MAXON OOD9 at 18V?

[Cam_D]

Has any one ever done this? I am curious to see if it would make a difference but i don't want to fry my my over drive.

[stinkfoot]

In general, you should never go to 18 volts unless you know (preferably from the manufacturer) that it's ok to do so. Many pedals have capacitors rated to 16 volts, which won't like going higher.

Also, some of the Maxons use a charge pump circuit - either to provide internal 18 volt operation (these will have a switch in the battery compartment to set the internal voltage) or to produce a steady 9 volts even as the battery is going out. The OSD-9 is an example of the latter, and while the specs for the OOD-9 don't say that it too has a charge pump, they do say that it is based on the OSD-9. So

If it has a charge pump circuit (of either kind), giving it 18 volts won't change anything - the circuit will still only see 9 volts (or 18 volts, if it's the voltage doubler kind, set to double the voltage). So it'd sound the same, unless of course the extra voltage blows the charge pump circuit. If the OOD-9 doesn't have a charge pump, it could work fine with 18 volts. But I'd ask Maxon about it before trying.

[Whalestone]

I agree with Stinkfoot and just want to add that according to the manual, the OOD9 uses a stabilized DC to DC voltage converter to bump up to 9V.
Hence, there seems to be no very good reason to try 18V.

[stinkfoot]

Ah, it's mentioned in the manual... I looked at the specs at maxonfx.com, and it didn't say. Good to know.