13
Use the
/
buttons to select the type of cartridge based upon the specifications and/or type of cartirdge to be used.
After each change of type, the PH-77 will mute for 10 seconds to allow the gain circuit to settle to the new configuration.
Once the desired selection has been made, press the
button to confirm the selection and to continue on to the next
item.
4.1.2 Setting Gain for Input X
“
Setting Gain Input X
” is displayed on the 1
st
line of display; X is “
1/2/3/D
” depending on which one of Input 1/ Input 2/ Input
3 is selected or if the Direct input has been selected.
The 2
nd
line of the display displays the Gain as absolute dB value with four options available for the selected type. The
default setting is for MM/MC Hi is 30dB, for MC Lo it is 54dB.
Use the
/
buttons to adjust gain downwards or upwards. You can step through several levels off gain by repeatedly
pressing the appropriate button. If the gain is left unchanged, after several seconds, the system will use this as the new
gain. After each change of gain the PH-77 will mute for 10 seconds to allow the gain circuit to settle into the new configuration.
Below is the recommended gain settings for a rated cartridge output @ 5cm/s:
Cartridge Output
~13mV
~6mV
~3mV
~1.5mV ~0.8mV
~0.4mV
~0.2mV
~0.1mV
PH-77 Gain
30dB
36dB
42dB
48dB
54dB
60dB
66dB
72dB
Use the nearest lower value of gain for the desired cartridge. As gain settings are applied directly (after a 10 second mute),
one may also set the gain (by ear), to offer a similar loudness as a line level source. Once the selection has been made,
press the
button to confirm the selection and to continue on to the next item.
