Original SPECTRA S-CLASS SM-128 AA...
The Spectra SE-128 AA is a high performance, robust and reliable jetting assembly designed for a broad range of wide format printers at resolutions up to 900 dpi. Two electrically independent piezoelectric slices, each with 64 addressable channels, are combined to provide a total of 128 nozzles. It has been calibrated for a droplet size of 30 pico litre and has a maximum firing frequency of 40 kHz.