OUR PART # HD1221
Mackie's HD1221 2-Way High-Definition Powered Loudspeaker's Class-D Fast Recovery™ amplification produces 1200W of peak system power. High-Definition Audio Processing incorporates next-generation Mackie Active electronics and re-defines powered loudspeakers by implementing Mackie's patented acoustic correction processing for an experience that is unrivaled in the world of portable powered PA systems. The flexible design lets you stack it, pole-mount it, fly it, or even use it as a stage monitor.
This bi-amplified system is compact (even smaller than the legendary SRM450), but still very powerful, providing 500W RMS low-frequency amplifier and a 100W RMS high-frequency amplifier that, when combined, can deliver a max SPL up to 133 dB (calculated, measured maximum SPL of 124 dB).
The HD1221 incorporates Class-D amplifier technology to deliver 1200W of peak system power. Both internal amps are designed using Mackie's Fast Recovery™ circuitry. Other amplifiers can "latch" when pushed to clipping, leading to distorted audio, but Fast Recovery™ amplification reacts instantly to the occasional aggressive transient, drastically reducing the time it takes for the amp to recover, ensuring clean audio under the most demanding of situations.
Mackie incorporating precision crossovers and transducer time/phase alignment processing into the loudspeakers long ago, taking the guesswork out of setting up a perfectly tuned system.
The key to high-definition live sound is the detailed measurement and analysis of the inherent problems of horns and woofers. After that, the creation and application of patented acoustic correction algorithms work to make vocals become clean and intelligible and the highs are smooth and never harsh.
The high-end 12" neodymium woofer features a 3" voice coil and is built to handle the massive power delivered by the low-frequency amplifier. The magnet is made using neodymium, which provides a greater magnetic field with far less material. This makes the woofer extremely lightweight without sacrificing performance. And the large 3" voice-coil is built to handle and dissipate more heat than traditional designs.
The 1.75" compression driver reproduces high-frequencies with a diaphragm made using heat-treated titanium. Heat-treating increases the rigidity of the diaphragm, eliminating distortion that can occur due to inconsistencies on its surface. It also increases the life of the driver, so you can count on high-frequency production for years. The HF driver is mounted to a custom-designed 90 x 50 horn by Martin Audio that not only delivers superior performance for its ultra-compact size, it is also user-rotatable by 90-degrees to work best for the application at hand.
On the back of the HD1221, you'll find a 3-position voicing switch which provides the right tone for the job. Leave it in the "Normal" position for standard PA applications. The "Contour" position adds a small boost to both the high and low end. And if you're using the HD1221 as a stage monitor, you've got the "Monitor" position, which really lets the vocals cut through a monitor mix while keeping stage rumble and feedback to a minimum.
The HD1221's 15 mm thick birch plywood cabinets are rugged, with substantial internal bracing and a coating of durable, textured black paint, and a cold-rolled, powder-coated steel grill provides a sleek look.
NOTE: More specifications can be found in the "Documentation" tab.
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