In this review, we will be comparing Nero MB5 and Elysian 2, two Passive Bookshelf speakers from OSD and Wharfedale.
Let's have a brief look at the main features
of OSD Nero MB5 and Wharfedale Elysian 2 first before getting into our more
detailed comparison.
| Key Specs | OSD Nero MB5 | Wharfedale Elysian 2 |
|---|
| Brand | OSD
United States · founded 2003 | Wharfedale
United Kingdom · founded 1932 |
|---|
| Design | 2-way | 3-way |
|---|
| Tweeter | 1" Soft-Dome | 27x90mm" AMT (Ribbon) |
|---|
| Midrange | — | 6" |
|---|
| Woofer | 5.25" Fiberglass | 8.5" Coated Fiberglass |
|---|
| Frequency response | 50-30k Hz | 35-22k Hz |
|---|
| Sensitivity | 90 dB | 89 dB |
|---|
| Impedance | 4 ohms | 4 ohms |
|---|
| Power range | 100 watts | 25-250 watts |
|---|
| Weight | 5.45kg / 12lbs | 30.50kg / 67.1lbs |
|---|
| Dimensions (H x W x D) | 11-15/16" x 7-5/16" x 9-5/8"
304.0 x 177.8 x 245.0mm | 27.5" x 13.1" x 18.1"
700.0 x 334.0 x 462.0mm |
|---|
What size room are the OSD Nero MB5 and Wharfedale Elysian 2 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:
| Listening Environment* |
OSD Nero MB5 |
Wharfedale Elysian 2 |
| Near-field |
Average |
Poor |
| Small Room |
Good |
Poor |
| Mid-size Room |
Average |
Good |
| Large Room |
Poor |
Good |
| Very Large Room |
Bad |
Average |
(* 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.)
The sections below take each area in turn: drivers, frequency response, physical size and what you get in the box.
Drivers
One of the fundamental differences between these two speakers is that Nero MB5 is a 2-way design whereas the Elysian 2 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.
OSD Nero MB5Wharfedale Elysian 2
TweeterMidrangeWoofer
Front view, drawn to scale - cabinets and drivers share one scale, so sizes are directly comparable. Hover a driver for its size.
| Driver |
OSD Nero MB5 |
Wharfedale Elysian 2 |
|
Driver Setup
|
2-way
|
3-way
|
|
Tweeter
|
1-inch
|
27x90mm-inch
|
|
Midrange
|
- |
1 x 6-inch |
|
Woofer
|
1 x 5.25-inch
|
1 x 8.5-inch
|
Nero MB5 features a 1" Soft-Dome Tweeter and 1 x 5.25" Fiberglass Woofer. On the other hand, the Elysian 2 features a 27x90mm" AMT (Ribbon) Tweeter, a 6" Midrange and 1 x 8.5" Coated Fiberglass Woofer with a Crossover frequency at 360Hz and 2900Hz.
Frequency Response
Nero MB5 has a frequency range of 50-30k Hz whereas Elysian 2 has a frequency range of 35-22k Hz. With a minimum frequency of 35Hz, the Elysian 2 can go significantly deeper on the low side and provide stronger bass compared to the Nero MB5's min frequency of 50Hz.
The graph below depicts how these two speakers compare with the max, min and average Low Frequency values of other speakers in the Bookshelf class in our database.
Low Frequency
Bookshelf Speakers
Neither pair reaches down to 20Hz, the usual definition of full-range, which is normal for speakers of this size. If you want the bottom octave for movies or bass-heavy music, add a subwoofer to whichever you choose. Visit our Powered Subwoofers section to find out more about the available options.
Impedance and Sensitivity
Nero MB5 and Elysian 2 have the same Impedance of 4 ohms but where they differ is the sensitivity levels. Nero MB5 sensitivity is rated at 90 dB and the Elysian 2's is at 89 dB. This 1 dB difference makes the OSD Nero MB5 a more sensitive speaker compared to Wharfedale Elysian 2, 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 Nero MB5 and the Nero MB5 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. Staying
within that range gives nominal performance; driving the speaker beyond its maximum wattage can damage it.
Elysian 2 can handle a max power of 250 watts RMS, whereas Nero MB5 has a max power handling value of 100 watts RMS, 150 watts less than the Elysian 2.
Note that higher power handling does not make a speaker louder: that depends mainly on
sensitivity and impedance. The calculator below shows how loud each of these actually plays
on a real amplifier.
Which plays louder on your amplifier?
Starting with a popular amplifier - change it to the one you own, or any you are
considering, and watch both numbers move.
Physical Specs
The size of a speaker can sometimes be an important decision factor due to space constraints or in some cases purely for esthetic reasons. In this section, we are going to compare OSD Nero MB5's and Wharfedale Elysian 2's external dimensions. OSD Nero MB5 has external dimensions of 304.0 x 177.8 x 245.0mm (11-15/16inch x 7-5/16inch x 9-5/8inch) whereas Wharfedale Elysian 2 has external dimensions of 700.0 x 334.0 x 462.0mm (27.5 x 13.1 x 18.1inch).
Wharfedale Elysian 2 is clearly the larger of the two speakers. Its body is 156.2mm wider, 396mm taller and 217mm deeper than OSD Nero MB5.
