SpeakerDecision
  • SPEAKERS by TYPE
    • Passive Bookshelf Speakers
    • Passive Floor-standing Speakers
    • Passive Center Channel Speakers
    • Passive In-wall Speakers
    • All Passive Speakers
    • Powered Subwoofers
    • Powered Stereo Speakers
  • AMPLIFIERS
  • SMART FIND

Q Acoustics M40 vs DALI Oberon 5 Comparison

x
Speaker to replace
Change

Q Acoustics M40

Powered Floor-standing | 38-22k Hz

Q Acoustics M40
CHECK PRICE
Change
    
DALI Oberon 5

Passive Floor-standing | 39-26k Hz

DALI Oberon 5
CHECK PRICE
Q Acoustics M40 Q Acoustics M40
See at AMAZON
DALI Oberon 5 DALI Oberon 5
See at AMAZON
Q Acoustics M40
See at AMAZON
DALI Oberon 5
See at AMAZON
Q Acoustics M40 vs DALI Oberon 5 Speaker Comparison

In this review, we will be comparing M40 and Oberon 5, two Floor-standing speakers from Q Acoustics and DALI. The main difference between these two speakers is that the Q Acoustics M40 is a Powered speaker which means that it has a built-in amplifier inside the speaker body so you don't need an external power amp or an integrated amp whereas the DALI Oberon 5 is a Passive speaker so has to be matched with an amplifier to get any sound from it.

Let's have a brief look at the main features of Q Acoustics M40 and DALI Oberon 5 first before getting into our more detailed comparison.

Q Acoustics M40 Key Specs

  • 2-way Design
  • 50-watt RMS( 100-watt Peak) Integrated Amplifier
  • 0.875" Dome Tweeter
  • 2 x 5" Woofer
  • 38-22k Hz Frequency Response
  • 24-bit Max Depth / 192 kHz Max Sample Rate
  • Built-in 5.0 Bluetooth
  • Weight:11.80kg
  • Dimensions (H x W x D): 710.0" x 10" x 11.7"( 250 x 710 x 296 mm )

DALI Oberon 5 Key Specs

  • 2-way Design
  • 1.125" Soft-Dome Tweeter
  • 2 x 5.25" Wood Fiber Woofer
  • 39-26k Hz Frequency Response
  • 88 dB Sensitivity
  • Impedance: 6ohms
  • Power Range:30-150watts
  • Weight:10.80kg
  • Dimensions (H x W x D): 832.0" x 7-15/16" x 10-7/8"( 832.0 x 202.0 x 277.0mm )

In the following sections, we will get into more detail in order to better understand how the Q Acoustics M40 and DALI Oberon 5 compare and hopefully end up with enough arguments to decide which one of these loudspeakers is the better choice for you.


**This post contains affiliate links, and I will be compensated if you make a purchase after clicking through my links. As an Amazon Associate I earn from qualifying purchases.


Drivers

Both M40 and Oberon 5 are 2-way speakers.

Driver Q Acoustics M40 DALI Oberon 5
Driver Setup 2-way 2-way
Tweeter 0.875-inch 1.125-inch
Midrange - -
Woofer 2 x 5-inch 2 x 5.25-inch

M40 features a 0.875" Dome Tweeter and 2 x 5" Woofer . On the other hand, the Oberon 5 features a 1.125" Soft-Dome Tweeter and 2 x 5.25" Wood Fiber Woofer with a Crossover frequency at 2400Hz.

Frequency Response

M40 has a frequency range of 38-22k Hz whereas Oberon 5 has a frequency range of 39-26k Hz. With a minimum frequency of 38Hz, the M40 can go slightly deeper then the Oberon 5's min frequency of 39Hz.

Below graphs depict how these two speakers compare with the max, min and average values of the Min and Max Frequencies of other speakers in the Floor-standing class in our database.

Low Frequency

Floor-standing Speakers

M40
Oberon 5
Min
Average
Max
High Frequency

Floor-standing Speakers

Q Acoustics M40
DALI Oberon 5
Min
Average
Max

None of these speakers achieves full range experience which is commonly agreed as 20Hz-20kHz. In order to achieve lower lows / deeper bass, we recommend you pair these with a subwoofer. Visit our Powered Subwoofers section to find out more about the available options.

Cabinet Type and Port Position

Both M40 and Oberon 5 have rear firing ports. Rear ported speakers generally need more room between the backside of the speaker and the wall compared to sealed and front/bottom ported speakers. Placing the speakers too close to the walls may cause the bass to sound boomy.

If you are limited in space and can't get the speakers away from the backwall, check our Speakers with Front Firing Ports page.

Physical Specs

Size of a speaker can sometimes become an important decision factor due to space constraints or in some cases purely for esthetic reasons. In this section, we are going to compare Q Acoustics M40's and DALI Oberon 5's external dimensions. Q Acoustics M40 has external dimensions of 250 x 710 x 296 mm ( 10 x 28 x 11.7 inch) whereas DALI Oberon 5 has external dimensions of 832.0 x 202.0 x 277.0mm ( 32-3/4 x 7-15/16 x 10-7/8inch) .

