[Boatanchors] Audio matching xformer

[Bob Sullivan]

Barrie,

Using Ohm's law you will find that the 10-watt tap corresponds to 500-ohms 
which is close enough to match your 600-ohm output to the speaker. Have at 
it!  Hi.

73, Bob
WØYVA
Personal site: http://www.isquare.com/personal_pages/ras-hardware.htm


At 07:11 PM 10/14/2007, Barrie Smith wrote:
>Hello, All:
>
>I usually listen to my SX-73 using an old and tired Hallicrafters 600 ohm 
>speaker, because 600 ohms is the audio output on that receiver.
>
>I'd like to try a better quality speaker, but the speakers I have are all 
>8 ohm.
>
>I have a 70 volt, 10 watt line-transformer, but I can't make sense of the 
>schematic.
>
>The secondary is marked 4, 8 and 16 ohms, so that's FB.
>
>The primary is marked in watts: Common, 10, 5, 2.5, 1.25 and .62 watts.
>
>I would think that if this transformer could match 600 ohms to 8 ohms the 
>primary would be marked in ohms.
>
>I do not want to damage the receiver, so does anyone have an idea what's 
>going on?
>
>73,
>Barrie, W7ALW, DN36au,
>QRV 6M, 432 & 1296 EME
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