In this review, we will be comparing Prime Tower and Uni-Fi FS U5 Slim, two Passive Floor-standing speakers from SVS and ELAC. Let's have a brief look at the main features
of SVS Prime Tower and ELAC Uni-Fi FS U5 Slim first before getting into our more
detailed comparison.
What size room are the SVS Prime Tower and ELAC Uni-Fi FS U5 Slim speakers good for?
The size of the room in which you are planning to use these loudspeakers is an important decision factor. Here we have compared their suitability to various sizes of environments considering their size and max power parameters:
In the following sections, we will get into more detail in order to better understand how the SVS Prime Tower and ELAC Uni-Fi FS U5 Slim compare and hopefully end up with enough arguments to decide which one of these loudspeakers is the better choice for you.
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Drivers
Both Prime Tower and Uni-Fi FS U5 Slim are 3-way speakers.
| Driver |
SVS Prime Tower |
ELAC Uni-Fi FS U5 Slim |
|
Driver Setup
|
3-way
|
3-way
|
|
Tweeter
|
1-inch
|
1-inch
|
|
Midrange
|
1 x 4.5-inch |
1 x 4-inch |
|
Woofer
|
2 x 6.5-inch
|
3 x 5.25-inch
|
Prime Tower features a 1" aluminum dome Tweeter , a 4.5" Midrange and 2 x 6.5" Polypropylene Woofer with a Crossover frequency at 350Hz and 2100Hz. On the other hand, the Uni-Fi FS U5 Slim features a 1" soft dome Tweeter , a 4" Midrange and 3 x 5.25" Aluminum Woofer .
Frequency Response
Prime Tower has a frequency range of 30-25k Hz whereas Uni-Fi FS U5 Slim has a frequency range of 42-25k Hz. With a minimum frequency of 30Hz, the Prime Tower can go significantly deeper on the low side and provide stronger bass compared to the Uni-Fi FS U5 Slim's min frequency of 42Hz.
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
High Frequency
Floor-standing Speakers
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.
Impedance and Sensitivity
Prime Tower is a 8 ohms speaker compared to the Uni-Fi FS U5 Slim which has a nominal impedance of 4 ohms. Lower impedance speakers, especially the ones that are rated at 4 ohms may put more pressure on the amplifier unit especially when played at high volume levels, so make sure the amp you pair with the Uni-Fi FS U5 Slim can provide this impedance level.
These two speakers also have different sensitivity levels. Prime Tower sensitivity is rated at 87 dB and the Uni-Fi FS U5 Slim's is rated at 85 dB. This 2 dB difference makes the SVS Prime Tower a more sensitive speaker compared to ELAC Uni-Fi FS U5 Slim, hence will play louder with the same amount of watts.
Sensitivity
Floor-standing Speakers
Power Range
Power
range is the range of input power in watts RMS that a loudspeaker is designed to handle. While using an amplifier within this range ensures the nominal performance , inputting a power that is higher than the max wattage can result in a damaged speaker.
Prime Tower can handle a max power of 250 watts RMS from the amp the whereas Uni-Fi FS U5 Slim has a max power handling value of 140 watts RMS, 110 watts less than the Prime Tower.
Keep in mind that a higher max power handling value doesn't necessarily make that a louder speaker
compared to a lower max handling speaker. Loudness or the sound level is also impacted by parameters
such as Impedance, sensitivity and system efficiencies.
Input Type and Bi-Amping / Bi-Wiring
Prime Tower features Binding post type posts and Uni-Fi FS U5 Slim has a Binding post type posts. None of these speakers feature bi-amping/bi-wiring.
SVS Prime Tower's 5-Way post terminals
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 SVS Prime Tower's and ELAC Uni-Fi FS U5 Slim's external dimensions. SVS Prime Tower has external dimensions of 931.0 x 204.0 x 297.0mm ( 36-5/8 x 8 x 11-11/16inch) whereas ELAC Uni-Fi FS U5 Slim has external dimensions of 1013.0 x 259.0 x 328.0mm ( 39-7/8 x 10-3/16 x 12-7/8inch) .
ELAC Uni-Fi FS U5 Slim is clearly the larger of the two speakers. Its body is 55mm wider, 82mm taller and 31mm deeper than SVS Prime Tower.
