TourClass protection | Peavey CD Series specification

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TourClass® protection

Just like Crest Audio’s highly acclaimed Pro series amps, CD series amps incorporate TourClass protection features. Derived from Crest Audio’s extensive experience with the world’s largest sound rental companies, the TourClass group of circuits sets the industry standard for assured protection of internal amplifier circuits and all connected loads.

ACL ACTIVE CLIP LIMITING

At the amplifier’s full power limit, or clipping point, ACL will be activated.This is indicated by illumination of the ACL / IGM LED.The channel gain is automatically reduced, protecting the loudspeakers from potential damage from the high power,continuous square waves that would otherwise be produced. ACL may be activated by uncontrolled feedback, oscillations, improper equipment gain settings, or an equipment malfunction upstream from the amplifi- er. Only steady or excessive clipping (not normal program transients) will trigger ACL. The circuit is virtually transparent in operation and full signal bandwidth is maintained.

IGM INSTANTANEOUS GAIN MODULATION

IGM is an innovative circuit that allows the amplifier to operate safely into loads as low as 4 ohms.When the amplifier sees a load that overstresses the output stage,the IGM circuit adjusts the channel gain to a safe level. This gain control circuit is inaudible in normal use. In addition, if extreme and sustained low impedance is encountered, the amplifier’s output relay will open.

AutoRamp

Auto Ramp operates every time the amplifier is turned on or is reactivated after a protect condition is corrected.This exclusive Crest Audio feature gradually increases gain to the atten- uator setting avoiding unnecessary stress on the loudspeakers.

Thermal Protect

Abnormally high heat sink temperatures will engage the Protect circuit and disconnects the output relays. During this time the Prot LEDs will light red.The cooling fan will continue run- ning at high speed. Normal operation resumes once the amplifier cools to a safe level.

Short Circuit

If an output is shorted (i.e. defective speakers or crossed speaker wires) the output relays will open and the channel will shutdown.After approximately 2 seconds the channel will attempt an AutoRamp re-start. If the short is still present the cycle will repeat. If the short is removed the channel will complete a re-start and operate correctly.

DC Voltage

If an amplifier channel detects DC voltage at its output terminals,the output relay will immediately open to prevent loudspeaker damage. The protect LEDs illuminate.

Subsonic Frequencies

Built-in high pass filtering provides subsonic frequency protection for each channel. In addition, a relay will open if excessive subsonic energy appears at the output.

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CD Series specifications

Peavey CD Series loudspeakers are renowned for their robust design, durability, and high-performance sound, making them ideal for a wide range of applications, including live performances, installations, and mobile sound reinforcement. This series is characterized by its versatile range of passive and powered models that cater to the needs of both professional musicians and audio engineers.

One of the main features of the Peavey CD Series is its exceptional sound quality, achieved through advanced driver technology and precise engineering. The series employs high-performance woofers and tweeters, ensuring a balanced audio reproduction across a wide frequency range. This clarity makes the CD Series particularly attractive for those seeking accurate sound for live music, speeches, or other audio playback.

The construction of the CD Series cabinets is another noteworthy characteristic. Made from high-quality plywood, these cabinets are designed for durability and resilience. The finish is carefully applied to protect against wear and tear, ensuring that the speakers can withstand the rigors of touring and heavy use. The speaker enclosures are also designed to minimize resonance and distortion, further enhancing the sound quality.

The Peavey CD Series incorporates advanced technologies, including the patented Peavey Waveguide technology, which provides a controlled dispersion of sound across the listening area. This feature allows for consistent sound coverage, making the speakers effective for larger venues where audience members are spread out. The result is a more immersive listening experience, regardless of the listener's position.

Additionally, the series includes models with built-in power amplification, eliminating the need for external amplifier setups. These powered speakers often feature integrated DSP (Digital Signal Processing), allowing users to tailor the audio output to suit specific environments or preferences. This level of customization makes the CD Series an appealing choice for those who prioritize versatility in their audio setups.

Overall, the Peavey CD Series represents a fusion of innovation and practicality. With outstanding sound quality, rugged build, and user-friendly features, it serves as a reliable choice for musicians, DJs, and audio professionals alike, offering a seamless combination of performance and durability to meet the demands of any sound reinforcement scenario. Whether for a small venue or a large event, the Peavey CD Series continues to be a favored option in the world of professional audio.