MLD 9, from Ampetronic, is part of their range of professional audio induction loop systems that also includes the MLD5 and MLD7. Requiring only one 19 inch rack mount space the system is compact, has a robust design and cosmetically appealing. The unit can be used freestanding or rack mounted with the supplied brackets.
The amplifier is capable of driving a wide variety of multiple loop configurations from multiple simple loops to phase shifted array systems for the most challenging customer requirements. Using an Ampetronic MultiLoop Low Loss design, the MLD9 will drive an area up to 3300m² or drive two separate perimeter loops up to 1300m² each.
The system has Class G technology that halves power consumption and heat dissipation
Their design provides optimum efficiency with ample current for standard field strength compliance, coupled with unmatched voltage headroom to ensure crystal clear sound reproduction without clipping or distortion at practical loads. The unit is built to Ampetronics exacting standards and backed by their 5-year return to base warranty.
The flexibility of MLD units allows each output channel to drive separate loops, or two drive two overlaid loop patterns, with or without the selectable phase shift between the two channels.
Two separate perimeter loops can be driven at the same phase or with 90 phase shift. This provides coverage of large areas with no metal losses, or multiple different areas in the same facility.
Two loop layouts can be driven configured as multiple loop segments with or without phase shift. Simple array, low loss array or low spill array designs can create a different performance to optimise field strength over any area, and minimise loop spill for adjacent systems or for confidentiality. Ampetronic can be contacted directly for free advice on all loop applications, design tools and support is available to check the expected performance for your application. Most commonly used design types are low loss and low spill:
MultiLoop Low Loss Systems are used to:
Compensate for high losses due to metal structures
Drive large areas where perimeter loops cause too much variation
MultiLoop Low Spill Systems are used to:
Perform the same tasks as a Low Loss systems, but also minimise spill
confines signal to within 1.5m of looped area, suitable for adjacent rooms e.g. cinemas, classrooms, or confidential applications.