Short answer: choose between the Axiom ED80P and Martin Audio CDD8 for the deployment, not from the automatic ranking alone. Their driver format, power requirements, coverage, bass reach, output capability, and control features determine which is the more practical PA for a particular room or system.
The case for the Axiom ED80P. High-quality vendor data returns a 4.1 ideal-subwoofer preference score. A 1-inch aluminum-voice-coil compression driver pairs with the 8-inch woofer in a compact passive point-source cabinet aimed at fixed-install and portable use.
The case for the Martin Audio CDD8. Medium-quality vendor data shows a 3.4 ideal-subwoofer preference score. The coaxial Differential Dispersion driver gives point-source summation of the LF and HF sections for consistent coverage, and the ultra-compact enclosure mounts horizontally or vertically for on-wall installation use.
Important trade-offs. Being passive, it needs an external amplifier and crossover, and Axiom has a much smaller North American dealer and service network than JBL, Yamaha or QSC. The vendor measurement’s implied bass reach should be treated with some skepticism for a cabinet this compact. Being passive, it needs an external amplifier and crossover, and its compact on-wall design targets installed foreground music over full PA main duty.
Buy the Axiom ED80P when its stated format, coverage, and system features fit the job better.
Buy the Martin Audio CDD8 when its stated output, control, and deployment strengths better match the system.
Looking for alternatives? See the complete PA & Live Sound rankings.
High-quality vendor data returns a 4.9 ideal-subwoofer preference score.
eBay
Medium-quality vendor data shows a 4.1 ideal-subwoofer preference score.
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Specifications Side By Side
| Axiom ED80P | Martin Audio CDD8 | |
|---|---|---|
| Price | $950 Passive, Discontinued | $960 Passive |
| Ranked | #27 of 47 in 8-Inch PA Speakers | #33 of 47 in 8-Inch PA Speakers |
| Passive | Yes | Yes |
| Configuration | Passive 2-way full-range PA speaker | Passive 2-way coaxial PA speaker |
| Drivers | 8” woofer, 1” compression driver | 8” coaxial woofer, 1” exit compression driver |
| Frequency Response | 75Hz - 18kHz (-6dB, manufacturer specified) | 70Hz - 20kHz (±3dB, manufacturer specified); 55Hz (-10dB) |
| Dimensions | 17.7”H x 9.8”W x 9.1”D (450 x 250 x 230 mm) | 16.1”H x 10.1”W x 9.9”D (410 x 256 x 252 mm) |
| Inputs | Two Neutrik speakON NL4 connectors (input and link) | Low-profile 13A push-lock input and link |
| Amplifier Power | Passive speaker; use external amplification within the 280W AES / 560W program rating | Passive speaker; use external amplification within the 200W AES / 800W peak handling rating |
| Power Handling | 280W AES / 560W program (manufacturer specified) | 200W AES / 800W peak (manufacturer specified) |
| Cabinet Material | 15mm reinforced phenolic birch plywood | Composite material |
| Rigging | M10 and M6 fly points; pole-mount socket | Six M6 inserts for wall/ceiling brackets |
| Bluetooth | No | No |
| Spinorama Preference Score | 3.48 | 1.11 |
| Spinorama Preference Score with Perfect Sub | 4.88 | 4.14 |
| XLR Input | No | No |
| RCA Input | No | No |
| TRS Input | No | No |
| 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 |
| Maximum SPL | 124dB peak (manufacturer specified) | 123dB peak / 117dB continuous |
| Coverage | 60-120° horizontal (asymmetric), 55° vertical average | 80-110° horizontal (user-rotatable), 60° vertical |
| DSP | No (passive, requires external amplifier/DSP) | No (passive; used with a DX-series controller or MA Series amplifier for EQ and limiter presets) |
| Weight | 17.6 lbs (8 kg) | 20.9 lbs (9.5 kg) |
| Crossover Frequency | - | 2.3kHz passive |
| Bass Extension (-3dB) | - | 128Hz (measured, vendor Spinorama data) |
Frequency Response Compared
Both speakers’ spinorama measurements, overlaid. A flatter line is more neutral: peaks sound forward or harsh, dips sound recessed. Each curve is shifted so its average from 300 Hz to 3 kHz sits at 0 dB, so loudness differences between the two are removed and only the shape is compared.
Measurement data: Axiom ED80P (measured by the manufacturer) and Martin Audio CDD8 (measured by the manufacturer), via spinorama.org.
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