Short answer: the Monoprice SW-15. It ranks #13 of 145 subwoofers by sound quality at $374.99; the OEM Systems ICBM ranks #21 and costs $1725, so there is little reason to consider the other one.
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 OEM Systems ICBM offers: Independent CEA-2010 testing (4-driver configuration) records 97.5 dB at 20 Hz and 117.0 dB (avg of 3/4 bands) through 40-80 Hz. The sealed in-wall enclosure fits inside a standard 2x4 stud bay, invisible behind a paintable grille. Watch for: Custom-install product: no combined system weight is published, and a 2-driver variant of this kit is not currently sold anywhere verified, so only the 4-driver configuration is listed here.
Buy the Monoprice SW-15. It ranks higher for sound quality than the OEM Systems ICBM and costs less, so the other one has nothing left to offer.
Still deciding? The full Subwoofers rankings cover every ranked option.
Specifications Side By Side
| Monoprice SW-15 | OEM Systems ICBM | |
|---|---|---|
| Price | $374.99 | $1,725 |
| Ranked | #13 of 145 in Medium Home Subwoofers (30-75 lbs) | #21 of 145 in Medium Home Subwoofers (30-75 lbs) |
| Enclosure | ported, bottom | sealed, in-wall |
| Output SPL at 15 Hz | 90.0 dB | - |
| Output SPL at 20 Hz | 101.2 dB | 97.5 dB |
| Output SPL at 25 Hz | 106.3 dB | 100.4 dB |
| Output SPL at 31.5 Hz | 111.2 dB | 105.6 dB |
| Output SPL at 40 Hz | 116.0 dB | 111.3 dB |
| Output SPL at 50 Hz | 120.2 dB | 118.4 dB |
| Output SPL at 63 Hz | 120.5 dB | 121.2 dB |
| Output SPL at 80 Hz | 119.5 dB | - |
| CEA-2010-A Average (40-80Hz) | 119.0 dB | 117.0 dB (avg of 3/4 bands) |
| Dimensions | 18.1"H x 21"W x 22.7"D (459.7 x 533.4 x 576.6 mm) | 29.5"H x 13.5"W x 3.4"D (749.3 x 342.9 x 85.7 mm) (enclosure) |
| Weight | 66.1 lbs (30.0 kg) | - |
| Warranty | 1 | - |
| Cabinet Color | black | - |
| Country | United States | United States |
| Measurement Source | Audioholics | Brent Butterworth |
| Frequency Response | 30-150Hz (-10dB) | - |
| Amplifier Power | 600W RMS / 800W peak | - |
| Crossover Frequency | 40-150Hz, 18dB/octave | - |
| Phase Control | 0° or 180° | - |
| Inputs | Stereo line level and speaker level | - |
| Drivers | 15" (381mm) driver | (4) 8" (203mm) drivers |
Related Speaker Comparisons
How Monoprice SW-15 compares with other leading options:
- JTR Speakers Captivator 212PRO vs Monoprice SW-15
- MartinLogan Dynamo 1600X vs Monoprice SW-15
- HSU Research ULS-15 MK2 vs Monoprice SW-15
- Monoprice SW-15 vs PSB Speakers SubSeries 450
- Monoprice SW-12 vs Monoprice SW-15
Prices on this page were last checked September 14, 2026 at 1:47 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.
As an eBay Partner, we may be compensated if you make a purchase.
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
- 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 72 comparisons
OEM Systems ICBM: $1,725 eBay
Pros: Independent CEA-2010 testing (4-driver configuration) records 97.5 dB at 20 Hz and 117.0 dB (avg of 3/4 bands) through 40-80 Hz. The sealed in-wall enclosure fits inside a standard 2x4 stud bay, invisible behind a paintable grille.
Cons: Custom-install product: no combined system weight is published, and a 2-driver variant of this kit is not currently sold anywhere verified, so only the 4-driver configuration is listed here.
Full OEM Systems ICBM review and specifications →
| CEA-2010-A Average (40-80Hz) | 117.0 dB (avg of 3/4 bands) |
|---|---|
| Country | United States |
| Dimensions | 29.5"H x 13.5"W x 3.4"D (749.3 x 342.9 x 85.7 mm) (enclosure) |
| Drivers | (4) 8" (203mm) drivers |
| Enclosure | sealed, in-wall |
| Measurement Source | Brent Butterworth |
| Output SPL at 20 Hz | 97.5 dB |
| Output SPL at 25 Hz | 100.4 dB |
| Output SPL at 31.5 Hz | 105.6 dB |
| Output SPL at 40 Hz | 111.3 dB |
| Output SPL at 50 Hz | 118.4 dB |
| Output SPL at 63 Hz | 121.2 dB |
- Links
- Reviews, Comparisons and Sound Samples
- Independently measured by Brent Butterworth; the published figures above come from this ASR subwoofer measurement thread.