DALI Oberon 5 is 48mm narrower and 19mm less deeper than Q Acoustics M40 but it is also 122mm taller.

Base Surface Area Comparison
Base surface area of a loudspeaker may become a determining factor when the space in your room or desk is limited. The base surface area of the Q Acoustics M40 is approximately 740.0cm2 / 114.7inch2 and base area of the DALI Oberon 5 is approximately 559.5cm2 / 86.7inch2. The M40 requires 32% more surface area than the Oberon 5 which gives it a small disadvantage on placement in tight spaces.

What's in the Box of Q Acoustics M40?

Here are the items that are included inside the box of M40:
  • 1x Powered M40 speaker
  • 1x Passive M40 speaker
  • 4x Rear Stabiliser
  • 8x M5 screw
  • 8x Spike Feet
  • 8x Spike Cover
  • 1x Remote Handset (including batteries)
  • 1x Speaker Cable (4 metres)
  • 1x UK Power Cord (2 metres)
  • 1x EU Power Cord (2 metres)
  • 2x Foam Bungs
  • What's in the Box of DALI Oberon 5?

    Here are the items that come with the Oberon 5:
  • 2 Floorstanding loudspeakers
  • 2 Grilles
  • 8 Rubber feet
  • 8 Spike-feet
  • 8 Hex-nuts
  • Manual

  • Reasons to choose Q Acoustics M40 over DALI Oberon 5
    Speaker Type Powered vs Passive Built-in amplifier
    Low Frequency Response 38 Hz vs 39 Hz Generates deeper bass
    Height 710mm vs 832mm Easier to fit in smaller spaces
    Price per pair* 999USD vs 1299USD costs less (*prices may change depending on the seller, location and time)
    3.5mm Connection Yes vs No Connection via 3.5mm AUX input
    RCA Connection Yes vs No Connection via RCA input

    Reasons to choose DALI Oberon 5 over Q Acoustics M40

    Woofer Size 5.25 inches vs 5 inches Larger woofer
    High Frequency Response 26k Hz vs 22k Hz Generates higher frequency
    Base Surface Area 559cm2 vs 740cm2 Takes less floor space
    Q Acoustics M40 vs DALI Oberon 5 Specs Table
    Detailed comparison of specifications
    General Q Acoustics M40 DALI Oberon 5
    Brand Q Acoustics DALI
    Speaker Type Powered stereo speakers Floor-standing speaker
    Sensitivity n/a 88 dB
    Impedance n/a 6 ohms
    Frequency Response 38-22k Hz 39-26k Hz
    Amplifier
    Watts RMS (Continuous) 50-watt RMS n/a
    Watts Peak (Max) 100-watt RMS n/a
    Max Bit Depth 24-bit n/a
    Max Sample Rate 192 kHz n/a
    Drivers
    Woofer Quantity 2 2
    Woofer Size 5" 5.25"
    Woofer Composition Wood Fiber
    Woofer Surround Material n/a Rubber
    Tweeter Size 0.875" 1.125"
    Tweeter Type Dome Soft-Dome
    Aimable Tweeter No No
    Midrange Driver No No
    Crossover Frequency n/a 2400Hz
    Firing Direction rear rear
    Physical Specs
    Height 710.0mm (28") 832.0mm (32.8")
    Width 250.0mm (9.8") 202.0mm (8")
    Depth 296.0mm (11.7") 277.0mm (10.9")
    Weight 11.80kg (26lbs) 10.80kg (23.8lbs)
    Enclosure Bass Reflex Bass Reflex
    Finish n/a MDF/Wood-grain vinyl
    Available Colors Black, White, Walnut Black Ash, Light Oak, Dark Walnut, White
    Grille Yes Yes
    Moisture Resistancy No No
    Connections
    Biamp Inputs n/a No
    Aux Inputs 3.5mm, Stereo RCA n/a
    USB Port USB-B n/a
    Phone Input No n/a
    Subwoofer Output mono-RCA n/a
    Digital Input Optical n/a
    HDMI Input No n/a
    Headphone Jack No n/a
    Other
    Parts Warranty 2 Years 5 Years
    Labor Warranty 2 Years 5 Years

    Most Popular Speakers
    Klipsch Reference R-51M
    Klipsch R-51M
    2-way | 93 dB | 8 ohms
    Wharfedale Elysian 2
    Wharfedale Elysian 2
    3-way | 89 dB | 4 ohms
    ELAC Debut 2.0 B6.2
    ELAC Debut 2.0 B6.2
    2-way | 87 dB | 6 ohms
    Bowers & Wilkins 606 S2 Anniversary Edition
    B&W 606 S2
    2-way | 88 dB | 8 ohms
    KEF Q150
    KEF Q150
    2-way | 86 dB | 8 ohms
    Klipsch Reference Premiere RP-500M
    Klipsch RP-500M
    2-way | 93 dB | 8 ohms
    Wharfedale EVO4.1
    Wharfedale EVO4.1
    2-way | 87 dB | 8 ohms
    Bowers & Wilkins 606
    B&W 606
    2-way | 88 dB | 8 ohms
    Copyright © 2025 by SpeakerDecision
    About Privacy Contact US Camera Decision

    Report a Correction