Short answer: the Dayton Audio MKSX4. Both are rated 3.6/5 for sound quality (#19 and #13 of 73 subwoofers), and the Dayton Audio MKSX4 costs $144.98 against $209.99 for the PreSonus Eris Sub 8BT, with sound quality a draw, the lower price decides it.
Why pick the PreSonus Eris Sub 8BT: An affordable, light ported 8 inch subwoofer sized for a small room or a desktop studio setup. The catch: Warranty is a below-average 1 year.
Why pick the Dayton Audio MKSX4: A very low profile subwoofer with four 4 inch drivers that slides under a couch or bed, with good output for the money. The tradeoff: Budget-tier output at 112.2 dB, four small 4-inch drivers, ported room dependency, and $145 price point.
Buy the Dayton Audio MKSX4. Both are rated the same for sound quality, and it costs $65.01 less than the PreSonus Eris Sub 8BT.
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Prices on this page were last checked November 14, 2026 at 6:17 PM 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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Specifications Side By Side
| PreSonus Eris Sub 8BT | Dayton Audio MKSX4 | |
|---|---|---|
| Price | $209.99 | $144.98 Passive |
| Ranked | #13 of 73 in Small Home Subwoofers (Under 30 lbs) | #19 of 73 in Small Home Subwoofers (Under 30 lbs) |
| Enclosure | ported | ported, rear |
| Output SPL at 20 Hz | 77.7 dB | - |
| Output SPL at 25 Hz | 93.5 dB | - |
| Output SPL at 31.5 Hz | 99.6 dB | 84.7 dB |
| Output SPL at 40 Hz | 105.7 dB | 101.4 dB |
| Output SPL at 50 Hz | 109.4 dB | 112.8 dB |
| Output SPL at 63 Hz | 115.0 dB | 116.3 dB |
| Output SPL at 80 Hz | 115.3 dB | 118.3 dB |
| CEA-2010-A Average (40-80Hz) | 111.3 dB | 112.2 dB |
| Dimensions | 11.7”H x 9.8”W x 12.7”D (297.9 x 249.9 x 323.1 mm) | 16”H x 5.9”W x 14”D (406.4 x 149.9 x 355.6 mm) |
| Weight | 16.3 lbs (7.4 kg) | 26.9 lbs (12.2 kg) |
| Warranty | 1 | 5 |
| Measurement Source | Brent Butterworth | Brent Butterworth |
| Drivers | 8” (203mm) driver | 4x 4” (102mm) driver |
| Country | China | United States |
| Passive | - | Yes |
| Cabinet Color | - | black |
Where the Ratings Come From
- PreSonus Eris Sub 8BT: manufacturer specifications and listening comparisons; no independent measurement has been published yet.
- Dayton Audio MKSX4: manufacturer specifications and listening comparisons; no independent measurement has been published yet.
This comparison is generated from the ratings, specifications and measurements on each product’s own page, and it updates when that data changes. How we rank explains how each rating is decided.
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