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.

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 Input | No |
|---|---|
| Aux Input | No |
| CEA-2010-A Average (40-80Hz) | 98.5 dB |
| Coaxial Input | No |
| Country | Canada |
| Dimensions | 13.7”H x 10.5”W x 16.8”D (349.2 x 266.7 x 426.7 mm) |
| Drivers | 8” (203mm) driver |
| Enclosure | sealed |
| HDMI Input | No |
| Inputs | XLR (balanced), RCA (line-level), speaker-level |
| Measurement Source | Audioholics |
| Optical Input | No |
| Output SPL at 20 Hz | 90.0 dB |
| Output SPL at 25 Hz | 94.0 dB |
| Output SPL at 31.5 Hz | 97.0 dB |
| Output SPL at 40 Hz | 99.0 dB |
| Output SPL at 50 Hz | 99.0 dB |
| Output SPL at 63 Hz | 98.0 dB |
| Output SPL at 80 Hz | 98.0 dB |
| Output SPL at 100 Hz | 98.0 dB |
| RCA Input | Yes |
| TRS Input | No |
| USB Input | No |
| Warranty | 5 |
| Weight | 17.9 lbs (8.1 kg) |
| XLR Input | Yes |
- Reviews, Comparisons and Sound Samples
- Independently measured by Audioholics; the published figures above come from this ASR subwoofer measurement thread.
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