Low Impedance Speakers
If standard low impedance (4
Ω, 8Ω or 16Ω) speakers are being used, these should be connected to the 6.3mm
output sockets on the rear panel using quality speaker jack leads. Both of these outputs are fed from the same
amplifier section, which is mono. The minimum impedance of the total speaker load connected to either or both of
these sockets must be no lower than 4Ω.
The impedance is calculated using an inverse calculation as shown below.
_________1________
_________1________
_________1________
Impedance Speaker 1 + Impedance Speaker 2
= Overall Impedance
… therefore, for 2 speakers – each 8Ω impedance…
_1_
_1_
_1_
8
Ω
+
8
Ω
=
4
Ω
… so the overall impedance is 4Ω for both speakers connected in parallel.
The diagram below gives an example of this…
