The Alesis Strike Amp 12 MK2 is a powerful 2500-watt active drum amplifier designed for electronic drum kits, offering a full-range, flat-response (FRFR) sound. It is engineered to accurately reproduce the dynamic range and nuances of electronic drums, providing a realistic and immersive playing experience. The amplifier features a 12-inch low-frequency driver with a 2.5-inch high-temperature voice coil and a 1-inch high-frequency ceramic driver with a 1.4-inch coil, ensuring clear and powerful sound across the entire frequency spectrum.
Technical Specifications:
- Output Power: 2500 W
- Drivers:
- Low-Frequency: 12.0" (305 mm) driver, 2.5" (63 mm) high-temperature voice coil.
- High-Frequency: 1.0" (25 mm) exit ceramic driver with 1.4" (35 mm) coil.
- Crossover Frequency: 2 kHz
- Maximum SPL: 132 dB (peak) dB-SPL @ 1 m
- Frequency Response: 53 Hz - 20 kHz (+/-3 dB)
- Frequency Range: 44 Hz - 20 kHz (-10 dB)
- Horn Coverage: 90° horizontal x 60° vertical (nominal)
- Connectors:
- (2) XLR+1/4" (6.35 mm) TRS combo inputs (Balanced)
- (1) XLR output (Link)
- (1) IEC power cable input
- Input Impedance: Line: 10 kΩ balanced, 20 kΩ unbalanced
- Gain/Volume Control Range: -∞ to 0 dB, +4 dBu nominal, +10 dBu for max output
- HPF Switch: 100 Hz
- Bluetooth:
- Version: 5.0
- Profile: A2DP, AVRCP
- Codec: SBC
- Range: up to 100 feet (30.5m)
- Power:
- Connection: IEC
- Input Voltage: 100-120V, 50/60 Hz; 220-240V, 50/60 Hz
- Consumption: 1100W
- Fuse: T15AL AC250V; 220-240V T6.3AL AC250V
- Protection: Electronic clip, thermal, and transducer overdrive protection
- Mounting/Installation: Standard 36 mm pole socket
- Operating Temperature: 14°F to 113°F (-10°C to 45°C)
- Dimensions (width x depth x height): 13.9" x 13.8" x 23.9" (351 mm x 354 mm x 607 mm)
- Weight: 34.7 lbs. (15.7 kg)
Usage Features:
The Strike Amp 12 MK2 offers versatile connectivity and control for various setups.
- Power Input and Switch: The amplifier connects to a standard power outlet using the included power cable. A power switch allows for easy on/off control. It is recommended to set the Volume 1/2 knobs to minimum before powering on.
- Dual Inputs (Input 1/2): Two combo XLR+1/4" (6.35 mm) TRS inputs allow for connecting audio sources such as drum modules, mixers, or other instruments. These inputs are balanced for optimal signal integrity.
- Volume Controls (Volume 1/2): Independent volume knobs for each input enable precise level adjustment for connected audio sources.
- Mix Out: An XLR output allows the user to link the amplifier to a mixer or another Strike Amp 12 MK2, facilitating stereo setups or expanding the sound system.
- HPF (High-Pass Filter) Switch: This button activates a 100 Hz high-pass filter, which can be useful in situations where the speaker sounds "muddy" or "boomy" due to room acoustics or stage characteristics. Engaging the HPF reduces low-end frequencies, simulating the effect of placing the speaker on a standard speaker stand.
- Ground Button: This button helps reduce hum or noise that might occur due to ground loops in the audio system.
- Bluetooth Connectivity:
- Bluetooth Pair Button: Pressing and releasing this button puts the speaker into Bluetooth pairing mode. A blue LED flashes during pairing. Once paired, the LED lights solid. Pressing and releasing again disconnects a paired device.
- Bluetooth LED: Indicates the Bluetooth status: flashing blue for pairing mode, solid blue for a paired device, and off when no device is paired.
- Bluetooth Volume Knob: Adjusts the volume of the Bluetooth audio signal. For best sound quality, it's recommended to set the input source volume to 100% and use this knob for overall level control.
- Pairing Process: To pair, power on the speaker, press the Bluetooth Pair button, and then select "STRIKE AMP 12 MK2" from your device's Bluetooth settings. If a pairing code is required, use "0000".
- Unpairing: To unpair a device, press and hold the Bluetooth Pair button for 3 seconds. To unpair and remove a device from memory, press and hold the button for 10 seconds.
- Sig/Limit LED: This indicator provides visual feedback on the audio signal and output status. It lights green when an audio signal is present (flashing at lower levels, solid at higher levels). It lights red when output limit/protection is active, indicating that the audio source volume should be reduced to prevent distortion.
Maintenance Features:
- Fuse: The unit includes a fuse for protection. If the fuse is broken, it can be replaced by lifting a tab, ensuring to use an appropriately rated fuse as printed under the Power Input. Using an incorrect fuse can damage the unit.
- Safety Precautions: The manual emphasizes the importance of following safety guidelines for installation, stand-mounting, and sound levels to prevent injury and equipment damage. This includes inspecting hardware, ensuring stable surfaces for stands, and being cautious in outdoor conditions.
- Troubleshooting: The manual provides guidance for common issues such as distorted sound (lower source volume), hum (check cables, use balanced connections, ensure common ground), excessive bass (adjust tone/EQ, use HPF), high-pitched whistling (feedback, reposition microphone), and Bluetooth connection problems (reposition devices, reset Bluetooth on both devices, re-pair).
The Alesis Strike Amp 12 MK2 is a robust and feature-rich amplifier designed to meet the demands of electronic drummers, offering high power, clear sound reproduction, and flexible connectivity options, including Bluetooth for wireless audio streaming.
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