Pair Of Amplified Stereo Speakers 40WRMS

Adastra Active Speakers (Model 178.200UK / QTX QR5B)

Overview

The Adastra 178.200UK--also known as QTX QR5B--is a durable pair of 5.25″ active stereo speakers with integrated amplifiers. Designed to deliver powerful, clear audio, it's ideal for home studios, DJs, commercial installations, and background music in hospitality settings.

Design and Build Quality

• Durable ABS housing with a vented design ensures deep bass response and longevity.
• Neodymium dome tweeters deliver crisp and detailed high-frequency performance.
• Includes adjustable wall-mount brackets, offering easy installation and tilt adjustment.
• One powered, one passive speaker connected via supplied 5 m cable--ideal for stereo setup.

Key Technologies and Features

• 2‑Way active design - separates bass and treble drivers for balanced and dynamic sound performance.
• Built-in 40 W RMS amplifier - removes the need for external amplification.
• Neodymium tweeter - lighter and more efficient than conventional models, improving clarity.
• Bass and treble contour controls - allow tonal adjustment to suit room acoustics or music genres.
• Wall or desktop mounting - versatile installation options with included hardware.

Specifications

Performance and User Experience

The Adastra 178.200UK delivers punchy, well-defined low frequencies and vibrant highs. Real-world use reports emphasise its clarity in desktop studio setups or live monitoring for DJs. Tonal controls allow users to tailor sound to their environment. The robust build--with well-vented cabinets and wall mounting--ensures durability and placement flexibility, whether for background music or primary audio applications.

Who Is It For?

• Home audiophiles: For compact studio or multimedia use.
• DJ setups: Offers near-field clarity and volume control.
• Commercial venues: Restaurants, cafés or retail spaces needing easy-to-install background sound.
• Installers: Supplied with brackets and cable for fast deployment.

Q&A

• Can I mount these on the wall? Yes--it comes with adjustable brackets to rotate and tilt units, ideal for on-wall setups.
• Do they work with mixers? Absolutely--finger-friendly 290 mV RCA input suits most consumer and semi-professional mixers.
• How loud do they get? With 40 W RMS total and 89 dB sensitivity, they handle medium rooms well while maintaining clarity.
• Is bi-amping possible? No--it's a fixed active/passive pair; only one amp is onboard.
• Are they durable? Built in vented ABS with metal grills, plus secure brackets and 5 m lead, they're suitable for both indoor and semi-permanent installs.