Clear Com KB-702 2 Channel Wall Mounted Remote Headset Speaker Station Intercom The KB-702 remote speaker station permits the user to select between two channels of party-line communications, with the ability to talk and/or listen on the selected channel. The user can listen via the integral speaker, or may use a headset or telephone-style handset - and can talk via a headset mic, a telephone handset, or a push-totalk microphone. Microprocessor-controlled logic and switching yields a feature-rich intercom station in a compact format. Electronic switching for the talk button, blue-color LED (on), amber color LED (o ), permits momentary or latching operation. For call signaling, a bright LED lights when a call is activated on a connected intercom channel. A defeatable audible call signal, with level control, is also provided. Separate level controls are provided for intercom level and for balanced program input. A local program source may be fed to the station, allowing the user to monitor that source while remaining in contact on the intercom system. The balanced program input can also be used in conjunction with the stage-announce output of a main station to provide a paging interrupt, allowing paging at the KB station even if the intercom volume control is turned down. A set of option dip switches is located at the top of the circuit board. Switches are provided for mic-latch disable (momentary-only talk), long-line operation, channel selection, call signal tracking, and audible call signaling. . Features: Talk/Listen from headset mic, telephone handset or push-to-talk microphone Four modes of operation that are internally programmable via dip switches Balanced local program input with separate level control Visual and audible call signaling Optional 4-wire daughter board for flexibility Wall or console mountable, or optional V-Box for portable or desktop use Built-in speaker Specifications: Headset Microphone Input Input Type: Dynamic Input Impedance: = 1K Mic Limiter Threshold: -2dBu 3dB Mic Limiter Range: = 15dB Program Line Input Maximum Level before Clipping: = 20dBu Input Impedance: = 5K Headset Output Load Impedance: = 8 Output Impedance: = 25 Output Limiter Threshold: +5dBu 3dB Maximum Output Level before Distortion: = 17dBu Speaker Output Load Impedance: = 4 Max Output Level before 1% Distortion: 20dBu 2dBu Partyline Output Off Noise: -74dBu Output Impedance: 10K Partyline Input Crosstalk: -60dB Max level before Clipping : = 12dBu Frequency Response Mic ? Partyline: 300 ? 15kHz 3dB Program Input ? Headset Out: 200 ? 18kHz 3dB Program Input ? Speaker Out: 200 ? 18kHz 3dB Partyline- Headset Out: 200 ? 18kHz 3dB Partyline- Speaker Out: 200 ? 18kHz 3dB Max Distortion Headset Mic ? Partyline: = 0.5% Program Input ? Headset Out: = 0.2% Program Input ? Speaker Out: = 0.5% Partyline- Headset Out: = 0.2% Partyline ? Speaker Out: = 0.5% Noise Headset Mic ? Partyline: -70dBu Program Input ? Headset Out: -60dBu Program Input ? Speaker Out: -60dBu Partyline ? Headset Out: -50dBu Partyline- Speaker Out: -50dBu Max Gain Headset Mic ? Partyline: 41dB 2dB Program Input ? Headset Out: = 18dB Program Input ? Speaker Out: = 24dB Partyline- Headset Out: = 34dB Partyline- Speaker Out: = 40dB Power Input Voltage Range: 20-30 VDC Input Current (Idle): = 90mA Input Current (Max): =110mA Internal Adjustments and Connections Intercom: Line Five terminal connector Program Input: Three terminal connector Option Switches: Three DIP switches Call Signal Jumper3: Three sets of options jumpers Call Alert Tone Level Control: Level adjustment control Environmental 32 ? 122F (0 ? 50C) Dimensions 4.5 x 8.25 x 1.75in (HxWxD) (114 x 210 x 44mm) Weight 0.99lb (0.45kg) Echotone Music LLC is an experienced E-commerce Audio Visual Equipment dealer since 1998. We take pride in selling Pro Audio gear for musicians, sound engineers, production companies and broadcast applications. Shipping --Pro packed shipped USPS, UPS or Freight Service. Contact us pay for 2 day air upgrade on any unit. We are working hard to get your product ( built if needed), processed shipped. Processing times vary, 2-30 days Returns/Refunds- If there is truly a manufacturing defect a return tag will be provided. Otherwise customer pays for return shipping. Returned items must be sealed/unopened to qualify for a full refund. Refunds are for the Item cost only. Gear returned with out all its original packaging, accessories or shows signs of wear, is subject to an additional service fee. This item is now used and it would be unfair to resell to another customer as new. What products can not be returned? - Clearance items, Custom Builds, items identified as non-returnable, discontinued items, used or NOS items, electronic software downloads, demo gear, computers, vacuum tubes, earbuds, harmonicas raw-frame speakers, drumheads, drumsticks, turntable cartridges, fog fluids