Hoffman Amplifiers Tube Amplifier Forum
Other Stuff => Effects => Topic started by: stratavox on December 11, 2016, 02:55:39 pm
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That's about it....can I get dc to my pedals without a 9 volt, or an ac adapter for each? Not running much, but the power strip/brick/etc....
Thanks...
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http://www.guitars-of-love.com/9V_regulated_PS.html (http://www.guitars-of-love.com/9V_regulated_PS.html)
Looks good to me. Cheap parts, build it yourself. Win :)
-Brett
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Thanks Brett, cool page....but what I am trying to find is something similar to a phantom supply that runs thru the mic cable to a condenser mic. I don't want any AC runs to my board....make sense?
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Well you need to have a barrel DC plug for each pedal right? Being the gain stages etc inside guitar pedals, and the construction of guitar cables, you're probably not going to see anyone running power inside a guitar cable I'd imagine. So to me the least cluttered way is to build a power box like the one in the link there, with female DC jacks on the brick, and then build yourself a bunch of male/male power cables. So you can have them all hooked up and attached where you like, then just plug the AC cord for your power brick in and hook up the DC plugs to it. I guess I don't really understand your goal. I have a Boss Noise Gate pedal that daisy chains out DC.. so I can run all my Boss pedals and most other things (Except for gnarly fuzzes) off the daisy chain, and there is no AC anywhere near my pedal board.
-Brett
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... what I am trying to find is something similar to a phantom supply that runs thru the mic cable to a condenser mic. I don't want any AC runs to my board....make sense?
Only if you build the pedals which run on "phantom power". And devise the cabling method from amp-to-board, etc.
The key difference is microphone phantom power doesn't draw any significant current through the cable; the voltage is just a static voltage to charge the capsule. Pedals draw current from the 9vdc supply (and some draw a LOT of current, especially digital pedals).
A.C. to a power supply on the board shouldn't cause any issues, so why are you seeking to eliminate it?
... daisy chains out DC. ...
Daisy-chain power supply arrangement can create problems, depending on the pedals used. You get the least risk of noise if you use a power supply (or system of power components) which isolates each pedal's 9v cable. Again, digital pedals can be the biggest offenders.
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HBP, it's not an issue with AC, just trying to avoid the A/C run from an outlet to the board. Just for the sake of neatness....thanks all for your time and thoughts.
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Daisy-chain power supply arrangement can create problems, depending on the pedals used. You get the least risk of noise if you use a power supply (or system of power components) which isolates each pedal's 9v cable. Again, digital pedals can be the biggest offenders.
Yeah I only run low gain stuff like the Delay (which as you mention is incredibly power-hungry) and my phase-90 off the daisy chain. I also don't recommend running any self oscilating fuzzes off the daisy chain as they introduce noise into pedals upstream even!
The box I linked should work fine, though I might use a slightly beefier transformer personally.
-Brett
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I should note the daisy chain can work, but it's somewhat dependent on the power supply (or lack thereof) inside the pedal, as well as the nature of current draw from the supply to the pedal.
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I also don't recommend running any self oscilating fuzzes off the daisy chain as they introduce noise into pedals upstream even!
Not in my experiences, maybe you have another issue such as an issue with your power supply or badly designed pedal(s)? I just bought a Polytune tuner for a small board set-up and as much as I like the tuner it completely sucks using the power output side and injects a horrible audible low but high pitched noise when not playing. Running my germanium boost pedal (AfterBurner) it picks it up and amplifies it really badly. But even with only opamp based or other transistor types that damn Polytune still exhibits the same issue. I'm working on something to try to correct it but it's too bad that Polytune does this because the tuning part works very well.
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Thanks Brett, cool page....but what I am trying to find is something similar to a phantom supply that runs thru the mic cable to a condenser mic. I don't want any AC runs to my board....make sense?
Your question is quite confusing, you will understand the subject better if you read a bit more on these topics:
"Balanced Microphones inputs"
"Umbalanced instrument signal and connectors"
"Phantom Power Current"
"Neumann U87 current Consumption"
"Digital Delays current Consumption"
If you were asking if the 48V Phamtom Power from the console could power your pedals, the answer is:
No
If you were asking if your guitar amplifier's input could provide a sort of 9V phantom power to power your pedals, the answer is:
No
Like Hot Blue Plates explained, to have a sort of system were the Guitar cord would pass DC to power the pedals then you had to build the complete systems yourself. Different cables, different connectors, modify all your pedals and future pedals and more stuff that I dont even want to think about now because I really cant see the point
Basically it would be just a lot of work and in the end you still would have a 9V PSU anyway at the amplifiers end