Steren SEL-400, User Manual

Page: 16 / 18

If your amplifier can use 4 ohm loads
4 ohms 6 ohms 8 ohms 16 ohms
Selection 1 Protection OFF Protection OFF Protection OFF Protection OFF
Selection 2 Protection ON Protection ON Protection OFF Protection OFF
Selection 3 Protection ON Protection ON Protection ON Protection OFF
Selection 4 Protection ON Protection ON Protection ON Protection OFF
If your amplifier can use 2 ohm loads
4 ohms 6 ohms 8 ohms 16 ohms
Selection 1 Protection OFF Protection OFF Protection OFF Protection OFF
Selection 2 Protection OFF Protection OFF Protection OFF Protection OFF
Selection 3 Protection ON Protection OFF Protection OFF Protection OFF
Selection 4 Protection ON Protection ON Protection OFF Protection OFF
Calculating Impedance
If you want to calculate the impedance of speakers with different
impedance here is how to do it.
Parallel Impedance is equal to (R1 x R2) / (R1 + R2).
Say you had a 6 ohm and an 8 ohm speaker. The parallel impedance
if you select these two speakers would be: (6 x 8) / (6+ 8) =48 / 14 =
3.4 ohms.
If the calculated impedance is less than the minimal amplifier allowed
impedance, turn the PROTECTION mode on.
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