Short answer: the Seeburg X8. It ranks #37 of 76 15-inch pa speakers by sound quality (rated 3.5/5) at $2,169 and is still sold new; the RCF ART 745-A MK4 ranks #44 (rated 3.4/5) and is discontinued, so it is only an option used. The RCF ART 745-A MK4’s replacement, the RCF ART 745-A MK5, is rated 3.5/5 at $1,149.
Why pick the Seeburg X8: A passive coaxial 15 inch PA speaker with loud output and coverage that stays consistent around the horn. The catch: Listening-window narrow-band deviation is 0.571, the worst in this ranking, so the midrange response is noticeably uneven.
Why pick the RCF ART 745-A MK4: A discontinued 15 inch powered PA speaker with a large compression driver for strong vocal headroom in a fairly light cabinet. The tradeoff: The low-quality vendor data is truncated and does not yield a preference score.
Buy the Seeburg X8. It is rated higher for sound quality and still sold new, while the RCF ART 745-A MK4 is discontinued.
Looking for alternatives? See the complete PA & Live Sound rankings.
Prices on this page were last checked November 7, 2026 at 7:34 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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Specifications Side By Side
| Seeburg X8 | RCF ART 745-A MK4 | |
|---|---|---|
| Price | $2,169.00 Passive | $1,699.00 Discontinued |
| Ranked | #37 of 76 in 15-Inch PA Speakers | #44 of 76 in 15-Inch PA Speakers |
| Rigging | 9 x M10 inserts; 35mm pole mount | M10 fly points; pole mount |
| Passive | Yes | No |
| Configuration | Passive 2-way coaxial PA speaker | Active 2-way bass-reflex PA speaker |
| Drivers | 15” neodymium woofer, 1.4” neodymium compression driver (coaxial) | 15” woofer, 1.4” exit/3” diaphragm compression driver |
| Frequency Response | 50Hz - 18kHz (-6dB, manufacturer specified) | 45Hz - 20kHz (manufacturer specified) |
| Dimensions | 22.8”H x 17.7”W x 15”D (580 x 450 x 380 mm) | 27.9”H x 17.4”W x 15.2”D (708 x 442 x 387 mm) |
| Amplifier Power | Passive speaker; requires external amplification within the 600W AES / 1800W peak handling rating | 1,400W peak / 700W RMS (1,000W LF + 400W HF peak, manufacturer specified) |
| Power Handling | 600W AES / 1800W peak (manufacturer specified) | - |
| Maximum SPL | 134dB (manufacturer specified) | 133dB peak (manufacturer specified) |
| Coverage | 80° x 60° | 100° x 60° |
| DSP | No (passive) | Yes, FiRPHASE, EQ, limiting and protection |
| Weight | 49.6 lbs (22.5 kg) | 41.4 lbs (18.8 kg) |
| Bass Extension (-3dB) | 69Hz (measured, vendor Spinorama data) | 65Hz (measured, vendor Spinorama data) |
| 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 | No |
| Guitar Input | No | No |
| Inputs | - | XLR/jack combo input; XLR output |
| Crossover Frequency | - | 650Hz (manufacturer specified) |
| Cabinet Material | - | Polypropylene composite |
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