From the Manufacturer
The self-powered DS-4P is an arrayable mid-bass loudspeaker system that provides high power sound reinforcement with extremely low distortion. It was developed to supplement the 70-200Hz band in full-range systems, affording additional mid-bass headroom. The DS-4P is most effective when used in multiples within an array, and easily can be incorporated into conventionally powered or self-powered systems. The DS-4P uses two 12-inch cone drivers in a true horn enclosure. The horn’s flare provides maximum energy transfer in the mid-bands with minimum frequency response ripple. Like all Meyer self-powered loudspeaker systems, the DS-4P exhibits superior performance across virtually all parameters. Because the amplifier and control electronics are optimized for the drivers, the system is able to produce more power with a flatter response and lower distortion. The selfpowered concept simplifies installation, and eliminates amplifier racks and external drive processing. The DS-4P incorporates a two-channel Class AB/H power amplifier, Meyer Sound’s proprietary phase-corrected active processing circuits, and driver protection voltage limiters to ensure exceptional performance and reliability. A laser-trimmed differential input stage affords superior common-mode rejection to allow signal runs through a simple twisted pair cable. Rear panel LEDs indicate AC power and driver protection limiting. The DS-4P’s integral power supply suppresses high voltage transients and incorporates the Intelligent ACTM system. This automates voltage selection, allowing worldwide operation, and additionally provides EMI filtering, soft current turn-on, and surge suppression. Installation of this unit is as simple as providing power and an audio signal source. Servicing in the field is facilitated by the modular design; the entire power amplifier module can be accessed and replaced, if necessary. The rugged cabinet is coated with a textured black finish (carpet covering is an option) for durability and ease of handling. The DS-4P comes standard with six aircraft pan fittings (ring and stud), three on the top and three on the bottom of the enclosure. L-Track rigging can be fitted as an option. Also available is a variety of hanging and arraying hardware to create a complete system. The DS-4P easily integrates with the Remote Monitoring SystemTM (RMS) network and software application. Windows-based RMS displays signal and power levels, driver and cooling fan status, limiter activity, and amplifier temperature for all networked loudspeakers.