Short answer: the OSD Audio AP650, if you are buying new. The Revel M55XC ranks higher than it (#5 vs #10 of 13 outdoor speakers, 3.6/5 vs 2.9/5) but is discontinued, so only consider it used; the OSD Audio AP650 is still sold new at $199.99.
The Revel M55XC is the more accurate pick. Audio Science Review measurements demonstrate a 3.36 preference score that leaps to 6.89 with a subwoofer. Its measured preference score, a predictor of how neutral it sounds, is 3.36 against 2.12 for the OSD Audio AP650. The catch: Compact sealed enclosure limits bass output, with -6dB extension at 90.8Hz and rapid low-frequency roll-off below 100Hz.
The OSD Audio AP650 is the deeper-bass option. Affordable $200/pair price with a solid 6.5” woofer. Its bass reaches about 95.2Hz before falling 3dB, against 112.8Hz for the Revel M55XC. The tradeoff: Preference score is 2.12 (5.30 with sub) due to notable mid-frequency irregularities and uneven directivity through the crossover handover.
Buy the OSD Audio AP650, since the Revel M55XC is discontinued and only worth hunting down used.
Want more options? Browse the full Passive Home rankings.
Specifications Side By Side
| Revel M55XC | OSD Audio AP650 | |
|---|---|---|
| Price | $420 per pair Discontinued | $199.99 per pair |
| Ranked | #5 of 13 in Outdoor Speakers | #10 of 13 in Outdoor Speakers |
| Drivers | 5.25” carbon-infused polypropylene woofer, 1” aluminum dome tweeter with Acoustic Lens waveguide | 6.5” polypropylene cone woofer, 1” silk dome tweeter |
| Configuration | Passive 2-way | Passive 2-way |
| Sensitivity | 86.5dB | 90dB |
| Impedance | 8 ohms | 8 ohms |
| Recommended Power | 20-70W | - |
| Enclosure | Sealed, IP56 weather-resistant | Sealed composite IPX6 all-weather |
| Dimensions | 9.8”H x 7.4”W x 7.1”D (248 x 188 x 181 mm) | 12”H x 8”W x 8”D (305 x 203 x 203 mm) |
| Weight | 7.5 lbs (3.4 kg) | 8.6 lbs (3.9 kg) |
| Bass Extension (-3dB) | 112.8Hz (measured, Audio Science Review) | 95.2Hz (measured, Audio Science Review) |
| Bass Extension (-6dB) | 90.8Hz (measured, Audio Science Review) | 74.7Hz (measured, Audio Science Review) |
| Bass Extension (-10dB) | 67.4Hz (measured, Audio Science Review) | 48.3Hz (measured, Audio Science Review) |
| Spinorama Preference Score | 3.36 | 2.12 |
| Spinorama Preference Score with Perfect Sub | 6.89 | 5.30 |
| Power Handling | - | 150W |
Related Speaker Comparisons
More worthwhile head-to-heads for Revel M55XC:
- JBL Control X Wireless vs Revel M55XC
- Revel M80XC vs Revel M55XC
- Focal Chorus OD 706 V vs Revel M55XC
- Focal 100 OD6 vs Revel M55XC
- Revel M55XC vs RSL Outsider II
Prices on this page were last checked October 4, 2026 at 9:58 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.
As an eBay Partner, we may be compensated if you make a purchase.
The Two Speakers In Full
Revel M55XC: $420 per pair Discontinued eBay
Pros: Audio Science Review measurements demonstrate a 3.36 preference score that leaps to 6.89 with a subwoofer. Smooth off-axis response and tight directivity matching through the crossover handover thanks to Revel’s Acoustic Lens waveguide. Rugged IP56 weather resistance and included InvisiBall mounting hardware make installation straightforward. Measured bass extension of 112.8Hz (-3dB).
Cons: Compact sealed enclosure limits bass output, with -6dB extension at 90.8Hz and rapid low-frequency roll-off below 100Hz. Modest 86.5dB sensitivity means it requires a capable amplifier for open outdoor spaces. Discontinued.
Full Revel M55XC review and specifications →
| Bass Extension (-10dB) | 67.4Hz (measured, Audio Science Review) |
|---|---|
| Bass Extension (-3dB) | 112.8Hz (measured, Audio Science Review) |
| Bass Extension (-6dB) | 90.8Hz (measured, Audio Science Review) |
| Configuration | Passive 2-way |
| Dimensions | 9.8”H x 7.4”W x 7.1”D (248 x 188 x 181 mm) |
| Drivers | 5.25” carbon-infused polypropylene woofer, 1” aluminum dome tweeter with Acoustic Lens waveguide |
| Enclosure | Sealed, IP56 weather-resistant |
| Impedance | 8 ohms |
| Recommended Power | 20-70W |
| Sensitivity | 86.5dB |
| Spinorama Preference Score | 3.36 |
| Spinorama Preference Score with Perfect Sub | 6.89 |
| Weight | 7.5 lbs (3.4 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
OSD Audio AP650: $199.99 per pair Amazon eBay
Pros: Affordable $200/pair price with a solid 6.5” woofer. Klippel NFS tests show reasonably smooth listening window directivity in the lower registers and bass reaching 74.7Hz (-6dB). High 90dB sensitivity makes it easy to power with inexpensive multi-zone amplifiers. Measured bass extension of 95.2Hz (-3dB).
Cons: Preference score is 2.12 (5.30 with sub) due to notable mid-frequency irregularities and uneven directivity through the crossover handover. High-frequency treble rolls off early compared to indoor hi-fi designs.
Full OSD Audio AP650 review and specifications →
| Bass Extension (-10dB) | 48.3Hz (measured, Audio Science Review) |
|---|---|
| Bass Extension (-3dB) | 95.2Hz (measured, Audio Science Review) |
| Bass Extension (-6dB) | 74.7Hz (measured, Audio Science Review) |
| Configuration | Passive 2-way |
| Dimensions | 12”H x 8”W x 8”D (305 x 203 x 203 mm) |
| Drivers | 6.5” polypropylene cone woofer, 1” silk dome tweeter |
| Enclosure | Sealed composite IPX6 all-weather |
| Impedance | 8 ohms |
| Power Handling | 150W |
| Sensitivity | 90dB |
| Spinorama Preference Score | 2.12 |
| Spinorama Preference Score with Perfect Sub | 5.30 |
| Weight | 8.6 lbs (3.9 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- OSD Audio AP650 vs JBL Control 29AV-1
- OSD Audio AP650 vs Polk Audio Atrium 4
- OSD Audio AP650 vs JBL Control X
- OSD Audio AP650 vs JBL Control 25-1
- OSD Audio AP650 vs JBL Control 25T
- OSD Audio AP650 vs JBL Stage XD-5
- OSD Audio AP650 vs RSL Outsider II
- OSD Audio AP650 vs Focal 100 OD6
- See all 11 comparisons