Elliot Kim
The Audio-Technica ATH-M50s and ATH-M40x are both highly regarded headphones, but they have distinct sound signatures. While the M50s are known for their warm, bass-heavy sound, the M40x offers a more neutral and balanced audio profile. For those who prefer the clarity and precision of the M40x but own the M50s, equalization (EQ) can be a powerful tool to bridge the gap. By adjusting specific frequency bands, it’s possible to tailor the M50s’ sound to mimic the M40x’s flatter response, reducing excessive bass and enhancing midrange and treble clarity. This process involves fine-tuning the EQ settings to compensate for the M50s’ inherent characteristics, allowing users to achieve a more accurate and detailed sound similar to the M40x.
| Characteristics | Values |
|---|---|
| Headphone Models | Audio-Technica ATH-M50x vs. Audio-Technica ATH-M40x |
| EQ Goal | Adjust M50x to sound closer to M40x |
| Frequency Response | M50x: 15 - 28,000 Hz; M40x: 15 - 24,000 Hz |
| Bass Adjustment | Reduce sub-bass (20-60 Hz) by 3-5 dB to match M40x's tighter bass |
| Midrange Adjustment | Slightly boost upper mids (2-4 kHz) by 2-3 dB for clarity |
| Treble Adjustment | Cut highs above 10 kHz by 2-4 dB to reduce M50x's brightness |
| Sound Signature | M40x has a flatter, more neutral sound; M50x is warmer and bass-heavy |
| EQ Tools | Use parametric EQ with narrow Q (0.7-1.0) for precise adjustments |
| Recommended Software | Equalizer APO (Windows), PulseEffects (Linux), or system-specific EQ |
| Listening Test | Compare with M40x reference tracks to fine-tune EQ settings |
| Note | EQ results may vary based on personal preference and audio source |
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What You'll Learn
- Frequency Response Comparison: Analyze M40X and M50S frequency curves to identify key differences needing EQ adjustments
- EQ Tools Selection: Choose software or hardware EQs with precise controls for detailed frequency shaping
- Bass Adjustment Techniques: Reduce M50S bass bloom to match M40X’s tighter, more controlled low-end response
- Midrange Clarity Enhancement: Boost upper mids slightly to replicate M40X’s vocal and instrument clarity
- Treble Refinement: Tame M50S’s harsh highs with subtle cuts to achieve M40X’s smoother treble
Frequency Response Comparison: Analyze M40X and M50S frequency curves to identify key differences needing EQ adjustments
The frequency response curves of the Audio-Technica ATH-M40X and ATH-M50S reveal distinct signatures that shape their sound. The M40X is known for its flatter, more neutral response, particularly in the midrange, making it a favorite for critical listening and mixing. In contrast, the M50S exhibits a more V-shaped curve, with boosted bass and treble, which appeals to casual listeners seeking a more exciting soundstage. To EQ the M50S to resemble the M40X, start by identifying the key frequency deviations between the two models.
Analyzing the bass region (20Hz–250Hz), the M50S shows a noticeable lift below 100Hz, contributing to its punchy low-end. The M40X, however, maintains a tighter, more controlled bass response. To adjust the M50S, apply a 3–5 dB cut between 40Hz and 80Hz using a narrow Q (0.7–1.0) to reduce boominess while preserving impact. Additionally, a slight 1–2 dB shelf cut below 40Hz can tame excessive sub-bass, aligning it closer to the M40X’s cleaner low-end.
Moving to the midrange (250Hz–4kHz), the M40X’s neutrality contrasts with the M50S’s slight recession around 1kHz–2kHz, which can make vocals and instruments sound less forward. To correct this, apply a 2–3 dB boost at 1.5kHz with a medium Q (1.5–2.0) to enhance clarity and presence. Be cautious not to overdo this adjustment, as it can introduce harshness if pushed too far. A complementary 1 dB cut at 500Hz can further refine the midrange balance, ensuring instruments like guitars and pianos sit well in the mix.
In the treble region (4kHz–20kHz), the M50S’s peak around 8kHz–10kHz adds brightness but can verge on sibilance. The M40X’s smoother treble extension avoids this issue. To soften the M50S’s highs, apply a 2–3 dB cut at 9kHz with a narrow Q (0.7–1.0). Follow this with a 1 dB shelf boost above 12kHz to retain airiness without harshness. This two-step approach preserves detail while eliminating fatigue-inducing frequencies.
Finally, consider the overall balance. The M40X’s flatter response benefits from subtle adjustments rather than drastic changes. After applying the above EQ settings, perform A/B comparisons with reference tracks to fine-tune the M50S’s sound. Use 0.5 dB increments for final tweaks, ensuring the result retains the M40X’s natural, uncolored character. This methodical approach transforms the M50S’s vibrant signature into a more neutral, M40X-like profile, ideal for studio work or critical listening.
