Monoprice SW-15 vs XTZ Sound SUB 1X12

Short answer: the Monoprice SW-15. It ranks #13 of 145 subwoofers by sound quality at $374.99; the XTZ Sound SUB 1X12 ranks #65 and costs $850, so there is not much of a tradeoff to weigh.

What the Monoprice SW-15 offers: 15-inch ported with 600W RMS (800W peak) delivers Large-room Bassaholic rating. Unrivaled mid-bass punch for $375. Strong output with clean control. Dual speaker-level inputs and 40-150Hz crossover for flexible hookup. Watch for: Budget-tier design, ported room gain dependency, 30 kg mid-size, and limited dynamic headroom.

What the XTZ Sound SUB 1X12 offers: 12-inch ported with 500W RMS, trapezoidal cabinet reduces standing waves. Well-controlled fast precise response. 30mm front baffle with heavy internal bracing. Compares favorably to SVS PB2000 and Klipsch R-115SW per user reports. Swedish engineering quality. Watch for: No detailed measurement caveats are currently recorded.

Buy the Monoprice SW-15. It ranks higher for sound quality than the XTZ Sound SUB 1X12 and costs less, which settles it without a real tradeoff to make.

Looking for alternatives? See the complete Subwoofers rankings.

Specifications Side By Side

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Prices on this page were last checked September 16, 2026 at 12:41 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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The Two Speakers In Full

Monoprice SW-15: $374.99 Amazon eBay

Pros: 15-inch ported with 600W RMS (800W peak) delivers Large-room Bassaholic rating. Unrivaled mid-bass punch for $375. Strong output with clean control. Dual speaker-level inputs and 40-150Hz crossover for flexible hookup.

Cons: Budget-tier design, ported room gain dependency, 30 kg mid-size, and limited dynamic headroom.

Notes: Product # 41499

Full Monoprice SW-15 review and specifications →

Amplifier Power	600W RMS / 800W peak
CEA-2010-A Average (40-80Hz)	119.0 dB
Cabinet Color	black
Country	United States
Crossover Frequency	40-150Hz, 18dB/octave
Dimensions	18.1"H x 21"W x 22.7"D (459.7 x 533.4 x 576.6 mm)
Drivers	15" (381mm) driver
Enclosure	ported, bottom
Frequency Response	30-150Hz (-10dB)
Inputs	Stereo line level and speaker level
Measurement Source	Audioholics
Output SPL at 15 Hz	90.0 dB
Output SPL at 20 Hz	101.2 dB
Output SPL at 25 Hz	106.3 dB
Output SPL at 31.5 Hz	111.2 dB
Output SPL at 40 Hz	116.0 dB
Output SPL at 50 Hz	120.2 dB
Output SPL at 63 Hz	120.5 dB
Output SPL at 80 Hz	119.5 dB
Phase Control	0° or 180°
Warranty	1
Weight	66.1 lbs (30.0 kg)

• Links
  • Monoprice SW-15 Website
• Reviews, Comparisons and Sound Samples
  • Independently measured by Audioholics; the published figures above come from this ASR subwoofer measurement thread.
• Head-to-Head Comparisons
  • Monoprice SW-15 vs Power Sound Audio (PSA) XV15SEICE-BASE
  • Monoprice SW-15 vs SVS SB-3000
  • Monoprice SW-15 vs Power Sound Audio (PSA) XS15
  • Monoprice SW-15 vs Power Sound Audio (PSA) XV15-BASE
  • Monoprice SW-15 vs Paradigm Defiance X12
  • Monoprice SW-15 vs Power Sound Audio (PSA) XS15-BASE
  • Monoprice SW-15 vs Power Sound Audio (PSA) XV15
  • Monoprice SW-15 vs Klipsch SPL-120
  • See all 109 comparisons

XTZ Sound SUB 1X12: $850.00 eBay

Pros: 12-inch ported with 500W RMS, trapezoidal cabinet reduces standing waves. Well-controlled fast precise response. 30mm front baffle with heavy internal bracing. Compares favorably to SVS PB2000 and Klipsch R-115SW per user reports. Swedish engineering quality.

Full XTZ Sound SUB 1X12 review and specifications →

Amplifier Power	500W RMS
CEA-2010-A Average (40-80Hz)	113.3 dB
Country	Sweden
Dimensions	18.5"H x 20"W x 18.7"D (469.9 x 508.0 x 475.0 mm)
Drivers	12" (305mm) driver
Enclosure	ported, front
Frequency Response	19-160Hz
Measurement Source	Manufacturer
Output SPL at 15 Hz	92.7 dB
Output SPL at 20 Hz	99.6 dB
Output SPL at 25 Hz	105.7 dB
Output SPL at 31.5 Hz	110.2 dB
Output SPL at 40 Hz	113.7 dB
Output SPL at 50 Hz	114.0 dB
Output SPL at 63 Hz	113.1 dB
Output SPL at 80 Hz	112.4 dB
Output SPL at 100 Hz	112.2 dB
Warranty	5/2
Weight	54 lbs (24.5 kg)

• Links
  • XTZ Sound SUB 1X12 Website
• Reviews, Comparisons and Sound Samples
  • These figures are manufacturer-specified rather than independently measured.
• Head-to-Head Comparisons
  • XTZ Sound SUB 1X12 vs SVS SB-3000