I am building a pedalboard which has both a Radial JDV and a Radial X-Amp, each of which runs off its own 110V US power adapter.
The rating on each adapter is as follows:
JDV: input 120V AC 60Hz (no wattage listed); output 21V DC 500ma
X-Amp: input 120V AC 60Hz 12W; output 15V DC 400ma
I am trying to minimise the weight of the board as it's heavy enough already, and I was wondering if it is safe to run both adapters off the same 100W step down transformer (I'm in Ireland so I'm using 220V power) or should I have a separate transformer for each unit?
I'm using one of these step down transformers: http://cgi.ebay.co.uk/ws/eBayISAPI.d...m=270180191369
Is it as simple as adding up the wattage of each adapter and making sure it is within the rating of the transformer? In which case, the X-amp is rated at 12 watts, and though the JDV's adapter doesn't specify its wattage it could hardly be more than 80 watts, right?
any advice gratefully appreciated :)