A sealed 10 against a sealed 12 — which should you buy?
The short answer
Buy the SVS SB-1000 Pro — on the fields both rows state, it brings the larger driver (12 inches against 10), the larger amplifier (325W RMS with a stated 820W peak against 300W RMS with no peak figure recorded) and the only checkable depth claim on the page, 20 Hz at a stated ±3 dB. It also states built-in room correction, app control, auto-on and a speaker-level input — four fields our REL row leaves blank. Buy the REL Acoustics HT/1003 MKII if its stated Black or White finish decides it, or if you can confirm on the manufacturer's page the connection options our row does not record, because a blank here is our silence and not a no.
As tracked by Home Theater Builder: the REL Acoustics HT/1003 MKII tracks at $649; the SVS SB-1000 Pro at $600.How we verify this data →
Two sealed, powered subwoofers at the entrance to the serious tier: a stated 10-inch REL against a stated 12-inch SVS, at $649 vs $600 as tracked today. One of the two rows says a great deal more than the other, and that is most of this page.
Specifications · side by side · per-field provenance
● SOURCE-TRACKED
Spec
REL Acoustics HT/1003 MKII
SVS SB-1000 Pro
Price
$649
$600
Brand
REL Acoustics
SVS
Driver Size Inches
10
12
Driver Config
single
single
Passive Or Powered
powered active
powered active
Amp Class
Class D
Class D
RMS Watts
300
325
Enclosure Type
sealed
sealed
Port Location
none
not stated
Down Firing
No
No
Wireless Option
Yes
Yes
RCA Inputs
2
2
LFE Input
Yes
Yes
Height Inches
13.3
13.5
Width Inches
14.3
13
Depth Inches
15.3
14.8
Weight Lbs
34.2
26
Finish Options
Black, White
not stated
Driver Count
not stated
1
Peak Watts
not stated
820
Freq Response Low HZ
not stated
20
Freq Response Tolerance
not stated
plus minus 3dB
Auto On
not stated
Yes
Built In Room Correction
not stated
Yes
App Control
not stated
Yes
Speaker Level Inputs
not stated
Yes
Shaded rows differ · green dot = lab-measured · amber = manufacturer-verified · blue = retailer/community-reported · grey = estimated · “not stated” means exactly that
Reading the numbers honestly
The two rows agree on the alignment and part company almost everywhere else. Sealed is stated on both — the REL goes further and states its port location as 'none', an explicit confirmation rather than an inference from the model name — so both roll off the gentle way into the room gain a small room hands back for free. From there the SVS row states a 12-inch driver, 325W RMS with an 820W peak, a 20 Hz floor at ±3 dB, built-in room correction, app control, auto-on and a speaker-level input. Our REL row states a 10-inch driver and 300W RMS with no peak figure, no frequency-extension figure and no tolerance, and none of those four control fields. Two honesty notes on that. A blank in our data is a silence, not a stated 'no'. And our REL row records two RCA inputs and an LFE input but no speaker-level input at all, which is worth confirming on the manufacturer's page before you buy. One thing inverts what the driver sizes imply: the 10-inch sub is the heavier one, 34.2 lb in a 14.3 × 15.3-inch footprint against 26 lb in a 13 × 14.8-inch one.
The verdict
Buy the SVS SB-1000 Pro — on the fields both rows state, it brings the larger driver (12 inches against 10), the larger amplifier (325W RMS with a stated 820W peak against 300W RMS with no peak figure recorded) and the only checkable depth claim on the page, 20 Hz at a stated ±3 dB. It also states built-in room correction, app control, auto-on and a speaker-level input — four fields our REL row leaves blank. Buy the REL Acoustics HT/1003 MKII if its stated Black or White finish decides it, or if you can confirm on the manufacturer's page the connection options our row does not record, because a blank here is our silence and not a no.
Stated outputSVS SB-1000 Pro — A 12-inch driver with 325W RMS and a stated 820W peak, against a 10-inch driver with 300W RMS and no peak figure in our data.
A depth claim you can checkSVS SB-1000 Pro — 20 Hz at a stated ±3 dB; our REL row records no extension figure and no tolerance to compare it with.
Room correction and controlSVS SB-1000 Pro — The SVS states built-in room correction, app control and auto-on; our REL row states none of the three.
Sealed behaviorEither — Both rows state a sealed enclosure — the REL even states its port location as none — so both roll off gently into room gain.
Finish choiceREL Acoustics HT/1003 MKII — The REL states Black and White finish options; our SVS row records no finish field at all.
Footprint and massSVS SB-1000 Pro — 26 lb in a 13 × 14.8-inch footprint against 34.2 lb in a 14.3 × 15.3-inch one — the smaller-driver sub is the heavier object.
Stated driver and amplifier: a 12-inch with 325W RMS and an 820W peak against a 10-inch with 300W RMS and NO peak figure recorded — the peak column exists on only one of these rows.
Only one extension claim exists to compare: 20 Hz at a stated ±3 dB on the SVS, against no frequency-extension figure and no tolerance on the REL — depth is reported as undocumented, not ranked.
Both are sealed by their own stated fields, and the REL states its port location as 'none' — an explicit sealed confirmation rather than an inference from the model name.
Four control fields the SVS states and our REL row leaves blank: built-in room correction, app control, auto-on and a speaker-level input — and in three-state data a blank is a silence, never a 'no'.
The stated cabinets invert the driver sizes: 34.2 lb in a 14.3 × 15.3-inch footprint for the 10-inch REL against 26 lb in a 13 × 14.8-inch one for the 12-inch SVS, at $649 vs $600 as tracked today.
