Toa A-1724 - Manual (Page 9)

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9. RACK MOUNTING
To mount the unit in a standard 19" equipment rack, use the optional MB-25B Rack Mounting Bracket.
Attach the MB-25B to the unit using the supplied 4 screws. When using other screws, each screw must be
shorter than 16 mm.
MB-25B
M4 x 16 Machine screw included in MB-25B
Amplifiers
PF-013B (optional)
Note
Use the optional PF-013B Perforated Panels to provide
sufficient ventilation when mounting 2 or more units in an
equipment rack.
10. CONTROL SETTINGS
Output levels are adjustable with individual volume controls. For music play or announcements, adjust the
corresponding volume control so that the red indicator doesn't light. Note that the sound quality is downgraded
when the red indicator remains lit.
To prevent the accidental change of the settings of input volume and tone (Bass and Treble) controls, remove
their knobs after setting them to the desired position and attach the optional YA-920 Volume Control Covers
instead.
MIC 1
BASS
MIC 2
YA-920 (optional)
Control knob