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  1. Home
  2. KEF Speakers
  3. Passive Floor-standing Speakers
  4. KEF MUON
KEF MUON Review
KEF MUON - Front View

Compare To

Main Features

  • 1" vented aluminium dome with Tangerine Waveguide Tweeter
  • 5" aluminium cone with Uni-Q Technology Midrange
  • 6 x 10" aluminium cone Woofer
  • 25-60k Hz Frequency Response
  • 90 dB Sensitivity
  • Impedance: 4ohms
  • Power Range: 100-400 watts
  • Weight: 253.00 lbs / 115.00 kg
  • Dimensions(HxWxD): 78.8"x23.6"x15" / 2000 x 600 x 380 mm
MSRP: $225,000 (list price)
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KEF MUON Review
KEF MUON KEF MUON
Check price atAmazon›

Made by KEF · United Kingdom · since 1961 · sold through dealers

KEF MUON is a 4-way Passive Sealed Floor-standing speaker by KEF. It was released in 2007. It features a 1" vented aluminium dome with Tangerine Waveguide Tweeter, 1 x 5" Midrange and 6 x 10" aluminium cone Woofer.

Four-way sealed design in a 6 mm super-formed aluminium shell by Ross Lovegrove. Six 250 mm bass drivers are joined by a seventh 250 mm lower-midrange, above which sit the Uni-Q 125 mm Li-Mg-Al/LCP midrange and a vented 25 mm aluminium dome with the Tangerine waveguide. Acoustic Compliance Enhancement fills the cabinet with activated carbon to roughly double its effective volume. Limited to 100 pairs, each supplied with its own measured response curve.

The speaker has a frequency range of 25-60k Hz and a sensitivity of 90 dB. KEF MUON has an MSRP of 225000$ per pair.

Room Size Suitability

The size of the room where you plan to use the KEF MUON is a crucial factor in your decision. We have assessed its suitability for various room sizes based on its dimensions and maximum power output:

Listening Environment* Suitability
Near-fieldAre you nuts?
Small RoomPoor
Mid-size RoomAverage
Large RoomGood
Very Large RoomGood

(* Approximate Room sizes: Small < 100sq. ft / 9 m2, Mid-size: 100-220 sq. ft / 9-20 m2, Large 220-400 sq. ft / 20-36 m2, Very Large: > 400 sq. ft / 36 m2. Average Floor Height: 9" / 2.7m. Typical room sizes differ from country to country, and the actual listening experience changes depending on floor height, room shape, surface materials, listening position, speaker locations, etc.)

Frequency Response of the KEF MUON Speaker

KEF MUON has a Frequency response range of 25-60k Hz and Power Range of 100-400 watts. With a minimum frequency of 25 Hz, MUON delivers deep bass that will likely satisfy most listeners, especially those who enjoy music. However, movie enthusiasts and music fans who prefer a full range of sound may still benefit from adding a subwoofer.

Here we have a comparison of how MUON's Low frequency value compares with the average, max and min Low frequency values in its class.
Low Frequency
Floor-standing Speakers
KEF MUON
Min
Average
Median
Thinking about a subwoofer for the KEF MUON?
  • Work out the crossover setting - it follows from this speaker's 25 Hz low end
  • Every powered subwoofer we cover, whatever the budget

Among the speakers in our database at any price, there is only one Passive Floor-standing speaker that has deeper bass than the KEF MUON's 25Hz:

  • PSB Synchrony T600 with Low Frequency of 24 Hz (Compare w/ MUON)

Crossover frequency of the KEF MUON?

MUON is a 4-way speaker and its crossover frequency between the woofer and the midrange is set to 300 Hz and the crossover frequency between the midrange and the tweeter is set to 2300 Hz.

KEF MUON driver frequency bands25-120Woofer 10"120-300Lower mid300-2.3kMidrange2.3k-60kTweeter 1"20501002005001k2k5k10k20k40kHz, log scale

Impedance and Sensitivity

KEF MUON's nominal impedance level is 4 ohms and has a sensitivity of 90 dB.

Sensitivity
Floor-standing Speakers
KEF MUON
Min
Average
Median

Nominal Impedance of the 4 Ohms means that the KEF MUON is a difficult to drive speaker from nominal Impedance perspective, make sure that you choose an amplifier than can provide 4 Ohms for this speaker.

Many AVRs (audio/video receiver) in the market may have difficulty when the speakers dip below the 4 Ohms levels (this may cause clipping or even physical damage), so we recommend to not pair the KEF MUON with an AVR but use an Integrated Amplifier instead.

Sensitivity

90dB of the KEF MUON is an average sensitivity for stereo speaker so it is neither easy nor difficult to drive Sensitivity wise. Work out how loud the KEF MUON plays in your room →

Running more than one pair from a single amplifier? Check the load it would present →

What amplifier does the KEF MUON need?

At normal listening levels in a medium room, about 15–240 W per channel into 4 ohms. Set your own conditions and we will rank every amplifier we cover.

We check power, impedance safety and current delivery - not just watts.

Prefer to browse? See every integrated amplifier we cover.

