goes into protect mode, the other side will continue to operate normally. During short circuit protection, the "Clip" LED and “Protect" LED will light simultaneously indicating amplifier fault. All channel output during the “Short Circuit Protection" will be interrupted (i.e. no sound output). Short Circuit Protection can usually be traced back to the signal output line (i.e. speaker line). Check the line from the output terminal of the amplifier to the speaker. If this line good, check the internal speaker connections and components. A short circuit will usually be traced to a bad cable or a bad speaker component and is rarely traced to the amplifier itself.

Thermal Protection - A single variable-speed fan on the V1000plus and dual variable speed fans on the V2000plus and V3000plus amplifiers provide adequate cooling. During low level output the fans run at normal speeds. During high output and as heat raises, (exceeding 90°C.), the fans will run at higher speeds to aid the cooling process. If the heatsink temperature exceeds 91°C., the ampli- fier will mute until the amplifier cools down. When the amplifier cools below 90°C., the amplifier will return to normal operations. Be sure not to operate your amplifier below the minimum load ratings to reduce the risk of overheating problems.

Input/Output Protection - The input circuits are isolated by 10k resistors. An ultrasonic network uncouples RF from the output and helps keep the amplifier stable with reactive loads.

Operating Voltage (AC Mains) - The serial number label indicates the correct AC main voltage. Connecting to the wrong voltage is dangerous and may damage the amplifier. Always be sure the source voltage for your areas matches the required voltage for your amplifier.

Gain Controls - The gain controls are located on the front panel and are calibrated in 2dB of attenuation from full gain. It is best to adjust the amplifier so no “hissing” is heard from speakers with no music being played, this will ensure the lowest possible distortion during normal operation.

Low Cut Filter (V2000 and V3000 Only) - The low-cut filter removes extremely low frequencies from the audio signal that could cause speaker distortion or damage. The dip switches on the rear panel allows you to enable or disable the filter for each channel, as well as adjust either a 50Hz or 30 Hz cut-off. Always use the 50 Hz filter setting if you are using the amplifier to drive a distributed line system (also known as a constant-voltage line, 70 volt line, etc.). The dip switches on the rear panel allows you to configure the low cut filter. The diagram below detail the functions of each dip switch, the functions are also printed on the rear panel of the amplifier.

Configuring the Low Cut Filter:

Activating Low Cut Filters - Dip switches 1 and 4 activate and deactivate the Low Cut Filter. Channel 1 filters is control by dip switch 1 and channel 2 filter is controlled by dip switch 4.

Low Cut Frequency Selector - When the Low Cut Filter is activated, dip switches 2 (channel 1) and 3 (channel

2)will control the frequency roll-off. When dip switches 2 and 3 are in the "ON" the filter will cut off frequencies at and below 30Hz, when these dip switches are in the "OFF" position the filter will cut off frequencies at and below 50Hz. Please note: Each channel operates independently of each other allowing each channel to have different filter settings.

OFF

 

 

 

 

ON

1

2

3

4

 

CH. 1

CH.2

1 Low Cut

3 ON=30Hz

On/Off

OFF=50Hz

2 ON=30Hz

4 Low Cut

OFF=50Hz

On/Off

American Audio® - www.americandj.com - Vplus Series Amplifiers Power Amplifier User Manual Page 14

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American Audio Professional Power Amplifier manual Configuring the Low Cut Filter
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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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