Ashly MX-206 운영 매뉴얼 - 페이지 5

{카테고리_이름} Ashly MX-206에 대한 운영 매뉴얼을 온라인으로 검색하거나 PDF를 다운로드하세요. Ashly MX-206 9 페이지. Stereo microphone mixer
Ashly MX-206에 대해서도 마찬가지입니다: 운영 매뉴얼 (12 페이지), 기술 노트 및 사양 (2 페이지), 운영 매뉴얼 (8 페이지), 운영 매뉴얼 (12 페이지)

페이지 인쇄

Two-conductor (twisted pair) shielded cable is

best for all XLR type connections. Belden No. 8412, or its

equivalent, is an excellent cable due to its heavy construction.

This type of cable should be used for all portable applica-

tions. Snake cables containing multiple shielded pairs must

be handled very carefully because the leads tend to be fragile,

and a broken conductor is difficult to repair.

If low level and high level lines (e.g., microphones

and mixer line outputs), or if either of these lines and speaker

cables are run parallel for long distances, crosstalk may be sig-

nificant. In fact, the crosstalk (signal leakage between cables)

can cause an electronic feedback loop, oscillation, and possibly

damage to the equipment. To minimize crosstalk, physically

separate low level (microphone) cables from speaker cables by

the greatest feasible distance. At any point where cables meet,

run low level cables perpendicular to high level or speaker

cables. If low and high level or speaker cables must be run

parallel and in close proximity to one another, they should be

bundled separately.

5.1 Microphone Input

The microphone input is an active balanced type with

a nominal impedance of 1200 ohms. Its noise performance

is best with a 200 ohm microphone. The Mic input connec-

tor is a standard 3-pin XLR female with the shield on pin 1,

the (+) in-phase connection on pin 2, and the (-) out-of-phase

connection on pin 3.

5.2 Input Pad

The Pad is a 20dB attenuation switch on the rear panel

for use with each XLR microphone input. It should normally

be left in the "out" position for best signal to noise ratio and

should only be used when the input is being overdriven with

the Input dB (gain) switch at its minimum setting.

Operating Manual - MX-206 Stereo Microphone Mixer

5.3 Stereo Line In - Stereo Line Out

The stereo line inputs on RCA and 3.5mm connec-

tors have a nominal operating level of -10dBu to match most

consumer level audio products. The stereo line outputs are

-10dBu "pre-master", so they are not affected by the settings

of the output controls.

5.4 Mono Transformer Balanced Output

The mono transformer output uses a male XLR type

connector and provides total isolation for 600 ohm lines. Pin 1

is ground, pin 2 is (+), and pin 3 is (-). This output is controlled

by the Mono level, with a nominal operating level of +4dBu.

Note: The transformer-balanced output is designed

to drive up to +24dBu into a 600 ohm load. Because of the

nature of an output transformer, the output level increases as

the impedance of the terminating load becomes higher than

600 ohms. Whereas a "direct-coupled" output stage like that

of the stereo outputs will not change as the load changes, any

transformer used in an audio path is affected by its termina-

tion impedance. Since line level inputs on audio devices are

typically 10KΩ or higher, expect a slight increase (2.5dB)

in output level when driving high impedance inputs with the

mono transformer output. The output meters will reflect the

levels present on the stereo outputs, regardless of the load on

the transformer output.

5.5 Stereo Outputs

The Stereo Outputs are controlled by the left and

right master. They are 1/4" pseudo-balanced TRS jacks with

a nominal operating level of +4dBu into any load.