In this review, we will be comparing Nero MB5 and RP-600M, two Passive Bookshelf speakers from OSD and Klipsch. Let's have a brief look at the main features
of OSD Nero MB5 and Klipsch RP-600M first before getting into our more
detailed comparison.
What size room are the OSD Nero MB5 and Klipsch RP-600M 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 OSD Nero MB5 and Klipsch RP-600M 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 RP-600M are 2-way speakers.
| Driver |
OSD Nero MB5 |
Klipsch RP-600M |
|
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 RP-600M features a 1" Tractrix Horn Tweeter and 1 x 6.5" Cerametallic Woofer with a Crossover frequency at 1500Hz.
Frequency Response
Nero MB5 has a frequency range of 50-30k Hz whereas RP-600M has a frequency range of 45-25k Hz. With a minimum frequency of 45Hz, the RP-600M can go significantly deeper on the low side and provide stronger bass compared to the Nero MB5's min frequency of 50Hz.
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 RP-600M 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 RP-600M's is rated at 96 dB. This 6 dB difference makes the Klipsch RP-600M a more sensitive speaker compared to OSD Nero MB5, 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.
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
RP-600M features Dual binding posts/bi-wire/bi-amp posts which make bi-amping or bi-wiring possible. Nero MB5 has a --- which doesn't feature bi-amping/bi-wiring.
Klipsch RP-600M's Dual binding posts/bi-wire/bi-amp terminals allows Bi-amping or bi-wiring
Klipsch RP-600M Tractrix horn-shaped 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 OSD Nero MB5's and Klipsch RP-600M'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 Klipsch RP-600M has external dimensions of 399.0 x 202.0 x 301.0mm ( 15.7 x 7.9 x 11.8inch) .
Klipsch RP-600M is clearly the larger of the two speakers. Its body is 24.2mm wider, 95mm taller and 56mm 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 Klipsch RP-600M is approximately 608.0cm2 / 94.2inch2. The Nero MB5 requires 28% less surface area than the RP-600M 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 Klipsch RP-600M weighs 7.30kg / 16.1lbs. This makes the RP-600M 34% heavier than the Nero MB5.
Here is a comparison of how Nero MB5 and RP-600M'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 Klipsch RP-600M?
Here are the items that come with the RP-600M:
2 Bookshelf loudspeakers2 Grilles (installed)8 Self-adhesive rubber feet4 Terminal jumpers (installed)User ManualImportant Safety InstructionsWarranty Information
 High Frequency Response |
30k Hz
vs
25k Hz
|
Generates higher frequency |
 Height |
304mm
vs
399mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
435cm2 (177x245mm)
vs
608cm2 (202x301mm)
|
Takes less floor space |
 Sensitivity |
96 dB
vs
90 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 |
45 Hz
vs
50 Hz
|
Generates deeper bass |
| General |
OSD Nero MB5 |
Klipsch Reference Premiere RP-600M |
| Brand |
OSD |
Klipsch |
| Speaker Type |
Bookshelf speakers |
Bookshelf speakers |
| Power Range |
100 watts |
up to 100 watts |
| Sensitivity |
90 dB |
96 dB |
| Impedance |
4 ohms |
8 ohms |
| Frequency Response |
50-30k Hz |
45-25k Hz |
Drivers |
|
|
| Woofer Quantity |
1 |
1 |
| Woofer Size |
5.25" |
6.5" |
| Woofer Composition |
Fiberglass |
Cerametallic |
| Woofer Surround Material |
--- |
Rubber |
| Tweeter Size |
1" |
1" |
| Tweeter Type |
Soft-Dome |
Tractrix Horn |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Crossover Frequency |
n/a |
1500Hz |
| Firing Direction |
n/a |
rear |
Physical Specs |
|
|
| Height |
304.0mm (12") |
399.0mm (15.7") |
| Width |
177.8mm (7") |
202.0mm (8") |
| Depth |
245.0mm (9.6") |
301.0mm (11.9") |
| Weight |
5.45kg (12lbs) |
7.30kg (16.1lbs) |
| Enclosure |
Bass Reflex |
Bass Reflex |
| Finish |
--- |
MDF/Wood-grain vinyl |
| Available Colors |
Black |
Ebony, Walnut, Piano Black |
| Mounting Bracket |
|
No |
| Recommended Stand Height |
---" |
22-26" |
| Grille |
Yes |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
| Biamp Inputs |
--- |
Yes |
Other |
|
|
| Parts Warranty |
5 Years |
5 Years |
| Labor Warranty |
5 Years |
5 Years |