Question about Radio Communications
Ok, I am a doctoral student in Audiology. We are trying to set up an experiment where we present a stimulus over speakers three different ways; left speaker, right speaker, and then both. Can I do this with a Radio Shack 40 w PA amplifier. This is what my supervisor has gotten for use. I currently have the speakers wired in series per the manual, but I can only get stimulus out of both speakers when set to left and both, and nothing when set to right. Can I actually do this experiment with the equipment I have been provided?
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Posted on Jan 02, 2017
SOURCE: Sound, But VERY VERY quiet
I have the identical model and also had the same problem. I took it in to an appliance repair and they found a problem with the output circut something about a burnt transistor is what they said. I had them replace it and has been working fine since. Hope this helps.
Posted on Feb 08, 2008
SOURCE: CB radio PA speaker
Freddy, hello. The first thought that comes to mind with your problem is that if the 29 is an older model, the audio circuit or audio chip could be tired. If your talking about the receive volume being low thru the ext. speaker, then there is a rx. wire inside the mic cord. When it breaks, it cuts the volume in about half. The rx. wire is on pin # 4. Maybe your using the wrong ohm value speaker. You need 4 or 8 ohm. If you are refering to the outgoing modulation being real low, then the radio mod. has just been turned down to 50-60%. That's about all I've got for now, not being able to actuallly see the radio,,, Have a good day, and let me know how it goes,, Mechanic
Posted on Oct 31, 2008
There are some different things you could be facing like:
the speaker sound being cut-out by the mic switch, but my first guess is the switch in the external spkr. jack being faulty. Here is a schematic for you.
Posted on Apr 12, 2010
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