TOA Electronics DA-500FH CE Manuale Utente

5

• Keep the input cable away from the output cable. If installed close to each other, oscillation could occur. 
• To avoid unit failures, never connect outputs of 2 or more units in parallel. 
• Only connect speakers with an impedance equal to or greater than those specified. Connecting speakers

with a smaller than specified impedance could cause damage to the unit. 

• Periodically clean the filter located inside the ventilation panel on the unit's front panel. If the filter becomes

clogged, heat will become trapped inside the enclosure.

• Install the unit in locations where the temperature is between –10°C and +40°C and the moisture is less than

90%RH (no dew condensation must be formed).

• To clean, be sure to first switch off the unit's power, then wipe with a dry cloth.  When the unit gets very dirty,

use a cloth damped in a neutral cleanser. Never use benzene, thinner, alcohol, or chemically-treated
cleaning cloth because such volatile liquids could deform or discolor the unit.

• The supplied power supply cord is designed for exclusive use with this unit. Never use it with other

equipment.

• When mounting the unit in an equipment rack, the inside of the rack must be sufficiently ventilated. 

To achieve sufficient ventilation, remove all panels on the rear of the rack. 

• When mounting the unit in the rack, also mount a Perforated Panel larger than 1U in size*:

(1) at the top and the bottom of the rack, and
(2) above and below every 5 units. 

* 1U size = 44.5 mm (reference size)

Perforated panel

Power amplifiers
DA-550F/500FH

Power amplifiers
DA-550F/500FH

The supplied rack-mounting screws can be used for the TOA equipment
rack only. Do not use them for other racks.
When installing the unit in a rack other than that of TOA, be sure to use
the screws with a diameter of over 5 mm  and length of over 12 mm to
mount the unit.
Failure to do so may cause personal injury.