
REL Acoustics HT MKII
Score: 84/100
SVS SB-5000 R|Evolution Black
Score: 87/100Rankings

The SVS SB-5000 R|Evolution is a high-end sealed subwoofer featuring a 15-inch driver and a 2000 W RMS amplifier for massive, precise bass. Its sealed architecture and size make it heavy and less suitable for extremely large venues without additional subs. Best for audiophiles and home-theater enthusiasts seeking top-tier performance in medium-to-large rooms.

The REL HT/1205 MKII is a 12-inch sealed powered subwoofer delivering 500 W RMS and deep 22 Hz bass in a compact cabinet. Its high output comes with a substantial 38 lb weight and wireless capability only as an optional add-on. Ideal for enthusiasts seeking powerful, precise bass in medium-sized home-theater rooms.
| Attribute | ![]() | ![]() |
|---|---|---|
500 W | 2,000 Wbest | |
22 Hzbest | — | |
800 W | 5,000 Wbest | |
12 in | 15 inbest | |
12 inbest | — | |
| ↓ lower better | 38 lbbest | 102.1 lb |
400 sqft | 3,000 sqftbest | |
15.25 in | 18.3 inbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Power & Consumption(2) | ||
Amplifier Power (RMS) (W) | 500 W | 2000 W |
Peak Power (W) | 800 W | 5000 W |
Audio(2) | ||
Frequency Response (Hz) | 22-200 Hz | 17-280 Hz |
Driver Size (in) | 12 in | 15 in |
Connectivity(2) | ||
Input Type | RCA | RCA/LFE |
Wireless Capability | true | false |
Features(1) | ||
Recommended Room Size (sqft) | 400 sqft | 3000 sqft |
Build & Design(6) | ||
Enclosure Type | Sealed | sealed |
Cabinet Material | MDF with high-gloss HDF top panel | MDF |
Weight (lb) | 38.0 lb | 102.1 lb |
Height (in) | 15.25 in | 18.3 in |
Width (in) | 16.25 in | 17.8 in |
Depth (in) | 17.25 in | 19.5 in |

Products in the top-left offer the best value (high score, low price).

Professional reviewers commend the HT/1205 MKII for delivering cinema-grade bass impact from a surprisingly compact enclosure, citing its powerful MOSFET-driven Class D amp and refined chassis as key strengths. They highlight its ability to rival much more expensive subwoofers while noting the added weight and the need for an optional wireless module as minor drawbacks.

Professional reviewers praise the SB-5000 for its all-new 15-inch driver, 2,000 W Class D amp, and 295 MHz DSP that together deliver pinpoint accuracy, massive low-frequency output, and near-zero resonance. They note the sealed design provides tight, musical bass ideal for reference-level music and home cinema, while also calling out the need for ample power and the unit's substantial weight.
“"physically immerses rooms"”

“"game-changer"”



Everyday users rave about the thunderous, clean bass that physically immerses a room and the ease of app-based tuning, describing the subwoofer as a "game-changer" for movies and music. Recurring complaints focus on the 102 lb weight, the necessity for wall clearance, and reduced effectiveness in very large spaces without additional subs.