Hey y'all,
Hoping some audiophile good samaritan can help me make sense of this, without having to spend ALL the $ and time on every troubleshooting step. I'm getting a hum. When I turn the volume up, it gets louder and bassier. When I turn the volume all the way down or unplug the turntable at the mixer, it goes away.
I built this setup over time and now in SF, so it's recently transplanted to a less helpful space:
Turntable = Denon DP-300F, replaced cartridge with Grado Prestige Blue
Preamp = Cambridge CP1... I do NOT have the turntable grounded to this, but I don't think that's the issue for reasons below.
These 2 items are plugged into a single 2-prong extension into an outlet on one side of the room.
From the Cambridge, I run about 20' good quality RCA to the stereo setup on THE OTHER SIDE of the room. If I unplug the RCA from the pre-amp, the hum gets way louder, but if I unplug the RCA from the mixer/receiver/speakers, the hum goes away. Perhaps it's cable interference/bad cable, but it's a pretty new cable, a pain in the ass where I ran it, and I wasn't having this problem before.
On the far side of the room:
Rolls Mini-Mix - this is kind of weak, but I couldn't think of a better way to easily have Alexa/Echo, TV, and turntable all on at all times.
Runs to Kanto Yumi speakers. If I cut out the Rolls, and just run the long RCA straight to speakers, still get hum.
This side (with TV, Mixer, Echo Dot, Yumi speakers) may have sketchy electronics in general, cuz old building, but that's just a theory.
Anyway, any ideas? Thanks in advance!!!
Thanks,
Alex
Hoping some audiophile good samaritan can help me make sense of this, without having to spend ALL the $ and time on every troubleshooting step. I'm getting a hum. When I turn the volume up, it gets louder and bassier. When I turn the volume all the way down or unplug the turntable at the mixer, it goes away.
I built this setup over time and now in SF, so it's recently transplanted to a less helpful space:
Turntable = Denon DP-300F, replaced cartridge with Grado Prestige Blue
Preamp = Cambridge CP1... I do NOT have the turntable grounded to this, but I don't think that's the issue for reasons below.
These 2 items are plugged into a single 2-prong extension into an outlet on one side of the room.
From the Cambridge, I run about 20' good quality RCA to the stereo setup on THE OTHER SIDE of the room. If I unplug the RCA from the pre-amp, the hum gets way louder, but if I unplug the RCA from the mixer/receiver/speakers, the hum goes away. Perhaps it's cable interference/bad cable, but it's a pretty new cable, a pain in the ass where I ran it, and I wasn't having this problem before.
On the far side of the room:
Rolls Mini-Mix - this is kind of weak, but I couldn't think of a better way to easily have Alexa/Echo, TV, and turntable all on at all times.
Runs to Kanto Yumi speakers. If I cut out the Rolls, and just run the long RCA straight to speakers, still get hum.
This side (with TV, Mixer, Echo Dot, Yumi speakers) may have sketchy electronics in general, cuz old building, but that's just a theory.
Anyway, any ideas? Thanks in advance!!!
Thanks,
Alex