OPERATING MODES:

Stereo Operation - Page 10/Figure 9 details an example of a typical stereo set-up. Connect your inputs into channels one and two of the amplifier. Connect your speakers to the outputs on the rear of the amplifier. Be sure that your front gain controls are turned down to their lowest level (full counter-clockwise). Turn your amp on. Turn your input source level up. Use your front gain controls to regu- late the output volume. Be sure not to raise the volume to the clip level, however an intermittent clip signal is acceptable.

Mono Bridge Operation - Page 9/Figure 8 details a mono bridge set-up. Be sure your amplifier and all other audio equipment is pow- ered down. Flip the Stereo/Mono Bridge switch to the Mono Bridge position. Connect an input signal to channel one. Connect your speaker across the red output binding post on the rear of your amplifier. Turn your equipment on (your amplifier should always be the last item you turn on). Apply an input source signal to your amplifier. Turn channel two gain up. Use the channel one gain to regulate your amplifier output.

Bridged-Mono Mode Caution - The voltage across the output terminals of a bridged Vplus series amplifier may equal or exceed 100 volts RMS and may be as high as 130 volts. Use fully insulated CLASS ONE wiring, and the load must be rated for up to 2500 watts (@4 ohms)

PROTECTION:

LIMITER - The Vplus series comes with a built in limiter. When the input signal overloads, the “CLIP LED’s” indicate a signal overload, at this time, the master volume should be lowered to reduce distortion. If the input gain level is not reduced the built-in limiter will acti- vate. During signal overload, the limiter will reduce the input audio signal enough to minimize the amount of clipping. A limiter takes the gain of an overloading signal and reduces it, the reduction in gain reduces distortion that can cause damage to your speakers and amplifier. During normal operation below clipping, and momentary clips on peaks, the limiter does not affect the audio signal and is inaudible. It will allow brief clipping of peaks and will only activate when continuous, hard clipping occurs. During excessive clipping the limiter will reduce the audio signal enough to minimize the amount of clipping. When the input signal decreases enough that clip- ping ends, the limiter will deactivate and cease its gain reduction. The limiter has a fixed threshold and can not be adjusted.

Safe Power Levels at Different Output Loads:

8-Ohm Loads: The amplifier can operate at practically any power level without risk of overheating. However, if it is pushed hard enough to continually light the “CLIP ” indicator, the amplifier’s average output power can reach 150 watts.

4-Ohm Loads: If the “CLIP ” indicator flashes occasionally, the amplifier is approaching its maximum long-term power capacity. If it is lit about half the time, the amplifier channel will probably go into thermal protection within a few minutes.

2-Ohm Loads: Except for an occasional flash, keep the “CLIP ” indicator dark to avoid overheating the amplifier channel. Clipping should be kept to a reasonable minimum. An amplifier’s peak current draw at full output power into 2 ohms is several times what the “normal ” draw is, but its various protection circuits will prevent this condition lasting more than a minute or two.

Short Circuit Protection - The Vplus series amplifiers all come with built-in Output Short Circuit Protects. The Output Short Circuit Protection protects the output devices of the amplifier from short circuits and stressful loads. If your speaker lines short, the ampli- fier automatically detects this problem and discontinues operation for that channel. If one side of your amplifier becomes shorted and

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American Audio Professional Power Amplifier manual Operating Modes
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Professional Power Amplifier specifications

The American Audio Professional Power Amplifier is a key component in the realm of audio technology, designed to deliver high-quality sound reproduction across various applications, from live performances to permanent installations. Renowned for its robust build and exceptional performance, this amplifier brings together sophistication and reliability that meet the demands of professional sound engineers and audiophiles.

One of the standout features of the American Audio Professional Power Amplifier is its high power output, which can exceed 2000 watts in bridged mode. This allows it to drive large speaker systems effectively, producing dynamic range and clarity even at high volumes. The dual-channel configuration offers flexibility, allowing users to power multiple speakers or subwoofers simultaneously, an essential aspect in both DJ setups and band performances.

In terms of technology, the amplifier utilizes Class D amplification, known for its efficiency and lightweight design. Class D amplifiers generate less heat than traditional Class AB designs, allowing for better power handling and longer performance times without the risk of overheating. This efficiency also translates to reduced energy consumption, making it an environmentally friendly choice for both mobile and stationary setups.

The unit comes equipped with a range of protective features, including short-circuit protection, thermal overload protection, and peak limiters to ensure safe operation even under strenuous conditions. These features make it a reliable choice for professionals who cannot afford downtime during critical performances.

Connectivity options are plentiful, with the amplifier offering balanced XLR inputs as well as RCA connections, enabling integration with various audio sources. Furthermore, the output connections typically include binding posts and speakON connectors allowing for secure and reliable speaker connection.

User-friendly controls, such as gain controls for each channel and LED indicators for overload and protection status, make it easy to operate and monitor performance levels. Additionally, its rugged chassis design ensures durability, standing up to the rigors of frequent transport and use in diverse environments.

In conclusion, the American Audio Professional Power Amplifier stands out as a versatile, high-performance solution for professionals in the audio industry. Its powerful output, efficient Class D technology, protective features, and comprehensive connectivity options make it an indispensable tool for anyone seeking high-quality sound reinforcement. Whether for a live show or a fixed installation, this amplifier delivers the reliability and performance needed in professional settings.
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