- Joined
- Nov 3, 2004
- Messages
- 353
I'm not sure what could be causing that noise pattern in the stereo rip.
I had an old cassette deck that would have a signal up to 20khz or so, then no signal from 20-30khz, and then have a weird noise pattern above 30khz. It wasn't audible but it was definitely adding it's own 'magic' to the transfers.
That hum could be caused by another device.
I recently purchased a cheap bluetooth receiver to plug into my 20+ year old stereo receiver.
It's powered by USB - micro B plug and is connected to the same power strip as the receiver.
After connecting that bluetooth receiver, my speakers exhibited a hum when listening to music.
It didn't matter if it was playing from the bluetooth device itself or from another device input (CD, line-input) while the bluetooth device was powered off.
The only way to remove the hum is to unplug it altogether. I did have a ground-loop isolatorattached to it which minimized the hum a bit...but it's still there.
Another possibility is the phono preamp. I notice my old transfers with a cheap $50 preamp exhibit more background noise and hum at a low level.
The newer preamp I use (Lehmann Black Cube SE II) has a dedicated power filter / supply and was actually able to completely neutralize the hum from the bluetooth receiver before I realized what that was doing to other inputs. I now unplug that bluetooth device when transferring records.
I had an old cassette deck that would have a signal up to 20khz or so, then no signal from 20-30khz, and then have a weird noise pattern above 30khz. It wasn't audible but it was definitely adding it's own 'magic' to the transfers.
That hum could be caused by another device.
I recently purchased a cheap bluetooth receiver to plug into my 20+ year old stereo receiver.
It's powered by USB - micro B plug and is connected to the same power strip as the receiver.
After connecting that bluetooth receiver, my speakers exhibited a hum when listening to music.
It didn't matter if it was playing from the bluetooth device itself or from another device input (CD, line-input) while the bluetooth device was powered off.
The only way to remove the hum is to unplug it altogether. I did have a ground-loop isolatorattached to it which minimized the hum a bit...but it's still there.
Another possibility is the phono preamp. I notice my old transfers with a cheap $50 preamp exhibit more background noise and hum at a low level.
The newer preamp I use (Lehmann Black Cube SE II) has a dedicated power filter / supply and was actually able to completely neutralize the hum from the bluetooth receiver before I realized what that was doing to other inputs. I now unplug that bluetooth device when transferring records.