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LFS Attenuating Low Frequencies

Attenuating low frequencies is what we do best here at LFS. You can contact us here for more details. Our techniques include:

  • Noise Insulation
  • Bass Trapping
  • Loudspeaker Placement
  • Seating & Listening Positions
  • First Reflection Points
  • Rear Of Room Treatment

Why Acoustic Treatment Matters

Great sound starts with the room you’re in.

Whether you’re mixing a track, enjoying high-end audio, or building a home studio, your room plays a critical role in how your system actually sounds. You might have top-tier equipment, but without proper acoustic treatment, you’re not hearing its full potential.

Most people focus on controlling mid and high frequencies with foam panels or diffusers. But the biggest problem lies deeper in the low frequencies. These long, slow waves bounce around your room, causing muddy bass, unpredictable booms, and confusing mixes.

At LFS, we help you identify and tame those problem frequencies to create a space that sounds clear, accurate, and balanced from top to bottom.

Why Low Frequencies Matter

Low frequencies have the longest reverberation times and are least affected by simple foam treatments. Without addressing them, your audio will remain unbalanced, boomy in some spots, weak in others.

Traditional “bass traps” like thick foam or Rockwool help, but typically only above 80 Hz. To treat problem frequencies below that range, more advanced solutions like Helmholtz resonators, panel traps, and quarter-wave absorbers are often necessary.

Understanding Room Modes

Every room has resonant frequencies based on its dimensions. These can boost or cancel bass depending on your position. While EQ can help fix boosts, it can’t fix cancellations caused by destructive interference.

Larger rooms naturally spread out these modes, making the bass smoother. Smaller rooms are not so forgiving.

Designing for great sound often means using non-parallel walls and avoiding room dimensions that are multiples of each other. But for most people converting an existing space, intelligent acoustic treatment makes all the difference.

What You Can Do: Acoustic Treatment Essentials

Here are some key principles and practical tips for improving your room acoustics:

🔇 Noise Insulation

Prevent sound from leaking in or out.

  • Seal gaps around doors, windows, and vents as they are usually the weakest points.

  • Use dense materials like brick or dedicated soundboard such as Soundbloc for walls.

  • Float your walls by avoiding direct contact between layers. Use Rockwool and staggered studs to reduce vibration transmission.

🎛️ Bass Trapping

Start here. Bass is the hardest to control.

  • Install thick foam or Rockwool traps in all room corners.

  • Treating the bass results in less boom, better clarity, and less noise breakout.

  • Aim to target frequencies from 30 to 80 Hz using a mix of passive traps and tuned resonators for best results.

🔊 Loudspeaker Placement

Speaker location affects sound quality.

  • Avoid placing speakers in corners, as they excite all room modes.

  • Start by placing the front of your speaker at about one-fifth of the room length from the front wall.

  • Pay attention to port locations, which output lower frequencies. The distance from ports or drivers to room boundaries can amplify boom if not positioned carefully.

🎧 Seating Position

Where you sit affects what you hear.

  • Sitting at the back results in a bass boost.

  • Sitting in the middle may cause a bass null.

  • A good starting point is 37 percent from the rear wall. Adjust based on what you hear.

🪞 First Reflection Points

Reduce smearing and improve stereo image.

  • Use a mirror to find reflection points on side walls. Where you see the speaker, place acoustic treatment.

  • Apply 50 mm foam, diffusers, or both to side walls, ceiling, and floor near speakers.

🪵 Rear Wall Treatment

Do not neglect the back of the room.

  • Add diffusers at head height to scatter reflections and create a more open sound.

  • Use heavy curtains or soft furnishings to reduce reflections and hide bass traps behind them if needed.

Build Your Own and Save on Costs

You do not have to spend a fortune to get professional results.

  • Acoustic panels sold online can cost £200 for four, but DIY versions can be made for as little as £30 in materials.

  • For foam, as long as it is open cell, fire-resistant, and between 15 and 40 kg per cubic metre in density, you can often buy from general suppliers at a lower cost.

Want a Bespoke Solution?

Every room is different. Materials, shape, and layout all affect the sound. That is why a custom acoustic analysis can offer dramatically better results than guesswork.

Whether you are setting up a studio, home theater, or dedicated listening room, LFS can provide personalized guidance to help you achieve your best sound.

Contact us now to schedule a consultation or learn more.

Contact Us

If you’d like to get in touch with us with any questions or requests, please don’t hesitate to use the contact form, or via:

☎️ Phone: +44 (0) 7803 610 825

📧 Email: tim@lowfrequencysolutions.co.uk

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