Introduction
At Qln, we always try to communicate music’s message with the utmost skill and balance. For us, tonal balance is more important than the standard measurements used today to describe a speaker’s performance, such as frequency response, distortion, waterfall diagrams, impedance curves, pulse/transient response, and so on.
There are so many things we can’t measure—or that are very hard to measure—and it’s difficult to judge them based only on what we do measure.
How do you measure the difference between a copper-foil capacitor and metallized aluminium? The same applies to flat-foil inductors with polypropylene isolation compared with paper-impregnated viscoelastic insulation resin.
They measure practically the same yet sound very different.
By tonal balance, we don’t mean only the frequency-response behaviour. We mean tonal balance in sound character and material behaviour; the match between the different drive units’ cone areas; and how the drive units change with high- and low-level signals.

Sound character should not change with frequency or signal level

Cabinet design
The Master 7 shares the same design core as Qln’s other floor-standing speakers.
The slanted baffle provides perfect time alignment between the drivers, with a focus on correct phase behaviour. The cabinet is optimized for minimal baffle area, which suppresses baffle effects, and its truncated pyramid top reduces standing waves inside the structure.

With the Master 7, we have made key improvements to optimize performance. The shape has been refined. The 40mm-thick walls and heavily braced cabinet are fully constructed from Qln’s proprietary Qboard® technology, effectively eliminating structural resonances in the acoustic chamber.

The drive units are mounted on a 6mm aluminium frame for better, more precise mounting. Damping felt is applied around all three drive units.

The bass reflex port, with its trumpet shape at both ends, further reduces air turbulence. The cabinet is supported by four strong, solid legs with adjustable feet that suit both hardwood/stone floors and carpeted floors.

The result is a three-dimensional stereo image with lifelike depth and spatial cues from the recording environment, even in a larger cabinet design.

The Master 7, with 40mm-thick walls and a heavily braced cabinet, is fully constructed from Qln’s proprietary Qboard® technology, effectively eliminating structural resonances in the acoustic chamber.

The bass reflex port, with its trumpet shape at both ends, further reduces air turbulence. The cabinet is supported by two strong, solid legs with adjustable feet that suit both hardwood/stone floors and carpeted floors

Read more about Timing
Read more about Qboard®

Woofer
The 184mm hard-cone woofer features an under-hung magnet system where the voice coil stays in the magnet gap at all times, resulting in a completely linear motor system. Together with the extremely open basket, this allows airflow without compression or turbulence. It offers more micro-detail and lowers acoustic noise typically found in standard baskets. Built-in copper rings in the magnet system provide symmetrical drive and lower voice-coil inductance, resulting in higher dynamics in the midrange while also suppressing intermodulation distortion.
The long-stroke 184mm hard-cone woofer, in an oversized, low-tuned bass reflex design, gives the best of both worlds: sealed and bass reflex. It extends bass down to 28Hz and minimizes group delay

Tweeter
The advanced 25mm wide-surround tweeter offers remarkable vocal reproduction and excellent imaging at all listening positions. Its large roll surround and textile dome diaphragm provide a flat frequency response above 30 kHz with outstanding off-axis dispersion. The acoustically open magnet system eliminates reflections and resonances. For the Master 7, we developed a new, unique chamber design. The chamber is an acoustically damped transmission-line design to avoid internal reflections and compression

Cables, speaker connectors and internal damping.
Internal cabling is our own special design, produced in Sweden. Solid, pure copper cores with Teflon insulation are bound with a high-damping acoustic shield to minimize acoustic feedback. All components are carefully hand-selected and individually tested for any deviations.
Speaker terminals are WBT Nextgen® connectors made of the highest-grade pure copper, with minimal copper mass for low energy storage—lowering distortion and offering the purest contact to the speaker cable.
For internal acoustic damping, we use real wool. Wool is the best material for internal acoustic damping, but we need a small amount of synthetic fibre to achieve the right density