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Roland TD-30, TD-20 Modules Voltage/Frequency support?

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  • Roland TD-30, TD-20 Modules Voltage/Frequency support?

    Very important for touring. User manual isn't clear.

    In particular from the owners manual, the following excerpts:

    http://i.imgur.com/T6iWB2G.png


    There is a long list of comma separated voltage specs. But the way it is written kind of implies multiple models (otherwise why not just write 100-240 VAC, 50/60Hz?). Perhaps the supply auto-senses but only supports those specific voltage/frequency combinations. It also warns to only plug into voltage as listed on the sticker on the bottom of the unit.

    To further complicate things, if you look at the bottom stickers on the units they list a specific voltage but both 50/60Hz frequencies. If the units support multiple voltages, why would only one be listed on the bottom?
    http://i.imgur.com/0XlvNMZ.jpg



    Very paranoid about plugging these into anything besides 230 VAC. Hopefully they really are universal power supplies and this is just a user-experience issue.

    Someone must know, but googling hasn't gotten me anything concrete. I found one forum post from canada where a Roland person says they are universal but doesn't elaborate much. Searching the user manual for " AC " or "voltage" doesn't turn up any clarification on the power supply. Better safe than sorry.

    Thanks!
    Last edited by Alan VEX; 04-19-16, 04:26 PM.

  • #2
    Best would be to contact Roland to stop speculations. Best, Michael
    td-30 user ;-)

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    • #3

      In particular from the owners manual, the following excerpts:

      ... is a long list of comma separated voltage specs. ... It also warns to only plug into voltage as listed on the sticker on the bottom of the unit.

      To further complicate things, if you look at the bottom stickers on the units they list a specific voltage but both 50/60Hz frequencies. If the units support multiple voltages, why would only one be listed on the bottom?
      The user manual is indicating there are multiple shipping configurations of the module so they work in the countries they are being sold in. As you clearly have read — plug into voltage as listed on the actual unit. Not complicated at all.

      As far a frequency — 50/60Hz — not mattering, the power supply circuit in these units — probably goes for most low voltage electronics — converts the AC waveform via a bridge rectifier & some filter capacitors to a noisy DC signal. Further filtering and voltage regulation devices produce the low voltage DC required to operate all the actual components. Typically some surge suppression is built in as well (but adding an external surge suppressor is cheap insurance).

      Small variations in the input voltage (maybe as much as 10% — I said maybe!) will have no effect on operations the voltage input is plenty high and the power supply circuit will still be able to get the DC level needed. However, attempting to plug into a circuit that is not the within the nominal voltage rating is looking for trouble.

      The wall plugs are specific (at least in the USA) for voltage and current draw, so plugging into the wrong source is pretty hard to do. You should be able to purchase voltage adapters that will allow you to plug into whatever you run in to. We just picked up a European adapter for our upcoming trip.

      Check out this info

      https://www.rei.com/learn/expert-adv...ity-guide.html

      So what is the rest of the band going to do???
      Last edited by hank; 04-19-16, 04:10 PM.
      TD-20X & TMC-6
      Hart Pro Snare TE3.2, 2 @ KT-10, 5 @ PDX-100, 2 @ CY-15, 2 @ CY-14, 4 @ CY-12, VH-12, 4 @ BT-1, TD-20X VEX packs
      DW9500TB HH, MDS-12X rack hardware & mounts with longer tubes and added bracing.

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