Notes: Mackie FRS Series power amplifiers deliver phenomenal power at a price that won't break the bank-and in a package that won't break your back. In fact, both weigh just 22 pounds or less. Featuring Mackie Fast Recovery circuitry, FRS Series amplifiers crank out clean, undistorted sound and the ultimate in punch and clarity-even when pushed to the limit. Each model features a high-current switching power supply that is super-efficient, and also ultra-lightweight, so you get maximum power with minimum load-in strain. Sophisticated protection ensures your FRS will always perform reliably, and that it will stay with you for the long haul. Stack them up against any competitor, and you'll see, the FRS amps are simply the highest performing power amps in their class. … Read more
FRS amps feature sophisticated Fast Recovery circuitry for the cleanest sound available. At Mackie, they know that people can often run their amps right up to clipping levels, so they designed these amps to handle this kind of real-world conditions. What they came up with is circuitry that allows the FRS amps to deliver ultimate power, without sacrificing sound quality. When you overdrive an amp with a traditional "negative feedback" design into clipping mode, it creates a feedback loop whereby even once you remove the input signal, the sub-stages of the circuits remain in saturation mode, causing all sorts of nasty harmonic distortion. Fast Recovery technology ensures all these sub-stages stay out of saturation, so even when the amp is driven into clipping mode, it instantly recovers, avoiding the "latching" phenomenon altogether. The result is ultra-clean, distortion free sound..
The switching power supply in the new FRS amps provides many sonic and practical advantages. Being much more compact and weighing considerably less than a conventional linear supply, it helps make the FRS amps super lightweight and ultra-portable. And while switching supplies are becoming more and more popular these days due to their more compact topology, not all switching power supplies are the same.
FRS amps come with complete system protection. Mackie spent hours conceiving of all the possible "what if" user scenarios, imagined all possible failure modes, then designed elaborate protection circuits to ensure that no matter what you do to our FRS amps (well - within reason), they will endure. Built into every FRS amp are a defeatable clip limiter, a subsonic filter and short, under-impedance, over-current and thermal protection.
The power supply also includes real-time monitoring circuitry that keeps track of operating conditions in order to prevent over load failure. The circuitry "checks" the operating temperature, takes into account the maximum current, then manages the power supply accordingly, reducing the power if necessary to protect the power supply and amplifier. As a result, our FRS amps can actually throughput more power than our competitors' models with the same power rating.