Dear Group DIY members,
this is my first post in this forum and I'm very much looking forward to participating in the discussions taking place here!
I just finished soldering my first DIY project and did two AML 1073 Pres. It was great fun and basically I thought that I really did a decent job.
One of them is working just fine and sounds great.
Unfortunately the other unit isn't working as expected :-(. It doesn't really amplify the microphone signal.
The ground noise is increasing as I turn up the gain knob and I can hear a very thin and quiet microphone signal which is just barely audible and not changing in volume weather the gain knob is turned up or down.
I have absolutely no knowledge in electronics (although I'm about to learn how to read a multimeter ) and no idea where to start troubleshooting....
As a first step I was told to measure the resistance between the hot and cold pin of the XLR connector in the two different modes.
The results where as follows (within the 2k range):
1200 -> .058 Ohm
300 -> .018 Ohm
Do you guys have an advice where to start looking for errors and how to do it?
Thank you very much and again thanks for having me in this great forum!
Cheers
Flo
this is my first post in this forum and I'm very much looking forward to participating in the discussions taking place here!
I just finished soldering my first DIY project and did two AML 1073 Pres. It was great fun and basically I thought that I really did a decent job.
One of them is working just fine and sounds great.
Unfortunately the other unit isn't working as expected :-(. It doesn't really amplify the microphone signal.
The ground noise is increasing as I turn up the gain knob and I can hear a very thin and quiet microphone signal which is just barely audible and not changing in volume weather the gain knob is turned up or down.
I have absolutely no knowledge in electronics (although I'm about to learn how to read a multimeter ) and no idea where to start troubleshooting....
As a first step I was told to measure the resistance between the hot and cold pin of the XLR connector in the two different modes.
The results where as follows (within the 2k range):
1200 -> .058 Ohm
300 -> .018 Ohm
Do you guys have an advice where to start looking for errors and how to do it?
Thank you very much and again thanks for having me in this great forum!
Cheers
Flo