Meyer Sound MM-4 Controller
A two-channel, single rack unit, the MM-4CEU control electronics unit (Figure i.2) provides the required frequency and phase response correction circuitry tailored to the MM-4 loudspeaker. Through a SpeakerSense™ connection to the power amplifier output, the MM-4CEU continuously monitors the power applied to the drivers, activating integral peak and RMS limiters to protect against over-excursion and overheating.
When several amplifiers are used in a system, the MM-4CEU’s SpeakerSense connection works by utilizing Meyer Sound’s MultiSense™ technology, allowing each channel to:
- Drive multiple amplifiers
- Monitor two amplifier channels at once
- Activate protection circuits based on the amplifier
channel with the highest signal level MultiSense allows the levels of individual zones to be adjusted using the power amplifier’s attenuators while still giving protection to all the
oudspeakers on the same MM-4CEU channel. Typically, each channel of the MM-4CEU can drive 12 or more amplifier channels depending on the input impedance of the amplifier