Wiring For 4 Ohm Or 8 Ohm Speakers (Ma Models) - Extron electronics MLS 304MA User Manual

The MA models' amplifier power-up delays are approximately
• 10 seconds for 70 V or 100 V output, 8 seconds to hear the relay click
• 8 seconds for 4 ohm or 8 ohm output

Wiring for 4 ohm or 8 ohm speakers (MA models)

1. Flip the toggle switch down (Direct) to select 4 ohm or 8 ohm connection.
2. Use the appropriate wiring for the load as shown in the following
illustrations.
Mono +
AMPLIFIED OUTPUT 20 WATTS MONO
XFMR
4/8 ohm
COM 70V 100V
DIRECT
Mono –
Mono +
AMPLIFIED OUTPUT 20 WATTS MONO
XFMR
4/8 ohm
COM 70V 100V
DIRECT
Mono –
Two 8 ohm speakers wired in
parallel equal a 4 ohm load.
Mono +
AMPLIFIED OUTPUT 20 WATTS MONO
XFMR
4/8 ohm
COM 70V 100V
DIRECT
Mono –
Two 4 ohm speakers wired in
8 Ohm Total Load
series equal an 8 ohm load.
The maximum power output when an MLS 304MA or MLS 406MA is wired
for 4 ohm or 8 ohm speakers is 20 watts per channel.
4 Ohm Load or
8 Ohm Load
8 8
ohms ohms
4 Ohm Total Load
4 ohms
4 ohms
MLS 304 Series, MLS 406 Series • Installation
Mono +
4
ohms
4/8 ohm
4
ohms
Mono –
4 Ohm Total Load
Mono +
8
ohms
4/8 ohm
8
ohms
Mono –
8 Ohm Total Load
4
ohms
4
ohms
8
ohms
8
ohms
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