DYNACO Stereo 70 Podręcznik przywracania - Strona 18
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Dynaco Stereo 70 Power Amplifier
Restoration Manual
Detailed Procedure & Guide
Page 18
R0 4-03
4. Obtain another "test" receiver (preferably tube but not mandatory) and connect the
output of one channel to the Dynaco Stereo-70 Right Channel Speaker Terminals 8 Ohm
and Ground.
5. Obtain a 8 Ohm "Test" Loudspeaker and connect it to the Dynaco Stereo-70 Left
Channel Speaker Terminals 8 Ohm and Ground.
6. Have the other channel of the service amplifier directly connected to another
loudspeaker (control speaker) identical to the test loudspeaker. Set the test receiver to
monophonic operation.
7. Starting at very low levels (with the volume control of the test receiver fully
attenuated) bring up the level until you have a soft level available from both the test and
control loudspeaker. Note – it is not necessary to operate the test receiver at high or even
moderate volumes – it is only necessary to raise the level sufficiently to be able to discern
equal loudness from both the test and control loudspeaker.
8. With the balance control of the test receiver centered, the sound from both speakers
should be nearly the same. If there is a noticeable difference one of your output
transformers is defective.
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