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Re: [TenTec] 565 low headphone levels

To: "Discussion of Ten-Tec Equipment" <tentec@contesting.com>
Subject: Re: [TenTec] 565 low headphone levels
From: "Roy" <royanjoy@ncn.net>
Reply-to: Discussion of Ten-Tec Equipment <tentec@contesting.com>
Date: Tue, 12 Mar 2013 09:21:31 -0500
List-post: <tentec@contesting.com">mailto:tentec@contesting.com>
About:

"No argument with Barry's suggestion, although I think it would be hard
to find more efficient headphones than 8 ohms."


Efficiency has nothing to due with Z.

The Orion has an effective headphone output Z of about 600 ohms. So with 8 ohm cans, nearly all the audio power is dissipated in the series, matching resistors. Use 500 ohm range cans or do what I do, use the rear speaker jack along with a selector switch from an external speaker or headphones. Then you no longer need to unplug your headphones and wear out the jack.

73,   Roy          K6XK



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