User manual QSC AUDIO MVH-1090

[. . . ] The tri-amp setting provides a built-in passive crossover network between high and very high frequency drivers. Separate amplifiers and active crossovers are required for the low, mid, high-very high frequency channels. Quadamp setting disables the internal high-very high frequency crossover and each driver is driven independently by its own amplifier and active crossover; one each required for the low, mid, high, and very high frequency drivers. The MHV-1090 components come pre-assembled to reduce field assembly time. [. . . ] The mid-high assembly is equipped with an aiming sight to assist in achieving desired coverage quickly and easily. For typical applications, the aim point should be the center seat in the back row of the auditorium. If the cinema screen has already been installed, a flashlight placed at the desired aiming point can be seen through the screen perforations in a darkened auditorium. Where the sight holes are located: How to use the sights: Aim point: Settings and Connections TRI-AMP / QUAD-AMP Operating Mode Selection Set the operating mode selector switch to TRI-AMP or QUAD-AMP, depending on your screen channel signal processing and amplification set-up. The mid frequency driver will require connection to its rear cover terminals, regardless of mode selection. The low frequency driver will also require its own, separate connections. The only connection difference between tri-amp and quad-amp modes is in quad-amp mode, the very high frequency signal will require connection to the terminals labeled VHF. TRI-AMP-When set to TRI-AMP, the MHV-1090 input panel connections accept high frequency/very high frequency signals on one set of inputs and uses an internal crossover network between the high and very high frequency drivers. QUAD-AMP- When set to QUAD-AMP, the MHV-1090 input panel accepts separate high and very high frequency signals on two separate sets of inputs. The internal crossover network is bypassed and only the protective circuitry for the high frequency and very high frequency driver remains. Each of the driver's signals must have the appropriate upstream signal processing. ·Do not connect amplifiers directly to the high/very high frequency coaxial driver inputs!· Always use the crossover INPUTS terminal strip for high and very high frequency input(s) ·The mid frequency driver and the low frequency enclosure are connected directly to their own separate amplifiers regardless of mode selector switch setting. Mode selector switch set to TRI-AMP and the required HF/VHF connection: HF/VHF Mode selector switch set to QUAD-AMP and the required separate HF and VHF connections: VHF HF 2 INPUTS Terminals The MHV-1090 has barrier strip screw terminals that accept up to #10 AWG (5. 3mm2) stranded loudspeaker wire. Use the largest wire size and shortest wire length for the application. OUTPUTS Terminals The OUTPUT terminals are factory-connected to the high and very high frequency drivers. These terminals should ONLY be connected to their respective driver. Do not connect signals to these terminals as all protection and equalization circuitry will be bypassed. They are not for daisy chaining the signals to other drivers. Maintain proper loudspeaker connection polarity throughout the entire system for maximum performance. Do not apply full range signal to the MHV-1090!There is a high/very high frequency passive crossover for tri-amp mode only. [. . . ] is not liable for any damage to amplifiers, or any other equipment that is caused by negligence or improper installation and/or use of this loudspeaker product. QSC Audio Products 3 Year Limited Warranty QSC Audio Products, Inc. ("QSC") guarantees its products to be free from defective material and / or workmanship for a period of three (3) years from date of sale, and will replace defective parts and repair malfunctioning products under this warranty when the defect occurs under normal installation and use - provided the unit is returned to our factory or one of our authorized service stations via pre-paid transportation with a copy of proof of purchase (i. e. , sales receipt). This warranty provides that the examination of the return product must indicate, in our judgment, a manufacturing defect. [. . . ]