality, there’s no longer any excuse for compromising your sound.

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The dbx 231s is a dual 31-band graphic equalizer that has carved a niche for itself in the world of professional audio. Renowned for its exceptional sound quality, rugged build, and intuitive controls, the 231s finds applications in live sound reinforcement, recording studios, and installed sound systems. This comprehensive preview delves into the features, functionalities, and potential use cases of the dbx 231s, equipping you with the knowledge to decide if it’s the right tool for your sonic sculpting needs.

Legendary Lineage: A Legacy of dbx EQs

dbx is a brand synonymous with quality audio processing. Their graphic equalizers have been a mainstay in professional studios and live sound rigs for decades. The 231s builds upon this legacy, offering a feature set that caters to the demands of today’s discerning audio professionals.

Dual 31-Band Constant Q Architecture: Precise Control Over Your Sound

One of the hallmarks of the 231s is its dual 31-band, 1/3-octave constant Q equalization. This means you get independent control over 31 frequency bands spread out across the audible spectrum, spaced at 1/3-octave intervals. Constant Q filters are crucial for precise sound shaping because they maintain the bandwidth of each band regardless of boost or cut applied. This allows for targeted adjustments without affecting neighboring frequencies.

Switchable Boost/Cut Range: Tailoring the EQ to Your Needs

The 231s offers switchable boost/cut ranges of ±6 dB or ±12 dB. This flexibility empowers you to make subtle tonal adjustments (±6 dB) or more dramatic corrections (±12 dB) depending on the situation. For live sound applications, the ±12 dB range proves useful in combating room resonances or taming problematic microphone bleed. In the studio, the ±6 dB range allows for meticulous sculpting of individual instruments or entire mixes.

Intuitive User Interface: Shaping Your Sound with Ease

The dbx 231s boasts a user-friendly layout that facilitates intuitive control. The 31 detented sliders, each representing a specific frequency band, provide a tactile feel for making adjustments. Clear markings on the panel ensure you’re boosting or cutting the intended frequencies. Additionally, the unit features a bypass switch, allowing you to instantly A/B the equalized signal with the original for quick comparison.

Output Level Metering: Keeping an Eye on Levels

The 231s incorporates a 4-segment LED ladder for each channel, providing visual feedback on the output level. This helps you maintain optimal signal levels and avoid clipping, which can introduce unwanted distortion into your audio.

Connectivity Options: Balanced and Unbalanced I/O

The 231s provides versatility in terms of connectivity. It features both XLR and TRS connectors for both inputs and outputs. This caters to professional audio environments where balanced connections are preferred for better noise rejection, especially over longer cable runs. Additionally, the TRS connectors offer compatibility with unbalanced consumer-grade equipment.

• Frequency response: < 10Hz to > 50kHz
• Dynamic range: > 108 dB
• Input gain range: ±12 dB
• Maximum input level: > +21 dBu balanced or unbalanced
• Maximum output level: > +21 dBu balanced/unbalanced into 2k ohm or greater; > +18dBm balanced/unbalanced (into 600 ohm)

Applications: Where the dbx 231s Shines

The dbx 231s finds application in a diverse range of audio production scenarios. Here are some of its common uses:

• Live Sound Reinforcement: In live sound environments, the 231s is a valuable tool for combating room acoustics, taming feedback, and shaping the overall tonal balance of the PA system.
• Studio Recording: Recording studios can utilize the 231s for corrective EQ during tracking, shaping individual instruments or entire mixes during mixdown.
• Installed Sound Systems: The 231s can optimize the sound in restaurants, bars, houses of worship, and other installed sound applications by addressing room acoustics and tailoring the sound to the specific space.

While the core functionality revolves around graphic equalization, the dbx 231s offers some additional features worth mentioning:

• Rugged Construction: Built to withstand the rigors of professional use, the 231s features a steel chassis and high-quality components, ensuring longevity in demanding environments.
• Low Noise Design: The dbx 231s boasts a low-noise

• Front Panel Bypass Switch: A handy bypass switch allows you to instantly compare the processed signal with the unprocessed one. This A/B comparison function helps assess the impact of the EQ adjustments on the overall sound. By engaging the bypass switch, you can listen to the unprocessed signal and then switch it back to the processed signal to hear the difference the EQ is making. This is a crucial feature for making informed decisions about your EQ settings and ensuring they are enhancing rather than detracting from the sound.
• Rugged Build Quality: The dbx 231s is housed in a robust steel chassis, ensuring it can withstand the rigors of professional use on stage or in the studio. The metal construction safeguards the internal components from physical damage during transport and setup, while the durable knobs and sliders can handle frequent adjustments without compromising functionality. This focus on build quality makes the 231s a reliable investment for long-term use in demanding environments.

• Wide Range of Applications: The dbx 231s’ versatility extends beyond live sound reinforcement and studio recording. Here are some additional applications:
  • Broadcast Applications: In radio and television broadcasting, the 231s can be used to maintain consistent sound quality across various sources, ensuring a professional and polished audio presentation for listeners.
  • DJ Equipment: DJs can leverage the 231s to shape the tonal characteristics of their mixes, emphasizing specific elements or creating smooth transitions between tracks.
  • Home Audio Systems: Audiophiles can utilize the 231s to fine-tune their home listening experience. By correcting for room acoustics or tailoring the sound signature to their preferences, listeners can achieve a more enjoyable and immersive audio experience.
• Internal Ground Lift Switch: The 231s features an internal ground lift switch that helps to eliminate ground loop hum, a common issue in audio systems that can manifest as unwanted low-frequency noise. By lifting the ground connection between the unit and other equipment, ground loops can be effectively mitigated, ensuring a cleaner and quieter audio signal.

• Low Noise Operation: The dbx 231s boasts an exceptional signal-to-noise ratio, minimizing any unwanted noise introduced by the unit itself. This ensures that the audio passing through the equalizer remains transparent and free from coloration, preserving the integrity of the source material.

In Conclusion:

The dbx 231s stands as a testament to reliable performance, intuitive design, and exceptional audio quality. Its comprehensive feature set, encompassing wide-ranging equalizers, multiple boost/cut options, and robust construction, make it a versatile tool for professional audio applications. Whether you are a live sound engineer, recording studio owner, musician, or audiophile, the dbx 231s offers a powerful and affordable solution for shaping and sculpting your sound. With its user-friendly layout and extensive functionality, the 231s empowers you to achieve your sonic goals with precision and confidence. By carefully considering your specific needs and budget, you can determine if the dbx 231s is the ideal equalizer to elevate your audio productions to the next level.