The Adamson M15 multi-purpose loudspeaker features an extremely low profile, symmetrical pentagon design, with a 50-degree conical waveguide. This unique combination allows any two enclosures to work together in a mirror image monitor configuration.
The M15 is loaded with a single Adamson ND15-L Kevlar Neodymium Driver, marking the launch of Adamson’s Advanced Cone Architecture – This breakthrough technology makes the ND15-L the only 15” driver with zero axial modes in its entire passband, dramatically increasing the linearized mid-range response, while maintaining a rock solid bottom end (impossible to achieve with a 15” paper driver). The top end is covered by a 4” high frequency compression driver, giving it extremely high SPL throughout the bandwidth. The lightweight package (56.5 lbs/25.63 kg) can be equipped with a switchable internal crossover, allowing bi-amped or passive operation.
| Frequency Range (+/-3 dB) | 50 Hz - 18 kHz |
| Nominal Directivity (-6 dB) H x V | 50° x 50° |
| Maximum Peak SPL** | 137.8 dB Active, 137.3 dB Passive |
| Components LF | ND15-L 15" Kevlar Neodymium Driver |
| Components HF | B&C DE1000 4" Diaphragm / 1.5" Exit Compression Driver |
| Nominal Impedance LF | 8 Ω |
| Nominal Impedance HF | 8 Ω |
| Nominal Impedance Passive | 8 Ω |
| Power Handling (AES / Peak) LF | 500 / 2000 W |
| Power Handling (AES / Peak) HF | 140 / 560 W |
| Power Handling (AES / Peak) Passive | 640 / 2560 W |
| Rigging | MASS™ Rigging System |
| Connection | 4x Speakon™ NL4 |
| Height Front (mm / in) | 356 / 14 |
| Width (mm / in) | 724 / 28.5 |
| Depth (mm / in) | 429 / 16.9 |
| Weight (kg / lbs) | 25.4 / 56 |
| Supported Processing | Lake, XTA |
**12 dB crest factor pink noise at 1m, free field, using specified processing and amplification
 | MASS System Multi-Purpose Plate (932-0010) | Rigging plate for M15 |
 | Mass Dual Plate (932-0013) | Dual cabinet rigging plate |
 | MASS System Horizontal Kit W/Plates (932-0025) | Mass system U-bar, assembly and plates |
 | MASS System Dual Axis Kit W/ Plates (932-0026) | Mass system U-bar, L bar, assembly and plates |
 | Mass System Fly Track (pair) (932-0008) | Fly track assembly for M15 |
 | M15 Roadcase Twinpack (900-0005) | Upright case opens vertical for two M15 Cabinets |
| M15 Spec Sheet | One page spec sheet for the M Series M15 | n/a |
| M15 User Manual | User Manual detailing operating instructions for the M15 cabinet | n/a |
| Adamson Load Library V5.4 | Adamson's updated preset library - Requires Lake Controller 7.0.0 or higher | n/a |
| Adamson Amplification Chart V5.3 | Displays the maximum amount of Adamson loudspeakers that can be used with approved amplifiers. | n/a |
| ADAMSON EASE Data V16 | Complete GLL library for all Adamson products | n/a |
| 3D CAD Drawings | 3D CAD Drawings of all M-Series enclosures | n/a |
| XTA Preset Library V40 29dB | V40 contains all the latest, updated presets for Adamson's product line. Only use with amplifiers set to 29dB amp gain. | n/a |
| XTA Preset Library V40 32dB | V40 contains all the latest, updated presets for Adamson's product line. Only use with amplifiers set to 32dB amp gain. | n/a |