In this review, we will be comparing Sub C-8 D and Nero DueVoce DualX8, two Powered Subwoofer speakers from DALI and OSD. Being Powered subwoofers, they both have built-in amplifiers so you don't need an external power amp or an integrated amp to power them. Let's have a brief look at the main features of DALI Sub C-8 D and OSD Nero DueVoce DualX8 first before getting into our more detailed comparison.
The sections below take each area in turn: driver and amplifier, frequency response, physical size and connectivity.
Drivers
The efficiency of a subwoofer is directly proportional to the total radiating are squared hence the woofer quantity and diameter.DALI Sub C-8 Dand OSD Nero DueVoce DualX8 have the same driver set up: Both subwoofers have 1 x 8" drivers.
Frequency Response
Sub C-8 D has a frequency range of 33-200 Hz whereas Nero DueVoce DualX8 has a frequency range of 17-165 Hz. With a minimum frequency of 17Hz, the Nero DueVoce DualX8 can go significantly deeper on the low side and provide stronger bass compared to the Sub C-8 D's min frequency of 33Hz.
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 Subwoofer class in our database.
Low Frequency
Subwoofer Speakers
High Frequency
Subwoofer Speakers
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 Sub C-8 D's and OSD Nero DueVoce DualX8's external dimensions. DALI Sub C-8 D has external dimensions of 335 x 295 x 310 mm () whereas OSD Nero DueVoce DualX8 has external dimensions of 311.2 x 265.1 x 333.4mm ().
OSD Nero DueVoce DualX8 is 29.9mm narrower and 23.8mm shorter than DALI Sub C-8 D but it is also 23.4mm deeper.
Size, drawn to scale
Both speakers and both views share one scale, so everything here is directly comparable. Hover a box for its dimensions.
One scale for both, standing on the same surface and pushed back to the same wall, so the deeper one visibly sticks out further.
Near-identical footprints. OSD Nero DueVoce DualX8 is 23mm deeper, so it stands that much further out from the wall. DALI Sub C-8 D is 24mm taller.
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 Sub C-8 D is approximately 914.5cm2 / 141.7inch2 and base area of the OSD Nero DueVoce DualX8 is approximately 883.8cm2 / 137.0inch2. The Sub C-8 D requires 3% more surface area than the Nero DueVoce DualX8 which gives it a small disadvantage on placement in tight spaces.