Did you check with George Kaye?
If not there then see below.
Eric
http://www.yamahapkowner.com/forum/index.php?topic=27107.0

[This message has been edited by Eric, B (edited 10-04-2010).]
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Genos, PSR-S970, TC Helicon VoiceLive3, Mackie 802-VLZ3 Mixer, 2 Bose L1 Pro16, Electro-Voice ZXA1 Subwoofer