In this review, we will be comparing Uni-Fi UB5 and L100, two Passive Bookshelf speakers from ELAC and Polk Audio. Let's have a brief look at the main features
of ELAC Uni-Fi UB5 and Polk L100 first before getting into our more
detailed comparison.
What size room are the ELAC Uni-Fi UB5 and Polk L100 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 ELAC Uni-Fi UB5 and Polk L100 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
One of the fundamental differences between these two speakers is that Uni-Fi UB5 is a 3-way design whereas the L100 is a 2-way speaker. 3-way designs utilize a midrange driver in addition to the tweeter and woofer on 2-way designs. Designing a crossover for a 3-way speaker is a complicated process and generally increases the overall cost of the speaker.
Driver |
ELAC Uni-Fi UB5 |
Polk L100 |
Driver Setup
|
3-way
|
2-way
|
Tweeter
|
1-inch
|
1-inch
|
Midrange
|
1 x 4-inch |
- |
Woofer
|
1 x 5.25-inch
|
1 x 5.25-inch
|
Uni-Fi UB5 features a 1" Soft-dome Tweeter , a 4" Midrange and 1 x 5.25" Aluminum Woofer with a Crossover frequency at 270Hz and 2700Hz. On the other hand, the L100 features a 1" Ring Radiator Tweeter and 1 x 5.25" Polypropylene Woofer with a Crossover frequency at 2900Hz.
Frequency Response
Uni-Fi UB5 has a frequency range of 46-25k Hz whereas L100 has a frequency range of 57-38k Hz. With a minimum frequency of 46Hz, the Uni-Fi UB5 can go significantly deeper on the low side and provide stronger bass compared to the L100's min frequency of 57Hz.
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 Bookshelf class in our database.
Low Frequency
Bookshelf Speakers
High Frequency
Bookshelf 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
Uni-Fi UB5 and L100 have the same Impedance of 4 ohms but where they differ is the sensitivity levels. Uni-Fi UB5 sensitivity is rated at 85 dB and the L100's is at 85.5 dB. This 1 dB difference makes the Polk L100 a more sensitive speaker compared to ELAC Uni-Fi UB5, hence will play louder with the same amount of watts.
One thing to keep in mind that the lower impedance speakers, especially the ones that are rated at 4 ohms may put more pressure on the amplifier unit comared to higher impedance speakers especially at high volume levels, so make sure the amp you pair with the Uni-Fi UB5 and the Uni-Fi UB5 can provide this impedance level.
Sensitivity
Bookshelf 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.
Uni-Fi UB5 can handle a max power of 160 watts RMS from the amp the whereas Uni-Fi UB5 has a max power handling value of 140 watts RMS , 20 watts less than the L100.
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
Uni-Fi UB5 features Post type posts and L100 has a Post type posts. None of these speakers feature bi-amping/bi-wiring.
Cabinet Type and Port Position
Both Uni-Fi UB5 and L100 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 ELAC Uni-Fi UB5's and Polk L100's external dimensions. ELAC Uni-Fi UB5 has external dimensions of 324.0 x 200.0 x 273.0mm ( 12.7 x 7.8 x 10.7inch) whereas Polk L100 has external dimensions of 348.0 x 201.0 x 288.0mm ( 13-11/16 x 7-7/8 x 11-5/16inch) .
Polk L100 is clearly the larger of the two speakers. Its body is 1mm wider, 24mm taller and 15mm deeper than ELAC Uni-Fi UB5.
Below you can see the front view size comparison of ELAC Uni-Fi UB5 and Polk L100 in scale.
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 ELAC Uni-Fi UB5 is approximately 546.0cm2 / 84.6inch2 and base area of the Polk L100 is approximately 578.9cm2 / 89.7inch2. The Uni-Fi UB5 requires 6% less surface area than the L100 which gives it a small advantage on placement in tight spaces.
Here is an another comparison that shows both speakers on a BDI Octave Media Cabinet, next to a standard size amplifier and turntable in scale:
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 ELAC Uni-Fi UB5 weighs 7.48kg / 16.5lbs and the Polk L100 weighs 7.68kg / 16.9lbs. This makes the L100 3% heavier than the Uni-Fi UB5.
Here is a comparison of how Uni-Fi UB5 and L100's weights compare with the average, max and min weights in Passive Bookshelf class.
Weight
All Bookshelf Speakers
What's in the Box of ELAC Uni-Fi UB5?
Here are the items that are included inside the box of Uni-Fi UB5:
2 Bookshelf loudspeakers 2 Grilles Operating Instructions
What's in the Box of Polk L100?
Here are the items that come with the L100:
2 Bookshelf loudspeakers 2 Grilles Cleaning cloth Owners Manual Online Registration
Driver Setup |
3-way
vs
2-way
|
Have a dedicated mid-range driver |
Low Frequency Response |
46 Hz
vs
57 Hz
|
Generates deeper bass |
Height |
324mm
vs
348mm
|
Easier to fit in smaller spaces |
Base Surface Area |
546cm2 (200x273mm)
vs
578cm2 (201x288mm)
|
Takes less floor space |
Max Input Power |
160 watts
vs
140 watts
|
Handle more power from your amplifier |
Sensitivity |
86 dB
vs
85 dB
|
Play louder with same amount of amplification power |
High Frequency Response |
38k Hz
vs
25k Hz
|
Generates higher frequency |
General |
ELAC Uni-Fi UB5 |
Polk Audio Legend L100 |
Brand |
ELAC |
Polk Audio |
Speaker Type |
Bookshelf speakers |
Bookshelf speakers |
Power Range |
40-140 watts |
30-160 watts |
Sensitivity |
85 dB |
85.5 dB |
Impedance |
4 ohms |
4 ohms |
Impedance |
n/a |
3 ohms |
Frequency Response |
46-25k Hz |
57-38k Hz |
Drivers |
|
|
Woofer Quantity |
1 |
1 |
Woofer Size |
5.25" |
5.25" |
Woofer Composition |
Aluminum |
Polypropylene |
Woofer Surround Material |
Rubber |
Rubber |
Tweeter Size |
1" |
1" |
Tweeter Type |
Soft-dome |
Ring Radiator |
Aimable Tweeter |
No |
No |
Midrange Driver |
4" |
No |
Crossover Frequency |
270Hz and 2700Hz |
2900Hz |
Firing Direction |
rear |
rear |
Physical Specs |
|
|
Height |
324.0mm (12.8") |
348.0mm (13.7") |
Width |
200.0mm (7.9") |
201.0mm (7.9") |
Depth |
273.0mm (10.7") |
288.0mm (11.3") |
Weight |
7.48kg (16.5lbs) |
7.68kg (16.9lbs) |
Enclosure |
Bass Reflex |
Bass Reflex |
Finish |
MDF/Vinyl |
MDF/Wood veneer |
Available Colors |
Black |
Brown Walnut, Black Ash |
Mounting Bracket |
No |
No |
Recommended Stand Height |
24-31" |
24-28" |
Grille |
Yes |
Yes |
Moisture Resistancy |
No |
No |
Connections |
|
|
Biamp Inputs |
No |
No |
Other |
|
|
Parts Warranty |
3 Years |
5 Years |
Labor Warranty |
3 Years |
5 Years |