Bottlehead Forum
Bottlehead Kits => BeePre => Topic started by: oguinn on March 10, 2021, 08:52:17 AM
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I have the BeePre sending its unbalanced output to a Mainline and its balanced output splitting its signal to a Kaiju and a Stereomour II. I have music playing through the BeePre/Kaiju/Stereomour currently, but not the Mainline and decided to move the Mainline across the room. To do so, I unplugged one of the two input cables and when I did so my speakers developed a hum until I plugged it back in.
I'd expect that if I unplugged an input but not an output. Is that typical behavior or is that symptomatic of a problem?
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Can you clarify?
* Neither Kaiju nor Stereomour have balanced inputs, so how are you using the balanced out from the preamp?
* Did you mean you unplugged one channel between BPre and Mainline, or both channels?
(Related: does the Mainline have more than one source connected?)
* which end of the cable was unplugged?
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Sure thing, Paul.
- I have adapters from balanced to RCA.
- I unplugged one channel at the Mainline end. There is another cable connected to the other input (a 3.5mm to RCA cable) but nothing is connected to that.
- The Mainline end was unplugged
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Here's a shot of the RCA cables at the BeePre end if that helps
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I'd expect that if I unplugged an input but not an output. Is that typical behavior or is that symptomatic of a problem?
The unplugged cable becomes a big antenna that can pick up noise and present that at the inputs of your amplifiers.
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Thanks, PB. It's a pretty long run of cable, too, so that tracks.
Mostly wanted to make sure I wasn't operating with some problem that would blow up into a much bigger problem later.