Specifications
7
Operating Manual - TM-335 Public Address Mixer/Amplier
Speaker Wiring
● Before connecting speakers to the TM-335 unit, be sure to disconnect the AC power cable.
● Make certain that the load impedance is not less than the rated impedance indicated.
●
Low Z (4Ω or 8Ω), 25V, and 70V speaker loads should not be wired in combination with each other.
● Use class 2 wiring.
For the 4Ω low impedance terminal, connect as shown below, with the negative (-) speaker wire
connected to the COM terminal and the positive (+) speaker wire connected to the 4Ω terminal. Note
from the illustration how two 8Ω speakers can be wired in parallel to make a 4Ω load.
For the 8Ω low impedance terminal, connect as shown below, with the negative (-) speaker wire
connected to the COM terminal and the positive (+) speaker wire connected to the 8Ω terminal. Note
from the illustration how two 4Ω speakers can be wired in series, or two 16Ω speakers can be wired
in parallel to make an 8Ω load.
For 25V and 70V terminals, connect with matching transformers as shown below. Note: 230V
export models have 70V and 100V taps instead of 25V and 70V.