MODEL EJ-10 Multi-Input Adapter Box Solve Your Sound Connection Problems The Easy Way…
The EJ-10 Table of Contents Controls and Functions Basic Information Read this section for basic information on what the EJ-10 is: what it includes, how it works, and what you need to use it. Using the EJ-10 with Audio Equipment Read this section for step-by-step instructions for using the EJ-10 in some common situations.
Controls & Functions 1. To (From) Telephone Line – allows any telephone line input. 2. To Telephone Set – allows parallel telephone set connection with EJ-10 – to establish call. 3. Telephone Switch ON-OFF – captures and holds telephone line allowing you to hang up the phone without losing the call – connects EJ-10 to phone line. 4.
11. Hum Switch – connects the shield ground from inputs to output allowing a selection for lowest hum pick up. 12. Volume Control – controls signal volume in any of 4 signal directions: a) Inputs to Microphone Out b) Phone In to Microphone Out c) Phone Input to “Audio Input (Output) No. 4” connector (used for recording) d) Inputs to Phone Out 13.
The EJ-10 Basic Information The EJ-10 is a multi-input adapter box that allows you to use one or more pieces of audio/visual equipment with the speakers and volume of an existing public address (P.A.) or sound system. Several audio devices can be used simultaneously.
This section explains how to use the EJ-10 to properly connect the following audio devices to a microphone input jack (connector) of a sound system.
To Make Connections: 5. Locate the output connector (jack) on the audio device. It may be labeled LINE OUT, AUXILIARY, AUX OUT, EARPHONES, EAR, EXT. SP., PHONO, etc. If the audio device is stereo, there may be two connectors: one for each channel. NOTE: The EJ-10 mixes the stereo signals and sends a balanced, mono signal to the sound system. Some audio devices have AUX or MIC inputs, be sure to use output connectors. 6.
11. Try switching the EJ-10’s HUM switch (on the upper right corner of the EJ-10) back and forth. Set it in the position that produces the least amount of hum. Speaker Level Audio Devices Device Output labeled: SPEAKER OUT This section explains how to use the EJ-10 to connect the following audio devices to a microphone input jack (connector) of a sound system.
7. Check that the volume control on the EJ-10 is turned to MIN, then plug the other end of the patch cord into the jack on the EJ-10 labeled LOUDSPEAKER LEVEL INPUT. (To prevent distortion, the EJ-10’s loudspeaker connector provides a 10 ohm, 20 watt resistive load to the audio device). 8. Plug the XLR microphone connector (the connector on the thick black cord that comes out of the right side of the EJ-10) into the microphone input jack of the sound system. 9.
Playing audio from a portable cassette player into your sound system. Playing audio from a CD player into your sound system. Playing audio from a VCR into your sound system.
Playing audio from miniature voice recorder into your sound system. Playing audio from a reel to reel tape recorder into your sound system. Playing an RF signal into your sound system.
Playing audio from a camcoder into your sound system. Playing an electronic keyboard into your sound system. Playing a guitar into your sound system.
Troubleshooting All Audio Devices (Auxiliary Line Level or Loudspeaker) Symptom Corrective Procedure Hum-background noise Move HUM switch to the other position. Choose the position that produces the least hum. No sound Connection Problems Be sure that you are using both ends of the same patch cord. Cord and plug colors must match. In particular, if you used half of the paired RCA/Mini phone plug cable, be sure you used the same color plug on both ends.
1. Check that the sound system amplifier is on. 2. Check that the microphone volume control knob is on and set to a moderate level. 3. Speak into the microphone to test the sound system. At this point, the microphone should be working. If it isn’t, the sound system itself is not working as needed for proper functioning with the EJ-10. You will need someone to check and perhaps repair the sound system. If the microphone is working, continue with the following steps: 4.
lines. (For information about the FCC registration and telephone connection specifications, see the Technical Information section of this manual.) Practical Telephone Applications The EJ-10 may be used to connect incoming or outgoing signals to the telephone lines. Some applications require an EJ-10 at both ends of the telephone line.
9. It is possible for both parties to speak over the sound system. Caution: the sound levels need to be carefully set to prevent feedback. Play an Audio Device into the Telephone Line To connect an audio device such as a cassette player, record player, compact disc player, and so on to a telephone line, follow these steps: 1. Plug the telephone patch cord provided with the EJ-10 into the TO TELEPHONE LINE connector on the left side of the EJ-10. 2. Unplug the telephone’s own cord from the wall jack.
2. Call the remote location 3. At the remote location, follow the procedure for playing an incoming signal over your sound system as described above (Listen to a Telephone Conversation over Your Sound System). Allow the Proceedings at one Location to be Heard at Another over Telephone Lines (requires two EJ-10’s) To allow the proceedings at one location to be heard at another auditorium over a telephone line, you must have an EJ-10 at both locations. Follow this procedure: 1.
Play an audio device into the telephone line to be heard on a sound system in another location (requires two EJ-10’s).
Allow the proceedings at one location to be heard at another location over the telephone line (requires two EJ-10’s).
Technical Information Model EJ-10 Multi-Input Adapter Box Specifications Inputs: Unbalanced Line Stereo phone, phone, mini phone, & “RCA” phono Speaker Level 1/4-inch phone plug Telephone Line Modular jack (FCC Regulation No. E8P5IE-71393-VP-N; Ringer Equivalence: 0.38) Outputs: Transformer balanced low-impedance (100 ohms) adjustable mic level output on 3-foot cable with make XLR type plug. Telephone modular jack to connect standard telephone for initiating calls.
All metal case mounted inside a black fabric protective zippered case with carrying handle. Supplied interconnect cables attached to clip on back of metal case (cables enclosed by protective case). Architects’ and Engineers’ Specifications The general purpose adapter box shall accept mono or stereo line and speaker level inputs and allow seized connection to the local telephone system and convert them to transformer balanced mic level output.
Limited Warranty The Model EJ-10 is guaranteed for two years from date of original purchase against malfunction due to defects in workmanship and materials. If such malfunction occurs, unit will be repaired or replaced (at manufacturer’s option) without charge for materials or labor if delivered prepaid to the factory. Unit will be returned prepaid.
