Crown Micro-Tech 1201 Informations techniques télécharger pdf (Page 14)

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Micro-Tech 600/1200/2400 Power Amplifiers

Reference Manual

3.3.4 Input Connection

The balanced phone jack inputs have a nominal imped-

ance of 20 K ohms (10 K ohms with unbalanced wiring)

and will accept the line-level output of most devices.

Three-pin female XLR connectors are also available on

the optional

MT-XLR

accessory and balanced barrier

block connectors are available on the optional

MT-BB

accessory (see Section 8.2). Correct input wiring will

depend on two factors: (1) whether the input signals are

balanced or unbalanced, and (2) whether the signal

source floats or has a ground reference. Figures 3.7 and

3.8 provide examples of recommended connection

techniques for each type of signal source. The optional

MT-XLR

connector is shown.

Fig. 3.7 Unbalanced Input Wiring

for the Optional MT-XLR

Fig. 3.8 Balanced Input Wiring

for the Optional MT-XLR

The amplifier’s built-in ¼-inch input phone connectors

can be wired similarly for balanced or unbalanced, float-

ing or ground-referenced sources. The phone connec-

tors have a standard tip-ring-sleeve (TRS) configuration:

the tip is positive (+), ring is negative (–) and sleeve is

ground (see Figure 3.9). Wiring for different sources fol-

lows the XLR wiring guidelines shown in Figures 3.7 and

3.8.

When either of the input connector accessories is in-

stalled, the unused input connectors can be used as

“daisy chain” outputs to feed the input signal from one

amplifier to another.

Please follow the input wiring instructions in Section

3.3.2 and 3.3.3 if the amplifier will be used in either

Bridge-Mono or Parallel-Mono mode. Remember, do not

use the channel 2 input in either mono mode.

Fig. 3.9 Balanced and Unbalanced

Phone Plug Wiring

1 2 ... 9 10 11 12 13 14 15 16 17 18 19 ... 37 38

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