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ELAC Uni-Fi FS U5 Slim Review
ELAC Uni-Fi FS U5 Slim

Main Features

  • 1" soft dome Tweeter
  • 4" aluminum Midrange
  • 3 x 5.25" Aluminum Woofer
  • 42-25k Hz Frequency Response
  • 85 dB Sensitivity
  • Impedance: 4ohms
  • Power Range: 40-140watts
  • Weight:0.00 lbs / 0.00 kg
  • Dimensions(HxWxD): 39-7/8"x10-3/16"x12-7/8" / 1013.0 x 259.0 x 328.0mm
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ELAC Uni-Fi FS U5 Slim Review
ELAC Uni-Fi FS U5 Slim ELAC Uni-Fi FS U5 Sl...
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ELAC Uni-Fi FS U5 Slim is a 3-way Passive Bass Reflex Floor-standing speaker designed by Andrew Jones for ELAC. It features a 1" soft dome Tweeter, 1 x 4" Midrange and 3 x 5.25" Aluminum Woofer. The speaker has a frequency range of 42-25k Hz and a sensitivity of 85 dB. ELAC Uni-Fi FS U5 Slim has an MSRP of 1720$ per pair but can often be found around 1470$ per pair.

Room Size Suitability

The size of the room where you plan to use the ELAC Uni-Fi FS U5 Slim 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-fieldBad
Small RoomPoor
Mid-size RoomGood
Large RoomGood
Very Large RoomPoor

(* 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.)

ELAC's Uni-Fi Series of Loudspeakers

Uni-Fi FS U5 Slim is a member of ELAC's Uni-Fi series of Passive speakers. Below you can see the main specs of these speakers.

ELAC Uni-Fi Series Speakers
Model Frequency SensitivityImpedance Woofer
ELAC Uni-Fi 2.0 UB52
Compare
46-35k Hz 85 dB6Ω 1 x 5.25"
ELAC Uni-Fi UB5
Compare
46-25k Hz 85 dB4Ω 1 x 5.25"
ELAC Uni-Fi 2.0 UF52
Compare
42-35k Hz 85 dB6Ω 3 x 5.25"
ELAC Uni-Fi 2.0 UC52
Compare
48-35k Hz 85 dB6Ω 2 x 5.25"
ELAC Uni-Fi BS U5 Slim
Compare
46-25k Hz 85 dB4Ω 1 x 5.25"
ELAC Uni-Fi FS U5 Slim
42-25k Hz 85 dB4Ω 3 x 5.25"
ELAC Uni-Fi CC U5 Slim
Compare
48-25k Hz 85 dB4Ω 2 x 5.25"


**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.

Frequency Response of the ELAC Uni-Fi FS U5 Slim Speaker

ELAC Uni-Fi FS U5 Slim has a Frequency response range of 42-25k Hz at ±3dB and Power Range of 40-140 watts. With a minimum frequency of 42 Hz, Uni-Fi FS U5 Slim 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.

To focus on the subwoofers that are in a similar price range with ELAC Uni-Fi FS U5 Slim, check out the Powered Subwoofers under $2000. Alternatively, find the Full list of Powered Subwoofers regardless of the price.
Here we have a comparison of how Uni-Fi FS U5 Slim's Low and High frequency values compare with the average, max and min Low and High frequency values in its class.
Low Frequency
Floor-standing Speakers
ELAC Uni-Fi FS U5 Slim
Min
Average
Max
High Frequency
Floor-standing Speakers
ELAC Uni-Fi FS U5 Slim
Min
Average
Max

Among the speakers in our database with a max MSRP price of 2000$ (Pair), these are the 5 Passive Floor-standing speakers that have the deeper bass levels than the ELAC Uni-Fi FS U5 Slim's 42Hz:

  • KLH Kendall with Low Frequency of 25 Hz (Compare w/ Uni-Fi FS U5 Slim)
  • KLH Concord with Low Frequency of 28 Hz (Compare w/ Uni-Fi FS U5 Slim)
  • GoldenEar Triton Seven with Low Frequency of 29 Hz (Compare w/ Uni-Fi FS U5 Slim)
  • PSB Imagine X2T with Low Frequency of 30 Hz (Compare w/ Uni-Fi FS U5 Slim)
  • SVS Prime Tower with Low Frequency of 30 Hz (Compare w/ Uni-Fi FS U5 Slim)

Impedance and Sensitivity

ELAC Uni-Fi FS U5 Slim's nominal impedance level is 4 ohms and has a sensitivity of 85 dB.

Sensitivity
Floor-standing Speakers
ELAC Uni-Fi FS U5 Slim
Min
Average
Max

Nominal Impedance of the 4 Ohms means that the ELAC Uni-Fi FS U5 Slim 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 ELAC Uni-Fi FS U5 Slim with an AVR but use an Integrated Amplifier instead.

Sensitivity

With a sensitivity level of only 85 dB, ELAC Uni-Fi FS U5 Slim is a difficult to drive speaker from Sensitivity perspective, make sure to choose an amplifier with a high output if you like listening to your music at high volume levels. You may especially have a hard time using Tube amplifiers which are traditionally very low power compared to Class A/B or Class D amps.

Check the amplifiers that are in a similar price range to the ELAC Uni-Fi FS U5 Slim:

  • Integrated Amps under 1500 USD
  • Integrated Amps under 2000 USD
  • Integrated Amps under 3000 USD
  • All Integrated Amplifiers

Input Type

Uni-Fi FS U5 Slim features Binding post type connectors. Bi-amping and Bi-wiring are not possible.

