User manual KURZWEIL SP2XS MUSICIANS GUIDE

[. . . ] Single In-Line Memory Modules, commonly referred to by the acronym "SP2XS", are the small memory cards that the K2500 uses for Sample RAM. Early K2500 models take up to eight 30pin SP2XSs; K2500s with a rev. [. . . ] K or later mother board take up to two 72-pin SP2XSs. In either case, however, 128 Megabytes of Sample RAM is the maximum. To determine the SP2XS requirements of a K2500 without disassembling the unit, check its serial number; a "Z" as the seventh character (e. g. , 479501Z00001) indicates that the K2500 has a rev. K or later mother board and requires 72-pin SP2XSs. K2500s with a "0" as the seventh character of the serial number use 30-pin SP2XSs. CAUTION: Do not use composite SP2XSs in any K2500. K or later mother boards will only accept 72-pin non-composite SP2XSs, in sizes of 4 MB, 8 MB, 16 MB, 32 MB, 64 MB, and 128 MB. The SP2XSs can be in either 32-bit or 36-bit configurations, and must have an access time of 80 nanoseconds (ns) or faster. K or later mother boards have two SP2XS sockets, some SP2XSs cannot be paired with other SP2XSs, whether of the same or a different size. The table below shows the acceptable 72-pin SP2XS configurations, and indicates which sizes can be combined. Size 4 MB 8 MB 16MB 32MB 64MB 128MB Configuration 1Mx32 or 1Mx36 2Mx32 or 2Mx36 4Mx32 or 4Mx36 8Mx32 or 8Mx36 16Mx32 or 16Mx36 32Mx32 or 32Mx36 Pair with other SP2XSs?Yes No Yes No Yes No Configuration Chart for 72-pin SP2XSs. For example, a 4MB SP2XS can be combined with another 4 MB SP2XS to create 8 MB of sample memory. Similarly, a 4 MB SP2XS could be paired with a 16 MB or 64 MB SP2XS. [. . . ] Similarly, a 4 MB SP2XS could be paired with a 16 MB or 64 MB SP2XS. It could not, however, be paired with an 8 MB, 32 MB or 128 MB SP2XS. [. . . ]