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Subject: Re: Converting Four Wires Intercom Circuit keeping the same Sound Quality

Date: 02/25/02 at 9:16 PM
Posted by: Russ Kincaid
E-mail: russlk@yahoo.com
Message Posted:

In Reply to: Converting Four Wires Intercom Circuit keeping the same Sound Quality posted by Waqar Zaka on 02/25/02 at 7:05 PM:

4 wires does not give better sound quality. 4 wires allows both parties to speak at the same time (duplex operation). With 2 wires, a push-to-talk switch is used. You can use the speaker as a microphone.


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