Short answer: the Klipsch Flexus Sub 100, if you are buying new. The MartinLogan Dynamo 700w measures as well as it (#19 vs #16 of 48 subwoofers, 3.4/5 vs 3.4/5) but is discontinued, so only consider it used; the Klipsch Flexus Sub 100 is still sold new at $349.99.
Why pick the Klipsch Flexus Sub 100: Independent CEA-2010 testing records 90.2 dB at 20 Hz and 109.1 dB (avg of 3/4 bands) through 40-80 Hz. The catch: Only works with Klipsch Flexus soundbars, not as a standalone LFE sub.
The case for the MartinLogan Dynamo 700w: Independent CEA-2010 testing records 86.3 dB at 20 Hz and 109.0 dB (avg of 3/4 bands) through 40-80 Hz. The tradeoff: 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.
Buy the Klipsch Flexus Sub 100 if you want one new; the MartinLogan Dynamo 700w is discontinued, so only look for it used.
Want more options? Browse the full Subwoofers rankings.
Specifications Side By Side
| Klipsch Flexus Sub 100 | MartinLogan Dynamo 700w | |
|---|---|---|
| Price | $349.99 | $999 Discontinued |
| Ranked | #16 of 48 in Small Home Subwoofers (Under 30 lbs) | #19 of 48 in Small Home Subwoofers (Under 30 lbs) |
| Enclosure | sealed | sealed |
| Output SPL at 20 Hz | 90.2 dB | 86.3 dB |
| Output SPL at 25 Hz | 96.7 dB | 88.4 dB |
| Output SPL at 31.5 Hz | 101.2 dB | 94.6 dB |
| Output SPL at 40 Hz | 105.9 dB | 106.3 dB |
| Output SPL at 50 Hz | 109.0 dB | 110.3 dB |
| Output SPL at 63 Hz | 112.4 dB | 110.5 dB |
| CEA-2010-A Average (40-80Hz) | 109.1 dB (avg of 3/4 bands) | 109.0 dB (avg of 3/4 bands) |
| Dimensions | 13.4”H x 13.2”W x 13.7”D (339.9 x 335.0 x 349.2 mm) | 12.5”H x 11.7”W x 12.5”D (318.5 x 296.9 x 318.3 mm) |
| Weight | 20.7 lbs (9.4 kg) | 26.5 lbs (12.0 kg) |
| Warranty | 2/5 | 3 |
| Measurement Source | Brent Butterworth | Brent Butterworth |
| Drivers | 10” (254mm) driver | 10” (254mm) driver |
| Country | - | United States |
| Discontinued | - | Yes |
Related Speaker Comparisons
More worthwhile head-to-heads for Klipsch Flexus Sub 100:
- SVS SB-1000 PRO vs Klipsch Flexus Sub 100
- SVS 3000 Micro vs Klipsch Flexus Sub 100
- Klipsch Flexus Sub 100 vs Klipsch HD Theater 600
- Klipsch Flexus Sub 100 vs ELAC SUB1010
- Klipsch Flexus Sub 100 vs Monitor Audio BRW10
Prices on this page were last checked September 26, 2026 at 11:14 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
Klipsch Flexus Sub 100: $349.99 Amazon eBay
Pros: Independent CEA-2010 testing records 90.2 dB at 20 Hz and 109.1 dB (avg of 3/4 bands) through 40-80 Hz. The sealed enclosure with a 10” driver suits a small room.
Cons: Only works with Klipsch Flexus soundbars, not as a standalone LFE sub. The 339.9H x 335.0W x 349.2D mm cabinet and 9.4 kg mass still need deliberate placement.
Full Klipsch Flexus Sub 100 review and specifications →
| CEA-2010-A Average (40-80Hz) | 109.1 dB (avg of 3/4 bands) |
|---|---|
| Dimensions | 13.4”H x 13.2”W x 13.7”D (339.9 x 335.0 x 349.2 mm) |
| Drivers | 10” (254mm) driver |
| Enclosure | sealed |
| Measurement Source | Brent Butterworth |
| Output SPL at 20 Hz | 90.2 dB |
| Output SPL at 25 Hz | 96.7 dB |
| Output SPL at 31.5 Hz | 101.2 dB |
| Output SPL at 40 Hz | 105.9 dB |
| Output SPL at 50 Hz | 109.0 dB |
| Output SPL at 63 Hz | 112.4 dB |
| Warranty | 2/5 |
| Weight | 20.7 lbs (9.4 kg) |
- 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
- Klipsch Flexus Sub 100 vs Klipsch HD Theater 600
- Klipsch Flexus Sub 100 vs ELAC SUB1010
- Klipsch Flexus Sub 100 vs SVS 3000 Micro
- Klipsch Flexus Sub 100 vs Monitor Audio BRW10
- Klipsch Flexus Sub 100 vs SVS SB-1000 PRO
- Klipsch Flexus Sub 100 vs Klipsch R-10SW
- Klipsch Flexus Sub 100 vs Monoprice Premium Select 8in 200-Watt
MartinLogan Dynamo 700w: $999 Discontinued eBay
Pros: Independent CEA-2010 testing records 86.3 dB at 20 Hz and 109.0 dB (avg of 3/4 bands) through 40-80 Hz. The sealed enclosure with 10” (254mm) 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 318.5H x 296.9W x 318.3D mm cabinet and 12.0 kg mass still require deliberate placement and calibration. Discontinued.
Full MartinLogan Dynamo 700w review and specifications →
| CEA-2010-A Average (40-80Hz) | 109.0 dB (avg of 3/4 bands) |
|---|---|
| Country | United States |
| Dimensions | 12.5”H x 11.7”W x 12.5”D (318.5 x 296.9 x 318.3 mm) |
| Discontinued | Yes |
| Drivers | 10” (254mm) driver |
| Enclosure | sealed |
| Measurement Source | Brent Butterworth |
| Output SPL at 20 Hz | 86.3 dB |
| Output SPL at 25 Hz | 88.4 dB |
| Output SPL at 31.5 Hz | 94.6 dB |
| Output SPL at 40 Hz | 106.3 dB |
| Output SPL at 50 Hz | 110.3 dB |
| Output SPL at 63 Hz | 110.5 dB |
| Warranty | 3 |
| Weight | 26.5 lbs (12.0 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
- MartinLogan Dynamo 700w vs GoldenEar ForceField 3
- MartinLogan Dynamo 700w vs Polk Audio PSW10
- MartinLogan Dynamo 700w vs ELAC IW-S10EQ in-wall
- MartinLogan Dynamo 700w vs Klipsch HD Theater 600
- MartinLogan Dynamo 700w vs ELAC SUB1010
- MartinLogan Dynamo 700w vs Monitor Audio BRW10
- MartinLogan Dynamo 700w vs SVS 3000 Micro
- MartinLogan Dynamo 700w vs Definitive Technology SuperCube 2000
- See all 12 comparisons