Knowledge Document - General Audio Troubleshooting
Author: Joe McNeal
General Checklist for Troubleshooting Audio Issues
- NO Sound coming out of Phonic Ear System
- Check 3.5mini connection at interface plate and computer.
- Check to make sure Y-cord going to the input on the back of the Phonic Ear is connected snug.
- Check on the computer to make sure the volume is not muted or soundcard playback is turned up.
- On PC – RealTek – make sure the corresponding fader that the VGA audio is plugged into is turned up all the way in the "mixer" tab of RealTek and is panned straight up the middle. I.E. Front Green In turned up all the way and square is in center position. On Mac – make sure the Output fader is turned up and panned up the center via the Sound Settings.
- Make sure the projector Vol. is not low. 17 – 20 is a desired setting. Can do this using the projector remote.
- Make sure the corresponding knob (input) on the Phonic Ear is turned up.
- Screeching sound or high pitched sound when using the Microphone
- Microphone volume is to high. Turn down Ch. A or B for phonic ear microphones.
- Turn down Amplifier input for Audio Technica microphones or Volume dial inside the Audio Technica pack or handheld
- Microphone is cutting in and out in the classroom
- Is the microphone not facing a sensor when it's cutting in and out? Find the trouble area and see if the Channel green light goes to red in that spot. If so, the Microphone is losing it's line of sight to the dome or Phonic Ear Amp.
- Is the battery on the Phonic Ear Microphone charged up? If it is dying the Microphone will be green and periodiacally flash red to indicate battery is dying.
- Check to make sure the dome sensor has a green light indicating it's on and working.
- For Audio Technica mics or others make sure the batteries are fresh and or try new battery's as a test to see if that is why the mic is cutting out.
- How to hook up a Y – cord to a Phonic Ear system for direct PC audio (without needing projector on), for an Ipod, or for a boom box connection
- On the Phonic Ear there are 2 inputs on the back left (if facing from front). They are CD/Computer/Data Projector AND DVd/TV/VCR. The inputs are RCA – Red and White. The Y-cord can be plugged in (red/white) into whichever input is not being used. 1 is used to carry the Combo player and computer audio. Leave that as is and plug in the Y-cord to the open input. Then plug the 3.5 mini end into the computer instead of VGA audio OR plug it into the headphone out of the Ipod or Boombox
- Digital Phonic Ear Amp (blue) goes to sleep while audio is playing from PC or Combo player?
- Instruct teacher to do the following: Turn up projector Volume to 17 or above (set). Do this for PC and DVD/VCR by switching on MLC and using the projector remote. Once set, the teacher is NOT to use the MLC lighted dots volume knob. They are to then keep the projector volume above 17 and to adjust volume up or down directly on the Phonic Ear Amp – with whichever knob the input is plugged into – Either DVD/TV/VCR OR CD/Computer/Data Projector.
- This will keep the level high and should stop the Amp from going to sleep while audio is playing. NOTE – if audio is stopped even with the high settings the amp may go to sleep but if the settings are kept when audio begins playing again the Amp should wake itself up. Also it will wake up if the mic is turned on.
- LAST NOTE – I will be coming to your building and labeling the front of the Phonic Ear Amps so that the knobs make more sense to all staff on what Volume is what. The DVD/TV/VCR and CD/Computer/Data Projector are confusing and not true to the inputs we have (iPod, Boom Box, Computer Direct connection, and Computer & Combo player audio). This should help to clear things up going forward
- How do I hook up a cord to use Smart Recorder or output to a hearing impaired student mic?
- The Phonic Ear systems have an "AUX" out on the back of the Amplifier. It is a Mono RCA connection. To output to a computer to record you will need a RCA to 3.5 mini cord (which I can provide). Typically the Amp will need to be fairly close to the computer for the cords I have are 12 ft. or shorter. Apply the RCA end to the AUX out on the back of the Amp and then plug the 3.5 mini to the Mic/Line input on the computer. Make sure the record settings (volume) are turned up on the computer Sound Card and that the AUX out knob on back of the Phonic Ear is turned up as well.
- For a hearing impaired student mic, simply apply the RCA end to the AUX out on back of Phonic Ear. Again make sure the AUX out knob is turned up. Apply the 3.5 mini end to the Impaired students "input" on their microphone. Once this is in place the teacher can use the regular Phonic Ear microphone and have their speech go directly into the students ear and eliminate the need to wear 2 microphones.