HiFiMAN Shangri-La Jr User Manual - Page 17

Browse online or download pdf User Manual for Amplifier HiFiMAN Shangri-La Jr. HiFiMAN Shangri-La Jr 20 pages. Electrostatic headphone system

Print Page

The Bias Adjustment

(The controls are on the underside of the amplifier under a cover panel.)
Turn on the amplifier for 10-20 minutes.
•
Set the volume to 0 and disconnect headphones and audio inputs.
•
•
Connect TP5 with the black probe of a multimeter and measure the DC voltage of the TP1-TP4
terminals in turn. It should read between 5-10V. If the deviation is too large, please adjust the
potentiometer TP1, and then repeat for TP2 – TP4 until the voltage to ground is equal.
Once completed, please wait 10 minutes and test each channel again to ensure voltage stability.
•
•
Place the cover back onto the amplifier and turn off the power. You may then reconnect the
audio inputs and the headphones.
* Should you find anything unusual or are not able to replace/adjust the 6SN7 tubes, please
contact your local distributor or HIFIMAN customer service.
V2-2
TP5
GND
Bias voltage regulation For 6SN7(0-5V)
Ground (GND)
V2-1
TP4
TP3
L+Left Positive
L-Left Negative
R+Right Negative
16
The Bias Adjustment
V1-2
V1-1
TP2
TP1
R-Right Positive