Speaker Protection, RampUp Signal Control

Protection Features

RampUp™ Signal Control

Whenever a CS® Series amplifier powers up or comes out of a protect mode, the RampUp circuit activates. While the speakers are disconnected, the RampUp circuit fully attenuates the signal and activates the DDT™ LED. After the output relay closes, the signal slowly and gradually raises up to its set level. The PWR LED will illuminate and the DDT LED will turn off when the signal is no longer attenuated. The RampUp Signal Control circuit has some important advantages over the conventional instant-on circuits:

1.If a signal is present during power-up (or when coming out of protect), the speakers are spared a sudden, potentially damaging burst of audio power.

2.Because the gain is reduced until after the output relay closes, no arcing occurs at the contacts, thereby extending their useful life.

Speaker Protection

All loudspeakers have electrical, thermal and physical limits that must be observed to prevent damage or failure. Excessive power, low frequencies applied to high frequency drivers, severely clipped waveforms, and DC voltage can all be fatal to cone and compression drivers. Peavey CS Series amplifiers automatically protect speakers from DC voltages and subsonic signals. If using an electronic crossover, be extremely careful that the low and mid bands are connected to the correct amplifiers and drivers and not to those designed for a higher frequency band. An amplifier’s clipping point is its maximum peak output power, and some of the higher powered Peavey CS Series amplifiers can deliver more power than many speakers can safely handle. Be sure the peak power capability of the amplifier is not excessive for your speaker system. For more information, see the section on Protection Features.

Fuses may also be used to limit power to speaker drivers, although as current-limiting rather than voltage-limiting devices, they are an imperfect solution, and as the weakest links, they only limit once before needing replacement. Some poor-quality fuses have a signiﬁcant series resistance that could degrade the ampliﬁer’s damping of the speaker’s motion and may even deterio- rate the system’s sound quality. If you elect to use fuses, check with the speaker manufacturer to determine the proper current rating and time lag required.

Do not drive any low frequency speaker enclosure with frequencies lower than its own tuned frequency; the reduced acousti- cal damping could cause a ported speaker to bottom out even at moderate power. Consult the speaker system speciﬁcations to determine its frequency limits.

4080, 3000, 4000 specifications

The Peavey 4000 is a high-performance audio mixing console that has gained popularity among professional audio engineers and musicians alike. Renowned for its robust construction and versatile features, the Peavey 4000 stands out in live sound settings, recording studios, and mobile applications.

One of the main features of the Peavey 4000 is its extensive input capability, with up to 32 channels available. Each channel is equipped with a microphone preamp that delivers clear and precise audio while allowing for a wide frequency response. This ensures that both vocals and instruments can be captured with fidelity, providing an optimal foundation for any audio mix. Additionally, the console includes both XLR and line input options, making it compatible with various audio sources.

The Peavey 4000 also boasts a comprehensive EQ section. Each channel features a three-band EQ, complete with sweepable mid-range frequency control, which empowers users to fine-tune their sound with precision. This flexibility is crucial for tailoring the audio to suit different environments and applications, whether it be a live performance or studio recording.

Built-in effects processing is another standout feature of the Peavey 4000. The console includes a digital effects processor that offers a variety of effects types, such as reverb, delay, and chorus. This allows users to add depth and character to their sound without requiring additional outboard gear. The intuitive interface makes it easy to navigate and apply effects, enhancing workflow during live performances or recording sessions.

Durability is paramount in an audio mixing console, and the Peavey 4000 is constructed with rugged materials designed to withstand the rigors of frequent transportation and use. The solid chassis ensures stability even in challenging environments, while the high-quality faders and knobs are built to endure extensive manipulation.

The Peavey 4000 also provides comprehensive routing capabilities, featuring multiple auxiliary sends, subgroups, and direct outs. This flexibility allows users to create complex mixes while seamlessly integrating external gear, such as monitors and recording devices. In addition, the console features a clear and organized layout, making it accessible for both seasoned professionals and less experienced users.

In summary, the Peavey 4000 is a powerful mixing console that combines versatility, durability, and advanced features. With its exceptional sound quality, extensive EQ options, built-in effects, and rugged construction, it is well-suited for a wide range of audio applications, making it a trusted choice for audio engineers and performers.