In this review, we will be comparing Debut 2.0 B5.2 and Uni-Fi UB5, two Passive Bookshelf speakers by ELAC Let's have a brief look at the main features
of ELAC Debut 2.0 B5.2 and ELAC Uni-Fi UB5 first before getting into our more
detailed comparison.
What size room are the ELAC Debut 2.0 B5.2 and ELAC Uni-Fi UB5 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 Debut 2.0 B5.2 and ELAC Uni-Fi UB5 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
One of the fundamental differences between these two speakers is that Debut 2.0 B5.2 is a 2-way design whereas the Uni-Fi UB5 is a 3-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 Debut 2.0 B5.2 |
ELAC Uni-Fi UB5 |
|
Driver Setup
|
2-way
|
3-way
|
|
Tweeter
|
1-inch
|
1-inch
|
|
Midrange
|
- |
1 x 4-inch |
|
Woofer
|
1 x 5.25-inch
|
1 x 5.25-inch
|
Debut 2.0 B5.2 features a 1" Cloth Soft-dome Tweeter and 1 x 5.25" Woven Aramid-Fiber Woofer with a Crossover frequency at 2200Hz. On the other hand, the 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.
Frequency Response
Debut 2.0 B5.2 has a frequency range of 46-35k Hz whereas Uni-Fi UB5 has a frequency range of 46-25k Hz.
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
Debut 2.0 B5.2 is a 6 ohms speaker compared to the Uni-Fi UB5 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 UB5 can provide this impedance level.
These two speakers also have different sensitivity levels. Debut 2.0 B5.2 sensitivity is rated at 86 dB and the Uni-Fi UB5's is rated at 85 dB. This 1 dB difference makes the ELAC Debut 2.0 B5.2 a more sensitive speaker compared to ELAC Uni-Fi UB5, hence will play louder with the same amount of watts.
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.
Debut 2.0 B5.2 can handle a max power of 140 watts RMS from the amp the whereas Debut 2.0 B5.2 has a max power handling value of 120 watts RMS , 20 watts less than the Uni-Fi UB5.
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
Debut 2.0 B5.2 features Post type posts and Uni-Fi UB5 has a Post type posts. None of these speakers feature bi-amping/bi-wiring.
ELAC Debut 2.0 B5.2's 5-Way Metal post terminals
ELAC Uni-Fi UB5's Post terminals
Cabinet Type and Port Position
Debut 2.0 B5.2 has a front firing port whereas Uni-Fi UB5 has a rear firing ports. ELAC Debut 2.0 B5.2's front-firing port gives more flexibility in placement in regards to proximity to walls compared to ELAC Uni-Fi UB5 with its rear-firing port.
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 Debut 2.0 B5.2's and ELAC Uni-Fi UB5's external dimensions. ELAC Debut 2.0 B5.2 has external dimensions of 341.0 x 180.0 x 234.0mm ( 13.4 x 7.0 x 9.2inch) whereas ELAC Uni-Fi UB5 has external dimensions of 324.0 x 200.0 x 273.0mm ( 12.7 x 7.8 x 10.7inch) .
ELAC Debut 2.0 B5.2 is 20mm narrower and 39mm less deeper than ELAC Uni-Fi UB5 but it is also 17mm taller.
Below you can see the front view size comparison of ELAC Debut 2.0 B5.2 and ELAC Uni-Fi UB5 in scale.
Comparison image of ELAC Debut 2.0 B5.2 and ELAC Uni-Fi UB5 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 ELAC Debut 2.0 B5.2 is approximately 421.2cm2 / 65.3inch2 and base area of the ELAC Uni-Fi UB5 is approximately 546.0cm2 / 84.6inch2. The Debut 2.0 B5.2 requires 23% less surface area than the Uni-Fi UB5 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:
Size Comparison image of ELAC Debut 2.0 B5.2 and ELAC Uni-Fi UB5 on a Media Console
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 Debut 2.0 B5.2 weighs 5.90kg / 13lbs and the ELAC Uni-Fi UB5 weighs 7.48kg / 16.5lbs. This makes the Uni-Fi UB5 27% heavier than the Debut 2.0 B5.2.
Here is a comparison of how Debut 2.0 B5.2 and Uni-Fi UB5'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 Debut 2.0 B5.2?
Here are the items that are included inside the box of Debut 2.0 B5.2:
2 Bookshelf loudspeakers 2 Grilles Operating Instructions
What's in the Box of ELAC Uni-Fi UB5?
Here are the items that come with the Uni-Fi UB5:
2 Bookshelf loudspeakers 2 Grilles Operating Instructions
 Sensitivity |
86 dB
vs
85 dB
|
Play louder with same amount of amplification power |
 Nominal Impedance |
6 ohms
vs
4 ohms
|
Less selective with amplifiers |
 High Frequency Response |
35k Hz
vs
25k Hz
|
Generates higher frequency |
 Port Position |
Front
vs
Rear
|
Gives more flexibility placing close to walls |
 Base Surface Area |
421cm2 (180x234mm)
vs
546cm2 (200x273mm)
|
Takes less floor space |
 Max Input Power |
140 watts
vs
120 watts
|
Handle more power from your amplifier |
 Driver Setup |
3-way
vs
2-way
|
Have a dedicated mid-range driver |
 Height |
324mm
vs
341mm
|
Easier to fit in smaller spaces |
| General |
ELAC Debut 2.0 B5.2 |
ELAC Uni-Fi UB5 |
| Brand |
ELAC |
ELAC |
| Speaker Type |
Bookshelf speakers |
Bookshelf speakers |
| Power Range |
120 watts |
40-140 watts |
| Sensitivity |
86 dB |
85 dB |
| Impedance |
6 ohms |
4 ohms |
| Frequency Response |
46-35k Hz |
46-25k Hz |
Drivers |
|
|
| Woofer Quantity |
1 |
1 |
| Woofer Size |
5.25" |
5.25" |
| Woofer Composition |
Woven Aramid-Fiber |
Aluminum |
| Woofer Surround Material |
Rubber |
Rubber |
| Tweeter Size |
1" |
1" |
| Tweeter Type |
Soft-dome |
Soft-dome |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
4" |
| Crossover Frequency |
2200Hz |
270Hz and 2700Hz |
| Firing Direction |
front |
rear |
Physical Specs |
|
|
| Height |
341.0mm (13.4") |
324.0mm (12.8") |
| Width |
180.0mm (7.1") |
200.0mm (7.9") |
| Depth |
234.0mm (9.2") |
273.0mm (10.7") |
| Weight |
5.90kg (13lbs) |
7.48kg (16.5lbs) |
| Enclosure |
Bass Reflex |
Bass Reflex |
| Finish |
CARB2 Rated MDF/Vinyl |
MDF/Vinyl |
| Available Colors |
Black |
Black |
| Mounting Bracket |
No |
No |
| Recommended Stand Height |
24-28" |
24-31" |
| Grille |
Yes |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
| Biamp Inputs |
No |
No |
Other |
|
|
| Parts Warranty |
3 Years |
3 Years |
| Labor Warranty |
3 Years |
3 Years |