Query re sauvignon linestage
I have had a sauvignon linestage for 2 years plus. It has always had an annoying hum in the left channel only. I have definitely isolated it to the preamp. It becomes almost non audible when the gain is turned down, but this also results in a loss of dynamics. I had the preamp checked out by a local valve guru and he couldn't find anything wrong. Another interesting thing is that when the remote is used, a higher frequecy humm comes from the left speaker only. I assume this is motor noise from the volume control motor?? The right channel is dead quiet. I have rolled the tubes. Currently using NOS Tung Sol's which IMHO are light years ahead of the EH stock tubes. Only yesterday I tried out a RAL umbilical cord but I think it has made the sound less musical. It is shorter than Mick's cord and the left channel hum is definitely louder. I suspect the hum is power supply related. The RAL cord is shorter than Mick's. I'm almost at the point of giving up with the Suavignon but I haven't heard anything that sounds remotely as good.
Any ideas appreciated.
Thanks Mark.
I have had a sauvignon linestage for 2 years plus. It has always had an annoying hum in the left channel only. I have definitely isolated it to the preamp. It becomes almost non audible when the gain is turned down, but this also results in a loss of dynamics. I had the preamp checked out by a local valve guru and he couldn't find anything wrong. Another interesting thing is that when the remote is used, a higher frequecy humm comes from the left speaker only. I assume this is motor noise from the volume control motor?? The right channel is dead quiet. I have rolled the tubes. Currently using NOS Tung Sol's which IMHO are light years ahead of the EH stock tubes. Only yesterday I tried out a RAL umbilical cord but I think it has made the sound less musical. It is shorter than Mick's cord and the left channel hum is definitely louder. I suspect the hum is power supply related. The RAL cord is shorter than Mick's. I'm almost at the point of giving up with the Suavignon but I haven't heard anything that sounds remotely as good.
Any ideas appreciated.
Thanks Mark.