In this review, we will be comparing Opticon 6 MK2 and Oberon 5, two Passive Floor-standing speakers by DALI.
Let's have a brief look at the main features
of DALI Opticon 6 II and DALI Oberon 5 first before getting into our more
detailed comparison.
| Key Specs | DALI Opticon 6 II | DALI Oberon 5 |
|---|
| Brand | DALI
Denmark · founded 1983 | DALI
Denmark · founded 1983 |
|---|
| Design | 3-way | 2-way |
|---|
| Tweeter | 17 x 45 mm ribbon + 1.125" Soft-dome + ribbon Hybrid | 1.125" Soft-Dome |
|---|
| Woofer | 2 x 6.5" Wood Fiber | 2 x 5.25" Wood Fiber |
|---|
| Frequency response | 49-30k Hz | 39-26k Hz |
|---|
| Sensitivity | 88 dB | 88 dB |
|---|
| Impedance | 4 ohms | 6 ohms |
|---|
| Power range | 25-200 watts | 30-150 watts |
|---|
| Weight | 19.30kg / 42.5lbs | 10.80kg / 23.8lbs |
|---|
| Dimensions (H x W x D) | 39-3/4" x 7-5/8" x 13-3/8"
1010.0 x 195.0 x 340.0mm | 32-3/4" x 7-15/16" x 10-7/8"
832.0 x 202.0 x 277.0mm |
|---|
What size room are the DALI Opticon 6 II and DALI Oberon 5 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* |
DALI Opticon 6 II |
DALI Oberon 5 |
| Near-field |
Bad |
Bad |
| Small Room |
Poor |
Poor |
| Mid-size Room |
Good |
Good |
| Large Room |
Good |
Good |
| Very Large Room |
Poor |
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.)
The sections below take each area in turn: drivers, frequency response, physical size and what you get in the box.
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through our links. As an Amazon Associate I earn from qualifying purchases.
Drivers
One of the fundamental differences between these two speakers is that Opticon 6 MK2 is a 3-way design whereas the Oberon 5 is a 2-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.
DALI Opticon 6 IIDALI Oberon 5
TweeterWoofer
Front view, drawn to scale - cabinets and drivers share one scale, so sizes are directly comparable. Hover a driver for its size.
| Driver |
DALI Opticon 6 II |
DALI Oberon 5 |
|
Driver Setup
|
3-way
|
2-way
|
|
Tweeter
|
17 x 45 mm ribbon + 1.125-inch
|
1.125-inch
|
|
Midrange
|
- |
- |
|
Woofer
|
2 x 6.5-inch
|
2 x 5.25-inch
|
Opticon 6 MK2 features a 17 x 45 mm ribbon + 1.125" Soft-dome + ribbon Hybrid Tweeter and 2 x 6.5" Wood Fiber Woofer with a Crossover frequency at 800Hz, 2200Hz and 14,000Hz. On the other hand, the Oberon 5 features a 1.125" Soft-Dome Tweeter and 2 x 5.25" Wood Fiber Woofer with a Crossover frequency at 2400Hz.
Frequency Response
Opticon 6 MK2 has a frequency range of 49-30k Hz whereas Oberon 5 has a frequency range of 39-26k Hz. With a minimum frequency of 39Hz, the Oberon 5 can go significantly deeper on the low side and provide stronger bass compared to the Opticon 6 MK2's min frequency of 49Hz.
The graph below depicts how these two speakers compare with the max, min and average Low Frequency values of other speakers in the Floor-standing class in our database.
Low Frequency
Floor-standing 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
Opticon 6 MK2 is a 4 ohms speaker compared to the Oberon 5 which has a nominal impedance of 6 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 6 MK2 can provide this impedance level.
On the other hand, they have the same sensitivity of 88 dBdB.
Sensitivity
Floor-standing 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.
Opticon 6 MK2 can handle a max power of 200 watts RMS, whereas Oberon 5 has a max power handling value of 150 watts RMS, 50 watts less than the Opticon 6 MK2.
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.
Input Type and Bi-Amping / Bi-Wiring
Opticon 6 MK2 features Post posts which make bi-amping or bi-wiring possible. Oberon 5 has a Post which doesn't feature bi-amping/bi-wiring.
DALI Opticon 6 II's Post terminals allows Bi-amping or bi-wiring
DALI Oberon 5's Post terminals
Cabinet Type and Port Position
Both Opticon 6 MK2 and Oberon 5 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 6 II Port
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 DALI Opticon 6 II's and DALI Oberon 5's external dimensions. DALI Opticon 6 II has external dimensions of 1010.0 x 195.0 x 340.0mm (39-3/4 x 7-5/8 x 13-3/8inch) whereas DALI Oberon 5 has external dimensions of 832.0 x 202.0 x 277.0mm (32-3/4 x 7-15/16 x 10-7/8inch).
DALI Oberon 5 is 178mm shorter and 63mm less deeper than DALI Opticon 6 II but it is also 7mm wider.
Below you can see the front view size comparison of DALI Opticon 6 II and DALI Oberon 5 in scale.
