Hi,

I have a working Line 6 Spider III 150 Watt amp which runs by wall current, 120 VAC.  I need to convert it to battery powered so that I can play outside.  My landlord says I can only play my electric guitar with headphones now.  I hate this new rule, but have to adapt.

I prefer not to convert from DC up to AC back to DC.  It's wasteful and I'd get very little time from a car battery.

I've unbolted the control part from the speaker cabinet.  The power supply (labeled On-Tech LX-8665-02H0) has the 110VAC going in, and eight wires coming out:

(2) black wires
(3) red wires
(2) blue wires
(1) yellow wire

My next step is to take a DVM to the different wires, see what they are putting out (I assume they are all DC but might be wrong here) then figure out a way to get a battery to supply me these different voltages.

Any input would be most appreciated.  Thanks, john
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