Mono Subwoofer - This operation is similar to the Stereo Subwoofer operation but in mono. When running subwoofers it is usually recommended to run them in mono mode to achieve a cleaner tighter low end. This operation allows you to run several subwoofers down to a minimum of 2 ohms. To avoid amplifier overheating, never run the amplifier below 2 ohms in this mode. Set up this mode as you would a standard stereo set up. Be sure both channels are set to “SUBWOOF” and the mode switch is set to “MONO.” In this mode you may use the frequency adjustment on the rear of the amp, to control the bass frequency output level. Frequencies may be adjusted from 20Hz to 200Hz.

One Channel Normal/One Channel Subwoofer (BI-AMP) - You may also use your amp to bi-amp your system. You may use one side of the amp to power a subwoofer and the other side to power a full range speaker. Follow the set up guides listed above to mix and match your operations.

PROTECTION:

Limiter - The V4000plus™ 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 lim- iter will activate. 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 exces- sive clipping the limiter will reduce the audio signal enough to minimize the amount of clipping. When the input signal decreases enough that clipping 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 V4000plus™ 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 amplifier automatically detects this problem and discontinues operation for that channel. If one side of your amplifier becomes shorted and 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 out-

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V4000 plus specifications

The American Audio V4000 Plus is a professional-grade mixer designed for DJs and sound engineers looking for a versatile and feature-rich device to enhance their performance. This innovative mixing console combines a range of advanced technologies and characteristics that make it an essential tool for live events, parties, and club performances.

One of the standout features of the V4000 Plus is its four-channel mixer configuration, allowing DJs to mix multiple audio sources seamlessly. Each channel can accommodate both line and phono inputs, providing flexibility for connecting various media players, turntables, and other audio equipment. Additionally, the mixer includes a dedicated microphone input with a three-band EQ, ensuring users can integrate vocal performances effortlessly.

The V4000 Plus also comes equipped with a built-in digital effects processor, offering a variety of effects such as echo, delay, and reverb. These effects can be applied to individual channels or the master output, allowing for creative sound manipulation during performances. The easy-to-use interface enables DJs to tweak effect parameters in real-time, enhancing their creative output.

Another significant feature of this mixer is its LED VU meters, which provide visual feedback on audio levels. This is particularly useful for DJs during live sets, as it helps prevent distortion and ensures optimal sound quality. With a robust construction and user-friendly layout, the V4000 Plus is both durable and intuitive, making it suitable for both beginners and experienced professionals.

The American Audio V4000 Plus also emphasizes connectivity with multiple outputs, including master and zone outputs. This allows users to route their audio signal to different destinations, such as external speakers or recording devices, with ease. Furthermore, the mixer supports USB connectivity, enabling direct audio streaming to and from a computer, making it ideal for hybrid DJ setups.

In summary, the American Audio V4000 Plus is a feature-packed mixer that caters to the needs of modern DJs. With its four-channel configuration, built-in effects, LED VU meters, and extensive connectivity options, it stands out as a reliable choice for anyone looking to elevate their sound mixing capabilities.
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