Below you can see the front view size comparison of SVS Prime Tower and ELAC Uni-Fi FS U5 Slim in scale.
Comparison image of SVS Prime Tower and ELAC Uni-Fi FS U5 Slim Size and External Dimensions
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 SVS Prime Tower is approximately 605.9cm2 / 93.9inch2 and base area of the ELAC Uni-Fi FS U5 Slim is approximately 849.5cm2 / 131.7inch2. The Prime Tower requires 29% less surface area than the Uni-Fi FS U5 Slim which gives it a small advantage on placement in tight spaces.
Weight Comparison The weight of a loudspeaker can become an important factor if you need to move and reposition the unit often. Weight of a speaker can also "sometimes" be an indicator of the rigidity of the enclosure and the quality of the internal components used. The SVS Prime Tower weighs 18.23kg / 40.1lbs and the ELAC Uni-Fi FS U5 Slim weighs 0.00kg / 0lbs. This makes the Prime Tower inf% heavier than the Uni-Fi FS U5 Slim.
Here is a comparison of how Prime Tower and Uni-Fi FS U5 Slim's weights compare with the average, max and min weights in Passive Floor-standing class.
Weight
All Floor-standing Speakers
What's in the Box of SVS Prime Tower?
Here are the items that are included inside the box of Prime Tower:
Floorstanding loudspeakerGrille (pre-installed)4 Elastomer isolation feet (pre-installed)4 Spike feet4 Nuts4 Protective discsOwners ManualSVS brochureOnline Product Registration Card
What's in the Box of ELAC Uni-Fi FS U5 Slim?
Here are the items that come with the Uni-Fi FS U5 Slim:
Floorstanding loudspeakerGrille2 Stabilizer-bars4 Spike-feet4 Protective discs4 Knobs6 Machine screws4 Hex-nutsHex-keyOperating Instructions
 Max Input Power |
250 watts
vs
140 watts
|
Handle more power from your amplifier |
 Sensitivity |
87 dB
vs
85 dB
|
Play louder with same amount of amplification power |
 Nominal Impedance |
8 ohms
vs
4 ohms
|
Less selective with amplifiers |
 Woofer Size |
6.5 inches
vs
5.25 inches
|
Larger woofer |
| Low Frequency Response |
30 Hz
vs
42 Hz
|
Generates deeper bass |
 Height |
931mm
vs
1013mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
605cm2 (204x297mm)
vs
849cm2 (259x328mm)
|
Takes less floor space |
 Price per pair* |
1400USD
vs
1720USD
|
costs less (*prices may change depending on the seller, location and time) |
| Number of Woofers |
3
vs
2
|
More woofers |
| General |
SVS Prime Tower |
ELAC Uni-Fi FS U5 Slim |
| Brand |
SVS |
ELAC |
| Speaker Type |
Floor-standing speaker |
Floor-standing speaker |
| Power Range |
20-250 watts |
40-140 watts |
| Sensitivity |
87 dB |
85 dB |
| Impedance |
8 ohms |
4 ohms |
| Frequency Response |
30-25k Hz |
42-25k Hz |
Drivers |
|
|
| Woofer Quantity |
2 |
3 |
| Woofer Size |
6.5" |
5.25" |
| Woofer Composition |
Polypropylene |
Aluminum |
| Woofer Surround Material |
Rubber |
Rubber |
| Tweeter Size |
1" |
1" |
| Tweeter Type |
dome |
soft dome |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
4.5" |
4" |
| Crossover Frequency |
350Hz and 2100Hz |
n/a |
| Firing Direction |
rear |
n/a |
Physical Specs |
|
|
| Height |
931.0mm (36.7") |
1013.0mm (39.9") |
| Width |
204.0mm (8") |
259.0mm (10.2") |
| Depth |
297.0mm (11.7") |
328.0mm (12.9") |
| Weight |
18.23kg (40.1lbs) |
0.00kg (0lbs) |
| Enclosure |
Bass Reflex |
Bass Reflex |
| Finish |
MDF/Wood-grain vinyl |
MDF/Vinyl |
| Available Colors |
Black |
Black |
| Grille |
Yes |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
| Biamp Inputs |
No |
No |
Other |
|
|
| Parts Warranty |
5 Years |
3 Years |
| Labor Warranty |
5 Years |
3 Years |