your own. Maplin in the UK sell a suitable three way connector to fit the Yamaha one
perfectly. Their part number is FM51F.
In the UK the line lump’s part number is V9812300 and the total cost is around £30 including
VAT and postage. We do have permission from Yamaha-Kemble in the UK to use this
particular part for the Oakley system, but in other countries this may be not so clear cut. The
liability issue once again rears its ugly head and they may not want to sell power items for
third party use. If you are buying these direct from Yamaha and, for some reason, are asked
why, the best thing is to say it is for your own MG12/4 mixer.
Once rectified, smoothed and regulated the Yamaha PA-20 can deliver up to 0.52A
continuously into both 15V rails. The current limit resistors on the Oakley PSU, R2 and R3,
should both be 1R resistors.
You should fit both fuses and both should be anti-surge types and rated between 1A and 1.6A.
The European version of the PA-20. Other country's units are similar but will have the local mains
connector fitted.
Yamaha PA-30
This is essentially a bigger version of the PA-20 as detailed above which supplies 18V-0-18V
at 1.4A maximum. Once rectified, smoothed and regulated it can supply up to 0.78A
continuously. Make R2 and R3 both 0R82 to set the current limit to around 0.78A. Again,
you should fit both fuses and both should be anti-surge types and rated between 1.5A and 2A.
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