Overview

The Q Acoustics Concept 50 is a premium floorstanding loudspeaker designed for listeners who demand accuracy, power, and refinement. Its dual 125 mm mid/bass drivers, a hermetically sealed 25 mm tweeter, and advanced cabinet construction such as Gelcore™ panels, point-to-point bracing, and a vibration isolating base work together to reduce distortion and ensure clarity across the frequency spectrum.

With a frequency response that reaches down to ~42 Hz, high sensitivity, and thoughtful design details like a rear port and a foam plug for tuning, the Concept 50 is well suited for both high-fidelity music and dynamic home cinema systems.

Top Key Features (with “why it matters”)

• 2 × 125 mm mid/bass drivers + 25 mm soft-dome tweeter
  Gives strong bass and midrange output, plus clear detail in the highs — a balanced tri-driver setup minimizes crossover stress and improves tonal clarity.
• Wide frequency response: 42 Hz – 30 kHz (-6 dB)
  Delivers deep enough bass for many music genres and movie effects, plus high-end sparkle and air for detail.
• Sensitivity ≈ 90.5 dB (2.83 V @ 1kHz)
  Efficient design means you don’t need an extremely powerful amplifier for clean, high-volume playback.
• Nominal Impedance 6 Ω, Minimum ≈ 3.6 Ω
  Relatively modest load for modern amplifiers, but choose gear that handles impedance dips well.
• Advanced cabinet design (Gelcore™, P2P bracing, isolating base)
  Reduces cabinet resonance, coloration, and vibration — results in cleaner mids, sharper transients, and more stable imaging.
• Rear port with foam bung
  Allows you to tune bass response depending on whether the speaker is close to a wall or in a more open space.
• Crossover at 2.1 kHz
  Provides a good balance between woofer and tweeter duties, ensuring smooth transition and minimal interference.

Technical Specifications

Specification	Detail
Driver configuration	2 × 125 mm mid/bass + 1 × 25 mm soft-dome tweeter
Frequency response (-6 dB)	42 Hz – 30 kHz
Nominal impedance	6 Ω
Minimum impedance	≈ 3.6 Ω
Sensitivity (2.83V @ 1kHz)	90.5 dB/W/m
Recommended amplifier power	25 - 150 W
Crossover frequency	2.1 kHz
Distortion (120-20 kHz @ 2.83 V)	< 0.2 %
Effective cabinet volume	28.8 litres
Dimensions (H × W × D) inc spikes & stabiliser	1025 × 418 × 319 mm (40.4 × 16.5 × 12.6 in)
Width (cabinet body)	180 mm (7.1 in)
Weight per loudspeaker	22.9 kg (50.5 lbs)

What’s in the Box

• Pair of Concept 50 floorstanding speakers
• Foam bungs (for port tuning)
• User Manual / Safety Instructions

Recommended Use Cases & Compatibility

• Large or medium-to-large listening rooms where spacious, detailed sound matters.
• Home theatre front-left/right speakers for immersive movies with rich bass and high clarity.
• Music genres like orchestral, electronic, rock, or any recording with wide dynamic range.
• Pairs well with amplifiers capable of delivering clean current into 6 Ω loads with decent headroom.

Important Notes / Limitations

• Bass down to ~42 Hz is strong, but for very deep sub-bass (< 30-35 Hz) a subwoofer is advisable.
• Rear port needs clearance from rear wall; using foam bung can help if placed close to wall.
• Impedance dip to ~3.6 Ω requires amplifier with stable performance and good current supply.
• Large dimensions and weight (≈ 22.9 kg / speaker) mean you need stable furniture/floor and space.

Common Questions (FAQ)

Q: Do these speakers need bi-wiring or special cabling?
They feature bi-wire-friendly binding posts which may help if you want separate paths for highs/lows, but not essential for good performance.

Q: Will I need a subwoofer with them?
For most music, the Concept 50s deliver strong bass down to ~42 Hz; a subwoofer is beneficial for very low tones or large, open spaces.

Q: What amplifier power is required?
Between 25-150 W is sufficient; higher power gives more headroom for louder dynamics without distortion.

Warranty & Support

• Standard Q Acoustics warranty via authorised dealers.
• Spare parts, service & documentation available through official channels.

Trust Factors & Extras

• Gelcore™ panel and P2P bracing reduce cabinet coloration and vibration.
• High sensitivity with modest nominal impedance makes pairing easier with a variety of amplifiers.
• Finishes in Black, Silver, White to suit different aesthetics; robust stabiliser base to ensure stable placement.