EAW MX800i in good working condition.
The MX800i CCEPTM two channel, four-way electronic crossover is designed for fixed installations and touring sound systems. It is supplied configured for use with specific EAW systems. This ensures optimum system performance under all conditions, without the burden of “setting up.” The unit is compact, robust and very reliable, yet simple to service should the need arise.
Overload Protection — Each frequency band has an independent true-RMS above threshold infinite compressor to reduce gain momentarily whenever the preset output limit is approached. This limit is normally set to prevent the power amplifiers from clipping, but may also be set lower to protect particularly vulnerable drivers.
Low Frequency Control —The MX800i’s lowest operating output band incorporates a low frequency control circuit that provides stepdown alignment equalization along with high pass filtering to prevent operation below system cutoff. This equalized filter is controlled to provide maximally extended distortion-free low frequency response at all power levels.
Sub–Bass Mode — Front panel switches select “OFF”, “ADJacent” and “DISTant” sub-bass modes. This maintains the correct sound
balance and source localization regardless of whether or not you use subwoofers, and if used, whether the subwoofer systems are mounted adjacent to the main speaker stacks or located remotely. This function is particularly useful when subwoofers are mounted at ground level and the rest of the system is “flown”.
Phase Compensation — At the crossover points of any multi-way system, the sum of the upper and lower output bands should be flat so as not to cause any peaks or dips in the overall system response. However, this state of affairs occurs only when the two signals being summed are in phase with each other.
The amplitude responses of the filter and loudspeaker may each be correct. But when they are combined, phase errors are almost certain to occur so that the overall response is not flat. Many manufacturers use equalization in an attempt to combat this shortcoming but equalization only attempts to hide the problem; it doesn’t cure it. The result might look acceptable on paper, but listening tests confirm that an equalized system does not yield the sound quality required and is not consistent.
The MX800i CCEPTM incorporates phase correction circuitry, tailored to the specific system for which it is configured. This circuit compensates for the phase response of the drivers and their relative placement in the enclosure to present the listener with accurate, phase coherent sound. Without phase correction, the high frequency drivers in a multi-way system tend to lag behind the low frequency drivers, causing a significant loss of definitibn and intelligibility.
Asymmetrical Filters — The MX800i CCEPTM incorporates independent internal settings for each of the six filters on each channel. Using each filter’s individual settings, we are able to independently adjust both pairs of second order filters used to create the ultimate fourth order slope. This asymmetrical filter design is a key element in the close coupling of the crossover to a particular speaker system to compensate for the acoustical characteristics of individual elements.
- Quick Configuration Programming — all closely coupled system-specific functions are located on an internal plug-in PC board for easy re-configuration.’
- Improved Output Line Drive Capability — 10 Q. output impedance: no need to adjust output balances.
- Meets UL, CSA & European Safety Standards.
- Full Transient Protection — for safe, quiet turn-ons and –
- Enhanced Subwoofer Operating Modes — allows true three-way operation with or without subwoofers.
- Front Panel indicators — each band has LED indicators for signal presence, maximum safe output level and output level
- Rugged Mechanical Construction — built in the USA with heavy gauge materials for improved reliability on the road.