A DSD TECH SH-G01L USB Isolator in an attempt to deal with the RF susceptibility of a Topping DX3 Pro +. My favourite IEM - the Hidizs MP145 - causes it to hum loudly and unstably. It appears this particular 4-wire cable is also a wonderful antenna since balling it up or laying a hand on the Topping suppresses the hum.
Recently got a USB isolator with external power supply for my Topping on the bench. Worked great. It's just a D10s, but it makes videos make noise and calls through the 'puter. Overkill for that job.
In this case worked good rather than great. The hum is much reduced but still present. I'm under 2 km from a 6000 watt AM station that also plays havoc with metal detectors and many portable shortwave radios. Interesting problem. If flipping the wall wart AC polarity doesn't work might try an analogue bench supply.
Try a metal housing, and a temporary shield for the cable which is acting as antenna...aluminum backed tape, wire braid, metal pipe, whatever is handy at home / shop.
Considered it but it's impractical as a permanent fix and won't reveal anything I don't already know. The bench supply thought is primarily as a means of probing the issue's root cause.
My 7Hz Timeless cable appears to be a coax twisted pair and doesn't generate hum. Worst case scenario is I'll be posting in this thread about buying a replacement cable the the Hidizs.
My 7Hz Timeless cable appears to be a coax twisted pair and doesn't generate hum. Worst case scenario is I'll be posting in this thread about buying a replacement cable the the Hidizs.
Thanks to the thoughtless mail courier who ran into my truck. I have purchased yet another death trap.
I got the pcbs the other day and Michael Barton had accidently added yet another pcb, a VC distortion. Quickly mailed him and offered me to pay for the extra pcb, but he declined.
Just have to say the BartonMusicalCircuits has made a very satisfied customer, even more happy!
Nice truck.
Up here, rust is the death sentence to all cars and trucks. It begins on the inside and when you see it, it is all over. Yours has surface rust, nice.
Up here, rust is the death sentence to all cars and trucks. It begins on the inside and when you see it, it is all over. Yours has surface rust, nice.
There are plenty of old pre 1960 farm trucks out here in Oklahoma, some still in service. Last week I was looking at a 1959 F500 grain dump with its original 292 Y-block. It was still in service as a grain hauler.