sorry for the duplicate message... sent before i could finish... where can one find the sharp IR9022? i have found the following as possible subs TL022 (http://focus.ti.com/lit/ds/symlink/tl022.pdf) NJM022D (http://www.njr.co.jp/pdf/ae/ae04007.pdf) has anyone used these? will they work for the roland SH-101's IR9022?