Ashly MX-406 Panduan Pengoperasian - Halaman 10

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Operating Manual -MX-406 Stereo Microphone/Line Mixer

stages first by setting their gain as high as possible but leaving about 20dB of headroom for loud peaks, then move on

to set the master gain to produce a good meter reading. Proceed to set the gain of equalizers, limiters, crossovers, and

amplifiers following the mixer in the same manner, always working toward the later stages of the system.

8.3 Excessive Noise

If the noise is in the form of hiss, the problem is usually due to an input stage set for insufficient gain and then

compensating for it by increasing the level. Try increasing gain and reducing level. Also, check that the -20dB rear

panel pad switch is not unnecessarily enabled.

8.4 Excessive hum

This is usually caused by "ground loops" in the system wiring. A complex sound system with many sources

separated by significant distance and using several power outlets has many opportunities for this problem to occur. If

possible, feed everything in the system from one power source with a common ground. Use balanced input and output

connections between widely separated components.

If you need help, get in touch with your Ashly dealer or call an Ashly technical service representative.

9. SPECIFICATIONS

DISTORTION

THD at +4dBu output, 20Hz-20KHz . . . . . . . . . . . . . . <0.05%

THD at +12dBu output, 30Hz-10KHz . . . . . . . . . . . . . <0.05%

IMD (SMPTE) at +12dBu output . . . . . . . . . . . . . . . . . <0.05%

HUM & NOISE (20Hz-20KHz at max preamp gain)

equivalent input hum and noise . . . . . . . . . . . . . . . . . . <-128dBu

residual output noise

all levels at minimum . . . . . . . . . . . . . . . . . . . . . . . . . . <-100dBu

master levels at nominal

all channel levels at minimum . . . . . . . . . . . . . . . . . . . . . <-90dBu

aux master at nominal

all channel aux at minimum . . . . . . . . . . . . . . . . . . . . . . <-90dBu

master levels and one

channel level at nominal . . . . . . . . . . . . . . . . . . . . . . . . . <-68dBu

MAXIMUM VOLTAGE GAIN (±2dB)

MASTER

Mic/Line Input to Master Outputs . . . . . . . . . . . . . . . . . . +84dB

Mic/Line Input to Mono Output, 600 ohm load . . . . . . . +84dB

AUX SENDS

Mic Input to Aux Master Output, pre ch. level . . . . . . . . . 84dB

Mic Input to Aux Master Output, post ch. level . . . . . . . . . 97dB

Stereo Line In to Master Output . . . . . . . . . . . . . . . . . . . . . 27dB

FREQUENCY RESPONSE

20Hz-20KHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +0.5/-1.0dB

EQUALIZATION

Bass

. . . . . . . . . . . . . . . . . . . . . . . ±12dB at 70Hz, shelving

Treble

. . . . . . . . . . . . . . . . . . . . . . . ±12dB at 8KHz, shelving

CROSSTALK

adjacent inputs, 20Hz-20KHz . . . . . . . . . . . . . . . . . . . . . <-65dB

VU METERS

Stereo outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -21 to +6 VU

0VU = +4dBu

PEAK INDICATORS

Peak Clip indicator on each input channel and left and right out-

puts, illuminates 3dB below clipping

PHANTOM POWER

+48 VDC applied to all Mic Inputs, switchable on rear panel.

Maximum total current draw = 80mA. Maximum single channel

current draw = 14mA. Gradual power-up and down to eliminate

"pops".

SHIPPING WEIGHT

13 lbs. (5.9kg)

POWER REQUIREMENTS

100-240 VAC, 50-60 Hz, 30 watt

DIMENSIONS

19" x 3.5" x 9.4" (483mm x 89mm x 239mm)

*unless otherwise stated, specification conditions are:

150 Ω source, maximum preamp gain, all other controls

set at nominal, XLR output into 600 Ω or greater.