Kurzweil K2000 - MUSICIANS GUIDE - Choosing Simms for Sample RAM; Using Headphones with the K2 Vx

Memory Upgrades and Other Options
Choosing SIMMs for Sample RAM
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the one you speciÞed in the Bank dialog before you loaded the Þle. A quick way to see where
the objects you loaded ended up is to use the ÒObjectsÓ Utility function in Master mode.
Select Master mode and press the Utility soft button. Press the Objects soft button, and a list of
RAM objects will appear. Use the Alpha Wheel to scroll through the list of objects. YouÕll see the
type, ID, name, and size (in bytes) of each object.
Choosing SIMMs for Sample RAM
Single In-Line Memory Modules, commonly referred to by the acronym "SIMM", are the small
memory cards that the K2vx uses for Sample RAM. You can add up to eight SIMMs to your
K2vx, and since they range in available size up to 16 Megabytes, that means you can add up to
128 Megabytes of Sample RAM to your machine.
The K2vx will accept 30-pin non-composite SIMMs, in sizes of 256K Bytes (obsolete), 1
Megabyte, 4 Megabytes, and 16 Megabytes, in either 8-bit or 9-bit conÞgurations. The SIMMs
must have an access time of 80 nanoseconds (ns) or faster. The maximum height and width of a
SIMM for the K2vx is 30mm x 90mm (approximately 1.2 inches x 3.5 inches). Below is a list of
some SIMMs that will work with your K2vx:
Hitachi HB56A48A; 4Mx8
Hitachi HB56A49A; 4Mx9
TI TM124EU9B, TM124EU9C; 1Mx9
TI TM497EAD9B, TM4100EAD9; 4Mx9
TI TM4100GAD8, TM497GAD8A; 4Mx8
TI TM16100GBD8;16Mx8
TI TM16100EBD9;16Mx9
NEC MC-421000A8B; 1Mx8
NEC MC-424100A8B; 4Mx8
NEC MC-421000A9B; 1Mx9
NEC MC-424100A9B; 4Mx9
Tosh THM81000AS, Tosh THM81000BS, Tosh THM81070AS; 1Mx8
Tosh THM91000AS, Tosh THM91000BS, Tosh THM91070AS; 1Mx9
SIMMs are always installed in pairs, and must be installed by an authorized Kurzweil facility.
CAUTION:
You must not use composite SIMMs in your K2vx. A composite SIMM is one that uses a
PAL or other additional circuitry to make multiple DRAM chips act like bigger chips. Non-composite
SIMMs (the kind you may use in your K2vx) have no chips other than DRAM memory chips soldered to
the board. SIMMs with PALs, buffers, or other logic components will not work in your K2vx, and must
not be used.
Using Headphones with the K2vx
A good pair of headphones can be indispensable when you want to play but need to keep the
volume down. YouÕll get optimum performance from headphones with at least 50 ohms
impedance, but anything over 8 ohms is adequate. Headphone volume decreases as the
impedance decreases.