Buy the SVS 3000 Micro for most small rooms — $901 less as tracked today, an 800W RMS amp, and a 23 Hz ±3 dB claim that doesn't strain belief. Buy the KEF KC62 when the KEF aesthetic or the last word in miniaturization is the point, and read its remarkable 11 Hz claim as extension-at-some-level, not loud 11 Hz output.
As tracked by Home Theater Builder: the KEF KC62 tracks at $1,700; the SVS 3000 Micro at $799.How we verify this data →
The two most serious tiny subwoofers made: KEF's KC62 and SVS's 3000 Micro ($1,700 vs $799 as tracked today). One of them prints a number that demands a raised eyebrow.
Specifications · side by side · per-field provenance
● SOURCE-TRACKED
Spec
KEF KC62
SVS 3000 Micro
Price
$1,700
$799
Brand
KEF
SVS
Driver Size Inches
6.5
8
Driver Count
2
2
Driver Config
dual opposing
not stated
Passive Or Powered
powered active
powered active
Amp Class
Class D
Class D
RMS Watts
1000
800
Freq Response Low HZ
11
23
Freq Response Tolerance
plus minus 3dB
plus minus 3dB
Max SPL DB
105
not stated
Sensitivity Measurement Context
unstated
not stated
Enclosure Type
sealed
sealed
Port Location
none
not stated
Lp Crossover HZ Min
40
30
Lp Crossover HZ Max
140
200
Built In Room Correction
Yes
Yes
Wireless Option
Yes
Yes
Speaker Level Inputs
Yes
not stated
LFE Input
Yes
Yes
Height Inches
9.7
10.9
Width Inches
10.1
11.7
Depth Inches
9.8
10.7
Weight Lbs
30.9
22.5
Finish Options
Mineral White, Carbon Black
not stated
Peak Watts
not stated
2500
Phase Control
not stated
variable 0 to 180
Phase Adjustment Range Degrees
not stated
0° – 180°
Auto On
not stated
Yes
App Control
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
KEF claims 11 Hz at ±3 dB from a sealed box with 6.5-inch drivers. We report that figure faithfully — it is what KEF publishes, tolerance included — while noting how extraordinary it is: deeper than most 15-inch subs claim, from a roughly ten-inch cube. What the spec sheet does NOT state is at what output level that 11 Hz exists; extension without an SPL qualifier says nothing about how loud it plays down there. SVS claims a more ordinary 23 Hz ±3 dB from its 8-inch-driver box. Both tolerances are stated, so the comparison is at least like-for-like — but physics still charges for output, and neither sheet publishes the bill.
The verdict
Buy the SVS 3000 Micro for most small rooms — $901 less as tracked today, an 800W RMS amp, and a 23 Hz ±3 dB claim that doesn't strain belief. Buy the KEF KC62 when the KEF aesthetic or the last word in miniaturization is the point, and read its remarkable 11 Hz claim as extension-at-some-level, not loud 11 Hz output.
Value in a micro footprintSVS 3000 Micro — App control and room correction listed, for less as tracked today ($799 vs $1,700).
Smallest possible serious boxKEF KC62 — The KC62 is the smaller device, and its published spec — read with our caveat — is the more ambitious engineering claim.
Where to buy
CHEAPEST FIRST · NOT COMMISSION-RANKED
KEF KC62
Tracked at Best Buy · price not quotable from a search page
KEF's 11 Hz ±3 dB from 6.5" drivers is reported faithfully AND flagged as extraordinary — with the honest note that no SPL qualifier accompanies it, so it says nothing about output level at 11 Hz.
Both tolerances are stated (±3 dB), making 11 vs 23 Hz a like-for-like claim comparison — rare at any price.
1,000W vs 800W RMS stated amplifiers — $1,700 vs $799 as tracked today (2.1×); the deeper printed claim is on the KEF.
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