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|14th May 2009, 01:01 PM||#1|
Join Date: Dec 2003
Location: Grand Rapids
Threshold FET-10/PC phono settings
I recently bought one of these and it came with a manual. In case someone picks one up w/o a manual here is the information for setting the dip switches and gain:
As for setting up the impedance and capacitance loading - with the top open and the front of the preamplifier facing you, locate the two red 8 position dip switches on the far left side. If a dip switch is set to the left, it is ON. If it switched to the right, it is OFF.
#1 - 22 ohms
#2 - 47 ohms
#3 - 100 ohms
#4 - 1,000 ohms
1-4 OFF = 47k ohms (ie, MM cartridge)
#5 - 1,000 picofards
#6 - 250 picofarads
#7 - 150 picofarads
#8 - 100 picofarads
5-8 OFF = 50 picofarads
To set the gain, locate the two jumper sliders on the middle left of the board. These are colored blue and each cover two pins of a three gold plated prong.
For highest gain, each jumper slide is positioned towards the center of the preamplifer. In this case the exposed pins are those nearest to the front and back of the preamplifier.
For 20dB less gain, the jumpers are located away from each other and toward the back and front of the preamplifier. The exposed pins will be nearest to the center of the preamplifier.
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