I don't know.
Without buffer the amp see the impedance of two resistors and cap.
If I'll use the buffer, i'll put it between volt divider and cap.
I 'm not an expert one like you Nick.
In my Borbely preamp I checked with and without buffer and the differences was evident.
More control and dinamic with buffer,but before the splitter there is a k170/j74 buffer, not 3 mosfets in TO220 like in DCG3!
Without buffer the amp see the impedance of two resistors and cap.
If I'll use the buffer, i'll put it between volt divider and cap.
I 'm not an expert one like you Nick.
In my Borbely preamp I checked with and without buffer and the differences was evident.
More control and dinamic with buffer,but before the splitter there is a k170/j74 buffer, not 3 mosfets in TO220 like in DCG3!
bearings?
I have a practical build question.
If you use an extension to bring something like a selector or attenuator that is back in the box to the front face plate, what kind of bearing do you use to bring it through the face plate so the knob can be put on it.
Thanks,
Don
I have a practical build question.
If you use an extension to bring something like a selector or attenuator that is back in the box to the front face plate, what kind of bearing do you use to bring it through the face plate so the knob can be put on it.
Thanks,
Don
Hi Don,
I use a simple metal sleeve cut from a piece of 1/4in ID threaded brass pipe. You could also buy something similar on Ebay; look for attenuator/potentiometer shaft extension. This is if you have a sheet metal front plate. If the front plate is thick metal or wood I think a simple hole will suffice. You can of course get carried away and choose to install a roller bearing; look for skate bearings they are small.
nash
I use a simple metal sleeve cut from a piece of 1/4in ID threaded brass pipe. You could also buy something similar on Ebay; look for attenuator/potentiometer shaft extension. This is if you have a sheet metal front plate. If the front plate is thick metal or wood I think a simple hole will suffice. You can of course get carried away and choose to install a roller bearing; look for skate bearings they are small.
nash
One of the cheapest out there
Aluminum 300mm Volume Potentiometer Extension Shaft Audio Connecting Long Rod | eBay
Aluminum 300mm Volume Potentiometer Extension Shaft Audio Connecting Long Rod | eBay
Try something. Disconnect the CL60 from the PE but keep the green/yellow wire connected on its other end. Do the input signal wiring conventionally through the volume pot. Attach the CL60's free end on the volume pot's mounting hardware somewhere conductive. Does something change for hum?
By the way, the UBiB mounting points are isolated islands from its PCB's ground plane. No continuity there.
By the way, the UBiB mounting points are isolated islands from its PCB's ground plane. No continuity there.
Sorry, I didnt answer the other question.
The each ground zero of +/- UBiB pair is connected to the PWR GND of the DCG3 channel.
I connected the left channel HP GND to the pot GND and then the right channel HP GND to a CL60 (yellow green cable) and terminating at the chassis GND.
The each ground zero of +/- UBiB pair is connected to the PWR GND of the DCG3 channel.
I connected the left channel HP GND to the pot GND and then the right channel HP GND to a CL60 (yellow green cable) and terminating at the chassis GND.
- Home
- Source & Line
- Analog Line Level
- Salas DCG3 preamp (line & headphone)