User manual B&K ST1430 II

[. . . ] Do not stack anything on top of the amplifier (preamplifier, processor, source. . . etc. ). Leave at least 2-3 inches clearance from the top of the amplifier to the next shelf, component, etc. , to ensure proper ventilation. * If you are at all unsure of what the speaker `ratings' are, contact your dealer. Page 2 The ST1430 series II is a compact, very efficient, three channel power amplifier. It is designed to be used in all types of audio or audio/video systems. The ST1430 series II utilizes high quality electronic circuitry to achieve an environment wherein a detailed, transparent, and highly musical sound can be realized. The high quality parts complement include state-of-the-art solid state devices, 1% metal film resistors, computer grade electrolytic power supply capacitors, and a high capacity toroidal transformer. [. . . ] For more information on the amplifiers output status under various control conditions, refer to the table below. @ CTRL IN Signal Signal No Signal No Signal Button position OUT IN OUT IN Output status Sound Sound Mute Sound @ CTRL OUT Signal Signal No Signal Signal The level controls are an option that can be added to the amplifier. If your amplifier has this option, the balanced inputs are not present. There are three level controls on the back of the amplifier. When using the level controls, first start with them turned all the way up (clockwise). Then adjust them according to your system requirements to match the sound level coming from each speaker. Page 6 Five way binding posts are provided. They are designed to accept a banana-type plug or spade lug connector (shown below) and are color coded for easy identification. The red (+) post should always be connected to the speakers (+) jack. The black (-) post should always be connected to the speakers (-) jack. Spade connector Banana jack Here is a typical amplifier setup: Unbalanced - RCA type connectors accept line input from the preamplifier's unbalanced output connectors. There are three input connectors, one for each channel, that may be used to connect the amplifier to the preamplifier. RCA cable connector - Page 7 Here is a typical input setup: There will most likely be a number of cables involved in the installation of your home entertainment system. Pre-planning is essential in order to maximize system efficiency. We recommend the following as a means of helping you reach that goal: Make a diagram of your proposed system by laying out the relative location of each component in the system. Then lay out the proposed cable runs between them. Number each cable and record its length on the diagram for future reference. Cable runs are critical in that they must be kept away from sources of power radiation (amplifiers, power cords, heaters, etc. . . ). For the sake of safety, they should also be kept out of traffic areas. The process of optimizing the system will include the type of cable, the length of the run, and the obstructions it must deal with along its run. Your dealer can advise you on the products available and their relative merits. If building custom length audio cables is not your strength, your dealer should be able to help you with that as well. When possible, use a separate AC power line for the amplifier, one that is not shared by any other component in the system of any other house hold component. Page 8 Before doing anything, ensure that the power switch on the amplifier's front panel is in the `off' position. Again, it is recommended that you locate a separate AC power outlet for the amplifier, one that is shared by any other audio component in the system or any other house hold component. This will eliminate the possibility of the amplifier `modulating' the power being supplied to the component and compromising the signal originating from that component. Locate the AC power cord provided with the amplifier and plug it into the power input receptacle in the rear panel. Connect the audio cables from your preamplifier's output to the corresponding input connector on the amplifier. [. . . ] Over time you may wish to clean the exterior of the unit by wiping it with a damp cloth to remove any dirt or dust that accumulates on it. Do not let any liquid enter the amplifier thru the vents in the top cover. You may clean the connectors on the rear panel with isopropyl alcohol annually. Page 10 Power rating: 8 ohms 4 ohms Frequency response Input sensitivity THD (S+N) Input impedance Damping factor Current (peak to peak) Slew rate Dynamic headroom S/N (A-weighted) Voltage gain Line voltage Dimensions (O. A. ) Weight Power consumption 125 watts @ 1 kHz 185 watts @ 1 kHz 5 Hz - 45 kHz 1. 0 Volts 0. 09 % @ 1 kHz 33. 2 k ohms 100 30 Amps 14 V / )sec 1. 0 dB 95 dB 28 120/220/240 VAC switchable 17"(w) X 15. 5"(d) X 5. 75"(h) 37 lbs 680 watts max 7. 5 Amps max current draw 60 watts @ no input Line - 8 Amp/250 Volt Slow Blow Rails - 4 Amp/250 Volt Slow Blow Replacement fuses Page 11 B&K Components Ltd. , referred to herein as B&K, warrants your B&K equipment against all defects in material and workmanship for a period of five years from the date of purchase. [. . . ]