F5 and Aikido are singing together hum free. Time to button up the cosmetics, then pictures. Many thanks to Papa and John Broskie, heroes!!!
Noise with B1
My F5 is silent, but connected to B1 I hear hum...
B1 Off, On, No power cord, I hear noise.
B1 connected to GainClone is super quiet.
What can I do?😕
My F5 is silent, but connected to B1 I hear hum...
B1 Off, On, No power cord, I hear noise.
B1 connected to GainClone is super quiet.
What can I do?😕
Here the images of B1. If I short the input of F5 with any value resistors I hear hum. F5 without input, it is silence.
I do not have the ground in my house, but if I connect the ground, nothing changes.
Attachments
too many long wires
you need twisted pairs also for both rails , not plain cable as now
-have you hum in speakers even in case of connecting just one channel input ?
-have you hum even with xformer out of case , as on picture ?
you need twisted pairs also for both rails , not plain cable as now
-have you hum in speakers even in case of connecting just one channel input ?
-have you hum even with xformer out of case , as on picture ?
f5 has a closed ground loop over the input cinch and a ground of the power supply. You have to put the input RCA jack as close one to another and lead them with power ground lead to circuit board.
F5 is not without hum if you make short circuit between ground of the chinch. Connect one interconnect cable between left and right input and you have a hum
F5 is not without hum if you make short circuit between ground of the chinch. Connect one interconnect cable between left and right input and you have a hum
Put the signal cable like yellow line on picture https://www.dropbox.com/s/z29ggltseggyx59/DSCF0749r.jpg
-have you hum even with xformer out of case , as on picture ?
NO!
I have hum only with xformer in the case!!! 😕
tnx for pointing obvious , at last ...... 
put xformer out of case , and connect it to amp case with umbilical
cap bank in amp case
EI xformer is having greater magnetic field than toroid one ......... and minimized amp case , as is yours , isn't overly helpful ......
put xformer out of case , and connect it to amp case with umbilical
cap bank in amp case
EI xformer is having greater magnetic field than toroid one ......... and minimized amp case , as is yours , isn't overly helpful ......
Snubber capacitor input for F5 forum psu board ?
Hi
Anyone who can do the Math for the input snubbers for the F5 PSU forum board for us.??
We are two guys right in the middle of the welding process for F5 . 🙂
630VA 2X18V +8 x 22000uF Mundorf.
Anyone ?
Best Regards!
Hi
Anyone who can do the Math for the input snubbers for the F5 PSU forum board for us.??
We are two guys right in the middle of the welding process for F5 . 🙂
630VA 2X18V +8 x 22000uF Mundorf.
Anyone ?
Best Regards!
tnx for pointing obvious , at last ......
put xformer out of case , and connect it to amp case with umbilical
cap bank in amp case
EI xformer is having greater magnetic field than toroid one ......... and minimized amp case , as is yours , isn't overly helpful ......
I thought I had finished the job.
Ok, I'll take a hammer and screwdriver.
The sound is good but I think that the high frequencies are attenuated a little for me.
It 'ok 0.6 volts across R11 R12 for 4 ohm speakers?
Tnx
you can up Iq to point where you meet 35-40W dissipation per device or 55C at heatsink
whichever comes first
I think I damaged a channel. During the setting, adjusting p1 and p2, beyond a certain level can not achieve 0 volts offset output, and offset increases rapidly.
The other channel is ok.