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 ARCHIVED TOPIC: Any ever had a Fishman pickup with background static?


Please note this is an archived topic, so it is locked and unable to be replied to. You may, however, start a new topic and refer to this topic with a link: http://www.banjohangout.org/archive/375220

lfbenitez - Posted - 05/23/2021:  19:16:27


Hi all,



I've been using a Fishman Pickup for over 5 years and have had no issues with it. Over the weekend, I started getting background static in my home studio setup. NOTHING has changed on my end. I'm going through a MOTU M2 audio interface into my Mac. 



1) I've swapped out the pickup's battery for a new on



2) I've swapped out the instrument cable (although the prior one has been working fine until this weekend)



3) Moved my instrument cable from "IN 2" to "IN 1" to verify if the channel was bad. I have been using an XLR vocal mic on IN 1. The background static was still present on the instrument in IN 1 as it was in IN 2 and the XLR Mic was just fine in both IN 1 and IN 2.



I'm at a loss. Has my Fishman pickup "suddenly gone bad"? Seems odd.

OM45GE - Posted - 05/24/2021:  03:03:44


Have you recently installed LED lights in your studio?

lfbenitez - Posted - 05/24/2021:  11:14:33


No, nothing has changed in regard to lighting.

Clutch Cargo - Posted - 05/24/2021:  12:04:09


Is it sensitive to moving the wire? With repeated movement you could be seeing an intermittent connection problem in the shield of the wiring or a solder joint. Or the cable between the pickup and preamp, those do go bad pretty often. I'd try another (known good) cable first.

OM45GE - Posted - 05/24/2021:  17:18:48


I should have asked about compact fluorescents as well, but if you haven’t changed lighting than it’s not those either. Both cause noise problems in our home studio. We solved them by removing dimmer switches.

lfbenitez - Posted - 05/24/2021:  19:46:35


quote:

Originally posted by Clutch Cargo

Is it sensitive to moving the wire? With repeated movement you could be seeing an intermittent connection problem in the shield of the wiring or a solder joint. Or the cable between the pickup and preamp, those do go bad pretty often. I'd try another (known good) cable first.






Thanks for the wire question. I actually checked that after I swapped out the battery for a new one. I had wondered if a loose solder was the culprit, but wiggling wires did not produce any unwanted audio. And I did swap out my cable, that was one of the first things I did with no improvement. :-( 

Clutch Cargo - Posted - 05/24/2021:  20:06:29


Piezo pickups are very high impedance, like an antenna, which makes them susceptible to noise.

Bill has been suggesting this with the lighting questions. There are all kinds of devices that can cause electrical noise (mobile phones, cordless landline phones, certain motor types, dimmers, etc). Some noise gets in like a radio transmission, but it can also come in through the AC power lines. It can be tricky to locate the source and eliminate.

You could try moving your rig to another location to see if anything changes, and if the Mac is a laptop, try running off battery to rule out the AC line as a source. Sorry there's not an easy answer.

OM45GE - Posted - 05/25/2021:  03:53:41


We were having problems with ribbon microphones. We had both LED and mini fluorescent lights, some of which were on dimmers. All of those emit radio frequency waves. In combination they created static on the mics that added noise but also stopped them from recording the instruments. It took us a while to figure that one out.



We also have tuber amplifiers that pick up 60 cycle hum from the house circuits. That’s proving tougher to solve. It seems to be exacerbated by the lighting as well. A little volume helps cover it up. laugh

Clutch Cargo - Posted - 05/25/2021:  09:25:34


quote:

Originally posted by OM45GE

We also have tuber amplifiers that pick up 60 cycle hum from the house circuits. That’s proving tougher to solve. It seems to be exacerbated by the lighting as well. A little volume helps cover it up. laugh






Do those amps make your spuds louder? Sorry, couldn't resist. laugh



 

OM45GE - Posted - 05/25/2021:  17:37:19


Dang auto correct!

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