ELAC Uni-Fi FS U5 Slim External Dimensions and Weight

ELAC Uni-Fi FS U5 Slim has external dimensions of (Height x Width x Depth) 39-7/8 x 10-3/16 x 12-7/8inch (1013.0 x 259.0 x 328.0mm ).

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 ELAC Uni-Fi FS U5 Slim is approximately 849.5cm2 / 131.7inch2.

To get a better perspective on the real life size of ELAC Uni-Fi FS U5 Slim, let's compare it with a standard size Compact Disc which has a diameter of 4.7inch (120mm).

ELAC Uni-Fi FS U5 Slim Real Life Body Size Comparison
ELAC Uni-Fi FS U5 Slim Speaker Size Compared to a Compact Disc

Here we place the ELAC Uni-Fi FS U5 Slim virtually next to a standard width amplifier and turntable on a media center to get a better idea about the size.

ELAC Uni-Fi FS U5 Slim placed next to a Media Stand
ELAC Uni-Fi FS U5 Slim Floor-standing Speaker next to a Media Stand

Weight

The ELAC Uni-Fi FS U5 Slim weighs 0.00kg / 0lbs per piece. Here is a comparison of how Uni-Fi FS U5 Slim's weight compares with the average, max and min weights in its class.

Weight
All Floor-standing Speakers
ELAC Uni-Fi FS U5 Slim
Min
Average
Max
Weight
Floor-standing Speakers under $2000
ELAC Uni-Fi FS U5 Slim
Min
Average
Max

Cabinet type and Materials

ELAC Uni-Fi FS U5 Slim has a Bass Reflex type cabinet and a MDF/Vinyl finish. Bass Reflex type loudspeakers (aka Ported, Vented or Reflex Port) have enclosures that uses a port, hole or vent cut into the cabinet. Ported designs are generally more efficient than the Sealed designs.

Speaker Feet

ELAC Uni-Fi FS U5 Slim comes with the parts below which you can use to secure your loudspeaker on the surface that you are putting on:
  • 4 Spike-feet
  • 4 Protective discs
  • 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.

    Available colors

    ELAC Uni-Fi FS U5 Slim is available in Black.

    Does the ELAC Uni-Fi FS U5 Slim come with a Grille?

    Uni-Fi FS U5 Slim comes with grilles. The purpose of the grille is to protect the delicate driver elements from external impacts while still allowing the sound to pass as clearly as possible.

    What's in the Box of ELAC Uni-Fi FS U5 Slim?

    Here are the items that are included inside the box of Uni-Fi FS U5 Slim:
  • Floorstanding loudspeaker
  • Grille
  • 2 Stabilizer-bars
  • 4 Spike-feet
  • 4 Protective discs
  • 4 Knobs
  • 6 Machine screws
  • 4 Hex-nuts
  • Hex-key
  • Operating Instructions
  • Recommended Accessories

    Here is a list of accessories that we think you may need for the ELAC Uni-Fi FS U5 Slim.

    • 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 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.

    Warranty

    3 Years of parts warranty and 3 Years of labor warranty is generally provided by the manufacturer.

    ELAC Uni-Fi FS U5 Slim Alternatives in Passive Floor-standing Speakers
    Model Type Sensitivity Impedance Frequency
    ELAC Uni-Fi 2.0 UF52
    Compare
    3-way 85 dB 6 ohms 42-35k Hz
    ELAC Uni-Fi BS U5 Slim
    Compare
    3-way 85 dB 4 ohms 46-25k Hz
    ELAC Uni-Fi UB5
    Compare
    3-way 85 dB 4 ohms 46-25k Hz
    ELAC Uni-Fi CC U5 Slim
    Compare
    3-way 85 dB 4 ohms 48-25k Hz
    ELAC Uni-Fi 2.0 UB52
    Compare
    3-way 85 dB 6 ohms 46-35k Hz
    ELAC Uni-Fi 2.0 UC52
    Compare
    3-way 85 dB 6 ohms 48-35k Hz
    Klipsch R-820F
    Compare
    2-way 97 dB 8 ohms 35-21k Hz
    KLH Kendall
    Compare
    3-way 96 dB 8 ohms 25-23k Hz
    Frequently Asked Questions about ELAC Uni-Fi FS U5 Slim
    What is the External Dimensions of ELAC Uni-Fi FS U5 Slim
    What is the Speaker Sensitivity of ELAC Uni-Fi FS U5 Slim
    is the ELAC Uni-Fi FS U5 Slim an easy to drive speaker?

    ELAC Uni-Fi FS U5 Slim Detailed Specifications

    General
    BrandELAC
    Full Model NameELAC Uni-Fi FS U5 Slim
    Speaker Type3-way Floor-standing
    Power Range40-140 watts
    Sensitivity85 dB
    Impedance4 ohms
    Frequency Response42-25k Hz
    DRIVERS
    Woofer Size5.25-inch
    Woofer CompositionAluminum
    Woofer SurroundRubber
    Tweeter Size1-inch
    Tweeter Typesoft dome
    Midrange Size4-inch

    CONNECTIONS
    Connector TypeBinding post
    Biamp InputsNo
    PHYSICAL SPECS
    Height1013.0mm ( 39-7/8-inch)
    Width259.0mm ( 10-3/16-inch)
    Depth328.0mm ( 12-7/8-inch)
    Height1013.0mm ( 39-7/8-inch)
    Weight0.00kg ( 0.00 lbs)
    EnclosureBass Reflex
    FinishMDF/Vinyl
    Available ColorsBlack
    Mounting BracketNo
    GrilleYes
    Moisture ResistanceNo
    OTHER
    Handheld RemoteNo
    Parts Warranty3 Years
    Labor Warranty3 Years
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