In this review, we will be comparing Opticon 2 MK2 and RP-600M, two Passive Bookshelf speakers from DALI and Klipsch. Let's have a brief look at the main features
of DALI Opticon 2 II and Klipsch RP-600M first before getting into our more
detailed comparison.
What size room are the DALI Opticon 2 II 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 DALI Opticon 2 II 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 Opticon 2 MK2 and RP-600M are 2-way speakers.
| Driver |
DALI Opticon 2 II |
Klipsch RP-600M |
|
Driver Setup
|
2-way
|
2-way
|
|
Tweeter
|
1.125-inch
|
1-inch
|
|
Midrange
|
- |
- |
|
Woofer
|
1 x 6.5-inch
|
1 x 6.5-inch
|
Opticon 2 MK2 features a 1.125" Soft-Dome Tweeter and 1 x 6.5" Wood Fiber Woofer with a Crossover frequency at 2000Hz. 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
Opticon 2 MK2 has a frequency range of 59-25k 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 Opticon 2 MK2's min frequency of 59Hz.
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
Opticon 2 MK2 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 Opticon 2 MK2 can provide this impedance level.
These two speakers also have different sensitivity levels. Opticon 2 MK2 sensitivity is rated at 86.5 dB and the RP-600M's is rated at 96 dB. This 9 dB difference makes the Klipsch RP-600M a more sensitive speaker compared to DALI Opticon 2 II, 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.
Opticon 2 MK2 can handle a max power of 150 watts RMS from the amp the whereas RP-600M has a max power handling value of 100 watts RMS, 50 watts less than the Opticon 2 MK2.
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. Opticon 2 MK2 has a Post which doesn't feature bi-amping/bi-wiring.
DALI Opticon 2 II's Post terminals
Klipsch RP-600M's Dual binding posts/bi-wire/bi-amp terminals allows Bi-amping or bi-wiring
Cabinet Type and Port Position
Both Opticon 2 MK2 and RP-600M 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.
DALI Opticon 2 II Port
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 DALI Opticon 2 II's and Klipsch RP-600M's external dimensions. DALI Opticon 2 II has external dimensions of 351.0 x 196.0 x 297.0mm ( 13-13/16 x 7-11/16 x 11-11/16inch) 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 6mm wider, 48mm taller and 4mm deeper than DALI Opticon 2 II.
Below you can see the front view size comparison of DALI Opticon 2 II and Klipsch RP-600M in scale.
Comparison image of DALI Opticon 2 II and Klipsch RP-600M 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 DALI Opticon 2 II is approximately 582.1cm2 / 90.2inch2 and base area of the Klipsch RP-600M is approximately 608.0cm2 / 94.2inch2. The Opticon 2 MK2 requires 4% less surface area than the RP-600M 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 DALI Opticon 2 II and Klipsch RP-600M 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 DALI Opticon 2 II weighs 7.73kg / 17lbs and the Klipsch RP-600M weighs 7.30kg / 16.1lbs. This makes the Opticon 2 MK2 6% heavier than the RP-600M.
Here is a comparison of how Opticon 2 MK2 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 DALI Opticon 2 II?
Here are the items that are included inside the box of Opticon 2 MK2:
Bookshelf loudspeakerGrille4 Rubber feetQuick Start GuideCongratulations Card
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
 Max Input Power |
150 watts
vs
100 watts
|
Handle more power from your amplifier |
 Height |
351mm
vs
399mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
582cm2 (196x297mm)
vs
608cm2 (202x301mm)
|
Takes less floor space |
 Sensitivity |
96 dB
vs
87 dB
|
Play louder with same amount of amplification power |
 Nominal Impedance |
8 ohms
vs
4 ohms
|
Less selective with amplifiers |
 Low Frequency Response |
45 Hz
vs
59 Hz
|
Generates deeper bass |
 Bi-Amping and Bi-Wiring |
Yes
vs
No
|
Allows bi-amping and bi-wiring connections |
 Price per pair* |
369USD
vs
1500USD
|
costs less (*prices may change depending on the seller, location and time) |
| General |
DALI Opticon 2 MK2 |
Klipsch Reference Premiere RP-600M |
| Brand |
DALI |
Klipsch |
| Speaker Type |
Bookshelf speakers |
Bookshelf speakers |
| Power Range |
30-150 watts |
up to 100 watts |
| Sensitivity |
86.5 dB |
96 dB |
| Impedance |
4 ohms |
8 ohms |
| Frequency Response |
59-25k Hz |
45-25k Hz |
Drivers |
|
|
| Woofer Quantity |
1 |
1 |
| Woofer Size |
6.5" |
6.5" |
| Woofer Composition |
Wood Fiber |
Cerametallic |
| Woofer Surround Material |
Rubber |
Rubber |
| Tweeter Size |
1.125" |
1" |
| Tweeter Type |
Soft-Dome |
Tractrix Horn |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Crossover Frequency |
2000Hz |
1500Hz |
| Firing Direction |
rear |
rear |
Physical Specs |
|
|
| Height |
351.0mm (13.8") |
399.0mm (15.7") |
| Width |
196.0mm (7.7") |
202.0mm (8") |
| Depth |
297.0mm (11.7") |
301.0mm (11.9") |
| Weight |
7.73kg (17lbs) |
7.30kg (16.1lbs) |
| Enclosure |
Bass Reflex |
Bass Reflex |
| Finish |
MDF/Wood-grain vinyl |
MDF/Wood-grain vinyl |
| Available Colors |
Satin Black, Tobacco Oak, Satin White |
Ebony, Walnut, Piano Black |
| Mounting Bracket |
No |
No |
| Recommended Stand Height |
24-26" |
22-26" |
| Grille |
Yes |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
| Biamp Inputs |
No |
Yes |
Other |
|
|
| Parts Warranty |
5 Years |
5 Years |
| Labor Warranty |
5 Years |
5 Years |