Hornet900
New member
Hello 
I installed the speedball upgrade yesterday amp was working fine for 24h. ( well maybe I didn't notice problem at first ?
Today i went to change tubes and when i started the amp up I had a noise with the volume turned right down, .. when I raise the volume the noise goes away and also the noise goes away after a few mins when the amps warmed up
(noise is only at startup with the volume turned right down for a few mins)
Its the same noise I hear when I pull the headphone jack half way out the headphone socket,/ and seems to be louder in the left channel.
This is with no source plugged into the amp,
Edit:
been investigating a little and the noise can sometimes stop when I touch the headphone cable (only sometimes this will stop it when its warming up a little more.
I had a prod inside and when i Moved the ground wire (long black wire)which connects headphone jack to Term 12L the noise gets louder never quieter. This cable can make it alot worse when moving it. (i reheated these joints but never fixed it)
I've not changed anything and it happens with all my tubes now, amp was perfect before

I installed the speedball upgrade yesterday amp was working fine for 24h. ( well maybe I didn't notice problem at first ?
Today i went to change tubes and when i started the amp up I had a noise with the volume turned right down, .. when I raise the volume the noise goes away and also the noise goes away after a few mins when the amps warmed up
(noise is only at startup with the volume turned right down for a few mins)
Its the same noise I hear when I pull the headphone jack half way out the headphone socket,/ and seems to be louder in the left channel.
This is with no source plugged into the amp,
Edit:
been investigating a little and the noise can sometimes stop when I touch the headphone cable (only sometimes this will stop it when its warming up a little more.
I had a prod inside and when i Moved the ground wire (long black wire)which connects headphone jack to Term 12L the noise gets louder never quieter. This cable can make it alot worse when moving it. (i reheated these joints but never fixed it)
I've not changed anything and it happens with all my tubes now, amp was perfect before