In this review, we will be comparing Nero DueVoce DualX8 and ProSub 800, two Powered Subwoofer speakers from OSD and Definitive Technology. 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 OSD Nero DueVoce DualX8 and Definitive ProSub 800 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.OSD Nero DueVoce DualX8and Definitive ProSub 800 have the same driver set up: Both subwoofers have 1 x 8" drivers.
Frequency Response
Nero DueVoce DualX8 has a frequency range of 17-165 Hz whereas ProSub 800 has a frequency range of 20-150 Hz. With a minimum frequency of 17Hz, the Nero DueVoce DualX8 can go slightly deeper then the ProSub 800's min frequency of 20Hz.
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 OSD Nero DueVoce DualX8's and Definitive ProSub 800's external dimensions. OSD Nero DueVoce DualX8 has external dimensions of 311.2 x 265.1 x 333.4mm () whereas Definitive ProSub 800 has external dimensions of 328.0 x 262.0 x 423.0mm (12-7/8 x 10-5/16 x 16-5/8inch).
OSD Nero DueVoce DualX8 is 16.8mm shorter and 89.6mm less deeper than Definitive ProSub 800 but it is also 3.1mm wider.
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.
Definitive ProSub 800 needs about 25% more floor or shelf area. Definitive ProSub 800 is 90mm deeper, so it stands that much further out from the wall. Definitive ProSub 800 is 17mm 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 OSD Nero DueVoce DualX8 is approximately 883.8cm2 / 137.0inch2 and base area of the Definitive ProSub 800 is approximately 1108.3cm2 / 171.8inch2. The Nero DueVoce DualX8 requires 20% less surface area than the ProSub 800 which gives it a small advantage on placement in tight spaces.
Weight Comparison The weight of a subwoofer may become an important factor if you need to move and reposition the unit often to find the optimal positioning, also known as 'Subwoofer Crawling'. The OSD Nero DueVoce DualX8 weighs 7.80kg / 17.2lbs and the Definitive ProSub 800 weighs 11.82kg / 26lbs. This makes the ProSub 800 52% heavier than the Nero DueVoce DualX8.
Here is a comparison of how Nero DueVoce DualX8 and ProSub 800's weights compare with the average, max and min weights in Powered Subwoofer class.
Weight
All Subwoofer Speakers
 Low Frequency Response |
17 Hz
vs
20 Hz
|
Generates deeper bass |
 High Frequency Response |
165 Hz
vs
150 Hz
|
Generates higher frequency |
 Height |
311mm
vs
328mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
883cm2
vs
1108cm2
|
Takes less floor space |
 Price per pair* |
300USD
vs
399USD
|
costs less (*prices may change depending on the seller, location and time) |
Size, drawn to scale
Both subwoofers 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 floor and pushed back to the same wall, so the bigger one visibly takes more of the room.
Definitive ProSub 800 needs about 25% more floor area. Definitive ProSub 800 stands 90mm further into the room. Definitive ProSub 800 is 17mm taller.
| General |
OSD Nero DueVoce DualX8 |
Definitive Technology ProSub 800 |
| Brand |
OSD |
Definitive Technology |
| Speaker Type |
Powered Subwoofer |
Powered Subwoofer |
| Frequency Response |
17-165 Hz |
20-150 Hz |
Amplifier |
|
|
| Watts RMS (Continuous) |
130-watt RMS |
300-watt RMS |
| Watts Peak (Max) |
300-watt RMS |
n/a |
Drivers |
|
|
| Woofer Quantity |
1 |
1 |
| Woofer Size |
8" |
8" |
| Woofer Composition |
|
Polymer |
| Tweeter Size |
- |
- |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Crossover Frequency |
n/a |
40-150 Hz and 80 Hz |
| Firing Direction |
n/a |
front |
Physical Specs |
|
|
| Height |
311.2mm (12.3") |
328.0mm (12.9") |
| Width |
265.1mm (10.4") |
262.0mm (10.3") |
| Depth |
333.4mm (13.1") |
423.0mm (16.7") |
| Weight |
7.80kg (17.2lbs) |
11.82kg (26lbs) |
| Enclosure |
|
Passive Radiator |
| Grille |
n/a |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
Other |
|
|
| Parts Warranty |
2 Years |
3 Years |
| Labor Warranty |
2 Years |
3 Years |
No single best subwoofer here. Your room, where the box can physically go, and whether this is mainly for films or mainly for music will settle it long before the specs do.
| Area | Better | Why |
|---|
| Bass depth | A | OSD Nero DueVoce DualX8 goes deeper - 17Hz against 20Hz. Under 20Hz is felt more than heard - the bottom of a pipe organ and the bottom of a film mix. |
| Amplifier power | B | Definitive ProSub 800 has the bigger amplifier - 300W against 130W RMS, about 3.6dB more on tap. In a large room that is headroom before the DSP starts limiting. |
| Driver area | evenly matched | Near-identical radiating area (8" against 8"). |
| Enclosure | evenly matched | Both are passive radiator designs, so they roll off in much the same way. |
| Cabinet size | depends | OSD Nero DueVoce DualX8 is about 24% smaller by volume. In a subwoofer that is a real trade rather than a preference: box volume is how you get output low down without a bigger amplifier. |
| Warranty | B | Definitive ProSub 800 carries 3 years on parts against 2 years. A subwoofer amplifier works harder than anything else in the system, so this is not a throwaway line. |
| Price | A | OSD Nero DueVoce DualX8 costs less - $300 against $399, about 25% less. |
A OSD Nero DueVoce DualX8 B Definitive ProSub 800
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 subwoofers are judged; anything missing on either side is left out rather than guessed.
Which should you choose?
The usual trade-off: Definitive ProSub 800 measures better, OSD Nero DueVoce DualX8 costs about 25% less. In a normal room, placement will make a bigger difference than the gap between these two.
One thing outweighs everything above: where the subwoofer stands. Room modes can add or remove 10dB or more at a given seat, which is far larger than any difference on this page. Before spending more, try the sub in two or three positions - the crawl test, where you put it in the listening seat and crawl the room to find where the bass sounds best, costs nothing and usually beats an upgrade.