Hehe So Ive put together an aleph 5 using the Recent BrianGT mini aleph boards. I dont even know if I should ask for help as I have probaly made a stupid mistake.
Anyway. I now have a single mono amp that when connected unbalenced gives a terrible distorted but amplified signal at its outputs. I have measured voltages and they seem to be very close to the a5 schematic apart from........ The 0.5v across -V and -s which is non existant!
If there isnt an obvious bunder I am going to stuff another board and double check things. then try with that board. Any advice in the mean time would be much appreciated.
regards
dave
Anyway. I now have a single mono amp that when connected unbalenced gives a terrible distorted but amplified signal at its outputs. I have measured voltages and they seem to be very close to the a5 schematic apart from........ The 0.5v across -V and -s which is non existant!
If there isnt an obvious bunder I am going to stuff another board and double check things. then try with that board. Any advice in the mean time would be much appreciated.
regards
dave
I have checked there and the polarity is correct. Perhaps I have blown the ztx450 I used on Q5 ?.....
Q5 is what I was refering to. Check R19, 221K. If this is lower you will get less current. If it is taken out you should get a .7 volt drop across your source resistors.😀
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