Q Acoustics Q SUB120 Active 12" Subwoofer

Q Acoustics Q SUB120 no matter if it’s a stereo set-up or full-on surround-sound cinema system, the Q SUB120 can fill your listening room with that infra-bass Low Frequency Effect you can feel as well as hear. Big room with big speakers? No problem…

Features:

• Q SUB120 have exceptional bass power to cabinet size ratio.
• Digital Signal Processing (DSP) allows easy system and room integration with optimise settings for class-leading, distortion-free performance.
• Clever, dual phase and delay controls allow the fine-tuning of the signal alignments for flexible room placement.
• DSP identifies the input signal and automatically adjusts system gain, enhancing performance regardless of the connected source.
• A low pass filter with frequency adjustment ensures seamlessly integration with any partnering speaker system.
• A custom-designed amplifier module features four digital power amplifier stages that improves efficiency by dissipating less heat, enhances speaker control, and reduces output impedance.

Introducing Q SUB series

Whether as part of a Q Acoustics home cinema set-up, adding effortless bass extension to your existing 7.2, 5.1 or 2.1 system or intensifying the low end on your powered/active speakers, these new subwoofer models will deliver the dramatic to movies and music.

Meet the Q SUB family

Whatever the size of your home cinema room or the power of your system, Q Acoustics has the right-sized model to fill your space with powerful, impactful but nuanced and controlled bass. The new subwoofer family consists of the 8-inch Q SUB80, the 10-inch Q SUB100 and a 12-inch model, Q SUB120.

Flexible room placement

Placement in a room can impact sound arrival timing, while phase alignment issues can arise even with adjacent subwoofer placement, affecting system frequency response. The Q SUB range uses Digital Signal Processing (DSP), alongside fine delay adjustments and phase inversion switch, to address these integration challenges. This technology enables users to optimise settings for a class-leading performance, ensuring seamless integration with other speakers without needing professional installation.

Source detection

Subwoofers must accommodate a wide variety of sound input sources, including stereo preamp outputs or mono feeds from active speakers or home cinema systems. The Q SUB range uses a complex algorithm inside the DSP to identify the input signal type - stereo or mono and the level - and automatically adjusts system gain. This ensures optimal signal to noise levels and dynamic range, enhancing performance regardless of the connected source.

Classic finish to compliment your interior

The trio’s minimalist and clean design means they can blend discreetly into the room or proudly displayed to fit seamlessly into any interior space. The Q SUB series arrives in two modern but classic finishes: Satin Black with a black grille or Satin White with a grey grille. The new models join the slimline 3060S to complete Q Acoustics’ wider subwoofer family.

Power amplifier

The Q SUB amplifier module, custom-designed by Q Acoustics, includes a DSP, power amplifier, and power supply. It features four digital power amplifier stages in a parallel bridge-tied load (PBTL) configuration, enhancing efficiency and speaker control by reducing output impedance and heat dissipation. This design can deliver up to 300W continuous and 600W peak power, with exceptional total harmonic distortion (THD) performance of less than 0.1% up to 300W.

Frequency response adjustment

Subwoofers need an adjustable low pass filter to match their upper frequency response with the diminishing bass of other speakers. The Q SUB range features a low pass filter with frequency adjustment from 40 Hz to 250 Hz, setting the -6 dB point. This wide range ensures the Q SUB models can seamlessly integrate with and complement the low-frequency response of any partnering speaker system.

Driver design

The drive units feature a heavy-duty steel chassis, paper cone, and rubber surround. Bass unit diameters are 203mm (Q SUB80), 254mm (Q SUB100), and 305mm (Q SUB120). Voice coils are 38mm for Q SUB80/100 and 50mm for Q SUB120, with an aluminium demodulation ring for reduced inductance-induced modulation distortion.

Cabinet design

An infinite baffle (sealed box) design delivers tight, focused bass, coupled with DSP for precise acoustic tuning. With no port, placement near walls and furniture is easier. The Q SUB cabinets use 18mm high-density MDF with a 36mm double-thickness baffle for rigidity. Internal dart bracing enhances stability, reduces cabinet ballooning, and ensures optimal performance under high internal pressure.