Radio Listeners Club Indonesia member Lien Jin in Jakarta confirms that Voice of Indonesia is transmitting from Palangkaraya with 50 kW and 4750 is from Cimanggis with 10 kW. The 4750 transmitter was moved from Makassar to Cimanggis. This info comes from VOI technical manager Syafrudin who has invited Lien Jin to visit the Cimanggis transmitter.
The 50 kW output at Palangkaraya must be nominal as it certainly doesn't sound like it! (via David Foster via WOR io group)