Below you can see the front view size comparison of OSD Nero MB5 and Wharfedale Elysian 2 in scale.
Comparison image of OSD Nero MB5 and Wharfedale Elysian 2 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 OSD Nero MB5 is approximately 435.6cm2 / 67.5inch2 and base area of the Wharfedale Elysian 2 is approximately 1543.1cm2 / 239.2inch2. The Nero MB5 requires 72% less surface area than the Elysian 2 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 OSD Nero MB5 weighs 5.45kg / 12lbs and the Wharfedale Elysian 2 weighs 30.50kg / 67.1lbs. This makes the Elysian 2 460% heavier than the Nero MB5.
Here is a comparison of how Nero MB5 and Elysian 2's weights compare with the average, max and min weights in Passive Bookshelf class.
Weight
All Bookshelf Speakers
What's in the Box of OSD Nero MB5?
Here are the items that are included inside the box of Nero MB5:
- 2 Bookshelf loudspeakers
- 2 Grilles
What's in the Box of Wharfedale Elysian 2?
Here are the items that come with the Elysian 2:
- Stand-mount loudspeaker
- Grille
- 2 Terminal-jumpers (pre-installed)
- User Manual
 Sensitivity |
90 dB
vs
89 dB
|
Play louder with same amount of amplification power |
 High Frequency Response |
30k Hz
vs
22k Hz
|
Generates higher frequency |
 Height |
304mm
vs
700mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
435cm2
vs
1543cm2
|
Takes less floor space |
 Max Input Power |
250 watts
vs
100 watts
|
Handle more power from your amplifier |
 Driver Setup |
3-way
vs
2-way
|
Have a dedicated mid-range driver |
 Woofer Size |
8.5 inches
vs
5.25 inches
|
Larger woofer |
|
Low Frequency Response |
35 Hz
vs
50 Hz
|
Generates deeper bass |
| General |
OSD Nero MB5 |
Wharfedale Elysian 2 |
| Brand |
OSD |
Wharfedale |
| Speaker Type |
Bookshelf speakers |
Bookshelf speakers |
| Power Range |
100 watts |
25-250 watts |
| Sensitivity |
90 dB |
89 dB |
| Impedance |
4 ohms |
4 ohms |
| Frequency Response |
50-30k Hz |
35-22k Hz |
Drivers |
|
|
| Woofer Quantity |
1 |
1 |
| Woofer Size |
5.25" |
8.5" |
| Woofer Composition |
Fiberglass |
Coated Fiberglass |
| Woofer Surround Material |
n/a |
Foamed Rubber |
| Tweeter Size |
1" |
27x90mm" |
| Tweeter Type |
Soft-Dome |
AMT (Ribbon) |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
6" |
| Crossover Frequency |
n/a |
360Hz and 2900Hz |
| Firing Direction |
n/a |
bottom |
Physical Specs |
|
|
| Height |
304.0mm (12") |
700.0mm (27.6") |
| Width |
177.8mm (7") |
334.0mm (13.1") |
| Depth |
245.0mm (9.6") |
462.0mm (18.2") |
| Weight |
5.45kg (12lbs) |
30.50kg (67.1lbs) |
| Enclosure |
Bass Reflex |
Bass Reflex |
| Finish |
n/a |
MDF/Wood-veneer |
| Available Colors |
Black |
Piano Black, Piano Walnut,White |
| Mounting Bracket |
|
No |
| Recommended Stand Height |
n/a |
16-22" |
| Grille |
Yes |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
| Biamp Inputs |
n/a |
Yes |
Other |
|
|
| Parts Warranty |
5 Years |
5 years |
| Labor Warranty |
5 Years |
5 years |
No single best speaker here - they are built to different priorities, and the right one depends on your room, your amplifier and what you listen to.
| Area | Better | Why |
|---|
| Bass | B | Wharfedale Elysian 2 digs deeper - 35Hz against 50Hz. |
| Amplifier needs | evenly matched | Similar sensitivity (90dB vs 89dB) - both want much the same power. |
| Headroom | B | Wharfedale Elysian 2 takes more power (250W vs 100W) - more in hand in a big room. |
| Size | depends | OSD Nero MB5 is easier to place; Wharfedale Elysian 2 is bigger, which usually goes with fuller bass. Your room decides. |
| Expandability | B | Wharfedale Elysian 2: bi-amping. Wharfedale Elysian 2 sits in a wider range (6 models), so a matched surround system is easier later. |
A OSD Nero MB5 B Wharfedale Elysian 2
depends neither is better in the abstract - it turns on your room, your system or how you will use them. Only specs published for both speakers are judged; anything missing on either side is left out rather than guessed.
Which should you choose?
Wharfedale Elysian 2 has the edge on paper, though the margin is not large. The rows marked "depends" may matter more to you than the score does. If a subwoofer is in your plans, the bass gap largely stops mattering - you would be crossing over above 50Hz anyway, so judge these on the other rows instead. Match it to your room: we rate OSD Nero MB5 the better fit for near-field listening and a small room, and Wharfedale Elysian 2 for a mid-size room, a large room and a very large room.
And remember what a spec sheet cannot show: how each looks in your room and whether the finish suits it, what dealer support and warranty are like where you live, and how they actually sound to you. If you can hear them first - ideally with your own music - that will tell you more than any number above.