SR18S - Speaker MACKIE - Free user manual and instructions
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| Brand | Mackie |
| Model | SR18S |
| Product Type | Active Subwoofer |
| Driver Size | 18 inches |
| Amplifier Type | Class-D |
| Continuous Power Output | 1600 W |
| Peak Power Output | 3200 W |
| Frequency Response | 35 Hz – 125 Hz |
| Maximum SPL | 130 dB |
| Input Connectors | XLR, 1/4" TRS, RCA |
| Output Connectors | XLR Thru |
| Controls | Volume, Low-Pass Filter, Phase Switch, Polarity Switch |
| Power Supply | AC 100–240 V, 50/60 Hz |
| Dimensions (H x W x D) | 24 x 22 x 22 inches (610 x 559 x 559 mm) |
| Weight | 78 lbs (35.4 kg) |
| Enclosure Material | Plywood with black carpet or paint |
| Protection Features | Thermal, Overload, Limiter |
| Cooling | Variable-speed fan |
| Maintenance & Cleaning | Wipe with dry cloth; do not use solvents; keep vents clean |
| Safety Precautions | Use grounded outlet; avoid moisture; do not disassemble |
| Spare Parts & Repairability | Contact Mackie service centers; amplifier module and driver are replaceable |
Frequently Asked Questions - SR18S MACKIE
How do I connect the SR18S to my sound system?
Use balanced XLR or 1/4" TRS cables from your mixer or subwoofer output to the SR18S input. Connect full-range speakers to the Thru output if needed. Ensure the subwoofer is set to the correct input sensitivity.
What is the recommended placement for optimal bass response?
Place the subwoofer on the floor, preferably in a corner or against a wall to reinforce low frequencies. Avoid placing it on stage or near reflective surfaces that cause cancellation. Experiment with phase and polarity settings.
How do I set the low-pass filter?
Adjust the low-pass filter knob to match the crossover frequency of your main speakers. Typically, set it between 80–120 Hz. Rotate clockwise to increase the frequency. Listen for smooth transition between sub and mains.
What does the phase switch do?
The phase switch (0° or 180°) inverts the polarity of the subwoofer output. Use it to align the subwoofer with the main speakers acoustically. Flip the switch while listening to bass tones and choose the setting with louder, tighter bass.
Why is my SR18S not turning on?
Check that the power cord is securely connected to a working AC outlet. Ensure the power switch is on. If the LED is red (protect mode), reduce the input signal level or check for short circuits. If the issue persists, consult a technician.
How do I clean the subwoofer?
Use a dry, lint-free cloth to wipe the cabinet. Gently clean the grille with a brush. Do not use water, solvents, or compressed air. Keep ventilation ports free of dust.
Can I daisy-chain multiple SR18S subwoofers?
Yes, use the XLR Thru output to send the signal to another SR18S. Ensure the impedance load is within the amplifier's limits. Each subwoofer requires its own power outlet.
What is the maximum current draw?
The SR18S draws up to 12 A at 120 V (6 A at 240 V) under full output. Use a dedicated 15 A circuit for reliable performance. Avoid powering multiple high-current devices on the same circuit.
How do I transport the SR18S?
Use a padded cover or flight case. Lift with a team to avoid injury. The unit has handles on the sides. Secure it during transport to prevent damage. Store in a dry, climate-controlled area.
Where can I find spare parts or service?
Contact Mackie authorized service centers. You can find a list on the Mackie website. Common replaceable parts include the amplifier module, speaker driver, and fuses. Do not attempt repairs if under warranty.
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USER MANUAL SR18S MACKIE
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Product information
Brand : MACKIE
Model : SR18S
Category : Speaker