This is the instruction manual for the BOSS DB-66, a battery- or AC-powered metronome with an LCD display, two tempo LEDs, rhythm volume sliders and a built-in speaker. The manual describes each part of the top panel: the Total Volume Control, Beat Level Control, Rhythm Volume Controls, Headphones Jack, AC Adaptor Jack, Mode Switch, Tempo LED, LCD Display, the Start/Stop (Tap) Button, the Up and Down Buttons and the Beat Selector Button. It explains the Metronome and Tap modes, how to select beats 0 to 6, and how to output the standard pitch of 440Hz.
Later sections give setting examples for straight and syncopated rhythms and combined J and rhythm patterns, plus important notes on power supply, location, cleaning, the LCD and battery replacement. AC adaptor operation, the battery replacement procedure and a full specification list (tempo range, tempo accuracy, beat, standard pitch, dimensions, weight and accessories) are also included.
| Power | 9V battery or BOSS PSA-120 / PSA-220 / PSA-240 AC adaptor |
|---|---|
| Tempo Range | M.M. 35 to 250 |
| Tempo Accuracy | ±0.15% |
| Beat | 0, 1, 2, 3, 4, 5 and 6 |
| Standard Pitch | 440Hz (A4) ±0.2 cent |
| Display | LCD |
| Dimensions | 170(W) x 96(D) x 33(H) mm |
| Weight | 320g / 11oz |
| Accessories | Soft case and owner's manual |
It can run from either AC or a battery: a 9V battery or a BOSS PSA-120, PSA-220 or PSA-240 AC adaptor depending on the voltage system in your country.
The tempo range is M.M. 35 to 250, with a tempo accuracy of ±0.15%.
Press the Down Button and the Beat Selector Button at the same time; this outputs the standard pitch of 440Hz.
Press the Up Button and, without releasing it, press the Down Button to move the number quickly; the reverse also works.