User manual PEAVEY ED 300

[. . . ] You have just purchased the world's finest, low-cost power amplifier, the Pv'" 2000. the amplifier features include a 2-way crossover and sub-sonic filter for each channel. The crossover frequency is fixed at 150 Hz, which allows subwoofers to be driven to extremely high sound pressure levels. The sub-sonic filter is fixed at 40 Hz to prevent unwanted low end rumble. [. . . ] To prevent the risk of shock or fire hazard, always be sure that the amplifier is properly grounded. This switch is used to select the crossover capability of this amplifier. With this button depressed, the low frequecies are automatically sent to the corresponding channel. The high frequencies are sent to the HI OUT jack, which can be connected to either the other channel's input or another amplifier. This will cut ultra-low frequencies, protecting speakers from the possibility of over-excursion. The PV professional series of power amplifiers is designed for durability in commercial installations and has the quality of perfomance required in studio and home applications. These units are a standard rack-mount configuration height, and each is cooled by an automatic two-speed internal fan. All input and output connections are on the back panel. Additionally, the level controls, selector switches and the resetable circuit breakers are on the back panel. The front panel contains LED indicators for power and DDT activation and the main power switch. For commercial and other installations where sustained high power operation is required, the amplifiers should be mounted in a standard 19" rack. For example, the ED 300 is rated at 1000 watts RMS per channel into 2 ohms. The Bridge Ratings are 2000 watts RMS into 4 ohms (minimum load). Bridge mode operation is accomplished by placing the mode switch in the "BRIDGE" position, connecting the positive speaker lead to Channel A red binding post, negative speaker lead to Channel B red binding post, and using Channel A as the input channel. All Channel B input functions are defeated, and they serve no purpose now. Another application for Bridge mode operation is to drive sound distribution systems in very large public address applications. In this mode, any of the PV Series power amplifiers can actually drive 70 volt systems directly without using matching transformers. the real advantage of such an approach is primarily cost. 70 volt distribution systems are very common in domestic applications where large numbers of relatively small loudspeakers are used for background music and paging. Such systems require the use of 70 volt transformers at each loudspeaker. Another common use for the Bridge mode is in subwoofer applications where very high power levels are required to reproduce extreme low frequencies. Such enclosures usually contain 2 or 4 loudspeakers to handle the power levels involved. [. . . ] wall or placed in a built-in enclosure that will impede the flow of cooling air. This product should not be placed near a source of heat such as a stove, radiator, or another heat producing amplifier. Connect only to a power supply of the type marked on the unit adjacent to the power supply cord. Never break off the ground pin on the power supply cord. [. . . ]