Operation Manual

REL Acoustics ‘ST III’ User Manual

CONTROLS AND CONNECTIONS (Cont)

MODE SWITCH. Used to set phase* and to bypass crossover for Low Level input**.

Position 1 / Line: 0 degrees phase, crossover engaged low level input

Position 2 / LFE: 0 degrees phase, crossover bypassed for low level input

Position 3 / Line: 180 degrees phase, crossover engaged for low level input

Position 4 / LFE: 180 degrees phase, crossover bypassed for low level input

*Phase selection affects both Hi and Lo level inputs

**Crossover is always engaged for Hi level input regardless of mode switch

position.

LO LEVEL input volume control. Adjust for output level when using LO LEVEL phono

input

or balanced line level input XLR socket.

HI LEVEL input volume control. Adjust for output level when using HI INPUT Neutrik

socket or BAL HI INPUT Neutrik socket.

FINE ROLL OFF control. Fine adjustment of roll off point, used in conjunction with

Coarse Roll Off control (below). See chart on amplifier panel or in this manual, page 8,

for crossover frequencies determined by setting combinations of both controls.

COARSE ROLL OFF control. Coarse adjustment of roll off point, used in conjunction

with Fine Roll Off control (above). See chart on amplifier or in this manual, page 8, for

crossover frequencies determined by setting combinations of both controls.

0dB LO INPUT phono socket. Used to connect the Sub Bass System at low level to

the sub/LFE output of the amplifier/processor or left and right pre-amp outputs.

If Lo Level inputs are used to connect pre-amp right and left outputs then a 12dB

attenuator is available from REL to balance the two inputs.

Alternatively, a high quality Y-adaptor may be employed to connect at either input as

system gain characteristics demand.

+12dB LO INPUT phono socket . As 6 but a higher sensitivety. If LO LEVEL inputs

are used connected to pre-amp right and left outputs then a 12 dB attenuator is

available from REL to balance the two inputs.

Alternatively, a high quality Y-adaptor may be employed to connect at either input as

system gain characteristics demand.

BAL HI INPUT Neutrik Speakon socket. Used to connect the Sub Bass System at high

level to the speaker output of one channel of a differential output or bridged to mono

amplifier.

Note:- 230 volt models of Stentor III and Studio III have two BAL HI INPUTS.

UNBAL HI INPUT Neutrik Speakon socket. Used to connect the Sub Bass System at

high level to the main speaker output of amplifiers.

BAL LO INPUT XLR socket. Used to connect the Sub Bass System at low level to pre-

amplifier balanced line outputs. (Not on Strata III)

Note:- 230 volt models of Stentor III and Studio III have two balanced line inputs.