Why Don’t All Drivers Move the Same on Our Tower Speakers?

Some customers notice that not all woofers on their Arendal Sound tower speakers, such as the 1723 Tower, 1723 Tower S, and 1961 Tower, move equally when playing music or watching movies. This is completely normal and exactly how these speakers are designed to work.

2.5-Way Design Explained

All of these models use a 2.5-way crossover design, not a 3-way design with a dedicated midrange driver. This means that:

• The upper two woofers, located around the tweeter, handle the entire midrange and bass range, everything from about 1,500 Hz down to the lowest frequencies.
  Because they reproduce a wider frequency range, you’ll naturally see more movement from these drivers.

• The lower woofers are dedicated to deep bass support, blending in only at lower crossover points:

  • ~120 Hz on the 1723 Tower and 1961 Tower

  • ~100 Hz on the 1723 Tower S

Since these woofers handle only the lowest bass frequencies, they move less under most listening conditions, especially at moderate volume or with music that doesn’t contain deep sub-bass content.

Everything Is Working as Intended

This difference in movement is a normal part of how a 2.5-way system functions. Each driver has a clearly defined role, working together to ensure smooth frequency response, excellent integration, and powerful low-end performance, without overlap or distortion.

So if you notice that the bottom drivers move less, rest assured, your speakers are performing exactly as they should.