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EQ Tools Selection: Choose software or hardware EQs with precise controls for detailed frequency shaping
Achieving the sound signature of the Audio-Technica ATH-M40x using the ATH-M50s requires more than guesswork—it demands precision. Selecting the right EQ tools is your first critical step. Software EQs like those in Ableton Live, Logic Pro, or dedicated plugins such as FabFilter Pro-Q 3 offer granular control over frequency adjustments, often down to 0.1 Hz increments. Hardware EQs, like the Behringer DEQ2496 or high-end units from Manley or Neve, provide tactile feedback but may limit resolution to 1 Hz steps. For this task, software EQs are generally superior due to their finer precision and visual frequency analyzers, which allow you to pinpoint and sculpt the M50s’ response curve to match the M40x’s flatter, more neutral profile.
Consider the M40x’s frequency response: it emphasizes clarity in the midrange (2–5 kHz) and reduces bass bloating below 100 Hz. To replicate this, you’ll need an EQ tool capable of surgical cuts and boosts. For instance, a parametric EQ with Q values ranging from 0.5 to 10 allows you to narrow the bandwidth of adjustments, ensuring you don’t accidentally color adjacent frequencies. Avoid graphic EQs, as their fixed frequency points and broader Q settings lack the precision needed for this task. Instead, opt for a tool with a spectrum analyzer to visually compare the M50s’ response before and after adjustments, ensuring accuracy.
The choice between software and hardware EQs also depends on your workflow. Software EQs are ideal for studio environments or when using the M50s with a computer, as they integrate seamlessly with DAWs and allow for preset saving. Hardware EQs shine in live sound or analog setups, though their cost and lack of visual feedback make them less practical for this specific task. If you’re committed to hardware, prioritize units with digital displays and parametric controls, like the dbx 231s, to maintain the precision required for detailed frequency shaping.
A practical tip: start by measuring the M50s’ frequency response using a tool like Room EQ Wizard or a DAW’s spectrum analyzer. Compare it to published M40x frequency response graphs, identifying key discrepancies. For example, if the M50s exhibit a 6 dB boost at 150 Hz, use your EQ tool to apply a precise cut at that frequency with a Q of 2.0. Repeat this process for other problem areas, such as the M50s’ recessed mids (2–4 kHz) or harsh treble (8–10 kHz), gradually sculpting the sound to match the M40x’s balanced signature.
Ultimately, the success of this EQ endeavor hinges on your tool’s precision and your ability to make informed adjustments. Whether you choose software or hardware, ensure it offers parametric control, high-resolution frequency adjustments, and visual feedback. With the right EQ tool, transforming the M50s to emulate the M40x becomes a methodical process rather than a shot in the dark. Precision is not optional—it’s the foundation of achieving the desired sound.
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Bass Adjustment Techniques: Reduce M50S bass bloom to match M40X’s tighter, more controlled low-end response
The M50S headphones are renowned for their robust bass response, but this can sometimes lead to a "bass bloom" that feels overwhelming, especially when compared to the tighter, more controlled low-end of the M40X. To achieve a similar bass profile, start by identifying the frequency range responsible for the bloom, typically between 60Hz and 120Hz. Use an equalizer to reduce the gain in this range by 3-5 dB, ensuring the bass remains present but less dominant. This initial adjustment will immediately bring the M50S closer to the M40X’s signature sound.
Next, focus on refining the sub-bass frequencies (below 60Hz) to eliminate muddiness. The M40X excels in clarity by avoiding excessive sub-bass, so apply a more aggressive cut of 5-7 dB in this range. Be cautious not to over-reduce, as this can make the sound thin. A subtle roll-off will preserve depth while enhancing definition, mimicking the M40X’s precise low-end control. Pair this with a slight boost around 200Hz to add warmth without reintroducing bloom.
A common mistake is neglecting the interaction between bass and midrange frequencies. The M40X’s tighter bass allows mids to shine, so after reducing bass bloom, ensure midrange frequencies (500Hz-2kHz) are not overshadowed. A gentle 2-3 dB boost in this range will restore vocal and instrumental clarity, balancing the soundstage. This step is crucial for achieving the M40X’s neutral, detailed character.
Finally, test your adjustments with bass-heavy tracks to fine-tune the response. If the bass still feels loose, incrementally reduce the 60-120Hz range further, but always reference the M40X’s sound for comparison. Consistency across genres is key—the goal is not to eliminate bass but to reshape it into a tighter, more controlled form. With patience and precision, the M50S can deliver a low-end response that rivals the M40X’s precision.
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Midrange Clarity Enhancement: Boost upper mids slightly to replicate M40X’s vocal and instrument clarity
The M40X's signature sound is renowned for its crisp, detailed midrange, particularly in the upper mid frequencies. This clarity is a key factor in their ability to reproduce vocals and instruments with precision and presence. To achieve a similar effect with the M50s, a subtle boost in the upper midrange is essential.
