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What is the maximum amperage on the 15 volt side for the Pro-ject Power Box ds2 Sources

I have been trying to get this question answered for some time now. Before anyone goes there, Yes, I have tried asking Pro-ject but they dont seem to know. Strange I know but that is the deal. The root of my inquiry is that my turntable requires 15 v DC/1.6 A. The ds2 Power Box Sources lists 15v DC only, it does not give a listing for the amperage. I am attempting to power both my turntable and phono pre amp with the same power supply but I have not done so because of not knowing what the maximum amperage is for the Power Box. I am reluctnat to power the turntable in the absence of the proper amperage so I have just been using the wall wart for the turntable.
darrell21256
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oldhvymec
5,101 posts
 
Right off the spec sheet, it consumes 490 mA. 18v not 15, all the information is there.

Outboard power supply: 18 V/1000 mA DC Power consumption: 490mA DC


What you want to do with it, combine the two? .5 amp? close? and the 1.6. 2.1 max amps @ 15-18v 

Measure it....now you can figure a 150% duty cycle and clean it up.
Switching PS or something. Something clean...

Regards...
imhififan's avatar
imhififan
2,217 posts
 
I believe pro-ject not specs the current rating is the inrush current during the start of a motor is significantly higher than the motor running current and the power supply will have to be able to withstand that inrush current. Therefore Pro-Ject recommend using Power Box RS UNI TT (15V/2A) for turntables with high power consumption and a heavy, mass loaded, platter.

https://www.henleyaudio.co.uk/products/Box-Design-Power-Box-RS-Uni-TT

lewm
13,339 posts
 
Millercarbon, What the heck are you talking about?  Who wants to get 100A out of a wallwart?  Furthermore, not all wallwarts are simple transformers; some contain rectified power supplies and can directly deliver DC voltage; I suspect that is the type we are talking about, unless I too have misunderstood the OP.


Thanks to oldhvymec, we now know that the OP is off base a bit, as he needs 18VDC (and ~0.5A) into the TT, not 15V, just to begin with.  And any transformer, whether its part of an AC or a rectified DC supply, will get warmer than normal, even hot, if it's overtaxed.  But one can't ask a 15VDC supply to deliver 18VDC.
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