Advertisement
Our Recommended Power Supply
The safest available option is to use a ready made 'wallwart' or 'line lump' supply. As already
mentioned one can use any 15V or 18V AC output wallwart of linelump you can source. The
current capability of the mains adapter will be the chief limiting factor in determining the
maximum current draw of your PSU. For a variety of reasons I recommend the Yamaha PA-
20 and PA-30 supplies.
Yamaha PA-20
The European version of the PA-20. Other country's units are similar but will have the local mains
connector fitted.
This is a linelump supply and features a fixed 17.5-0-17.5 volt AC output at 0.94A maximum.
This means it gives us two AC outputs with a centre tap or mid point reference voltage. So
unlike the single phase AC adapter output with two leads, this one has three. This means you
need to use the Oakley PSU in full wave rectification mode.
The PA-20 is made for Yamaha products and they are available from Yamaha spares
departments as well as many music shops, eg. Thomann. These are CE approved and connect
to the mains via your local mains connector. They will be different types depending on the
country you need them for. It comes with a handy three way plug at the low voltage end that
you can use with an appropriate socket. If you wish you can ditch their connector and use
your own. Oakley Sound sell a suitable three way connector to fit the Yamaha one perfectly.
In the UK the line lump's part number is V9812300 and the total cost is around £30 including
VAT and postage.
7
Advertisement
