KEF Q550 is a 2-way Passive Passive Radiator Floor-standing speaker by KEF. It features a 1" Dome Tweeter and 2 x 5.25" Aluminum Woofer. Q550 also employs 2 x 5.25-inch passive radiators. The speaker has a frequency range of 58-28k Hz and a sensitivity of 87 dB. KEF Q550 has an MSRP of 1400$ per pair.
Q550 also gives the user optional Dolby Atmos capability by equipping the unit with upward-firing Dolby Atmos drivers.
What size of room is the KEF Q550 speaker good for?
The size of the room that you are planning to use the KEF Q550 is an important decision factor. Here we have evaluated its suitability to various size of environments considering its size and max power parameters:
| Listening Environment |
Suitability |
| Near-field | Bad |
| Small Room | Poor |
| Mid-size Room | Good |
| Large Room | Good |
| Very Large Room | Poor |
KEF Q550 Speaker Structure
What are the speakers in KEF's Q Series?
Q550 is a member of KEF's Q series of Passive speakers. Below you can see the main specs of these speakers.
KEF Q Series Speakers
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What is the Frequency Response of the KEF Q550 speaker?
KEF Q550 has a Frequency response range of 58-28k Hz at ±3dB (45Hz-50kHz at -6dB) and Power Range of 15-130 watts. At a minimum frequency of 58 Hz, Q550 will provide an average bass depth so depending on your use case, you may consider supplementing your system with a subwoofer.
To focus on the subwoofers that are in a similar price range with KEF Q550, check the Powered Subwoofers under $1500. Alternatively, find the Full list of Powered Subwoofers regardless from the price.
Here we have a comparison of how Q550's Low and High frequency values compared with the average, max and min Low and High frequency values in its class.
Low Frequency
Floor-standing Speakers
High Frequency
Floor-standing Speakers
KEF Q550's Aluminum Woofer
Among the speakers in our database with a max MSRP price of 1500$ (Pair), these are the 5 Passive Floor-standing speakers that have the deeper bass levels than the KEF Q550's 58Hz:
KEF Q550's vented aluminum Dome Tweeter
What is the Crossover frequency of KEF Q550?
Crossover frequency of the Q550 is set to 2500Hz. This is the threshold frequency where the higher frequency signals over this level are sent to the tweeter and the lower frequency signals are sent to the woofer by the crossover component.
What is the Impedance and Sensitivity of the KEF Q550? Is it an easy to drive speaker?
KEF Q550's nominal impedance level is
8 ohms but can go down to as low as
3.5 ohms, and has a sensitivity of
87 dB.
Sensitivity
Floor-standing Speakers
8 Ohms is pretty much the standard nominal impedance amongst stereo speakers and amplifiers so KEF Q550 is not considered a difficult to drive speaker from nominal Impedance perspective.
Sensitivity
With a sensitivity level of only 87 dB, KEF Q550 is a difficult to drive speaker from Sensitivity perspective, make sure to choose an amplifier with high output if you like listening your music at high volume levels. You may especially have hard time using Tube amplifiers which are traditionally very low power compared to Class A/B or Class D speakers.
Minimum Impedance of KEF Q550
Even though the nominal impedance of the Q550 is 8 ohms, the minimum impedance level of this speaker according to KEF is 3.5 ohms KEF Q550 so while choosing an amplifier, you should ideally check if the unit you are considering can provide this impedance level.
Check our Integrated Amplifiers page to find an amplifier to pair with the KEF Q550.
Input Type
Q550 features Binding post type connectors. Bi-amping and Bi-wiring is not possible.
KEF Q550 External Dimensions and Weight
KEF Q550 has external dimensions of (Height x Width x Depth) 35-3/16 x 11-5/8 x 12-5/16inch (894.0 x 296.0 x 313.0mm ).
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 Q550 is approximately 926.5cm2 / 143.6inch2.
WeightThe KEF Q550 weighs 14.55kg / 32lbs (per piece). Here is a comparison of how Q550's weight compared with the average, max and min weights in its class.
Weight
All Floor-standing Speakers
Weight
Floor-standing Speakers under $1500
How does the KEF Q550 compare to the KEF Q750?
One of the natural alternative to the KEF Q550 is the Q750 which is located one step higher in KEF's Passive Floor-standing selection.
Check the Detailed Comparison of KEF Q550 vs Q750 for more details.
Cabinet type and Materials
KEF Q550 has a
Passive Radiator type cabinet and MDF/Wood-grain vinyl finish.
Speaker Feet
KEF Q550 comes with the parts below which you can use to secure your loudspeaker on the surface that you are putting on:
2 Outrigger feet4 Spikes It is always recommended to use some kind of feet under all types of speakers. Besides limiting the movement of the speakers, it also compensates for non-flat surfaces and limits the contact surface area of the speaker. Rubber based feet also help isolating the vibrations within certain frequency ranges.
Port Position
KEF Q550 is a front-firing port speaker which gives you more flexibility compared to rear firing speakers when you need to place it close against a wall or other surfaces.
Available colors
KEF Q550 is available in Walnut.
KEF Q550 with Grille
What's in the Box of KEF Q550?
Here are the items that are included inside the box of Q550:
Floorstanding loudspeaker2 Outrigger feet4 Spikes6 Screws6 Washers4 Rubber insertsHex-keyOwners ManualWarranty Information
User's Manual
For more information about how to setup, use and maintain the KEF Q550, use the direct link below to download the official manual document:
Download User Manual for KEF Q550
Official Brochure
Here is a link to download the official brochure for the KEF Q550 speaker:
Official Brochure for KEF Q550
Official Product Page
Official manufacturer's product page for the KEF Q550 speaker can be found below:
Official Product Page for KEF Q550
Warranty
5 Years of parts warranty and 5 Years of labor warranty is generally provided by the manufacturer.