Short answer: the Seeburg X8. It ranks #30 of 62 15-inch pa speakers by sound quality, rated 3.5/5, at $2,169. The JBL SRX815P ranks #53, rated 3.0/5, at $1,899, $270 cheaper, which does not close the gap in sound quality.
The Seeburg X8 is the better-sounding option. Bass reaches about 69Hz (-3dB) in vendor Spinorama data, and the coaxial 15-inch design claims 134dB from a 49.6 lbs (22.5 kg) cabinet. The catch: Listening-window narrow-band deviation is 0.571, the worst in this ranking, so the midrange response is noticeably uneven.
The case for the JBL SRX815P: A powered two-way PA speaker from JBL’s SRX800 tour-grade line with a 15” woofer and a compression driver on a waveguide, rated at 2,000W, with onboard DSP presets and XLR/TRS combo inputs. The catch: No independent measurements yet, so its tonal balance and directivity can’t be compared directly with measured speakers; the rating is estimated from its measured three-way sibling, the JBL SRX835P, which Audio Science Review found uneven.
Buy the Seeburg X8. It is rated higher for sound quality, and saving $270 with the JBL SRX815P does not make up for the sound-quality gap.
About the ratings: the JBL SRX815P’s rating is estimated from measured siblings and predecessors rather than its own measurements, with a likely range of 2.6 to 3.4, so this verdict could change once it is measured.
Still deciding? The full PA & Live Sound rankings cover every ranked option.
Specifications Side By Side
| Seeburg X8 | JBL SRX815P | |
|---|---|---|
| Price | $2,169.00 Passive | $1,899.00 each |
| Ranked | #30 of 62 in 15-Inch PA Speakers | #53 of 62 in 15-Inch PA Speakers Estimated |
| Rigging | 9 x M10 inserts; 35mm pole mount | 12 x M10 suspension points; dual 36mm pole sockets |
| Passive | Yes | No |
| Configuration | Passive 2-way coaxial PA speaker | - |
| Drivers | 15” neodymium woofer, 1.4” neodymium compression driver (coaxial) | 15” woofer, compression driver on waveguide |
| Frequency Response | 50Hz - 18kHz (-6dB, manufacturer specified) | - |
| Dimensions | 22.8”H x 17.7”W x 15”D (580 x 450 x 380 mm) | - |
| Amplifier Power | Passive speaker; requires external amplification within the 600W AES / 1800W peak handling rating | 2,000W |
| Power Handling | 600W AES / 1800W peak (manufacturer specified) | - |
| Maximum SPL | 134dB (manufacturer specified) | 137dB peak (manufacturer specified) |
| Coverage | 80° x 60° | - |
| DSP | No (passive) | Yes |
| Weight | 49.6 lbs (22.5 kg) | 63.1 lbs (28.6 kg) |
| Bass Extension (-3dB) | 69Hz (measured, vendor Spinorama data) | 44Hz (manufacturer specified) |
| Bluetooth | No | No |
| Spinorama Preference Score | 3.33 | - |
| Spinorama Preference Score with Perfect Sub | 6.14 | - |
| XLR Input | No | Yes |
| RCA Input | No | No |
| TRS Input | No | Yes |
| Optical Input | No | No |
| Coaxial Input | No | No |
| USB Input | No | No |
| HDMI Input | No | No |
| AES Input | No | No |
| Aux Input | No | No |
| Microphone Input | No | - |
| Guitar Input | No | - |
| Inputs | - | XLR/TRS combo |
| DIY Kit | - | No |
Related Speaker Comparisons
How Seeburg X8 compares with other leading options:
- RCF NX 915-A vs Seeburg X8
- Seeburg X8 vs Vue Audiotechnik A-15
- Seeburg X8 vs RCF ART 745-A MK4
- Seeburg X8 vs JBL SRX835P
- JBL SRX815P vs JBL SRX835P
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
Seeburg X8: $2,169.00 Passive Thomann eBay
Same family: the Seeburg X1 (smaller model, rated 3.4/5), the Seeburg X2 (smaller model, rated 3.6/5), the Seeburg X4 (smaller model, rated 3.9/5) and the Seeburg X6 (smaller model, rated 3.9/5).
Pros: Bass reaches about 69Hz (-3dB) in vendor Spinorama data, and the coaxial 15-inch design claims 134dB from a 22.5kg cabinet. Preference scores of 3.33 standalone and 6.14 with an ideal subwoofer come with a coverage pattern that stays consistent around the horn. Measured bass extension of 69Hz (-3dB).
Cons: Listening-window narrow-band deviation is 0.571, the worst in this ranking, so the midrange response is noticeably uneven. It is a passive cabinet that needs an external amplifier and processor, and the price is high next to powered 15-inch alternatives.
Full Seeburg X8 review and specifications →
| AES Input | No |
|---|---|
| Amplifier Power | Passive speaker; requires external amplification within the 600W AES / 1800W peak handling rating |
| Aux Input | No |
| Bass Extension (-3dB) | 69Hz (measured, vendor Spinorama data) |
| Bluetooth | No |
| Coaxial Input | No |
| Configuration | Passive 2-way coaxial PA speaker |
| Coverage | 80° x 60° |
| DSP | No (passive) |
| Dimensions | 22.8”H x 17.7”W x 15”D (580 x 450 x 380 mm) |
| Drivers | 15” neodymium woofer, 1.4” neodymium compression driver (coaxial) |
| Frequency Response | 50Hz - 18kHz (-6dB, manufacturer specified) |
| Guitar Input | No |
| HDMI Input | No |
| Maximum SPL | 134dB (manufacturer specified) |
| Microphone Input | No |
| Optical Input | No |
| Passive | Yes |
| Power Handling | 600W AES / 1800W peak (manufacturer specified) |
| RCA Input | No |
| Rigging | 9 x M10 inserts; 35mm pole mount |
| Spinorama Preference Score | 3.33 |
| Spinorama Preference Score with Perfect Sub | 6.14 |
| TRS Input | No |
| USB Input | No |
| Weight | 49.6 lbs (22.5 kg) |
| XLR Input | No |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
JBL SRX815P: $1,899.00 each Estimated Amazon eBay
Same family: the JBL SRX812P (smaller model, estimated 3/5) and the JBL SRX835P (larger model, ranked higher, rated 3/5).
Pros: A powered two-way PA speaker from JBL’s SRX800 tour-grade line with a 15” woofer and a compression driver on a waveguide, rated at 2,000W, with onboard DSP presets and XLR/TRS combo inputs.
Cons: No independent measurements yet, so its tonal balance and directivity can’t be compared directly with measured speakers; the rating is estimated from its measured three-way sibling, the JBL SRX835P, which Audio Science Review found uneven.
Full JBL SRX815P review and specifications →
| Released | 2015 (11 years ago) |
|---|---|
| AES Input | No |
| Amplifier Power | 2,000W |
| Aux Input | No |
| Bass Extension (-3dB) | 44Hz (manufacturer specified) |
| Bluetooth | No |
| Coaxial Input | No |
| DIY Kit | No |
| DSP | Yes |
| Drivers | 15” woofer, compression driver on waveguide |
| HDMI Input | No |
| Inputs | XLR/TRS combo |
| Maximum SPL | 137dB peak (manufacturer specified) |
| Optical Input | No |
| Passive | No |
| RCA Input | No |
| Rigging | 12 x M10 suspension points; dual 36mm pole sockets |
| TRS Input | Yes |
| USB Input | No |
| Weight | 63.1 lbs (28.6 kg) |
| XLR Input | Yes |
- 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