Protection, Setup, Speaker Compatibility

HPF (Hi-Pass Filter)

Also known as a low-cut filter, a High Pass Filter rolls off signals below 40Hz. The reproduction of the signal’s bass portion is thus optimized, since ultrCV-low, distracting frequencies are eliminat- ed, and more power is available for the reproduction of the want- ed segment of the signal.

You should set up the filters so they best suit the frequency response of your speakers, since some speakers are particularly sensitive to over-excursion. The 40Hz filter works well with most compact full-range speakers.

Subsonic Frequency Protection : The built-in High Pass Filter provides subsonic frequency protection for each channel. Current limiting Protection : At the amplifier’s full power limit, or clipping point, the limiter circuitry will be activated. This is indicat- ed by illumination of the Clip LED. The channel gain is automati- cally reduced, protecting the speakers from high power. Uncontrolled feedback, oscillations, or improper equipment gain setting may activate this circuitry, which is virtually transparent in operation as full signal bandwidth is maintained.

There is reason to be concerned any time the Protection LED lights up (except for initial power-up during approximately five seconds). If this occurs, turn the amplifier off immediately and check all wiring and external equipment carefully in order to locate and correct the condition.

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PROTECTION

Every model in the CV-Series incorporates protection features. The front panel Protection LED indicates the activity of the speaker connection relay circuitry in each channel. When the protection LED turns on, this circuitry is active, and all connected speakers are muted.

Initial power-up : For approximately five seconds after initial power-up, the protection circuitry is activated and the speaker outputs are muted. If everything is operating normally, you will hear an audible click at the conclusion of this brief period, as the protection circuitry is deactivated and the unit begins delivering signal to the connected speakers. It is normal for the Protection LED to fade gradually after the amplifier is powered off.

Thermal Protection : Abnormally high heat sink temperatures will engage the protection circuitry for the overheating channel only. An output relay disconnects the speakers until normal tem- perature range is restored. The Protect indicator will light to show the protection circuit is active. To guard against this problem, make sure the unit receives adequate ventilation on all sides and that both the front and rear panels are unobstructed. If the power transformer gets too hot, its thermal switch will disconnect all of the secondary power and disconnect both channel outputs.

Short circuit : If output is shorted due to faulty wiring, the ther- mal circuitry will automatically protect the amplifier. If this occurs, the load will be disconnected by the thermal protection circuitry.

DC Voltage Protection : If an amplifier channel detects DC volt- age at the speaker output, the output relay will immediately open to prevent speaker damage.

SETUP

Clip limiter

Clipping is the result of an amplifier running into power supply lim- itation. The maximum output voltage that any amplifier can pro- duce is limited by its power supply. Attempting to output a voltage (or current) level that exceeds the power supply limit will result in a flattening effect on the signal. A clipped waveform exhibits extreme harmonic distortion, making it sound harsh or dissonant. The clip limiter detects this and reduces the gain to minimize the amount of overdrive. To preserve as much of the program dynam- ics as possible, limiting reduces the average program level until peaks barely clip. Each channel has its own clip limiter, which can be switched on or off. When driving full-range speakers, clip lim- iting reduces high frequency distortion caused by bass overload. It also protects higher frequency drivers from excess overdrive and harsh clipping harmonics.

SPEAKER COMPATIBILITY

The CV Series of amplifiers are designed to work with many different speakers on the market. They have been paired with the following Cerwin-Vega speakers. The following compatibility matrix can be used as a reference. (See: www.cerwin-veg com for product specs.)

CV-1800, CV-900, CV-2800 specifications

Cerwin-Vega is a renowned name in the world of audio equipment, celebrated for delivering powerful sound solutions. Among its impressive lineup, the CV-1800, CV-2800, and CV-900 stand out as exceptional choices for both professional and casual audio enthusiasts. These models offer unique features, advanced technologies, and characteristics that cater to diverse audio needs.

The Cerwin-Vega CV-1800 is a powerhouse in the realm of subwoofers. With an 18-inch woofer, it is designed to deliver thrilling bass and unparalleled sound pressure levels. This model boasts a frequency response that extends from 25 Hz to 200 Hz, ensuring that low-end frequencies are not just felt but heard. Its rugged design features a durable MDF enclosure, which minimizes distortion and enhances sound quality. The CV-1800 is equipped with a built-in high-efficiency amplifier, allowing it to produce an impressive output without requiring excessive power. Home theater enthusiasts and music lovers alike will appreciate the dynamic range and impactful performance this subwoofer provides.

The CV-2800, on the other hand, is a robust power amplifier that plays a critical role in amplifying audio signals. This 2-channel amplifier is capable of delivering 2800 watts of peak power, making it suitable for large events and venues. With a variable low-pass filter and a built-in limiter, the CV-2800 ensures sound precision and protection against output clipping. Its rugged construction and advanced thermal management technology contribute to reliability and longevity, making it an ideal choice for both mobile and permanent installations.

Lastly, the CV-900 is a versatile loudspeaker that is equally impressive on its own or as part of a more extensive sound system. Featuring a 15-inch woofer and a high-frequency compression driver, the CV-900 is engineered for clarity, definition, and powerful output. This model provides a frequency response of 45 Hz to 20 kHz, ensuring that it covers a wide range of auditory experiences. The speaker’s lightweight design enhances portability, making it easy to transport for DJ gigs or live performances. Furthermore, its adjustable mounting options allow for flexible placement in various environments.

In summary, the Cerwin-Vega CV-1800, CV-2800, and CV-900 represent a trio of audio solutions that excel in performance, durability, and versatility. Whether you need deep, resonant bass, reliable amplification, or clear, dynamic sound, these models deliver uncompromising quality and exceptional value, embodying the legacy of Cerwin-Vega in the world of audio.