The Mackie SRM1550 powered subwoofer is designed from the ground up to be the perfect match for SRM450 and SRM350 speakers, delivering 1200W of raw power paired with a custom high-output 15" woofer for powerful room-shaking performance. The road-worthy internally reinforced Poplar cabinet delivers on the "Built-Like-A-Tank" legacy that the SRM series is known for and its front ported design provides maximum punch and low-frequency extension. The SRM1550 features stereo XLR inputs, full-range, and high-pass outputs plus a variable digital crossover that includes presets for the Mackie SRM350 and SRM450. Get the powerful low end you need from the subwoofer built on the proven SRM legacy.
| Acoustic Performance | |
|---|---|
| Frequency Response (–3 dB) | 50 Hz – 120 Hz |
| Frequency Response (–10 dB) | 40 Hz – 180 Hz |
| Max Peak SPL | 131 dB |
| Crossover Point | 115 Hz plus alignment delay [SRM350] 110 Hz plus alignment delay [SRM450] 60 Hz – 120 Hz [Variable] |
| Slope | 4th order HP, 4th order LP |
| Transducer | |
| Woofer Diameter | 15" (381 mm) |
| Voice Coil Diameter | 3" (76 mm) |
| Subwoofer Diaphragm Material | Paper |
| Magnet Material | Ferrite |
| Power Amplifier | |
| Rated Power | 600W RMS 1200W Peak |
| Rated THD | < 1% |
| Cooling | Convection |
| Design | Class D |
| Input / Output | |
| Input Type | Female XLR Balanced differential (stereo left / right) |
| Input Impedance | 20 kΩ balanced, 10 kΩ unbalanced |
| Full Range Outputs | Male XLR Balanced (parallel with inputs – mono) |
| High Pass Outputs | Male XLR Balanced |
| Line Input Power | |
| US Detachable Line Cord | 100 – 120 VAC, 50 – 60 Hz, 115W |
| AC Connector | 3-pin IEC 250 VAC |
| Power Supply Type | Switchmode |
| Safety Features | |
| Input Protection | Peak and RMS limiting, power supply and amplifier thermal protection |
| Display LEDs | Defeatable front power ON High Pass Mode Input / Limiter Signal |
| Construction Features | |
| Cabinet | 18 mm Poplar plywood |
| Finish | High durability black paint |
| Handles | One on each side |
| Grille | Powder-coated 16 gauge steel |
| Mounting Method | SRM1550 subwoofers are designed to sit on the floor or stage. They are NOT designed to be pole-mounted on top or suspended. The cabinet has no rigging points and is not suitable for rigging. Never attempt to suspend an SRM subwoofer by its handles. |
| Dimensions (H x W x D) | |
| Product | 20.3" (516 mm) x 20" (508 mm) x 26.5" (673 mm) |
| Shipping | 22.8" (579 mm) x 25.5" (648 mm) x 31.3" (795 mm) |
| Weight | |
| Net | 65.5 lbs (29.7 kg) |
| Shipping | 72 lbs (32.7 kg) |
Usually arrives in 5-9 business days.
Usually arrives in 5-9 business days.
Usually arrives in 5-9 business days.
Usually arrives in 5-9 business days.
Usually arrives in 5-9 business days.
Usually arrives in 5-9 business days.
Usually arrives in 5-9 business days.
Usually arrives in 5-9 business days.
Usually arrives in 5-9 business days.
Usually arrives in 5-9 business days.
