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Q Acoustics M40 vs Q Acoustics M20 HD Comparison

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Q Acoustics M40

Powered Floor-standing | 38-22k Hz

Q Acoustics M40
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Q Acoustics M20 HD

Powered Bookshelf | 55-22k Hz

Q Acoustics M20 HD Wireless Music System
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Q Acoustics M40 Q Acoustics M40
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Q Acoustics M20 HD Q Acoustics M20 HD
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Q Acoustics M40
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Q Acoustics M20 HD
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Q Acoustics M40 vs Q Acoustics M20 HD Speaker Comparison

In this review, we will be comparing two different type of speakers by Q Acoustics. Q Acoustics M40 is a Floor-standing speaker whereas the M20 HD is a Bookshelf speaker.

Let's have a brief look at the main features of Q Acoustics M40 and Q Acoustics M20 HD 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 )

Q Acoustics M20 HD Key Specs

  • 2-way Design
  • 128-watt RMS Integrated Amplifier
  • 0.875" Dome Tweeter
  • 5" Woofer
  • 55-22k Hz Frequency Response
  • 24-bit Max Depth / 192 kHz Max Sample Rate
  • Built-in 5.0 Bluetooth
  • Weight:5.10kg
  • Dimensions (H x W x D): 278.0" x 6-11/16" x 12-3/16"( 278.0 x 170.0 x 310.0mm )

In the following sections, we will get into more detail in order to better understand how the Q Acoustics M40 and Q Acoustics M20 HD 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 M20 HD are 2-way speakers.

Driver Q Acoustics M40 Q Acoustics M20 HD
Driver Setup 2-way 2-way
Tweeter 0.875-inch 0.875-inch
Midrange - -
Woofer 2 x 5-inch 1 x 5-inch

M40 features a 0.875" Dome Tweeter and 2 x 5" Woofer . On the other hand, the M20 HD features a 0.875" Dome Tweeter and 1 x 5" Woofer .

Frequency Response

M40 has a frequency range of 38-22k Hz whereas M20 HD has a frequency range of 55-22k Hz. With a minimum frequency of 38Hz, the M40 can go significantly deeper on the low side and provide stronger bass compared to the M20 HD's min frequency of 55Hz.

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
M20 HD
Min
Average
Max
High Frequency

Floor-standing Speakers

Q Acoustics M40
Q Acoustics M20 HD
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 M20 HD 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 Q Acoustics M20 HD's external dimensions. Q Acoustics M40 has external dimensions of 250 x 710 x 296 mm ( 10 x 28 x 11.7 inch) whereas Q Acoustics M20 HD has external dimensions of 278.0 x 170.0 x 310.0mm ( 10-15/16 x 6-11/16 x 12-3/16inch) .

Q Acoustics M20 HD is 80mm narrower and 432mm shorter than Q Acoustics M40 but it is also 14mm deeper.

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 Q Acoustics M20 HD is approximately 527.0cm2 / 81.7inch2. The M40 requires 40% more surface area than the M20 HD 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 Q Acoustics M20 HD?

    Here are the items that come with the M20 HD:
  • Powered speaker
  • Passive speaker
  • 6-feet AC power cord
  • Remote control
  • 2 AAA batteries
  • 13-feet Speaker wire
  • 59-inch Optical digital cable
  • 2 Foam port plugs
  • Owners Manual

  • Reasons to choose Q Acoustics M40 over Q Acoustics M20 HD Wireless Music System
    Number of Woofers 2 vs 1 More woofers
    Low Frequency Response 38 Hz vs 55 Hz Generates deeper bass
    USB Port USB-B vs No USB port adds flexibility

    Reasons to choose Q Acoustics M20 HD Wireless Music System over Q Acoustics M40

    Height 278mm vs 710mm Easier to fit in smaller spaces
    Base Surface Area 527cm2 vs 740cm2 Takes less floor space
    Price per pair* 599USD vs 999USD costs less (*prices may change depending on the seller, location and time)
    Q Acoustics M40 vs Q Acoustics M20 HD Specs Table
    Detailed comparison of specifications
    General Q Acoustics M40 Q Acoustics M20 HD Wireless Music System
    Brand Q Acoustics Q Acoustics
    Speaker Type Powered stereo speakers Powered stereo speakers
    Frequency Response 38-22k Hz 55-22k Hz
    Amplifier
    Watts RMS (Continuous) 50-watt RMS 128-watt RMS
    Watts Peak (Max) 100-watt RMS n/a
    Max Bit Depth 24-bit 24-bit
    Max Sample Rate 192 kHz 192 kHz
    Drivers
    Woofer Quantity 2 1
    Woofer Size 5" 5"
    Woofer Composition
    Tweeter Size 0.875" 0.875"
    Tweeter Type Dome Dome
    Aimable Tweeter No No
    Midrange Driver No No
    Firing Direction rear rear
    Physical Specs
    Height 710.0mm (28") 278.0mm (10.9")
    Width 250.0mm (9.8") 170.0mm (6.7")
    Depth 296.0mm (11.7") 310.0mm (12.2")
    Weight 11.80kg (26lbs) 5.10kg (11.2lbs)
    Enclosure Bass Reflex Bass Reflex
    Available Colors Black, White, Walnut Black, White, Walnut
    Mounting Bracket No No
    Grille Yes Yes
    Moisture Resistancy No No
    Connections
    Aux Inputs 3.5mm, Stereo RCA 3.5mm, Stereo RCA
    USB Port USB-B USB-B
    Phone Input No No
    Subwoofer Output mono-RCA mono-RCA
    Digital Input Optical Optical
    HDMI Input No No
    Headphone Jack No No
    Ethernet Port n/a No
    Other
    Parts Warranty 2 Years 2 Years
    Labor Warranty 2 Years 2 Years

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