Wall Wart Replacement?
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Wall Wart Replacement?
Anyone have personal experience or knowledge of this? I'm wondering if replacing wall warts on gear (RNC, Alesis, a few others) with PowerOne supplies is worth doing. I'm coming from the idea that wall warts sometimes send hash back down the power lines, they suck up space on power strips, and they 'might' be underpowering the gear.
Larry Crane, Editor/Founder Tape Op Magazine
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www.larry-crane.com
- soundguy
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it depends on what the wall wart is doing, they arent all created equal. If the wall wart is supplying AC, a power one supply with give you DC, so that wont work. Wallwarts arent all bad, I have a commercial product coming out sooner or later and am planning on using an external wall wart transformer to supply AC to an internal power supply, REALLY helpful with dealing with the audio transformers inside the chasis, keeps the cost down on building an external power supply with a seperate chasis, etc. On most of the stuff in my studio I have been using AC wall warts just to get the noisy power transformer out of the chasis, but keep the power supply inside the box. Technically, this might suck, I dont know, but the boxes I build like that are quieter than ones where I have to battle with internal power transformers which are always a ripe pain in my experience.
I dont think however there is a universal answer, you'd have to take that one on a circuit to circuit basis.
dave
I dont think however there is a universal answer, you'd have to take that one on a circuit to circuit basis.
dave
http://www.glideonfade.com
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one hundred percent discrete transistor recording with style and care.
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Need more specifics in order to answer this question.
- what is the wallwart spitting out, AC or DC? If AC, then it's simply a step down power transformer, externally packaged, to give the units internal DC supply the AC voltage it needs i.e. 24VAC or whatever. No need to replace this.
- If DC is it a cheap, off the shelf, switching supply from Asia? (most likely) or is it a skillfully designed linear or switching supply purpose built for the unit? (I doubt it). If the former then I would say yes, replacing it with a nice big linear DC supply such as Power One is not a bad idea. Power ones aren't the greatest but most certainly should perform better than the cheap wallwart switcher. The "hash" and "under power" you speak of, Larry, are characteristic of the cheap wallwart switcher combined with poor design choices.
- what is the wallwart spitting out, AC or DC? If AC, then it's simply a step down power transformer, externally packaged, to give the units internal DC supply the AC voltage it needs i.e. 24VAC or whatever. No need to replace this.
- If DC is it a cheap, off the shelf, switching supply from Asia? (most likely) or is it a skillfully designed linear or switching supply purpose built for the unit? (I doubt it). If the former then I would say yes, replacing it with a nice big linear DC supply such as Power One is not a bad idea. Power ones aren't the greatest but most certainly should perform better than the cheap wallwart switcher. The "hash" and "under power" you speak of, Larry, are characteristic of the cheap wallwart switcher combined with poor design choices.
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