Short answer: the Rythmik E15. It ranks #24 of 212 subwoofers by sound quality, rated 4.1/5, at $1,599; the Arendal 1723 Subwoofer 1S ranks #35, rated 3.9/5, and costs $1,650, so there is not much of a tradeoff to weigh.
The case for the Rythmik E15: A compact sealed 15” Direct Servo subwoofer, narrower and shallower than Rythmik’s F15, driven by the 600W H600 amplifier. Watch for: No independent measurements yet, so its output can’t be compared directly with ranked subwoofers; the rating is estimated from the measured sealed Rythmik F12 and ported Rythmik FV15HP (119.3 and 122.0dB in the 40 to 80Hz CEA-2010 bands).
What the Arendal 1723 Subwoofer 1S does well: Premium finish and packing.
Buy the Rythmik E15. It is rated higher for sound quality than the Arendal 1723 Subwoofer 1S and costs less, so only choose the other one for a particular feature it does better.
Worth knowing: the Rythmik E15 has not been measured yet. Its rating is estimated from related models, with a likely range of 3.7 to 4.2, so treat this verdict as provisional.
Still deciding? The full Subwoofers rankings cover every ranked option.
Specifications Side By Side
| Rythmik E15 | Arendal 1723 Subwoofer 1S | |
|---|---|---|
| Price | $1,599.00 | $1,650 |
| Ranked | #24 of 212 in Medium Home Subwoofers (30-75 lbs) Estimated | #35 of 212 in Medium Home Subwoofers (30-75 lbs) |
| Weight | 104.1 lbs (47.2 kg) | 54 lbs (24.5 kg) |
| Dimensions | 19”H x 17”W x 20”D (483 x 432 x 508 mm) | 18.9”H x 13.2”W x 17.7”D (479.8 x 334.8 x 449.8 mm) |
| Country | United States | Norway |
| Warranty | 5/3 | 10/5 |
| Enclosure | sealed | sealed |
| Drivers | 15” servo-controlled woofer | 13.8” (351mm) driver |
| Amplifier Power | 600W | 800W RMS |
| Output SPL at 12.5 Hz | - | 86.5 dB |
| Output SPL at 15 Hz | - | 93.0 dB |
| Output SPL at 20 Hz | - | 98.5 dB |
| Output SPL at 25 Hz | - | 104.1 dB |
| Output SPL at 31.5 Hz | - | 108.5 dB |
| Output SPL at 40 Hz | - | 113.2 dB |
| Output SPL at 50 Hz | - | 117.0 dB |
| Output SPL at 63 Hz | - | 118.5 dB |
| Output SPL at 80 Hz | - | 118.6 dB |
| Output SPL at 100 Hz | - | 118.5 dB |
| Output SPL at 125 Hz | - | 118.1 dB |
| CEA-2010-A Average (40-80Hz) | - | 116.8 dB |
| Cabinet Color | - | black, white |
| Measurement Source | - | Audioholics |
| Frequency Response | - | 19-200Hz, ±3dB |
| Inputs | - | XLR (balanced), RCA |
| XLR Input | - | Yes |
| RCA Input | - | Yes |
| TRS Input | - | No |
| Optical Input | - | No |
| Coaxial Input | - | No |
| USB Input | - | No |
| HDMI Input | - | No |
| AES Input | - | No |
| Aux Input | - | No |
Related Speaker Comparisons
More top alternatives to Rythmik E15:
- Rythmik E15 vs Rythmik F12
- Rythmik E15 vs SVS SB-3000 R|Evolution
- Rythmik E15 vs REL Acoustics T/9x
- Arendal 1723 Subwoofer 1S vs ELAC Varro RS700
- Genelec 7050C vs Arendal 1723 Subwoofer 1S
Prices on this page were last checked October 11, 2026 at 4:59 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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The Two Speakers In Full
Rythmik E15: $1,599.00 Estimated Rythmik Audio eBay
Pros: A compact sealed 15” Direct Servo subwoofer, narrower and shallower than Rythmik’s F15, driven by the 600W H600 amplifier. Sold direct.
Cons: No independent measurements yet, so its output can’t be compared directly with ranked subwoofers; the rating is estimated from the measured sealed Rythmik F12 and ported Rythmik FV15HP (119.3 and 122.0dB in the 40 to 80Hz CEA-2010 bands).
Full Rythmik E15 review and specifications →
| Amplifier Power | 600W |
|---|---|
| Country | United States |
| Dimensions | 19”H x 17”W x 20”D (483 x 432 x 508 mm) |
| Drivers | 15” servo-controlled woofer |
| Enclosure | sealed |
| Warranty | 5/3 |
| Weight | 104.1 lbs (47.2 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- No independent measurement review is linked for this model; it is ranked from hands-on listening and comparison against similarly priced speakers.
- Head-to-Head Comparisons
Arendal 1723 Subwoofer 1S: $1,650 Arendal Sound eBay
Same family: the Arendal 1723 Subwoofer 1V (larger subwoofer, rated 3.9/5), the Arendal 1723 Subwoofer 2S (larger subwoofer, rated 4.1/5) and the Arendal 1723 Subwoofer 2V (larger subwoofer, rated 4.2/5).
Pros: Premium finish and packing. Tight and precise bass with suppleness and dynamics at higher price point. 7-band parametric EQ for room correction. App control (iOS/Android). Flexible driver configuration.
Full Arendal 1723 Subwoofer 1S review and specifications →
| Released | Sep 2020 (6 years ago) |
|---|---|
| AES Input | No |
| Amplifier Power | 800W RMS |
| Aux Input | No |
| CEA-2010-A Average (40-80Hz) | 116.8 dB |
| Cabinet Color | black, white |
| Coaxial Input | No |
| Country | Norway |
| Dimensions | 18.9”H x 13.2”W x 17.7”D (479.8 x 334.8 x 449.8 mm) |
| Drivers | 13.8” (351mm) driver |
| Enclosure | sealed |
| Frequency Response | 19-200Hz, ±3dB |
| HDMI Input | No |
| Inputs | XLR (balanced), RCA |
| Measurement Source | Audioholics |
| Optical Input | No |
| Output SPL at 12.5 Hz | 86.5 dB |
| Output SPL at 15 Hz | 93.0 dB |
| Output SPL at 20 Hz | 98.5 dB |
| Output SPL at 25 Hz | 104.1 dB |
| Output SPL at 31.5 Hz | 108.5 dB |
| Output SPL at 40 Hz | 113.2 dB |
| Output SPL at 50 Hz | 117.0 dB |
| Output SPL at 63 Hz | 118.5 dB |
| Output SPL at 80 Hz | 118.6 dB |
| Output SPL at 100 Hz | 118.5 dB |
| Output SPL at 125 Hz | 118.1 dB |
| RCA Input | Yes |
| TRS Input | No |
| USB Input | No |
| Warranty | 10/5 |
| Weight | 54 lbs (24.5 kg) |
| XLR Input | Yes |
- 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