High current draw on maxamp20? |
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Sweex
New Member Joined: 10 May 2016 Status: Offline Points: 5 |
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Posted: 10 May 2016 at 7:22pm |
Hi!
I recently built a boominator with a Maxamp20 but im a bit confused with the power draw. I haven't had the time to just test it to se how long i actualy plays for, but when im messuring with my multi-meter i get an idle current of 210mA and it stays like that for som 20% of the volume knob. When i turn it upp i've seen draws of 2A with just the amp running, no leds or bluetooth or anything. Is this normal for this amp? I was under the impression that i drew far less, from what saturnus and other have said. I filmed it and uploaded it on youtube; https://www.youtube.com/watch?v=BZgzVsBCjPQ I forgot to turn of the leds as you see in the beginning but i did turn them of halfway through as you can see. Best regards Sweex
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Saturnus
Old Croc Joined: 13 July 2010 Location: Copenhagen Status: Offline Points: 2025 |
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I don't see anything unusual. What you're seeing is the instantaneous current draw. You'll need an RMS measurement to the average current draw.
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Sweex
New Member Joined: 10 May 2016 Status: Offline Points: 5 |
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Hi! I do somewhat understad the 2A draw in peaks, but isn't the idle/lowest volume draw a bit high att ~200mA?
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DJ-Dulux
Registered User Joined: 24 August 2009 Location: Kenilworth, UK Status: Offline Points: 379 |
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I ran one of mine off a DC power supply (10A) and got ~200mA draw, so don't think anything wrong here. When using cheap PSU amp meter I observed 5A+ peaks and the PSU got a little upset.
I now have a shunt and RMS meter to re-do the tests, but have not get got around to it yet (I want to see what the minidsp + 2 maxamps draws). Will see if I can do it in the next week, I have 3 Maxamps so should be able to see if all the same, obviously playing the same piece of music. Dupe....
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Dupe...
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Sweex
New Member Joined: 10 May 2016 Status: Offline Points: 5 |
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oh okej, great! Then im happy! Got a faulty maxamp20 and the sent me a new one so I just wanted to make sure. Oh okej, im interested in the results so please come back here next week and update!
cheers |
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