Inter-M DPA-1200S - Manual (Page 9)

DIGITAL POWER AMPLIFIER
7 DPA-300S/600S/900S/1200S, DPA-300SO/600SO/900SO/1200SO
Speaker Connection Speaker Connection
Before connecting speakers to the unit, be sure to disconnect the AC power cable. Make certain that the total
impedance is not less than the rated impedance indicated.
※ Caution: 1. Make sure that the total impedance does not equal or less than the rated impedance.
2. Do not connects a speaker has lower impedance than rated impedance, It may cause the
problem to unit.
3. Do not put the speaker cable close to input signal cable.
10W 10W 10W 10W
....
Speaker Output Speaker Impedance
100V / 33.3Ω
300W 70V / 16.3Ω
49V / 8Ω
100V / 16.6Ω
600W 70V / 8.2Ω
69.3V / 8Ω
100V / 11.1Ω
900W 70V / 5.4Ω
84.9V / 8Ω
100V / 8.3Ω
1200W 70V / 4.1Ω
98V / 8Ω