RCF HD 12-A MK4 [5/8] Rear panel

ENGLISH

REAR

PANEL

JACK/FEMALE XLR INPUTS (BAL/UNBAL). The system accept jack or XLR

input connectors. These balanced inputs can be used to connect balanced or

unbalanced microphones or audio sources at line level. The balanced connector is

connected in parallel and can be used to send the audio signal to other ampliﬁed

speakers, recorders or supplementary ampliﬁers.

LIMITER LED. The ampliﬁer has a built in limiter circuit to prevent clipping

of the ampliﬁers or overdriving the transducers. When the soft clipping circuit is

active the LED blinks RED. It is okay if the limit LED blinks occasionally. If the LED

blinks frequently or lights continuously, turn down the signal level.

SIGNAL LED. The signal indicator lights green if there is signal present on the

main input.

POWER STATUS LED. This green led is ON when the speaker is connected to

the main power supply and the ON/OFF is in ON position.

MALE XLR SIGNAL OUTPUT. The output XLR connector provides a loop trough

for speakers daisy chaining.

VOLUME CONTROL. Adjust the ampliﬁer volume. This control does not affect

the “Link” - “Input - Link” output level.

FLAT/BOOST SWITCH. Set the ﬂat or boost equalization. “Boost” equalization

is a loudness recommended for background music applications, when the system

plays at a low level. For all other applications “Flat” equalisation is recommended.

INPUT SENSITIVITY SWITCH. Position the switch in LINE to use a line level

source (0 dB) or MIC to use a microphone source.

IEC AC SOCKET. The IEC AC socket connect the power cord to the socket.

(HD 32-A features Powercon input/output main connectors)

FUSE CARRIER. Mains fuse housing.

POWER MAIN SWITCH. The power switch turns the AC power ON and OFF.

The XLR connectors

use the following AES standard:

PIN 1 = GROUND (SHIELD)

PIN 2 = HOT (+)

PIN 3 = COLD (-)

CONNECTIONS

HOT GND

BAL. XLR

COLD