Dukane 9A575 Speaker Selector Panel 电路图.pdf

DUKANE MODEL 9A575 SPEAKER SELECTOR PANEL GENERAL DESCRIPTION The DuKane Model 9A575 Speaker Selector Panel is designed for use with DuKane single or dual channel sound systems. Twenty-five speakers may be controlled from this panel by means of four- position selector switches. Used in conjunction with DuKane Model lA485 Master Control Panel and 19A75 Dual Channel Adapter or with DuKane Model 4A11O Intercom Panel and 9A155 Control Panel, the 9A575 Speaker Selector Panel provides faci I ities for two-way intercommunication with any room or area speaker connected to it as well as dual channel program selection. PARTS AND ACCESSORIES (available) Designation Strip: DuKane Part No. 226-355. Plastic Strip: DuKane Part No. 282-5 (cut 15-5/8 in. long). Knob: DuKane Part No. 440-61 (Switchcraft #T-1083-2). 4-Pos. Switch: Grigsby #2 1304-6718LR-6. PREPARATION FOR USE Up to twenty-five separate speaker lines may be connected to the 9A575 Speaker Selector Panel. Where loudspeaker type intercom (as compared with telephone type intercom) is to be part of the sound system, it is recommended that shielded twisted pair of #22 AWG wires (DuKane Cable No. 176-2) be used from speaker stations to the terminals on the speaker selector panel; connect the shield to the “S” terminal beside each pair of terminals on the terminal board at the rear of the selector panel . Output connections to the 9A575 Speaker Selector Panel are made to terminal strips at each side. The intercom line from the intercom panel is connected to terminals stamped “l.C.” at the left - hand side of the speaker selector panel nearest 25 on the terminal board. “OFF” line connections are also made to this strip at terminals stamped “OFF”. 400-98 1 -B RadioFans.CN 收音机爱 好者资料库 Program channel “A” output l ine is connected to hand side of the speaker selector panel nearest 1 connections are made to terminals stamped B”. OPERATION terminals stamped “A” on the strip at the right- on the terminal board. Program channel “B” Normally, all speaker switches are set to the “OFF” position initially. Al I speakers are dis- connected from the console or sound system output until after program adjustments such as tone, volume, radio or phono, etc., have been taken care of properly. Then each room or area speaker intended to receive the program is selected on the switch panel. Depending upon which program channel is to be sent to the room speaker, the selector switch for the speaker is set to “A” or B” . For intercom operation, the speaker selector switch for the room from where the call was made is set to “l.C.“ .Then, normal intercom is carried on by using the TALK-LISTEN switch on the intercom panel . “OFF” line connections to the speaker selector panel are made in order to reach all room or area speakers with emergency “Al I-Cal I” messages without resetting speaker selector switches; all program and speaker lines are disconnected from program and intercom output and connected to “All-Call” output by means of a special “All-Call” switch located on the sound system console. MAINTENANCE No extensive maintenance is required for the DuKane Model 9A575 Speaker Selector Panel. If this panel operates improperly, check all external wiring. Be sure that no bare wire touches another wire or terminals or part of the panel. Loose connections cause intermittent operation. In the event that this panel does not function properly, consult your nearest authorized DuKane distributor or dealer for prompt service. RadioFans.CN 收音机爱 好者资料库 HOW TO USE THE NEW EASY-TO-SEE, EASY-TO-CHANGE DESIGNATION STRIP The new, attractive design in the plastic cover for the designation strip serves a useful purpose as well in that it is a special continuous magnifying lens to help make reading at a glance for the user. To mount the designation strip, first slide the strip into place in the plastic cover. Then, slide each push-rivet fastener into place behind the designation strip; position each rivet with its opening in the panel.Push each fastener into place by pressing on the plastic cover. To remove the designation strip, use a slender screwdriver to pry off the plastic cover. Place a clean cloth or stiff card behind prying tool to prevent any damage to enamel finish on panel.Pry very carefully behind each push-rivet to prevent tearing or scratching the plastic cover.Once removed, the designation may be slid out of the plastic cover for any change to be made. 400-866