Wednesday, December 13, 2017

Roland PB-300 Schematic



Here are some scans from the Roland PB-300 service manual. It was released in '83 as a
companion to their HP-400 digital piano. It stands as Roland's final, fully-analog drum machine.

First, a runthrough of the presets:





4 comments:

  1. The Boss DR-110 is an analogue voiced drum machine which was released in 1984. I believe the Dr-110 was the last analogue drum machine by Boss/Roland Corp.

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    Replies
    1. The DR-110's digital noise source keeps it from being fully analog.

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  2. Did you try adding trigger ins for the PB300?

    ReplyDelete
    Replies
    1. I didn't add voltage triggers, but I did replace the CPU and include MIDI triggers.
      Here's a picture: https://i.imgur.com/9X9oU5h.jpg

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