In the eighties, Boss marketed a series of half-width 19" rack mount effects, the RBF-10, RCE-10, RCL-10, RDD-10, RGE-10, ROD-10, RPH-10, RPQ-10 and RSD-10. Because they don't have a voltage regulator inside, those units are not to be used with an ordinary wall wart. Boss expect you to use their special PSU instead, which I believe to be nothing more than an ordinary wall wart with a voltage regulator.
Adding a 9 V voltage regulator to a wall wart is not difficult. Here is what I used :
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| WARNING — This document describes potentially dangerous operations that could destroy gear or kill people. Remember, I could be wrong, or lying. Understanding the risks and taking the necessary measures to protect against them is your responsibility. |
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The first step was to attach the heat sink to the cover. I had a TO-3 heat sink with four holes so I threaded tapping screws through three of the holes and into the cover. I took great care to avoid any possibility of electrical contact between the heat sink and anything inside the wall wart. A screw touching a live wire could prove fatal to the gear and the people around it.
Removed the voltage and polarity selection switches. Instead ran wires straight from the PCB to the 7809. Picked the lowest voltage available that was at least 2 V above 9 V (in this case, 12 V).
This wall wart has been powering an RBF-10, an RCE-10, an RCL-10, an ROD-10, an RPQ-10 and an RSD-10 since around 1991 with no problems. In 2007, the smoothing cap finally dried out and had to be replaced. The replacement was too large to fit in the case, hence the big cream-coloured lump at the base of the cord.
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| WARNING — This document describes potentially dangerous operations that could destroy gear or kill people. Remember, I could be wrong, or lying. Understanding the risks and taking the necessary measures to protect against them is your responsibility. |
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This is http://www.teaser.fr/~amajorel/bosspsu/, last updated AYM 2008-10-25.