Short answer: the JBL 308P MKII. It ranks #27 of 48 powered bookshelf speakers by sound quality at $498; the Genelec S360 ranks #28 and costs $4775, so there is not much of a tradeoff to weigh.
What the Genelec S360 offers: A large format 10 inch two way monitor built for main monitoring duty in film and post production, capable of a peak SPL over 128dB while retaining Genelec’s GLM calibrated Smart Active Monitoring and Directivity Control Waveguide. Set against that: The bass alignment measures the highest Q of any speaker in this batch, 1.16, meaning it’s the most likely of the ten to show a mild bump near its port tuning frequency rather than a clean rolloff.
The case for the JBL 308P MKII: CEA2034 spinorama shows an essentially flat on-axis response from 45Hz to above 15kHz, with almost no directivity error. The catch: A resonance shows up around 18kHz and a slight dip around 1.4kHz. An electronic limiter creates measurable anomalies around 96dB, and maximum clean output tops out around 105dB SPL before heavy limiting kicks in.
Buy the JBL 308P MKII. It ranks higher for sound quality than the Genelec S360 and costs less, so there is no real case for the other one.
Specifications Side By Side
| Genelec S360 | JBL 308P MKII | |
|---|---|---|
| Price | $4,775 each | $498 |
| Ranked | #28 of 48 in Large Size Powered Bookshelf Speakers | #27 of 48 in Large Size Powered Bookshelf Speakers |
| Enclosure | ported | - |
| Drivers | 1" titanium compression tweeter, 10" cone woofer | 8" woofer, 1" neodymium tweeter |
| Dimensions | 20.9"H x 14.2"W x 14.2"D (530 x 360 x 360 mm) (20.9 x 14.2 x 14.2 in) | 16.5"H x 10"W x 12.1"D (419.1 x 254 x 307.3 mm) |
| Weight | 66.1 lbs / 30 kg (66.1 lbs) each | not published by manufacturer |
| Power Output (Watts) | 350W total (250W woofer, 100W tweeter, Class D) | - |
| Frequency Response | 36Hz-22kHz -6dB | 45Hz - 20kHz (+/-3dB) (Manufacturer specified) |
| Bass Extension (-3dB) | 39.6Hz (measured, Audio Science Review) | 82Hz (measured, Audio Science Review) |
| Bass Extension (-10dB) | 35.6Hz (measured, Audio Science Review) | 60Hz (measured, Audio Science Review) |
| Max SPL | Peak 128dB | - |
| Warranty | 2 years (5 with product registration) | - |
| Country | Finland | - |
| App | - | No |
| EQ | - | No |
| DSP | - | No |
| Output Power | - | 112W total |
Related Speaker Comparisons
More useful head-to-heads from the same speaker class:
- JBL 4329P vs Yamaha HS8
- Neumann KH 310 A vs Yamaha HS8
- JBL 4329P vs Adam Audio T8V
- Focal Alpha 65 EVO vs Genelec S360
- Genelec S360 vs Edifier R2850DB
The Two Speakers In Full
Genelec S360: $4,775 each Bhphotovideo
Pros: A large format 10 inch two way monitor built for main monitoring duty in film and post production, capable of a peak SPL over 128dB while retaining Genelec’s GLM calibrated Smart Active Monitoring and Directivity Control Waveguide. Listening window smoothness measures a solid 0.52 and the measured extension point reaches 39.6Hz, unusually deep for a monitor this size.
Cons: The bass alignment measures the highest Q of any speaker in this batch, 1.16, meaning it’s the most likely of the ten to show a mild bump near its port tuning frequency rather than a clean rolloff. On axis deviation measures a moderate 0.478dB average. At roughly $9,550/pair and 30kg (66 lbs) each it is one of the largest and most expensive entries in this catalog, intended for professional control rooms rather than home listening, and the model has since been updated to the S360A, so pricing and minor spec details should be confirmed with a dealer before buying.
Full Genelec S360 review and specifications →
| Bass Extension (-10dB) | 35.6Hz (measured, Audio Science Review) |
|---|---|
| Bass Extension (-3dB) | 39.6Hz (measured, Audio Science Review) |
| Country | Finland |
| Dimensions | 20.9"H x 14.2"W x 14.2"D (530 x 360 x 360 mm) (20.9 x 14.2 x 14.2 in) |
| Drivers | 1" titanium compression tweeter, 10" cone woofer |
| Enclosure | ported |
| Frequency Response | 36Hz-22kHz -6dB |
| Max SPL | Peak 128dB |
| Power Output (Watts) | 350W total (250W woofer, 100W tweeter, Class D) |
| Warranty | 2 years (5 with product registration) |
| Weight | 66.1 lbs / 30 kg (66.1 lbs) each |
As an eBay Partner, we may be compensated if you make a purchase.
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
JBL 308P MKII: $498 Bhphotovideo
Pros: CEA2034 spinorama shows an essentially flat on-axis response from 45Hz to above 15kHz, with almost no directivity error. Dual 56W Class D amps drive an 8” woofer and 1” tweeter with a smooth, imperceptible crossover transition. Excellent value at $498 per pair.
Cons: A resonance shows up around 18kHz and a slight dip around 1.4kHz. An electronic limiter creates measurable anomalies around 96dB, and maximum clean output tops out around 105dB SPL before heavy limiting kicks in. Some audible tweeter hiss at close range.
Full JBL 308P MKII review and specifications →
| App | No |
|---|---|
| Bass Extension (-10dB) | 60Hz (measured, Audio Science Review) |
| Bass Extension (-3dB) | 82Hz (measured, Audio Science Review) |
| DSP | No |
| Dimensions | 16.5"H x 10"W x 12.1"D (419.1 x 254 x 307.3 mm) |
| Drivers | 8" woofer, 1" neodymium tweeter |
| EQ | No |
| Frequency Response | 45Hz - 20kHz (+/-3dB) (Manufacturer specified) |
| Output Power | 112W total |
| Weight | not published by manufacturer |
As an eBay Partner, we may be compensated if you make a purchase.
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons