Axiom Audio EP400 v3 Review: Rated 2.6/5

Last updated: October 21, 2026

The Axiom Audio EP400 v3 is rated 2.6/5 for sound quality, #70 of 73 Small Home Subwoofers (Under 30 lbs). See all Subwoofers rankings for every top pick.

Axiom Audio EP400 v3 · Editor's rating 2.6/5, ranked #70 of 73 Small Home Subwoofers (Under 30 lbs)

Prices on this page were last checked October 28, 2026 at 1:06 AM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.

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#70 Axiom Audio EP400 v3: $599 Discontinued eBay

Pros: A sealed 8 inch subwoofer with balanced XLR, RCA and speaker level inputs for adding upper bass in a modest room. Independent CEA-2010 testing records 90.0 dB at 20 Hz and 98.5 dB through 40-80 Hz. The sealed enclosure with 8” (203mm) driver is best suited to upper-bass support in a modest room.

Cons: Deep-bass output is limited relative to its midbass result, so it is not the right choice for the lowest movie effects. The 349.2H x 266.7W x 426.7D mm cabinet and 8.1 kg mass still need deliberate placement and calibration. Discontinued.

AES InputNo
Aux InputNo
CEA-2010-A Average (40-80Hz)98.5 dB
Coaxial InputNo
CountryCanada
Dimensions13.7”H x 10.5”W x 16.8”D (349.2 x 266.7 x 426.7 mm)
Drivers8” (203mm) driver
Enclosuresealed
HDMI InputNo
InputsXLR (balanced), RCA (line-level), speaker-level
Measurement SourceAudioholics
Optical InputNo
Output SPL at 20 Hz90.0 dB
Output SPL at 25 Hz94.0 dB
Output SPL at 31.5 Hz97.0 dB
Output SPL at 40 Hz99.0 dB
Output SPL at 50 Hz99.0 dB
Output SPL at 63 Hz98.0 dB
Output SPL at 80 Hz98.0 dB
Output SPL at 100 Hz98.0 dB
RCA InputYes
TRS InputNo
USB InputNo
Warranty5
Weight17.9 lbs (8.1 kg)
XLR InputYes

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