Comparison image of DALI Opticon 6 II and DALI Oberon 5 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 6 II is approximately 663.0cm2 / 102.8inch2 and base area of the DALI Oberon 5 is approximately 559.5cm2 / 86.7inch2. The Opticon 6 MK2 requires 18% more surface area than the Oberon 5 which gives it a small disadvantage 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 DALI Opticon 6 II weighs 19.30kg / 42.5lbs and the DALI Oberon 5 weighs 10.80kg / 23.8lbs. This makes the Opticon 6 MK2 79% heavier than the Oberon 5.
Here is a comparison of how Opticon 6 MK2 and Oberon 5's weights compare with the average, max and min weights in Passive Floor-standing class.
Weight
All Floor-standing Speakers
What's in the Box of DALI Opticon 6 II?
Here are the items that are included inside the box of Opticon 6 MK2:
- Floorstanding loudspeaker
- Grille
- 2 Binding post jumpers (pre-installed)
- 4 Outrigger feet
- 4 Spikes (with lock nuts)
- 4 Rubber pads
- 4 Screws
- Hex-key
- Wrench
- Quick Start Guide
- Congratulations Card
What's in the Box of DALI Oberon 5?
Here are the items that come with the Oberon 5:
- 2 Floorstanding loudspeakers
- 2 Grilles
- 8 Rubber feet
- 8 Spike-feet
- 8 Hex-nuts
- Manual
 Max Input Power |
200 watts
vs
150 watts
|
Handle more power from your amplifier |
 Driver Setup |
3-way
vs
2-way
|
Have a dedicated mid-range driver |
 Woofer Size |
6.5 inches
vs
5.25 inches
|
Larger woofer |
 High Frequency Response |
30k Hz
vs
26k Hz
|
Generates higher frequency |
 Bi-Amping and Bi-Wiring |
Yes
vs
No
|
Allows bi-amping and bi-wiring connections |
 Nominal Impedance |
6 ohms
vs
4 ohms
|
Less selective with amplifiers |
|
Low Frequency Response |
39 Hz
vs
49 Hz
|
Generates deeper bass |
 Height |
832mm
vs
1010mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
559cm2
vs
663cm2
|
Takes less floor space |
 Price per pair* |
1299USD
vs
2500USD
|
costs less (*prices may change depending on the seller, location and time) |
| General |
DALI Opticon 6 MK2 |
DALI Oberon 5 |
| Brand |
DALI |
DALI |
| Speaker Type |
Floor-standing speaker |
Floor-standing speaker |
| Power Range |
25-200 watts |
30-150 watts |
| Sensitivity |
88 dB |
88 dB |
| Impedance |
4 ohms |
6 ohms |
| Frequency Response |
49-30k Hz |
39-26k Hz |
Drivers |
|
|
| Woofer Quantity |
2 |
2 |
| Woofer Size |
6.5" |
5.25" |
| Woofer Composition |
Wood Fiber |
Wood Fiber |
| Woofer Surround Material |
Rubber |
Rubber |
| Tweeter Size |
17 x 45 mm ribbon + 1.125" |
1.125" |
| Tweeter Type |
Soft-dome + ribbon Hybrid |
Soft-Dome |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Crossover Frequency |
800Hz, 2200Hz and 14,000Hz |
2400Hz |
| Firing Direction |
rear |
rear |
Physical Specs |
|
|
| Height |
1010.0mm (39.8") |
832.0mm (32.8") |
| Width |
195.0mm (7.7") |
202.0mm (8") |
| Depth |
340.0mm (13.4") |
277.0mm (10.9") |
| Weight |
19.30kg (42.5lbs) |
10.80kg (23.8lbs) |
| Enclosure |
Bass Reflex |
Bass Reflex |
| Finish |
MDF/Wood-grain vinyl |
MDF/Wood-grain vinyl |
| Available Colors |
Satin Black, Tobacco Oak, Satin White |
Black Ash, Light Oak, Dark Walnut, White |
| Grille |
Yes |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
| Biamp Inputs |
Yes |
No |
Other |
|
|
| Parts Warranty |
5 Years |
5 Years |
| Labor Warranty |
5 Years |
5 Years |
These sit in different price classes - DALI Opticon 6 II costs roughly 1.9x what DALI Oberon 5 does. Expect it to lead on paper; the question is whether the gap is audible enough in your room to be worth it.
| Area | Better | Why |
|---|
| Bass | B | DALI Oberon 5 digs deeper - 39Hz against 49Hz. |
| Amplifier needs | evenly matched | Similar sensitivity (88dB vs 88dB) - both want much the same power. |
| Amplifier match | B | DALI Oberon 5 is the easier load at 6 ohms; the other is 4 ohms and wants an amplifier rated for it. |
| Headroom | A | DALI Opticon 6 II takes more power (200W vs 150W) - more in hand in a big room. |
| Size | depends | DALI Oberon 5 is easier to place; DALI Opticon 6 II is bigger, which usually goes with fuller bass. Your room decides. |
| Expandability | depends | DALI Opticon 6 II: bi-amping. DALI Oberon 5 sits in a wider range (9 models), so a matched surround system is easier later. |
| Price | B | DALI Oberon 5 is cheaper - $1,299 against $2,500, about 48% less; arguably a different class. |
A DALI Opticon 6 II B DALI Oberon 5
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?
DALI Oberon 5 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 49Hz anyway, so judge these on the other rows instead. In a large or open-plan room, DALI Opticon 6 II has the cabinet volume to fill it more easily; in a small room, near a wall or at desk distance, DALI Oberon 5 is the easier speaker to get right.
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.