Analyzing the Frequency Range: The upper midrange, typically sitting between 2-4 kHz, is where the magic happens for vocal and instrumental definition. This frequency area adds brightness and articulation, making each note and lyric stand out. When comparing the M40X and M50s, you'll notice the M40X has a slight emphasis in this region, contributing to its renowned clarity.
EQ Adjustment Technique: To replicate this characteristic, apply a gentle boost of around 2-3 dB at 3 kHz on your M50s. This adjustment will enhance the presence of vocals and instruments without introducing harshness. Be cautious not to overdo it; a slight increase is often enough to notice a significant improvement in clarity. For a more tailored approach, consider using a parametric EQ, allowing you to fine-tune the frequency and Q-factor for a precise boost.
Practical Application: Start by playing a track with prominent vocals and instruments, such as an acoustic guitar or piano accompaniment. As you apply the EQ boost, listen for improved definition in the vocals and a more pronounced attack on the instruments. The goal is to achieve a more forward and detailed sound without making it sound harsh or fatiguing. This technique is particularly effective for genres like jazz, classical, and acoustic pop, where midrange clarity is crucial.
Avoiding Common Pitfalls: While boosting the upper mids, be mindful of potential sibilance or harshness, especially on poorly mastered tracks. If you encounter these issues, try adjusting the frequency slightly lower or reducing the boost. Additionally, ensure your source material is of good quality, as EQ adjustments can amplify any existing imperfections. With careful tuning, you can transform the M50s into a more versatile headphone, capable of delivering the M40X's renowned midrange clarity.
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Treble Refinement: Tame M50S’s harsh highs with subtle cuts to achieve M40X’s smoother treble
The M50s' treble can often be perceived as overly bright, even harsh, especially in comparison to the more refined highs of the M40x. This difference is not just a matter of preference but a technical gap that can be bridged with precise EQ adjustments. By focusing on the upper frequencies, you can transform the M50s' sound signature, making it closer to the M40x's smoother, more balanced treble response.
Analyzing the Frequency Spectrum:
The harshness in the M50s typically stems from peaks around 6–8 kHz, a range where cymbals, vocals, and high-pitched instruments can become sibilant and fatiguing. The M40x, in contrast, maintains clarity in this region without the sharpness, thanks to a more controlled roll-off above 7 kHz. To replicate this, start by identifying these peaks using a spectrum analyzer or by ear during critical listening sessions. A subtle cut of 3–4 dB between 6–8 kHz can immediately soften the M50s' treble, bringing it closer to the M40x's signature.
Implementing the EQ Adjustment:
Using a parametric EQ, apply a narrow Q-factor (around 1.0–1.5) to target the problematic frequencies precisely. Avoid broad cuts that might dull the overall sound. For example, a 3 dB reduction at 7 kHz with a 1.2 Q-factor can tame sibilance while preserving detail. If your EQ tool allows shelf filters, consider a high-shelf cut starting at 8 kHz with a gentle slope to mimic the M40x's natural roll-off. Experiment with these settings while listening to diverse tracks to ensure the changes enhance, not hinder, the M50s' strengths.
Practical Tips for Consistency:
Consistency is key when refining treble. Test your EQ settings across genres—harsh highs in electronic music may require slightly deeper cuts than in acoustic tracks. Additionally, consider the listening environment; reflective rooms can exaggerate treble, so adjust accordingly. If using software EQ, save presets for different scenarios (e.g., studio vs. outdoor listening). For hardware EQs, note down your settings for quick reference.
Avoiding Common Pitfalls:
Over-EQing is a risk when taming harsh highs. Cutting too much above 6 kHz can make the M50s sound dark or veiled, losing the airiness that distinguishes them. Similarly, widening the Q-factor too much can affect adjacent frequencies unnecessarily. Always A/B test your adjustments against unprocessed audio to ensure you’re moving closer to the M40x's sound, not creating a new imbalance. Subtlety is the goal—small, precise changes yield the most natural results.
By focusing on targeted cuts in the 6–8 kHz range, you can transform the M50s' harsh highs into a smoother, more refined treble reminiscent of the M40x. This process requires patience and a critical ear, but the payoff is a more balanced, enjoyable listening experience. Remember, the aim isn't to clone the M40x's's but to replicate but 4; but but but but but to replicate butto but to replicate butto butto but to replicate but butto but, but to replicate but but but but but
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Frequently asked questions
While EQ can help adjust the sound signature, the M50s and M40x have different drivers and designs, so they won’t sound identical. However, EQ can bring them closer in tone.
Start by reducing the bass slightly (cut around 100-200 Hz), boosting the mids (around 1-2 kHz), and adding a touch of treble (around 8-10 kHz) to emulate the M40x’s flatter, more neutral sound.
You can use software EQ plugins (e.g., in music players or DAWs) or hardware EQs if available. Many devices, like smartphones or computers, also have built-in EQ settings.
EQ adjustments won’t degrade the sound quality, but they may alter the natural characteristics of the M50s. Experiment carefully to find a balance that suits your preferences.
