User manual YORKVILLE C1890

[. . . ] Precautions should be taken so that the grounding scheme on the unit is not defeated. An apparatus with CLASS I construction shall be connected to a Mains socket outlet with a protective earthing ground. Where the MAINS plug or an appliance coupler is used as the disconnect device, the disconnect device shall remain readily operable. Do not place this product on an unstable cart, stand, tripod, bracket or table. [. . . ] Use only with cart, stand, tripod, bracket, or table recommended by the manufacturer or sold with the product. Follow the manufacturer's instructions when installing the product and use mounting accessories recommended by the manufacturer. Only use attachments/accessories specified by the manufacturer Note: Prolonged use of headphones at a high volume may cause health damage on your ears. The apparatus should not be exposed to dripping or splashing water; no objects filled with liquids should be placed on the apparatus. Terminals marked with the "lightning bolt" are hazardous live; the external wiring connected to these terminals require installation by an instructed person or the use of ready made leads or cords. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat. No naked flame sources, such as lighted candles, should be placed on the apparatus. Do not defeat the safety purpose of the polarized or grounding-type plug. If the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet. the AC supply cord should be routed so that it is unlikely that it will be damaged. If you need to use an RCA cable to connect, use a standard RCA > ¼-inch adapter such as the APEX AA1/6. 1 = Ground 2 = (+) 0° The Input Sensitivity can be adjusted in two ways, 3 = (-) 180° i. Connect a line in from the line-level source into the YSM's input located at the back of the unit, proceed to rotate the Input Sensitivity control located at the rear of the monitor counter clockwise for minimum/off and full clockwise for maximum gain (sensitivity). Please note, always start with the volume control at minimum (off) and slowly bring up to desired level. If you are using a mixing console to feed the input of the YSM powered monitor, set the db gain control to the desired level and then proceed to the Input Sensitivity control on the YSM powered monitor and adjust to same db level as the mixer, this insures that the overall desired gain is not too much or too little. HF Presets Control Settings (C1890, YSM6 and YSM8) The default setting for the HF (high frequency) is 0 which is a flat response in normal near field conditions. If the room is over dampened it might be desirable to increase the HF trim to +1, this will increase the High Frequency response, the opposite would hold for an under dampened room with a lot of reflections that can become quite challenging for the ears, try settings -1 and -2. As an example, if the monitors are placed in the middle of a room and more low end response is needed, set the select switch to +1. As another example, if your monitors are placed against the back wall as shown in the diagram below, it is recommended that you set the LF setting to -1. Accordingly, if the monitors are placed in the corner of the room, set to -2. [. . . ] Accordingly, if the monitors are placed in the corner of the room, set to -2. Bi-Amplification The common term is bi-amplification, a process which uses two power amplifiers and an electronically accurate `active' crossover network. This type of crossover network divides the signal much more precisely than traditional passive crossover networks. All three monitors, the C1890, YSM6 and YSM8 use bi-amplification, an amplifier dedicated for the tweeter and another for the woofer. [. . . ]