ampage
Tube Amps / Music Electronics
For current discussions, please visit Music Electronics Forum.

ampage archive

Vintage threads from the first ten years

Search for:  Mode:  

 

Pedal board HELL

2/25/2000 4:53 PM
aron
Pedal board HELL
OK,  
 
I bought an SKB pedal board with power supply built in (actually it uses a wall wart to deliver power).  
 
My first problem is hum. After trying the Anderton 1000uF/100 ohm resistor filter trick on the adaptor, I now get extreme squealing with my wah and FET preamp. I mean total oscillation. OK, yeah, I will remove the filter and that should fix that problem - but why is this happening? My Shaka 3 is fine - quiet as a mouse.  
 
My 2nd and most serious problem is HUM. I traced it down to the Memory man deluxe (which is a 3 prong thing).  
 
Here is the signal chain:  
 
Buffer->Wah->Shaka 3->Fet Preamp->Volume Pedal->Memory Man  
 
If I disconnect the Memory Man Deluxe from the signal chain - all is OK. (Except for the oscillation - which I guess will go away when I remove the filter from the Adaptor).  
 
Can you give me some suggestions on how to kill this rather loud hum??  
 
Of course I never had this problem when I ran with batteries. Only when I started using the power supply with the SKB.  
 
Even if I unplug the guitar and have no signal going in, the combination of memory man causes hum. As soon as I unplug it from the signal chain, the hum goes away.  
 
Should I try bypassing the ground pin on the memory man? Somehow this doesn't sound right...  
 
Thanks,  
 
Aron

 
Replies:
Gus Aron is the memory man plugged into... -- 2/25/2000 5:12 PM
MKB Hi, Aron. I had a similar problem ... -- 2/25/2000 5:14 PM
John De Luca Hi,I think you have... -- 3/12/2000 11:26 PM