Input Type

MUON has Binding posts type connectors and lets bi-amping/bi-wiring. Bi-wiring can enhance the overall transparency of your loudspeakers by using separate speaker wires for the low and high-frequency drivers from a single amplifier. Bi-amping, on the other hand, involves using separate amplifiers for the high and low-frequency drivers, potentially resulting in a greater dynamic range and reduced distortion.

Work out what gauge speaker cable this run needs →

KEF MUON External Dimensions and Weight

KEF MUON has external dimensions of (Height x Width x Depth) 78.8 x 23.6 x 15 in. (2000 x 600 x 380 mm ).

Base Surface Area
Base surface area of a loudspeaker may become a determining factor when the space in your room or desk is limited. The base area of KEF MUON is approximately 2280.0cm2 / 353.4inch2.

Find speakers that fit your shelf or alcove →  ·  Work out where they should sit in the room →

Weight

The KEF MUON weighs 115.00kg / 253lbs per piece. Here is a comparison of how MUON's weight compares with the average, max and min weights in its class.

Weight
All Floor-standing Speakers
KEF MUON
Min
Average
Median
Weight
Floor-standing Speakers over $20,000
KEF MUON
Min
Average
Max

Cabinet type and Materials

KEF MUON has a Sealed type cabinet.

Available colors

KEF MUON is available in Super-formed polished aluminium.

Recommended Accessories

Here is a list of accessories that we think you may need for the KEF MUON.

  • Speaker Cable and Connectors
    • Speaker Cables with Banana Plugs: If you know the lenght of the cable you need, this is the easier option to connect your speakers with your amp.
    • Speaker Cables without Connectors: If you are not sure about the lenght or need longer than standard cables with plugs, choose this option.
    • Banana Connectors and Plugs: If you chose the cables without connectors option or already have some cable around, pick the banana plugs separately.
  • Vibration Isolators: IsoAcoustics isolators are our favorite isolators but you may find more affordable options too.
  • Acoustic Panels and Treatments: Your room is as important as your stereo equipment so acoustic treatments goes a long way in improving the overall performance.

Official Product Page

Official manufacturer's product page for the KEF MUON speaker can be found below:
Official Product Page for KEF MUON

Warranty

5 years of parts warranty and 5 years of labor warranty is generally provided by the manufacturer.

KEF MUON Alternatives in Passive Floor-standing Speakers
Model Type Sensitivity Impedance Frequency
PSB Synchrony T600
Compare
3-way 89 dB 4 ohms 24-23k Hz
Frequently Asked Questions about KEF MUON

What amplifier do you need for the KEF MUON?

KEF rates the KEF MUON for 100-400 watts of amplifier power. It is a 4-ohm speaker, a demanding load that wants an amplifier rated to drive 4 ohms - many budget receivers are not.

Is the KEF MUON easy to drive?

The KEF MUON has a sensitivity of 90 dB. That is high: it goes loud on modest power, so it suits low-powered amplifiers, including valve/tube designs.

Does the KEF MUON need a subwoofer?

The KEF MUON reaches down to 25Hz (full range 25-60k Hz). That is genuinely deep bass - a subwoofer is optional unless you want home-theatre effects below that.

What drivers does the KEF MUON use?

The KEF MUON is a 4-way design using a 1" vented aluminium dome with Tangerine Waveguide tweeter, a 5" midrange and 6 x 10" aluminium cone woofers.

Is the KEF MUON sealed or ported?

The KEF MUON uses a Sealed enclosure. A sealed box trades some output for tighter, more even bass and is the more forgiving choice close to a wall.

Can the KEF MUON be bi-wired or bi-amped?

Yes. The KEF MUON has two sets of terminals, so it can be bi-wired or bi-amped: bi-wiring runs separate cable to the treble and bass sections, bi-amping gives each its own amplifier channel. It uses Binding posts terminals.

How big and heavy is the KEF MUON?

The KEF MUON weighs 115.00kg / 253lbs each and measures 78.8 x 23.6 x 15 in. (HxWxD).

How much does the KEF MUON cost?

The KEF MUON has a manufacturer's list price (MSRP) of $225,000 per pair.


KEF MUON Detailed Specifications

General
BrandKEF
Full Model NameKEF MUON
Speaker Type4-way Floor-standing
Power Range100-400 watts
Sensitivity90 dB
Impedance4 ohms
Max SPL118 dB
Frequency Response25-60k Hz
Release Date2007
DRIVERS
Woofer Size10-inch
Woofer Compositionaluminium cone
Tweeter Size1-inch
Tweeter Typevented aluminium dome with Tangerine Waveguide
Midrange Size5-inch
Crossover freq120Hz, 300Hz and 2300Hz

CONNECTIONS
Connector TypeBinding posts
Biamp InputsYes
PHYSICAL SPECS
Height2000.0mm ( 78.8-inch)
Width600.0mm ( 23.6-inch)
Depth380.0mm ( 15-inch)
Height2000.0mm ( 78.8-inch)
Weight115 kg (253 lbs)
EnclosureSealed
Available ColorsSuper-formed polished aluminium
Moisture ResistanceNo
OTHER
Handheld RemoteNo
Parts Warranty5 years
Labor Warranty5 years
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