In this review, we will be comparing Nero MB5 and 606 S2 AE, two Passive Bookshelf speakers from OSD and Bowers Wilkins.
Let's have a brief look at the main features
of OSD Nero MB5 and B&W 606 S2 first before getting into our more
detailed comparison.
OSD Nero MB5 Key Specs
- 2-way Design
- 1" Soft-Dome Tweeter
- 5.25" Fiberglass Woofer
- 50-30k Hz Frequency Response
- 90 dB Sensitivity
- Impedance: 4ohms
- Power Range:100watts
- Weight:5.45kg
- Dimensions (H x W x D): 304.0" x 7-5/16" x 9-5/8"( 304.0 x 177.8 x 245.0mm )
B&W 606 S2 Key Specs
- 2-way Design
- 1" Decoupled Double Dome Tweeter
- 6.5" Continuum Woofer
- 52-28k Hz Frequency Response
- 88 dB Sensitivity
- Impedance: 8ohms
- Power Range:30-120watts
- Weight:6.90kg
- Dimensions (H x W x D): 347.0" x 7-1/2" x 12-13/16"( 347.0 x 191.0 x 326.0mm )
What size room are the OSD Nero MB5 and B&W 606 S2 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 |
B&W 606 S2 |
| Near-field |
Average |
Poor |
| Small Room |
Good |
Average |
| Mid-size Room |
Average |
Good |
| Large Room |
Poor |
Average |
| Very Large Room |
Bad |
Poor |
(* 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.)
In the following sections, we will get into more detail in order to better understand how the OSD Nero MB5 and B&W 606 S2 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
Both Nero MB5 and 606 S2 AE are 2-way speakers.
| Driver |
OSD Nero MB5 |
B&W 606 S2 |
|
Driver Setup
|
2-way
|
2-way
|
|
Tweeter
|
1-inch
|
1-inch
|
|
Midrange
|
- |
- |
|
Woofer
|
1 x 5.25-inch
|
1 x 6.5-inch
|
Nero MB5 features a 1" Soft-Dome Tweeter and 1 x 5.25" Fiberglass Woofer . On the other hand, the 606 S2 AE features a 1" Aluminum Decoupled Double Dome Tweeter and 1 x 6.5" Continuum Woofer .
Frequency Response
Nero MB5 has a frequency range of 50-30k Hz whereas 606 S2 AE has a frequency range of 52-28k Hz. With a minimum frequency of 50Hz, the Nero MB5 can go slightly deeper then the 606 S2 AE's min frequency of 52Hz.
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
Nero MB5 is a 4 ohms speaker compared to the 606 S2 AE which has a nominal impedance of 8 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 Nero MB5 can provide this impedance level.
These two speakers also have different sensitivity levels. Nero MB5 sensitivity is rated at 90 dB and the 606 S2 AE's is rated at 88 dB. This 2 dB difference makes the OSD Nero MB5 a more sensitive speaker compared to B&W 606 S2, 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.
Nero MB5 can handle a max power of 120 watts RMS from the amp the whereas Nero MB5 has a max power handling value of 100 watts RMS , 20 watts less than the 606 S2 AE.
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
606 S2 AE features Binding post posts which make bi-amping or bi-wiring possible. Nero MB5 has a --- which doesn't feature bi-amping/bi-wiring.
B&W 606 S2's Binding post terminals allows Bi-amping or bi-wiring
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 OSD Nero MB5's and B&W 606 S2'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 B&W 606 S2 has external dimensions of 347.0 x 191.0 x 326.0mm ( 13-5/8 x 7-1/2 x 12-13/16inch) .
B&W 606 S2 is clearly the larger of the two speakers. Its body is 13.2mm wider, 43mm taller and 81mm deeper than OSD Nero MB5.
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 B&W 606 S2 is approximately 622.7cm2 / 96.5inch2. The Nero MB5 requires 30% less surface area than the 606 S2 AE 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 B&W 606 S2 weighs 6.90kg / 15.2lbs. This makes the 606 S2 AE 27% heavier than the Nero MB5.
Here is a comparison of how Nero MB5 and 606 S2 AE'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 loudspeakers2 Grilles
What's in the Box of B&W 606 S2?
Here are the items that come with the 606 S2 AE:
2 Bookshelf loudspeakers 2 Grilles 2 Two-piece foam port plugs 8 Self-adhesive rubber feet 4 Jumper-straps (pre-installed) Manual Bowers & Wilkins brochure Warranty Information
 Sensitivity |
90 dB
vs
88 dB
|
Play louder with same amount of amplification power |
 Low Frequency Response |
50 Hz
vs
52 Hz
|
Generates deeper bass |
 High Frequency Response |
30k Hz
vs
28k Hz
|
Generates higher frequency |
 Height |
304mm
vs
347mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
435cm2
vs
622cm2
|
Takes less floor space |
 Max Input Power |
120 watts
vs
100 watts
|
Handle more power from your amplifier |
 Nominal Impedance |
8 ohms
vs
4 ohms
|
Less selective with amplifiers |
|
Woofer Size |
6.5 inches
vs
5.25 inches
|
Larger woofer |
| General |
OSD Nero MB5 |
Bowers & Wilkins 606 S2 Anniversary Edition |
| Brand |
OSD |
Bowers Wilkins |
| Speaker Type |
Bookshelf speakers |
Bookshelf speakers |
| Power Range |
100 watts |
30-120 watts |
| Sensitivity |
90 dB |
88 dB |
| Impedance |
4 ohms |
8 ohms |
| Impedance |
n/a |
3.7 ohms |
| Frequency Response |
50-30k Hz |
52-28k Hz |
Drivers |
|
|
| Woofer Quantity |
1 |
1 |
| Woofer Size |
5.25" |
6.5" |
| Woofer Composition |
Fiberglass |
Continuum |
| Woofer Surround Material |
--- |
Rubber |
| Tweeter Size |
1" |
1" |
| Tweeter Type |
Soft-Dome |
Decoupled Double Dome |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Firing Direction |
n/a |
rear |
Physical Specs |
|
|
| Height |
304.0mm (12") |
347.0mm (13.7") |
| Width |
177.8mm (7") |
191.0mm (7.5") |
| Depth |
245.0mm (9.6") |
326.0mm (12.8") |
| Weight |
5.45kg (12lbs) |
6.90kg (15.2lbs) |
| Enclosure |
Bass Reflex |
Bass Reflex |
| Finish |
--- |
MDF/Vinyl |
| Available Colors |
Black |
Matte Black, Matte White, Oak, Red Cherry |
| Mounting Bracket |
|
No |
| Recommended Stand Height |
---" |
24-26" |
| Grille |
Yes |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
| Biamp Inputs |
--- |
Yes |
Other |
|
|
| Parts Warranty |
5 Years |
5 Years |
| Labor Warranty |
5 Years |
5 Years |