In this review, we will be comparing Oberon GRAND Vokal and Diamond 12.C, two Passive Center Channel speakers from DALI and Wharfedale.
Let's have a brief look at the main features
of DALI Oberon GRAND Vokal and Wharfedale Diamond 12.C first before getting into our more
detailed comparison.
DALI Oberon GRAND Vokal Key Specs
- 2-way Design
- 1-1/8" Soft-Dome Tweeter
- 2 x 7" Wood Fiber Woofer
- 45-26k Hz Frequency Response
- 91 dB Sensitivity
- Impedance: 4ohms
- Power Range:25-200watts
- Weight:12.85kg
- Dimensions (H x W x D): 201.0" x 27.5" x 12.2"( 201 x 700 x 310mm )
Wharfedale Diamond 12.C Key Specs
- 2-way Design
- 1" soft-dome Tweeter
- 2 x 5" Klarity woofers (polypropylene and mica) Woofer
- 90-20k Hz Frequency Response
- 90 dB Sensitivity
- Impedance: 8ohms
- Power Range:20-102watts
- Weight:8.50kg
- Dimensions (H x W x D): 181.0" x 18-15/16" x 8-11/16"( 181.0 x 482.0 x 221.0mm )
What size room are the DALI Oberon GRAND Vokal and Wharfedale Diamond 12.C 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 Oberon GRAND Vokal |
Wharfedale Diamond 12.C |
| Near-field |
Poor |
Poor |
| Small Room |
Average |
Average |
| Mid-size Room |
Good |
Good |
| Large Room |
Average |
Average |
| 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.)
In the following sections, we will get into more detail in order to better understand how the DALI Oberon GRAND Vokal and Wharfedale Diamond 12.C compare and hopefully end up with enough arguments to decide which one of these loudspeakers is the better choice for you.
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Drivers
Both Oberon GRAND Vokal and Diamond 12.C are 2-way speakers.
| Driver |
DALI Oberon GRAND Vokal |
Wharfedale Diamond 12.C |
|
Driver Setup
|
2-way
|
2-way
|
|
Tweeter
|
1-1/8-inch
|
1-inch
|
|
Midrange
|
- |
- |
|
Woofer
|
2 x 7-inch
|
2 x 5-inch
|
Oberon GRAND Vokal features a 1-1/8" ultra-light soft textile Soft-Dome Tweeter and 2 x 7" Wood Fiber Woofer with a Crossover frequency at 2500Hz. On the other hand, the Diamond 12.C features a 1" woven polyester soft-dome Tweeter and 2 x 5" Klarity woofers (polypropylene and mica) Woofer with a Crossover frequency at 2000Hz.
Frequency Response
Oberon GRAND Vokal has a frequency range of 45-26k Hz whereas Diamond 12.C has a frequency range of 90-20k Hz. With a minimum frequency of 45Hz, the Oberon GRAND Vokal can go significantly deeper on the low side and provide stronger bass compared to the Diamond 12.C's min frequency of 90Hz.
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 Center Channel class in our database.
Low Frequency
Center Channel Speakers
High Frequency
Center Channel 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
Oberon GRAND Vokal is a 4 ohms speaker compared to the Diamond 12.C 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 Oberon GRAND Vokal can provide this impedance level.
These two speakers also have different sensitivity levels. Oberon GRAND Vokal sensitivity is rated at 91 dB and the Diamond 12.C's is rated at 90 dB. This 1 dB difference makes the DALI Oberon GRAND Vokal a more sensitive speaker compared to Wharfedale Diamond 12.C, hence will play louder with the same amount of watts.
Sensitivity
Center Channel 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.
Oberon GRAND Vokal can handle a max power of 200 watts RMS from the amp the whereas Diamond 12.C has a max power handling value of 102 watts RMS, 98 watts less than the Oberon GRAND Vokal.
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
Diamond 12.C features Binding post posts which make bi-amping or bi-wiring possible. Oberon GRAND Vokal has a Binding post which doesn't feature bi-amping/bi-wiring.
DALI Oberon GRAND Vokal's Binding post terminals
Wharfedale Diamond 12.C'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 DALI Oberon GRAND Vokal's and Wharfedale Diamond 12.C's external dimensions. DALI Oberon GRAND Vokal has external dimensions of 201 x 700 x 310mm ( 7.9 x 27.5 x 12.2inch) whereas Wharfedale Diamond 12.C has external dimensions of 181.0 x 482.0 x 221.0mm ( 7-1/8 x 18-15/16 x 8-11/16inch) .
DALI Oberon GRAND Vokal is clearly the larger of the two speakers. Its body is 218mm wider, 20mm taller and 89mm deeper than Wharfedale Diamond 12.C.
Below you can see the front view size comparison of DALI Oberon GRAND Vokal and Wharfedale Diamond 12.C in scale.
Comparison image of DALI Oberon GRAND Vokal and Wharfedale Diamond 12.C 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 Oberon GRAND Vokal is approximately 2170.0cm2 / 336.4inch2 and base area of the Wharfedale Diamond 12.C is approximately 1065.2cm2 / 165.1inch2. The Oberon GRAND Vokal requires 104% more surface area than the Diamond 12.C which gives it a small disadvantage on placement in tight spaces.