Adding loudspeakers to a communications radio
by David Harvey VK2DMH on Wednesday, July 22nd, 2009 | 2 Comments
I want to hook up a Marine radio to my Hi Fi speakers.
Do I need a converter circuit for this ?
If I need a converter device, where can I purchase a cabinet to hold the marine radio and converter?
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It shouldn’t be a problem to plug the speakers directly into the radio. To be sure, check the owner’s manual for your radio to determine what the speaker output impedance is. It should be either 4 or 8 ohms.
I’m guessing that your rock speakers are 8 ohm. If that is the case, simply connect both speakers in parallel to the jack that plugs into the radio.
Even if your hi fi speakers are 4 ohm or 16 ohm, connect them anyway. The loudspeakers will work fine. Just remember that voice transmissions will not have the wide range of audio frequencies (20 Hz to 20 KHz approximately) you get from music. But it will probably sound better than your VHF radio’s built-in speaker. If I remember right, voice frequencies are something like 300 Hz to 3000 Hz, but you don’t need to know that to connect and use your speakers, eh?