Short answer: the Rythmik FV15HP on measured sound quality, the SVS SB13-Plus on price. The Rythmik FV15HP ranks #48 of 110 subwoofers at $2127. The SVS SB13-Plus ranks #108 at $1399, $728 cheaper.
What the Rythmik FV15HP offers: 15-inch ported driver reaches 122.0dB CEA-2010-A average, matching the output of subwoofers costing significantly more. Watch for: Premium price ($1,770), ported design room gain dependency, and mid-to-large 52 kg footprint.
What the SVS SB13-Plus offers: Independent CEA-2010 testing records 92.3 dB at 20 Hz and 108.1 dB (avg of 3/4 bands) through 40-80 Hz. The sealed enclosure with 13” (330mm) driver delivers substantial upper-bass output for movie effects and music. Watch for: Deep-bass output is more limited than the strong 40-80 Hz result suggests, so it is not the right choice when the lowest movie effects are the priority. The 431.8H x 431.8W x 457.2D mm cabinet and 43.1 kg mass still require deliberate placement and calibration.
Buy the Rythmik FV15HP when sound quality outweighs the price for you, and the SVS SB13-Plus when the price outweighs sound quality instead.
If sound quality matters at all to you, skip the SVS SB13-Plus. It ranks near the bottom of the 110 subwoofers, so look higher up the list instead.
Want more options? Browse the full Subwoofers rankings.
Specifications Side By Side
| Rythmik FV15HP | SVS SB13-Plus | |
|---|---|---|
| Price | $1,770 | $1399 |
| Ranked | #48 of 110 in Large Home Subwoofers (Over 75 lbs) | #108 of 110 in Large Home Subwoofers (Over 75 lbs) |
| Enclosure | ported, front | sealed |
| Output SPL at 12.5 Hz | 92.8 dB | - |
| Output SPL at 15 Hz | 105.1 dB | - |
| Output SPL at 20 Hz | 111.1 dB | 92.3 dB |
| Output SPL at 25 Hz | 116.1 dB | 97.2 dB |
| Output SPL at 31.5 Hz | 120.0 dB | 97.2 dB |
| Output SPL at 40 Hz | 122.5 dB | 108.1 dB |
| Output SPL at 50 Hz | 122.1 dB | 108.1 dB |
| Output SPL at 63 Hz | 121.8 dB | 108.1 dB |
| Output SPL at 80 Hz | 121.4 dB | - |
| Output SPL at 100 Hz | 121.2 dB | - |
| Output SPL at 125 Hz | 121.1 dB | - |
| CEA-2010-A Average (40-80Hz) | 122.0 dB | 108.1 dB (avg of 3/4 bands) |
| Dimensions | 24.5"H x 18.2"W x 24.2"D (622.3 x 463.5 x 615.9 mm) | 17"H x 17"W x 18"D (431.8 x 431.8 x 457.2 mm) |
| Weight | 115.1 lbs (52.2 kg) | 95 lbs (43.1 kg) |
| Warranty | 5/3 | 5 |
| Cabinet Color | black, white | - |
| Country | United States | United States |
| Measurement Source | Audioholics | Brent Butterworth |
| Drivers | 15" (381mm) driver | 13" (330mm) driver |
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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
Rythmik FV15HP: $1,770 Rythmik Audio eBay
Pros: 15-inch ported driver reaches 122.0dB CEA-2010-A average, matching the output of subwoofers costing significantly more.
Cons: Premium price ($1,770), ported design room gain dependency, and mid-to-large 52 kg footprint.
Full Rythmik FV15HP review and specifications →
| CEA-2010-A Average (40-80Hz) | 122.0 dB |
|---|---|
| Cabinet Color | black, white |
| Country | United States |
| Dimensions | 24.5"H x 18.2"W x 24.2"D (622.3 x 463.5 x 615.9 mm) |
| Drivers | 15" (381mm) driver |
| Enclosure | ported, front |
| Measurement Source | Audioholics |
| Output SPL at 12.5 Hz | 92.8 dB |
| Output SPL at 15 Hz | 105.1 dB |
| Output SPL at 20 Hz | 111.1 dB |
| Output SPL at 25 Hz | 116.1 dB |
| Output SPL at 31.5 Hz | 120.0 dB |
| Output SPL at 40 Hz | 122.5 dB |
| Output SPL at 50 Hz | 122.1 dB |
| Output SPL at 63 Hz | 121.8 dB |
| Output SPL at 80 Hz | 121.4 dB |
| Output SPL at 100 Hz | 121.2 dB |
| Output SPL at 125 Hz | 121.1 dB |
| Warranty | 5/3 |
| Weight | 115.1 lbs (52.2 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
- Rythmik FV15HP vs JTR Speakers Captivator RS1
- Rythmik FV15HP vs HSU Research VTF-15H MK2
- Rythmik FV15HP vs HSU Research VTF-3 MK5 HP
- Rythmik FV15HP vs SVS PB-4000
- Rythmik FV15HP vs Monoprice Monolith M-15 V2
- Rythmik FV15HP vs JTR Speakers Captivator 1400
- Rythmik FV15HP vs Rythmik F18
- Rythmik FV15HP vs Monoprice Monolith M15-S
- See all 24 comparisons
SVS SB13-Plus: $1399 eBay
Pros: Independent CEA-2010 testing records 92.3 dB at 20 Hz and 108.1 dB (avg of 3/4 bands) through 40-80 Hz. The sealed enclosure with 13” (330mm) driver delivers substantial upper-bass output for movie effects and music.
Cons: Deep-bass output is more limited than the strong 40-80 Hz result suggests, so it is not the right choice when the lowest movie effects are the priority. The 431.8H x 431.8W x 457.2D mm cabinet and 43.1 kg mass still require deliberate placement and calibration.
Full SVS SB13-Plus review and specifications →
| CEA-2010-A Average (40-80Hz) | 108.1 dB (avg of 3/4 bands) |
|---|---|
| Country | United States |
| Dimensions | 17"H x 17"W x 18"D (431.8 x 431.8 x 457.2 mm) |
| Drivers | 13" (330mm) driver |
| Enclosure | sealed |
| Measurement Source | Brent Butterworth |
| Output SPL at 20 Hz | 92.3 dB |
| Output SPL at 25 Hz | 97.2 dB |
| Output SPL at 31.5 Hz | 97.2 dB |
| Output SPL at 40 Hz | 108.1 dB |
| Output SPL at 50 Hz | 108.1 dB |
| Output SPL at 63 Hz | 108.1 dB |
| Warranty | 5 |
| Weight | 95 lbs (43.1 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Independently measured by Brent Butterworth; the published figures above come from this ASR subwoofer measurement thread.
- Head-to-Head Comparisons
- SVS SB13-Plus vs Monoprice THX 121456
- SVS SB13-Plus vs BK Electronics Monolith-DF
- SVS SB13-Plus vs RSL (Rogersound Labs) Speedwoofer 12S
- SVS SB13-Plus vs HSU Research VTF-3 MK3
- SVS SB13-Plus vs Rythmik F18
- SVS SB13-Plus vs SVS PB-4000
- SVS SB13-Plus vs HSU Research VTF-3 MK5 HP
- SVS SB13-Plus vs JTR Speakers Captivator 1400
- See all 16 comparisons