ik merk wel dat de buziendingetje iets meer ruisen, maar ik heb er iig weinig last van.
wel merkte ik gisteren dan 1 van mijn msh4's 8 dB zachter was dan de andere, wel een heel groot verschil. Jon heeft mij een beschrijving gegeven hoe je de bias af kan stellen. ik zet het hier ook even neer, misschien dat iemand anders er ook iets aan heeft:
You will need a multimeter and a small phillips head screwdriver.
Unscrew the top of the mic case and remove the circuit board. With the tube facing away from you and the XLR pins on the left, pin 1 of the tube will be at the top of the circuit board. Connect the mic to phantom power, and measure the voltage between pins 3 and 4 (I find it easier to measure pins 3 and 4 separately to ground--XLR pin 1, and compare). Do this for both mics and see if there is a difference.
Usually the bias will be set so there is 0V between pins 3 and 4. If there is positive voltage between pin 3 and 4 on the mic with low sensitivity, the bias setting is too high. Even if you measure 0V, sensitivity can be increased by setting pin 3 below pin 4.
To change the bias, disconnect phantom power, and carefully fold back the transistor to access the trimpot. Reduce the resistance on the trimpot in 10 ohm intervals (you can use the empty holes at R10 to meter the trimpot), reconnect phantom power after each change and check the bias, and see if sensitivity has improved. DO NOT turn the trimpot while phantom power is connected. Be careful making adjustments to the trimpot, less than 1/8 turn is necessary to change the value. This is why I always meter while adjusting--excessive pressure or rotation can damage the trimpot.
al met al ben ik erg tevreden, ik zal straks een opname maken.