current draw of RRR



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Re: current draw of RRR

Postby pewtershmit » Fri Jul 20, 2012 10:47 pm

Ryan wrote:That's cool to hear guys, thanks for chiming in about the daisy chaining/One Spoting, glad to hear it. A One Spot is my daily driver adapter around here, I use one all the time and really like it. I'm trying to get Visual Sound to cut me a deal on them so I can provide them cheaply for people who have power supply problems with my pedals, cause that does come up.

Danny, that's really interesting to hear... I wonder if you're PP2 isn't putting out the juice it should, or if the other pedals are hogging it too much and pulling it down, or if the RRR uses more current than I think... or all 3. *scary music*

Glad to hear that worked for you though, I'd been thinking about your situation. And hey, while you're here, how's L&M treating you?


maybe I'll run a multimeter on the taps and see how much its putting out. I am running two pedals on my "high current" taps that are supposedly rated for more than the provided 250ma they put out. My el capistan and the new whammy, both supposedly pull 265 or something.

L&M has been great, I've been uber busy and am a day away from a much needed two week vac ay.
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Re: current draw of RRR

Postby Ryan » Tue Jul 24, 2012 3:21 pm

Right on, Danny, hope you have fun on your holiday and that's great to hear that the L&M change has gone well!
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Re: current draw of RRR

Postby the Life Aquatic » Fri Aug 24, 2012 2:52 pm

i bought a fuel tank jr earlier this week, and when i plugged my RRR into its own spot i got a loud humming when the pedal was engaged. tried it on a daisy chain and got the same thing. ended up powering the RRR on its own with just the one spot. any ideas why im getting the humming?
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Re: current draw of RRR

Postby Ryan » Fri Aug 24, 2012 7:04 pm

Absolutely, it's all of the stuff we've talked about it in here.

The Fuel Tank is notoriously noisy, very low current output, and isn't actually isolated, just a bunch of regulators. Did you unplug everything else that was plugged into the Fuel Tank at the time? On a power supply like that it's really easy for pedals to interfere with each other. In the RRR manual I say the pedal needs 50mA but it's a mistake it needs over 80 at 9VDC, making it really close the Fuel Tank's rated output, especially if anything else is being powered.

Same thing as always with daisy chaining, that's the whole issue with it. Digital pedals and pedals with timing signals and pedals that need a lot of current can't usually be daisy chained without hum... you hear reports of it working like in here, but believe me, I hear way way more reports of it not working.
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Re: current draw of RRR

Postby the Life Aquatic » Fri Aug 24, 2012 7:27 pm

wish i had done a little more research on fuel tank jr :/ now. its fine on the one spot so im going to leave it there for the time being. im at my parents house till i think tomorrow at the earliest so ill figure out eveyrthing. unexpectdly bought a few pedals since getting the fuel tank so ill still need the one spot. will post when i figure it out.
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Re: current draw of RRR

Postby Ryan » Fri Aug 24, 2012 8:24 pm

Right on, Patrick, keep me posted! I'd start by unplugging everything from the Fuel Tank except the RRR and see if it's noisy, try all the outputs. If it's noisy with the Fuel Tank regardless then it's possible you have a noisy fuel tank or it's possible you have a noisy ground line where you are and the FT isn't very well filtered.

If it's quiet, start adding in other pedals and see if the addition of a certain one makes for hum.

Nothing will ever be as quiet or isolated as one pedal, one plug into the wall. That's the ultimate isolated pedal board, a power bar with a bunch of individual wall wart supplies.
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Re: current draw of RRR

Postby the Life Aquatic » Fri Aug 24, 2012 9:01 pm

So it could possibly be anything else on the surge protector? I have my iPhone or iPad charging off the same strip sometimes. Should check that. Can't remember if they were plugged in when I noticed it
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Re: current draw of RRR

Postby Ryan » Sun Aug 26, 2012 9:31 pm

That's a worthy experiment for sure! I personally wouldn't have any computer or mobile or wireless device being powered with my music gear, I'd separate it as much as I could. That's a good opportunity for some weird noise right there. (you ever play guitar with your iPhone in your pocket, behind your guitar?)
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Re: current draw of RRR

Postby jskadiang » Mon Aug 27, 2012 1:03 am

Ryan wrote:(you ever play guitar with your iPhone in your pocket, behind your guitar?)


I do this on a regular basis, but have never had aliens start communicating out of my amp or anything like that. :cry: What happens when you do that?
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Re: current draw of RRR

Postby Ryan » Mon Aug 27, 2012 11:05 pm

iPhones put out a crazy amount of noise.. it comes through pickups easily, crazy beeps and bloops, randomly but frequently. It does it through my Mackie speakers too if it's within ~3" of one of them.
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