6
-LINE Inputs. Given the important level differences between usual LINE and CD sources
(e.g. Tape decks), the MAC40v provides specialized inputs for each source. The sensitivity of the
HIGH LINE input (27) is 0dBV (1V), while the LOW LINE (26) sensitivity is -10dBV(316mV).
Compact disc, DAT, MP3, DVD Audio... should be connected to the HIGH LINE input.
Tape recorders, cassettes, tuners, videos... should be connected to the LOW LINE input.
- Headphones: In order to achieve the best performance, they should be high impedance
type (200-600
Ω
). They must be connected to the HEADPHONES OUT (22) connector, a standard
¼" stereo jack. Connect ground to sleeve, ring to right and tip to left.
- Other mixers: The MIX (32) input provides a direct access to the main mix bus, so this is
a perfect input for another mixer to be plugged in without using up a regular input.
- Power amplifiers: See paragraph 4.5.
4. OPERATION AND USAGE
4.1. Start up
Power up the mixer by pushing the POWER (11) switch. The green pilot-light, integrated
into the switch itself, will immediately light up. Although the noise generated by powering up the
MAC40v is reduced to a bare minimum and is nearly null with the MASTER (12 and 21) faders down,
it is always advisable not to forget about this power-up sequence: sound sources, mixer, equalizers,
active filters and power amplifiers. Power down the equipment by following the inverse sequence.
This way the peaks or transients produced by powering up / down a device do not affect the
following one in the audio chain and, as a result, they do not reach the loudspeakers, which are the
most vulnerable audio elements in this case.
4.2. Monitoring
The MAC40v is equipped with an acoustical and visual monitoring system, through
headphones, CUE output and VU METER. When switching on any of the PFL (7) or AFL (14-17)
buttons, signal(s) present at the input(s) and output(s) will be seen at the VU METER. If no switch is
at the ON position, the signal present at the main mix bus is heard (open faders).
It is also possible to monitor through the CUE (33) output. This output carries the very
same signal as the headphones output does. Its nominal output level is 0dBV (1V) and it is controlled
by the rotary knob MONITOR VOL (15).
