This toy- like keyboard from 1984 was the little sister of the wonderful Bontempi MRS 52/D. Unlike the latter, the accompaniment can be only played through the chord sequencer, there is no arpeggio, no manual chord mode and it has only 25 keys. Also the analogue sound (especially drums) seems to be a bit thinner and less warm.
attention: When AC- adapter voltage is set too high, the rhythm voice falls silent and only sounds during played keyboard notes; this can be confusing.
The preset sound style resembles the MRS 52/D, although 2 sounds are different. The "clarinet" is made from plain squarewave with delayed vibrato and reminds to a recorder flute, while the "glock." (means glockenspiel?) is a cheesy squarewave musicbox sound made from the same timbre with decay envelope. The "sustain" button adds a quite long 3s sustain to the sounds.
There is no manual chord mode on this instrument; only during chord programming the entire keyboard (beside the rightmost 4 control keys) plays single finger organ chords. In opposite to this, the running chord sequencer can only play accompaniment (with rhythm) and can not be used to play "manual" organ chords without a rhythm. During rhythm the "accomp, mem cancel, game select" button toggles between accompaniment (so far it was previously programmed in the chord sequencer) and plain rhythm; each press of this button immediately restarts the running rhythm pattern, which can be used as a sound effect. The "play, rec, game" button cycles through normal mode, chord sequencer record mode and audio game mode (where the previous button selects the game number - the MRS 52/D employs the "function" and "mode" button in a similar manner to navigate through its more versatile menu).
Generally the small Bontempi HT 313.10 is a nice sounding
analogue keyboard, although more restricted and not as great as the Bontempi
|removal of these screws voids warranty...|